[llvm] r244062 - AMDGPU/SI: Remove EXECReg

[Matt Arsenault]

Author: arsenm
Date: Wed Aug  5 11:42:57 2015
New Revision: 244062

URL: http://llvm.org/viewvc/llvm-project?rev=244062&view=rev
Log:
AMDGPU/SI: Remove EXECReg

For the same reasons as the other physical registers.

Modified:
    llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.cpp
    llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h
    llvm/trunk/lib/Target/AMDGPU/SIInstructions.td
    llvm/trunk/lib/Target/AMDGPU/SILowerControlFlow.cpp
    llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.td

Modified: llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.cpp?rev=244062&r1=244061&r2=244062&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.cpp Wed Aug  5 11:42:57 2015
@@ -898,11 +898,6 @@ bool SIInstrInfo::isMov(unsigned Opcode)
   }
 }
 
-bool
-SIInstrInfo::isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const {
-  return RC != &AMDGPU::EXECRegRegClass;
-}
-
 static void removeModOperands(MachineInstr &MI) {
   unsigned Opc = MI.getOpcode();
   int Src0ModIdx = AMDGPU::getNamedOperandIdx(Opc,

Modified: llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h?rev=244062&r1=244061&r2=244062&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h Wed Aug  5 11:42:57 2015
@@ -132,8 +132,6 @@ public:
                               unsigned DstReg, unsigned SrcReg) const override;
   bool isMov(unsigned Opcode) const override;
 
-  bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const override;
-
   bool FoldImmediate(MachineInstr *UseMI, MachineInstr *DefMI,
                      unsigned Reg, MachineRegisterInfo *MRI) const final;
 

Modified: llvm/trunk/lib/Target/AMDGPU/SIInstructions.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIInstructions.td?rev=244062&r1=244061&r2=244062&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstructions.td (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIInstructions.td Wed Aug  5 11:42:57 2015
@@ -458,16 +458,16 @@ def S_CBRANCH_VCCNZ : SOPP <
   "s_cbranch_vccnz $simm16"
 >;
 
-let DisableEncoding = "$exec" in {
+let Uses = [EXEC] in {
 def S_CBRANCH_EXECZ : SOPP <
-  0x00000008, (ins sopp_brtarget:$simm16, EXECReg:$exec),
+  0x00000008, (ins sopp_brtarget:$simm16),
   "s_cbranch_execz $simm16"
 >;
 def S_CBRANCH_EXECNZ : SOPP <
-  0x00000009, (ins sopp_brtarget:$simm16, EXECReg:$exec),
+  0x00000009, (ins sopp_brtarget:$simm16),
   "s_cbranch_execnz $simm16"
 >;
-} // End DisableEncoding = "$exec"
+} // End Uses = [EXEC]
 
 
 } // End isBranch = 1

Modified: llvm/trunk/lib/Target/AMDGPU/SILowerControlFlow.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SILowerControlFlow.cpp?rev=244062&r1=244061&r2=244062&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SILowerControlFlow.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SILowerControlFlow.cpp Wed Aug  5 11:42:57 2015
@@ -140,8 +140,7 @@ void SILowerControlFlowPass::Skip(Machin
 
   DebugLoc DL = From.getDebugLoc();
   BuildMI(*From.getParent(), &From, DL, TII->get(AMDGPU::S_CBRANCH_EXECZ))
-          .addOperand(To)
-          .addReg(AMDGPU::EXEC);
+    .addOperand(To);
 }
 
 void SILowerControlFlowPass::SkipIfDead(MachineInstr &MI) {
@@ -159,8 +158,7 @@ void SILowerControlFlowPass::SkipIfDead(
 
   // If the exec mask is non-zero, skip the next two instructions
   BuildMI(MBB, Insert, DL, TII->get(AMDGPU::S_CBRANCH_EXECNZ))
-          .addImm(3)
-          .addReg(AMDGPU::EXEC);
+    .addImm(3);
 
   // Exec mask is zero: Export to NULL target...
   BuildMI(MBB, Insert, DL, TII->get(AMDGPU::EXP))
@@ -269,8 +267,7 @@ void SILowerControlFlowPass::Loop(Machin
           .addReg(Src);
 
   BuildMI(MBB, &MI, DL, TII->get(AMDGPU::S_CBRANCH_EXECNZ))
-          .addOperand(MI.getOperand(1))
-          .addReg(AMDGPU::EXEC);
+    .addOperand(MI.getOperand(1));
 
   MI.eraseFromParent();
 }
@@ -385,8 +382,7 @@ void SILowerControlFlowPass::LoadM0(Mach
 
     // Loop back to V_READFIRSTLANE_B32 if there are still variants to cover
     BuildMI(MBB, &MI, DL, TII->get(AMDGPU::S_CBRANCH_EXECNZ))
-            .addImm(-7)
-            .addReg(AMDGPU::EXEC);
+      .addImm(-7);
 
     // Restore EXEC
     BuildMI(MBB, &MI, DL, TII->get(AMDGPU::S_MOV_B64), AMDGPU::EXEC)

Modified: llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.td?rev=244062&r1=244061&r2=244062&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.td (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.td Wed Aug  5 11:42:57 2015
@@ -183,7 +183,6 @@ class RegImmMatcher<string name> : AsmOp
 }
 
 def VCCReg : RegisterClass<"AMDGPU", [i64, i1], 64, (add VCC)>;
-def EXECReg : RegisterClass<"AMDGPU", [i64, i1], 64, (add EXEC)>;
 
 // Register class for all scalar registers (SGPRs + Special Registers)
 def SReg_32 : RegisterClass<"AMDGPU", [i32, f32], 32,
@@ -193,7 +192,7 @@ def SReg_32 : RegisterClass<"AMDGPU", [i
 def SGPR_64 : RegisterClass<"AMDGPU", [v2i32, i64, f64], 64, (add SGPR_64Regs)>;
 
 def SReg_64 : RegisterClass<"AMDGPU", [v2i32, i64, f64, i1], 64,
-  (add SGPR_64, VCCReg, EXECReg, FLAT_SCR)
+  (add SGPR_64, VCCReg, EXEC, FLAT_SCR)
 >;
 
 def SReg_128 : RegisterClass<"AMDGPU", [v4i32, v16i8], 128, (add SGPR_128)>;