[llvm-commits] CVS: llvm/lib/Target/X86/X86InstrInfo.cpp

[Evan Cheng]

Changes in directory llvm/lib/Target/X86:

X86InstrInfo.cpp updated: 1.55 -> 1.56
---
Log message:

Somehow I lost a condition when I was shuffling some code around. Anyway,
only transform a shufps to pshufd when the first two operands are the same.


---
Diffs of the changes:  (+1 -1)

 X86InstrInfo.cpp |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)


Index: llvm/lib/Target/X86/X86InstrInfo.cpp
diff -u llvm/lib/Target/X86/X86InstrInfo.cpp:1.55 llvm/lib/Target/X86/X86InstrInfo.cpp:1.56
--- llvm/lib/Target/X86/X86InstrInfo.cpp:1.55	Tue May 30 16:45:53 2006
+++ llvm/lib/Target/X86/X86InstrInfo.cpp	Tue May 30 17:13:36 2006
@@ -125,11 +125,11 @@
   case X86::SHUFPSrri: {
     assert(MI->getNumOperands() == 4 && "Unknown shufps instruction!");
     const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
-    if (!Subtarget->hasSSE2()) return 0;
     unsigned A = MI->getOperand(0).getReg();
     unsigned B = MI->getOperand(1).getReg();
     unsigned C = MI->getOperand(2).getReg();
     unsigned M = MI->getOperand(3).getImmedValue();
+    if (!Subtarget->hasSSE2() || B != C) return 0;
     return BuildMI(X86::PSHUFDri, 2, A).addReg(B).addImm(M);
   }
   }