From 462516b73738694aa8d9806e9ca9e37174882f72 Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Thu, 7 Feb 2013 17:02:14 +0000
Subject: [PATCH] R600/SI: Use proper instructions for array/shadow samplers.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Patch by: Michel Dänzer

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 174634
---
 llvm/lib/Target/R600/R600Instructions.td | 16 +++++++++++-
 llvm/lib/Target/R600/SIInstructions.td   | 42 +++++++++++++++++++++++++++++---
 2 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Target/R600/R600Instructions.td b/llvm/lib/Target/R600/R600Instructions.td
index c9d1ffc..2eab765 100644
--- a/llvm/lib/Target/R600/R600Instructions.td
+++ b/llvm/lib/Target/R600/R600Instructions.td
@@ -399,7 +399,7 @@ class R600_TEX <bits<11> inst, string opName, list<dag> pattern,
 def TEX_SHADOW : PatLeaf<
   (imm),
   [{uint32_t TType = (uint32_t)N->getZExtValue();
-    return (TType >= 6 && TType <= 8) || (TType >= 11 && TType <= 13);
+    return (TType >= 6 && TType <= 8) || TType == 13;
   }]
 >;
 
@@ -410,6 +410,20 @@ def TEX_RECT : PatLeaf<
   }]
 >;
 
+def TEX_ARRAY : PatLeaf<
+  (imm),
+  [{uint32_t TType = (uint32_t)N->getZExtValue();
+    return TType == 9 || TType == 10 || TType == 15 || TType == 16;
+  }]
+>;
+
+def TEX_SHADOW_ARRAY : PatLeaf<
+  (imm),
+  [{uint32_t TType = (uint32_t)N->getZExtValue();
+    return TType == 11 || TType == 12 || TType == 17;
+  }]
+>;
+
 class EG_CF_RAT <bits <8> cf_inst, bits <6> rat_inst, bits<4> rat_id, dag outs,
                  dag ins, string asm, list<dag> pattern> :
     InstR600ISA <outs, ins, asm, pattern> {
diff --git a/llvm/lib/Target/R600/SIInstructions.td b/llvm/lib/Target/R600/SIInstructions.td
index 22ec7fe..dd5bb42 100644
--- a/llvm/lib/Target/R600/SIInstructions.td
+++ b/llvm/lib/Target/R600/SIInstructions.td
@@ -511,12 +511,12 @@ def IMAGE_SAMPLE_L : MIMG_Load_Helper <0x00000024, "IMAGE_SAMPLE_L">;
 def IMAGE_SAMPLE_B : MIMG_Load_Helper <0x00000025, "IMAGE_SAMPLE_B">;
 //def IMAGE_SAMPLE_B_CL : MIMG_NoPattern_ <"IMAGE_SAMPLE_B_CL", 0x00000026>;
 //def IMAGE_SAMPLE_LZ : MIMG_NoPattern_ <"IMAGE_SAMPLE_LZ", 0x00000027>;
-//def IMAGE_SAMPLE_C : MIMG_NoPattern_ <"IMAGE_SAMPLE_C", 0x00000028>;
+def IMAGE_SAMPLE_C : MIMG_Load_Helper <0x00000028, "IMAGE_SAMPLE_C">;
 //def IMAGE_SAMPLE_C_CL : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_CL", 0x00000029>;
 //def IMAGE_SAMPLE_C_D : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_D", 0x0000002a>;
 //def IMAGE_SAMPLE_C_D_CL : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_D_CL", 0x0000002b>;
-//def IMAGE_SAMPLE_C_L : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_L", 0x0000002c>;
-//def IMAGE_SAMPLE_C_B : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_B", 0x0000002d>;
+def IMAGE_SAMPLE_C_L : MIMG_Load_Helper <0x0000002c, "IMAGE_SAMPLE_C_L">;
+def IMAGE_SAMPLE_C_B : MIMG_Load_Helper <0x0000002d, "IMAGE_SAMPLE_C_B">;
 //def IMAGE_SAMPLE_C_B_CL : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_B_CL", 0x0000002e>;
 //def IMAGE_SAMPLE_C_LZ : MIMG_NoPattern_ <"IMAGE_SAMPLE_C_LZ", 0x0000002f>;
 //def IMAGE_SAMPLE_O : MIMG_NoPattern_ <"IMAGE_SAMPLE_O", 0x00000030>;
@@ -1214,14 +1214,50 @@ class SampleRectPattern<Intrinsic name, MIMG opcode, RegisterClass addr_class,
           SReg_256:$rsrc, SReg_128:$sampler)
 >;
 
+class SampleArrayPattern<Intrinsic name, MIMG opcode, RegisterClass addr_class,
+                         ValueType addr_type> : Pat <
+    (name imm:$writemask, (addr_type addr_class:$addr),
+          SReg_256:$rsrc, SReg_128:$sampler, TEX_ARRAY),
+    (opcode imm:$writemask, 0, 0, 1, 0, 0, 0, 0,
+          (EXTRACT_SUBREG addr_class:$addr, sub0),
+          SReg_256:$rsrc, SReg_128:$sampler)
+>;
+
+class SampleShadowPattern<Intrinsic name, MIMG opcode,
+                          RegisterClass addr_class, ValueType addr_type> : Pat <
+    (name imm:$writemask, (addr_type addr_class:$addr),
+          SReg_256:$rsrc, SReg_128:$sampler, TEX_SHADOW),
+    (opcode imm:$writemask, 0, 0, 0, 0, 0, 0, 0,
+          (EXTRACT_SUBREG addr_class:$addr, sub0),
+          SReg_256:$rsrc, SReg_128:$sampler)
+>;
+
+class SampleShadowArrayPattern<Intrinsic name, MIMG opcode,
+                               RegisterClass addr_class, ValueType addr_type> : Pat <
+    (name imm:$writemask, (addr_type addr_class:$addr),
+          SReg_256:$rsrc, SReg_128:$sampler, TEX_SHADOW_ARRAY),
+    (opcode imm:$writemask, 0, 0, 1, 0, 0, 0, 0,
+          (EXTRACT_SUBREG addr_class:$addr, sub0),
+          SReg_256:$rsrc, SReg_128:$sampler)
+>;
+
 /* int_SI_sample* for texture lookups consuming more address parameters */
 multiclass SamplePatterns<RegisterClass addr_class, ValueType addr_type> {
   def : SamplePattern <int_SI_sample, IMAGE_SAMPLE, addr_class, addr_type>;
   def : SampleRectPattern <int_SI_sample, IMAGE_SAMPLE, addr_class, addr_type>;
+  def : SampleArrayPattern <int_SI_sample, IMAGE_SAMPLE, addr_class, addr_type>;
+  def : SampleShadowPattern <int_SI_sample, IMAGE_SAMPLE_C, addr_class, addr_type>;
+  def : SampleShadowArrayPattern <int_SI_sample, IMAGE_SAMPLE_C, addr_class, addr_type>;
 
   def : SamplePattern <int_SI_samplel, IMAGE_SAMPLE_L, addr_class, addr_type>;
+  def : SampleArrayPattern <int_SI_samplel, IMAGE_SAMPLE_L, addr_class, addr_type>;
+  def : SampleShadowPattern <int_SI_samplel, IMAGE_SAMPLE_C_L, addr_class, addr_type>;
+  def : SampleShadowArrayPattern <int_SI_samplel, IMAGE_SAMPLE_C_L, addr_class, addr_type>;
 
   def : SamplePattern <int_SI_sampleb, IMAGE_SAMPLE_B, addr_class, addr_type>;
+  def : SampleArrayPattern <int_SI_sampleb, IMAGE_SAMPLE_B, addr_class, addr_type>;
+  def : SampleShadowPattern <int_SI_sampleb, IMAGE_SAMPLE_C_B, addr_class, addr_type>;
+  def : SampleShadowArrayPattern <int_SI_sampleb, IMAGE_SAMPLE_C_B, addr_class, addr_type>;
 }
 
 defm : SamplePatterns<VReg_64, v2i32>;
-- 
2.7.4