From 47788b97a9eb1215d0ac01826f51fbe286f56c0b Mon Sep 17 00:00:00 2001
From: Jay Foad <jay.foad@amd.com>
Date: Thu, 11 Jun 2020 17:42:30 +0100
Subject: [PATCH] SILoadStoreOptimizer: add support for GFX10 image
 instructions

GFX10 image instructions use one or more address operands starting at
vaddr0, instead of a single vaddr operand, to allow for NSA forms.

Differential Revision: https://reviews.llvm.org/D81675
---
 llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp    |  176 +--
 .../test/CodeGen/AMDGPU/merge-image-load-gfx10.mir |  490 ++++++++
 .../CodeGen/AMDGPU/merge-image-sample-gfx10.mir    | 1173 ++++++++++++++++++++
 3 files changed, 1752 insertions(+), 87 deletions(-)
 create mode 100644 llvm/test/CodeGen/AMDGPU/merge-image-load-gfx10.mir
 create mode 100644 llvm/test/CodeGen/AMDGPU/merge-image-sample-gfx10.mir

diff --git a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
index 140e550..2eb1c52 100644
--- a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
+++ b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
@@ -103,15 +103,19 @@ enum InstClassEnum {
   TBUFFER_STORE,
 };
 
-enum RegisterEnum {
-  SBASE = 0x1,
-  SRSRC = 0x2,
-  SOFFSET = 0x4,
-  VADDR = 0x8,
-  ADDR = 0x10,
-  SSAMP = 0x20,
+struct AddressRegs {
+  unsigned char NumVAddrs = 0;
+  bool SBase = false;
+  bool SRsrc = false;
+  bool SOffset = false;
+  bool VAddr = false;
+  bool Addr = false;
+  bool SSamp = false;
 };
 
+// GFX10 image_sample instructions can have 12 vaddrs + srsrc + ssamp.
+const unsigned MaxAddressRegs = 12 + 1 + 1;
+
 class SILoadStoreOptimizer : public MachineFunctionPass {
   struct CombineInfo {
     MachineBasicBlock::iterator I;
@@ -126,8 +130,8 @@ class SILoadStoreOptimizer : public MachineFunctionPass {
     bool SLC;
     bool DLC;
     bool UseST64;
-    int AddrIdx[5];
-    const MachineOperand *AddrReg[5];
+    int AddrIdx[MaxAddressRegs];
+    const MachineOperand *AddrReg[MaxAddressRegs];
     unsigned NumAddresses;
     unsigned Order;
 
@@ -349,7 +353,8 @@ static InstClassEnum getInstClass(unsigned Opc, const SIInstrInfo &TII) {
     }
     if (TII.isMIMG(Opc)) {
       // Ignore instructions encoded without vaddr.
-      if (AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr) == -1)
+      if (AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr) == -1 &&
+          AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr0) == -1)
         return UNKNOWN;
       // TODO: Support IMAGE_GET_RESINFO and IMAGE_GET_LOD.
       if (TII.get(Opc).mayStore() || !TII.get(Opc).mayLoad() ||
@@ -422,58 +427,54 @@ static unsigned getInstSubclass(unsigned Opc, const SIInstrInfo &TII) {
   }
 }
 
-static unsigned getRegs(unsigned Opc, const SIInstrInfo &TII) {
-  if (TII.isMUBUF(Opc)) {
-    unsigned result = 0;
+static AddressRegs getRegs(unsigned Opc, const SIInstrInfo &TII) {
+  AddressRegs Result;
 
-    if (AMDGPU::getMUBUFHasVAddr(Opc)) {
-      result |= VADDR;
-    }
-
-    if (AMDGPU::getMUBUFHasSrsrc(Opc)) {
-      result |= SRSRC;
-    }
-
-    if (AMDGPU::getMUBUFHasSoffset(Opc)) {
-      result |= SOFFSET;
-    }
-
-    return result;
+  if (TII.isMUBUF(Opc)) {
+    if (AMDGPU::getMUBUFHasVAddr(Opc))
+      Result.VAddr = true;
+    if (AMDGPU::getMUBUFHasSrsrc(Opc))
+      Result.SRsrc = true;
+    if (AMDGPU::getMUBUFHasSoffset(Opc))
+      Result.SOffset = true;
+
+    return Result;
   }
 
   if (TII.isMIMG(Opc)) {
-    unsigned result = VADDR | SRSRC;
+    int VAddr0Idx = AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr0);
+    if (VAddr0Idx >= 0) {
+      int SRsrcIdx = AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::srsrc);
+      Result.NumVAddrs = SRsrcIdx - VAddr0Idx;
+    } else {
+      Result.VAddr = true;
+    }
+    Result.SRsrc = true;
     const AMDGPU::MIMGInfo *Info = AMDGPU::getMIMGInfo(Opc);
     if (Info && AMDGPU::getMIMGBaseOpcodeInfo(Info->BaseOpcode)->Sampler)
-      result |= SSAMP;
+      Result.SSamp = true;
 
-    return result;
+    return Result;
   }
   if (TII.isMTBUF(Opc)) {
-    unsigned result = 0;
-
-    if (AMDGPU::getMTBUFHasVAddr(Opc)) {
-      result |= VADDR;
-    }
-
-    if (AMDGPU::getMTBUFHasSrsrc(Opc)) {
-      result |= SRSRC;
-    }
-
-    if (AMDGPU::getMTBUFHasSoffset(Opc)) {
-      result |= SOFFSET;
-    }
-
-    return result;
+    if (AMDGPU::getMTBUFHasVAddr(Opc))
+      Result.VAddr = true;
+    if (AMDGPU::getMTBUFHasSrsrc(Opc))
+      Result.SRsrc = true;
+    if (AMDGPU::getMTBUFHasSoffset(Opc))
+      Result.SOffset = true;
+
+    return Result;
   }
 
   switch (Opc) {
   default:
-    return 0;
+    return Result;
   case AMDGPU::S_BUFFER_LOAD_DWORD_IMM:
   case AMDGPU::S_BUFFER_LOAD_DWORDX2_IMM:
   case AMDGPU::S_BUFFER_LOAD_DWORDX4_IMM:
-    return SBASE;
+    Result.SBase = true;
+    return Result;
   case AMDGPU::DS_READ_B32:
   case AMDGPU::DS_READ_B64:
   case AMDGPU::DS_READ_B32_gfx9:
@@ -482,7 +483,8 @@ static unsigned getRegs(unsigned Opc, const SIInstrInfo &TII) {
   case AMDGPU::DS_WRITE_B64:
   case AMDGPU::DS_WRITE_B32_gfx9:
   case AMDGPU::DS_WRITE_B64_gfx9:
-    return ADDR;
+    Result.Addr = true;
+    return Result;
   }
 }
 
@@ -539,38 +541,34 @@ void SILoadStoreOptimizer::CombineInfo::setMI(MachineBasicBlock::iterator MI,
     DLC = TII.getNamedOperand(*I, AMDGPU::OpName::dlc)->getImm();
   }
 
-  unsigned AddrOpName[5] = {0};
-  NumAddresses = 0;
-  const unsigned Regs = getRegs(I->getOpcode(), TII);
-
-  if (Regs & ADDR) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::addr;
-  }
-
-  if (Regs & SBASE) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::sbase;
-  }
-
-  if (Regs & SRSRC) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::srsrc;
-  }
-
-  if (Regs & SOFFSET) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::soffset;
-  }
+  AddressRegs Regs = getRegs(Opc, TII);
 
-  if (Regs & VADDR) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::vaddr;
-  }
-
-  if (Regs & SSAMP) {
-    AddrOpName[NumAddresses++] = AMDGPU::OpName::ssamp;
-  }
-
-  for (unsigned i = 0; i < NumAddresses; i++) {
-    AddrIdx[i] = AMDGPU::getNamedOperandIdx(I->getOpcode(), AddrOpName[i]);
-    AddrReg[i] = &I->getOperand(AddrIdx[i]);
-  }
+  NumAddresses = 0;
+  for (unsigned J = 0; J < Regs.NumVAddrs; J++)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr0) + J;
+  if (Regs.Addr)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::addr);
+  if (Regs.SBase)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::sbase);
+  if (Regs.SRsrc)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::srsrc);
+  if (Regs.SOffset)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::soffset);
+  if (Regs.VAddr)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vaddr);
+  if (Regs.SSamp)
+    AddrIdx[NumAddresses++] =
+        AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::ssamp);
+  assert(NumAddresses <= MaxAddressRegs);
+
+  for (unsigned J = 0; J < NumAddresses; J++)
+    AddrReg[J] = &I->getOperand(AddrIdx[J]);
 }
 
 } // end anonymous namespace.
@@ -694,7 +692,7 @@ bool SILoadStoreOptimizer::dmasksCanBeCombined(const CombineInfo &CI,
   unsigned OperandsToMatch[] = {AMDGPU::OpName::glc, AMDGPU::OpName::slc,
                                 AMDGPU::OpName::d16, AMDGPU::OpName::unorm,
                                 AMDGPU::OpName::da,  AMDGPU::OpName::r128,
-                                AMDGPU::OpName::a16};
+                                AMDGPU::OpName::a16, AMDGPU::OpName::dlc};
 
   for (auto op : OperandsToMatch) {
     int Idx = AMDGPU::getNamedOperandIdx(CI.I->getOpcode(), op);
@@ -1288,9 +1286,9 @@ MachineBasicBlock::iterator SILoadStoreOptimizer::mergeBufferLoadPair(
 
   auto MIB = BuildMI(*MBB, Paired.I, DL, TII->get(Opcode), DestReg);
 
-  const unsigned Regs = getRegs(Opcode, *TII);
+  AddressRegs Regs = getRegs(Opcode, *TII);
 
-  if (Regs & VADDR)
+  if (Regs.VAddr)
     MIB.add(*TII->getNamedOperand(*CI.I, AMDGPU::OpName::vaddr));
 
   // It shouldn't be possible to get this far if the two instructions
@@ -1351,9 +1349,9 @@ MachineBasicBlock::iterator SILoadStoreOptimizer::mergeTBufferLoadPair(
 
   auto MIB = BuildMI(*MBB, Paired.I, DL, TII->get(Opcode), DestReg);
 
-  const unsigned Regs = getRegs(Opcode, *TII);
+  AddressRegs Regs = getRegs(Opcode, *TII);
 
-  if (Regs & VADDR)
+  if (Regs.VAddr)
     MIB.add(*TII->getNamedOperand(*CI.I, AMDGPU::OpName::vaddr));
 
   unsigned JoinedFormat =
@@ -1431,9 +1429,9 @@ MachineBasicBlock::iterator SILoadStoreOptimizer::mergeTBufferStorePair(
   auto MIB = BuildMI(*MBB, Paired.I, DL, TII->get(Opcode))
                  .addReg(SrcReg, RegState::Kill);
 
-  const unsigned Regs = getRegs(Opcode, *TII);
+  AddressRegs Regs = getRegs(Opcode, *TII);
 
-  if (Regs & VADDR)
+  if (Regs.VAddr)
     MIB.add(*TII->getNamedOperand(*CI.I, AMDGPU::OpName::vaddr));
 
   unsigned JoinedFormat =
@@ -1594,9 +1592,9 @@ MachineBasicBlock::iterator SILoadStoreOptimizer::mergeBufferStorePair(
   auto MIB = BuildMI(*MBB, Paired.I, DL, TII->get(Opcode))
                  .addReg(SrcReg, RegState::Kill);
 
-  const unsigned Regs = getRegs(Opcode, *TII);
+  AddressRegs Regs = getRegs(Opcode, *TII);
 
-  if (Regs & VADDR)
+  if (Regs.VAddr)
     MIB.add(*TII->getNamedOperand(*CI.I, AMDGPU::OpName::vaddr));
 
 
@@ -1991,6 +1989,8 @@ SILoadStoreOptimizer::collectMergeableInsts(
     if (!CI.hasMergeableAddress(*MRI))
       continue;
 
+    LLVM_DEBUG(dbgs() << "Mergeable: " << MI);
+
     addInstToMergeableList(CI, MergeableInsts);
   }
 
@@ -2087,6 +2087,8 @@ SILoadStoreOptimizer::optimizeInstsWithSameBaseAddr(
 
     Modified = true;
 
+    LLVM_DEBUG(dbgs() << "Merging: " << *CI.I << "   with: " << *Paired.I);
+
     switch (CI.InstClass) {
     default:
       llvm_unreachable("unknown InstClass");
diff --git a/llvm/test/CodeGen/AMDGPU/merge-image-load-gfx10.mir b/llvm/test/CodeGen/AMDGPU/merge-image-load-gfx10.mir
new file mode 100644
index 0000000..c7d297d
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/merge-image-load-gfx10.mir
@@ -0,0 +1,490 @@
+# RUN: llc -march=amdgcn -mcpu=gfx1010 -verify-machineinstrs -run-pass si-load-store-opt -o - %s | FileCheck -check-prefix=GFX10 %s
+
+# GFX10-LABEL: name: image_load_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+# GFX10-LABEL: name: image_load_merged_v1v3_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub3
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub0_sub1_sub2
+
+name: image_load_merged_v1v3_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_merged_v2v2
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY %8.sub0_sub1
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY killed %8.sub2_sub3
+
+name: image_load_merged_v2v2
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5:vreg_64, %3:sgpr_256, 3, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+    %7:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5:vreg_64, %3:sgpr_256, 12, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_merged_v2v2_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY %8.sub2_sub3
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY killed %8.sub0_sub1
+
+name: image_load_merged_v2v2_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5:vreg_64, %3:sgpr_256, 12, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+    %7:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5:vreg_64, %3:sgpr_256, 3, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_merged_v3v1
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY %8.sub0_sub1_sub2
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY killed %8.sub3
+
+name: image_load_merged_v3v1
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %7:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_merged_v3v1_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY %8.sub1_sub2_sub3
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY killed %8.sub0
+
+name: image_load_merged_v3v1_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %7:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_divided_merged
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+
+name: image_load_divided_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %8:vreg_128 = BUFFER_LOAD_DWORDX4_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %9:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %7:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %10:vreg_128 = BUFFER_LOAD_DWORDX4_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %11:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_divided_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_divided_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vreg_128 = COPY %2
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    IMAGE_STORE_V4_V2 %4:vreg_128, %5:vreg_64, %3:sgpr_256, 15, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_dmask_overlapped_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_dmask_overlapped_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_dmask_not_disjoint_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 11, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_dmask_not_disjoint_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 11, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_0
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %6, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_0
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %7:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %8:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %6, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_1
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %6, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %6, %4, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_1
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %5:vgpr_32 = COPY %2.sub3
+    %6:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %7:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %6, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %8:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %6, %4, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_3
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_4
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_4
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_5
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_5
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_6
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_6
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_7
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 1, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_7
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 1, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_8
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V1_gfx10 %6, %3, 8, 1, -1, 0, 0, 0, 0, 1, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_8
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = COPY %5.sub0
+    %7:vgpr_32 = IMAGE_LOAD_V1_V1_gfx10 %6, %3, 8, 1, -1, 0, 0, 0, 0, 1, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+    %8:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_9
+# GFX10: %{{[0-9]+}}:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_9
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_10
+# GFX10: %{{[0-9]+}}:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 1, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_10
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_LOAD_V2_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 1, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_not_merged_11
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 1, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_load_not_merged_11
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_V1_V2_gfx10 %5, %3, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 1, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_V3_V2_gfx10 %5, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_mip_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_MIP_V4_V3_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_mip_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_96 = BUFFER_LOAD_DWORDX3_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_MIP_V1_V3_gfx10 %5:vreg_96, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_MIP_V3_V3_gfx10 %5:vreg_96, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+
+# GFX10-LABEL: name: image_load_mip_pck_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_MIP_PCK_V4_V3_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_mip_pck_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_96 = BUFFER_LOAD_DWORDX3_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_MIP_PCK_V1_V3_gfx10 %5:vreg_96, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_MIP_PCK_V3_V3_gfx10 %5:vreg_96, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+
+# GFX10-LABEL: name: image_load_mip_pck_sgn_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_MIP_PCK_SGN_V4_V3_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_mip_pck_sgn_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_96 = BUFFER_LOAD_DWORDX3_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_MIP_PCK_SGN_V1_V3_gfx10 %5:vreg_96, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_MIP_PCK_SGN_V3_V3_gfx10 %5:vreg_96, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_pck_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_PCK_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_pck_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_PCK_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_PCK_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_load_pck_sgn_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_LOAD_PCK_SGN_V4_V2_gfx10 %5, %3, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_load_pck_sgn_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vreg_64 = BUFFER_LOAD_DWORDX2_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_LOAD_PCK_SGN_V1_V2_gfx10 %5:vreg_64, %3:sgpr_256, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_LOAD_PCK_SGN_V3_V2_gfx10 %5:vreg_64, %3:sgpr_256, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
diff --git a/llvm/test/CodeGen/AMDGPU/merge-image-sample-gfx10.mir b/llvm/test/CodeGen/AMDGPU/merge-image-sample-gfx10.mir
new file mode 100644
index 0000000..7092314
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/merge-image-sample-gfx10.mir
@@ -0,0 +1,1173 @@
+# RUN: llc -march=amdgcn -mcpu=gfx1010 -verify-machineinstrs -run-pass si-load-store-opt -o - %s | FileCheck -check-prefix=GFX10 %s
+
+# GFX10-LABEL: name: image_sample_l_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_l_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+# GFX10-LABEL: name: image_sample_l_merged_v1v3_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub3
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub0_sub1_sub2
+
+name: image_sample_l_merged_v1v3_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_merged_v2v2
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY %8.sub0_sub1
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY killed %8.sub2_sub3
+
+name: image_sample_l_merged_v2v2
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 3, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+    %7:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 12, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_merged_v2v2_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY %8.sub2_sub3
+# GFX10: %{{[0-9]+}}:vreg_64 = COPY killed %8.sub0_sub1
+
+name: image_sample_l_merged_v2v2_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 12, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+    %7:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 3, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 8, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_merged_v3v1
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY %8.sub0_sub1_sub2
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY killed %8.sub3
+
+name: image_sample_l_merged_v3v1
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %7:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_merged_v3v1_reversed
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY %8.sub1_sub2_sub3
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY killed %8.sub0
+
+name: image_sample_l_merged_v3v1_reversed
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %7:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_divided_merged
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+
+name: image_sample_l_divided_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %8:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %9:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %7:vgpr_32, %7:vgpr_32, %7:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+    %10:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %11:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_divided_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_divided_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vreg_128 = COPY %2
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    IMAGE_STORE_V4_V2_nsa_gfx10 %4:vreg_128, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_dmask_overlapped_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_dmask_overlapped_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_dmask_not_disjoint_not_merged
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 11, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_dmask_not_disjoint_not_merged
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 4, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 11, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_0
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_0
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %7:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %8:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_1
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %6, %6, %6, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %4, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_1
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %5:vgpr_32 = COPY %2.sub3
+    %6:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %7:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %6, %6, %6, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %8:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %4, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_2
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %6, %6, %6, %4, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %4, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_2
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_128 = COPY $sgpr92_sgpr93_sgpr94_sgpr95
+    %4:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %5:vgpr_32 = COPY %2.sub3
+    %6:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %7:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %6, %6, %6, %4, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %8:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %6, %6, %6, %4, %3, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_3
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_4
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_4
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 1, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_5
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_5
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_6
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 1, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_6
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 1, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_7
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V2_nsa_gfx10 %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 1, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_7
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V2_nsa_gfx10 %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 1, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_8
+# GFX10: %{{[0-9]+}}:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, implicit $exec :: (dereferenceable load 8, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_8
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, implicit $exec :: (dereferenceable load 8, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_9
+# GFX10: %{{[0-9]+}}:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 1, 0, implicit $exec :: (dereferenceable load 8, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_9
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vreg_64 = IMAGE_SAMPLE_L_V2_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 1, 0, implicit $exec :: (dereferenceable load 8, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+# GFX10-LABEL: name: image_sample_l_not_merged_10
+# GFX10: %{{[0-9]+}}:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 1, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+
+name: image_sample_l_not_merged_10
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_V1_V3_nsa_gfx10 %5, %5, %5, %3, %2, 8, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_V3_V3_nsa_gfx10 %5, %5, %5, %3, %2, 7, 1, -1, 0, 0, 0, 0, 0, 0, 0, 1, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+
+
+# GFX10-LABEL: name: image_sample_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_V4_V2_nsa_gfx10 %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_V1_V2_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_V3_V2_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_b_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_B_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_b_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_B_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_B_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_b_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_B_CL_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_b_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_B_CL_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_B_CL_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_b_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_B_CL_O_V4_V5_nsa_gfx10 %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_b_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_B_CL_O_V1_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_B_CL_O_V3_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_b_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_B_O_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_b_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_B_O_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_B_O_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cd_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CD_V4_V6_nsa_gfx10 %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cd_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CD_V1_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CD_V3_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cd_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CD_CL_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cd_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CD_CL_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CD_CL_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cd_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CD_CL_O_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cd_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CD_CL_O_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CD_CL_O_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cd_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CD_O_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cd_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CD_O_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CD_O_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CL_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CL_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CL_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_CL_O_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_CL_O_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_CL_O_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_b_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_B_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_b_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_B_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_B_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_b_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_B_CL_V4_V5_nsa_gfx10 %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_b_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_B_CL_V1_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_B_CL_V3_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_b_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_B_CL_O_V4_V6_nsa_gfx10 %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_b_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_B_CL_O_V1_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_B_CL_O_V3_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_b_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_B_O_V4_V5_nsa_gfx10 %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_b_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_B_O_V1_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_B_O_V3_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cd_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CD_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cd_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CD_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CD_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cd_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CD_CL_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cd_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CD_CL_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CD_CL_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cd_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CD_CL_O_V4_V9_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cd_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CD_CL_O_V1_V9_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CD_CL_O_V3_V9_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cd_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CD_O_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cd_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CD_O_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CD_O_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CL_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CL_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CL_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_CL_O_V4_V5_nsa_gfx10 %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_CL_O_V1_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_CL_O_V3_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_d_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_D_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_d_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_D_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_D_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_d_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_D_CL_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_d_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_D_CL_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_D_CL_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_d_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_D_CL_O_V4_V9_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_d_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_D_CL_O_V1_V9_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_D_CL_O_V3_V9_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_d_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_D_O_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_d_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_D_O_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_D_O_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_l_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_L_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_l_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_L_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_L_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_lz_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_LZ_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_lz_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_LZ_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_LZ_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_lz_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_LZ_O_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_lz_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_LZ_O_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_LZ_O_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_l_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_L_O_V4_V5_nsa_gfx10 %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_l_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_L_O_V1_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_L_O_V3_V5_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_c_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_C_O_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_c_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_C_O_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_C_O_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_d_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_D_V4_V6_nsa_gfx10 %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_d_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_D_V1_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_D_V3_V6_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_d_cl_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_D_CL_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_d_cl_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_D_CL_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_D_CL_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_d_cl_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_D_CL_O_V4_V8_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_d_cl_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_D_CL_O_V1_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_D_CL_O_V3_V8_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_d_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_D_O_V4_V7_nsa_gfx10 %5, %5, %5, %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_d_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_D_O_V1_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_D_O_V3_V7_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_lz_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_LZ_V4_V2_nsa_gfx10 %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_lz_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_LZ_V1_V2_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_LZ_V3_V2_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_lz_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_LZ_O_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_lz_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_LZ_O_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_LZ_O_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_l_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_L_O_V4_V4_nsa_gfx10 %5, %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_l_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_L_O_V1_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_L_O_V3_V4_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
+
+
+# GFX10-LABEL: name: image_sample_o_merged_v1v3
+# GFX10: %{{[0-9]+}}:vreg_128 = IMAGE_SAMPLE_O_V4_V3_nsa_gfx10 %5, %5, %5, %3, %2, 15, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec, implicit $exec :: (dereferenceable load 16, align 4, addrspace 4)
+# GFX10: %{{[0-9]+}}:vgpr_32 = COPY %8.sub0
+# GFX10: %{{[0-9]+}}:vreg_96 = COPY killed %8.sub1_sub2_sub3
+
+name: image_sample_o_merged_v1v3
+body:             |
+  bb.0.entry:
+    %0:sgpr_64 = COPY $sgpr0_sgpr1
+    %1:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 36, 0, 0
+    %2:sgpr_128 = COPY $sgpr96_sgpr97_sgpr98_sgpr99
+    %3:sgpr_256 = S_LOAD_DWORDX8_IMM %1, 208, 0, 0
+    %4:vgpr_32 = COPY %2.sub3
+    %5:vgpr_32 = BUFFER_LOAD_DWORD_OFFSET %2:sgpr_128, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable invariant load 16)
+    %6:vgpr_32 = IMAGE_SAMPLE_O_V1_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 4, addrspace 4)
+    %7:vreg_96 = IMAGE_SAMPLE_O_V3_V3_nsa_gfx10 %5:vgpr_32, %5:vgpr_32, %5:vgpr_32, %3:sgpr_256, %2:sgpr_128, 14, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 12, align 16, addrspace 4)
+...
+---
-- 
2.7.4