[PATCH] D13106: AMDGPU: Remove dead code

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
arsenm added a subscriber: llvm-commits.
Herald added a subscriber: arsenm.

There's no point in checking VReg_1 because all uses
of it should already have been removed by SILowerI1Copies.

http://reviews.llvm.org/D13106

Files:
  lib/Target/AMDGPU/SIFixSGPRCopies.cpp

Index: lib/Target/AMDGPU/SIFixSGPRCopies.cpp
===================================================================
--- lib/Target/AMDGPU/SIFixSGPRCopies.cpp
+++ lib/Target/AMDGPU/SIFixSGPRCopies.cpp
@@ -193,15 +193,12 @@
     return false;
   }
 
-  const TargetRegisterClass *DstRC = MRI.getRegClass(DstReg);
-
-  const TargetRegisterClass *SrcRC;
-
-  if (!TargetRegisterInfo::isVirtualRegister(SrcReg) ||
-      MRI.getRegClass(SrcReg) == &AMDGPU::VReg_1RegClass)
+  if (!TargetRegisterInfo::isVirtualRegister(SrcReg))
     return false;
 
-  SrcRC = TRI->getSubRegClass(MRI.getRegClass(SrcReg), SrcSubReg);
+  const TargetRegisterClass *DstRC = MRI.getRegClass(DstReg);
+  const TargetRegisterClass *SrcRC
+    = TRI->getSubRegClass(MRI.getRegClass(SrcReg), SrcSubReg);
   return TRI->isSGPRClass(DstRC) && TRI->hasVGPRs(SrcRC);
 }
 


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