[llvm] r175755 - R600/SI: use patterns for clamp, fabs, fneg

[Christian Konig]

Author: ckoenig
Date: Thu Feb 21 09:17:27 2013
New Revision: 175755

URL: http://llvm.org/viewvc/llvm-project?rev=175755&view=rev
Log:
R600/SI: use patterns for clamp, fabs, fneg

Instead of using custom inserters, it's simpler and
should make DAG folding easier.

Signed-off-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

Modified:
    llvm/trunk/lib/Target/R600/SIISelLowering.cpp
    llvm/trunk/lib/Target/R600/SIInstructions.td

Modified: llvm/trunk/lib/Target/R600/SIISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/SIISelLowering.cpp?rev=175755&r1=175754&r2=175755&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/SIISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/R600/SIISelLowering.cpp Thu Feb 21 09:17:27 2013
@@ -62,7 +62,6 @@ SITargetLowering::SITargetLowering(Targe
 
 MachineBasicBlock * SITargetLowering::EmitInstrWithCustomInserter(
     MachineInstr * MI, MachineBasicBlock * BB) const {
-  const TargetInstrInfo * TII = getTargetMachine().getInstrInfo();
   MachineRegisterInfo & MRI = BB->getParent()->getRegInfo();
   MachineBasicBlock::iterator I = MI;
 
@@ -70,41 +69,6 @@ MachineBasicBlock * SITargetLowering::Em
   default:
     return AMDGPUTargetLowering::EmitInstrWithCustomInserter(MI, BB);
   case AMDGPU::BRANCH: return BB;
-  case AMDGPU::CLAMP_SI:
-    BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::V_ADD_F32_e64))
-           .addOperand(MI->getOperand(0))
-           .addOperand(MI->getOperand(1))
-           .addImm(0x80) // SRC1
-           .addImm(0) // ABS
-           .addImm(1) // CLAMP
-           .addImm(0) // OMOD
-           .addImm(0); // NEG
-    MI->eraseFromParent();
-    break;
-
-  case AMDGPU::FABS_SI:
-    BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::V_ADD_F32_e64))
-                 .addOperand(MI->getOperand(0))
-                 .addOperand(MI->getOperand(1))
-                 .addImm(0x80) // SRC1
-                 .addImm(1) // ABS
-                 .addImm(0) // CLAMP
-                 .addImm(0) // OMOD
-                 .addImm(0); // NEG
-    MI->eraseFromParent();
-    break;
-
-  case AMDGPU::FNEG_SI:
-    BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDGPU::V_ADD_F32_e64))
-                 .addOperand(MI->getOperand(0))
-                 .addOperand(MI->getOperand(1))
-                 .addImm(0x80) // SRC1
-                 .addImm(0) // ABS
-                 .addImm(0) // CLAMP
-                 .addImm(0) // OMOD
-                 .addImm(1); // NEG
-    MI->eraseFromParent();
-    break;
   case AMDGPU::SHADER_TYPE:
     BB->getParent()->getInfo<SIMachineFunctionInfo>()->ShaderType =
                                         MI->getOperand(0).getImm();

Modified: llvm/trunk/lib/Target/R600/SIInstructions.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/SIInstructions.td?rev=175755&r1=175754&r2=175755&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/SIInstructions.td (original)
+++ llvm/trunk/lib/Target/R600/SIInstructions.td Thu Feb 21 09:17:27 2013
@@ -1187,10 +1187,6 @@ defm : SamplePatterns<VReg_128, v4i32>;
 defm : SamplePatterns<VReg_256, v8i32>;
 defm : SamplePatterns<VReg_512, v16i32>;
 
-def CLAMP_SI : CLAMP<VReg_32>;
-def FABS_SI : FABS<VReg_32>;
-def FNEG_SI : FNEG<VReg_32>;
-
 def : Extract_Element <f32, v4f32, VReg_128, 0, sub0>;
 def : Extract_Element <f32, v4f32, VReg_128, 1, sub1>;
 def : Extract_Element <f32, v4f32, VReg_128, 2, sub2>;
@@ -1214,6 +1210,28 @@ def : BitConvert <i32, f32, VReg_32>;
 def : BitConvert <f32, i32, SReg_32>;
 def : BitConvert <f32, i32, VReg_32>;
 
+/********** =================== **********/
+/********** Src & Dst modifiers **********/
+/********** =================== **********/
+
+def : Pat <
+  (int_AMDIL_clamp VReg_32:$src, (f32 FP_ZERO), (f32 FP_ONE)),
+  (V_ADD_F32_e64 VReg_32:$src, (i32 0x80 /* SRC1 */),
+   0 /* ABS */, 1 /* CLAMP */, 0 /* OMOD */, 0 /* NEG */)
+>;
+
+def : Pat <
+  (fabs VReg_32:$src),
+  (V_ADD_F32_e64 VReg_32:$src, (i32 0x80 /* SRC1 */),
+   1 /* ABS */, 0 /* CLAMP */, 0 /* OMOD */, 0 /* NEG */)
+>;
+
+def : Pat <
+  (fneg VReg_32:$src),
+  (V_ADD_F32_e64 VReg_32:$src, (i32 0x80 /* SRC1 */),
+   0 /* ABS */, 0 /* CLAMP */, 0 /* OMOD */, 1 /* NEG */)
+>;
+
 /********** ================== **********/
 /********** Immediate Patterns **********/
 /********** ================== **********/