[llvm-commits] [llvm] r78250 - /llvm/trunk/lib/Target/X86/X86InstrInfo.cpp
Dan Gohman
gohman at apple.com
Wed Aug 5 15:19:00 PDT 2009
Author: djg
Date: Wed Aug 5 17:18:26 2009
New Revision: 78250
URL: http://llvm.org/viewvc/llvm-project?rev=78250&view=rev
Log:
Use GR32 for copies between GR32_NOSP and GR32_NOREX, as neither
is a subset of the other, but both are subsets of GR32.
Modified:
llvm/trunk/lib/Target/X86/X86InstrInfo.cpp
Modified: llvm/trunk/lib/Target/X86/X86InstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrInfo.cpp?rev=78250&r1=78249&r2=78250&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86InstrInfo.cpp Wed Aug 5 17:18:26 2009
@@ -1697,10 +1697,18 @@
CommonRC = SrcRC;
else if (!DestRC->hasSubClass(SrcRC)) {
// Neither of GR64_NOREX or GR64_NOSP is a superclass of the other,
- // but we want to copy then as GR64.
- if ((SrcRC == &X86::GR64RegClass || SrcRC->hasSuperClass(&X86::GR64RegClass)) &&
- (DestRC == &X86::GR64RegClass || DestRC->hasSuperClass(&X86::GR64RegClass)))
+ // but we want to copy then as GR64. Similarly, for GR32_NOREX and
+ // GR32_NOSP, copy as GR32.
+ if ((SrcRC == &X86::GR64RegClass ||
+ SrcRC->hasSuperClass(&X86::GR64RegClass)) &&
+ (DestRC == &X86::GR64RegClass ||
+ DestRC->hasSuperClass(&X86::GR64RegClass)))
CommonRC = &X86::GR64RegClass;
+ else if ((SrcRC == &X86::GR32RegClass ||
+ SrcRC->hasSuperClass(&X86::GR32RegClass)) &&
+ (DestRC == &X86::GR32RegClass ||
+ DestRC->hasSuperClass(&X86::GR32RegClass)))
+ CommonRC = &X86::GR32RegClass;
else
CommonRC = 0;
}
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