[llvm] r225989 - R600/SI: Use IMPLICIT_DEF and KILL when failing to spill VGPRs

[Tom Stellard]

Author: tstellar
Date: Wed Jan 14 09:42:34 2015
New Revision: 225989

URL: http://llvm.org/viewvc/llvm-project?rev=225989&view=rev
Log:
R600/SI: Use IMPLICIT_DEF and KILL when failing to spill VGPRs

This helps us avoid 'invalid register class for operand' verifier
errors.

Modified:
    llvm/trunk/lib/Target/R600/SIInstrInfo.cpp

Modified: llvm/trunk/lib/Target/R600/SIInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/SIInstrInfo.cpp?rev=225989&r1=225988&r2=225989&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/SIInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/R600/SIInstrInfo.cpp Wed Jan 14 09:42:34 2015
@@ -488,7 +488,7 @@ void SIInstrInfo::storeRegToStackSlot(Ma
     LLVMContext &Ctx = MF->getFunction()->getContext();
     Ctx.emitError("SIInstrInfo::storeRegToStackSlot - Do not know how to"
                   " spill register");
-    BuildMI(MBB, MI, DL, get(AMDGPU::V_MOV_B32_e32), AMDGPU::VGPR0)
+    BuildMI(MBB, MI, DL, get(AMDGPU::KILL))
             .addReg(SrcReg);
   }
 }
@@ -535,8 +535,7 @@ void SIInstrInfo::loadRegFromStackSlot(M
     LLVMContext &Ctx = MF->getFunction()->getContext();
     Ctx.emitError("SIInstrInfo::loadRegFromStackSlot - Do not know how to"
                   " restore register");
-    BuildMI(MBB, MI, DL, get(AMDGPU::V_MOV_B32_e32), DestReg)
-            .addReg(AMDGPU::VGPR0);
+    BuildMI(MBB, MI, DL, get(AMDGPU::IMPLICIT_DEF), DestReg);
   }
 }