AMDGPU/GlobalISel: RegBankSelect for icmp/fcmp intrinsics

llvm-svn: 364696

diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
index c30d54f..3e451c6 100644 (file)
--- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -1518,6 +1518,18 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
                                                Src1Size);
       break;
     }
+    case Intrinsic::amdgcn_icmp:
+    case Intrinsic::amdgcn_fcmp: {
+      unsigned DstSize = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
+      // This is not VCCRegBank because this is not used in boolean contexts.
+      OpdsMapping[0] = AMDGPU::getValueMapping(AMDGPU::SGPRRegBankID, DstSize);
+      unsigned OpSize = MRI.getType(MI.getOperand(2).getReg()).getSizeInBits();
+      unsigned Op1Bank = getRegBankID(MI.getOperand(2).getReg(), MRI, *TRI);
+      unsigned Op2Bank = getRegBankID(MI.getOperand(3).getReg(), MRI, *TRI);
+      OpdsMapping[2] = AMDGPU::getValueMapping(Op1Bank, OpSize);
+      OpdsMapping[3] = AMDGPU::getValueMapping(Op2Bank, OpSize);
+      break;
+    }
     }
     break;
   }

diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.fcmp.mir b/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.fcmp.mir
new file mode 100644 (file)
index 0000000..0e5dd43
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.fcmp.mir
@@ -0,0 +1,67 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-fast -verify-machineinstrs -o - %s | FileCheck %s
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-greedy  -verify-machineinstrs -o - %s | FileCheck %s
+
+---
+name: fcmp_ss
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $sgpr1
+    ; CHECK-LABEL: name: fcmp_ss
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr1
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), [[COPY]](s32), [[COPY1]](s32), 1
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $sgpr1
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), %0, %1, 1
+...
+
+---
+name: fcmp_sv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: fcmp_sv
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), [[COPY]](s32), [[COPY1]](s32), 1
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $vgpr0
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), %0, %1, 1
+...
+
+---
+name: fcmp_vs
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: fcmp_vs
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), [[COPY]](s32), [[COPY1]](s32), 1
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $sgpr0
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), %0, %1, 1
+...
+
+---
+name: fcmp_vv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $vgpr0, $vgpr1
+    ; CHECK-LABEL: name: fcmp_vv
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr1
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), [[COPY]](s32), [[COPY1]](s32), 1
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $vgpr1
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.fcmp), %0, %1, 1
+...

diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.icmp.mir b/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.icmp.mir
new file mode 100644 (file)
index 0000000..3939036
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.icmp.mir
@@ -0,0 +1,67 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-fast -verify-machineinstrs -o - %s | FileCheck %s
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-greedy -verify-machineinstrs -o - %s | FileCheck %s
+
+---
+name: icmp_ss
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $sgpr1
+    ; CHECK-LABEL: name: icmp_ss
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr1
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), [[COPY]](s32), [[COPY1]](s32), 32
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $sgpr1
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), %0, %1, 32
+...
+
+---
+name: icmp_sv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: icmp_sv
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), [[COPY]](s32), [[COPY1]](s32), 32
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $vgpr0
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), %0, %1, 32
+...
+
+---
+name: icmp_vs
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: icmp_vs
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), [[COPY]](s32), [[COPY1]](s32), 32
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $sgpr0
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), %0, %1, 32
+...
+
+---
+name: icmp_vv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $vgpr0, $vgpr1
+    ; CHECK-LABEL: name: icmp_vv
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr1
+    ; CHECK: [[INT:%[0-9]+]]:sgpr(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), [[COPY]](s32), [[COPY1]](s32), 32
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $vgpr1
+    %2:_(s64) = G_INTRINSIC intrinsic(@llvm.amdgcn.icmp), %0, %1, 32
+...