Changes in directory llvm/lib/Target/X86:
X86ISelLowering.cpp updated: 1.237 -> 1.238
---
Log message:
A splat of a vector constant of all zero or all one is the vector constant.
---
Diffs of the changes: (+2 -0)
X86ISelLowering.cpp | 2 ++
1 files changed, 2 insertions(+)
Index: llvm/lib/Target/X86/X86ISelLowering.cpp
diff -u llvm/lib/Target/X86/X86ISelLowering.cpp:1.237
llvm/lib/Target/X86/X86ISelLowering.cpp:1.238
--- llvm/lib/Target/X86/X86ISelLowering.cpp:1.237 Wed Jul 12 11:59:49 2006
+++ llvm/lib/Target/X86/X86ISelLowering.cpp Thu Jul 20 18:09:47 2006
@@ -2393,6 +2393,8 @@
bool V2IsUndef = V2.getOpcode() == ISD::UNDEF;
if (isSplatMask(PermMask.Val)) {
+ if (ISD::isBuildVectorAllZeros(V1.Val) ||
ISD::isBuildVectorAllOnes(V1.Val))
+ return V1;
if (NumElems <= 4) return Op;
// Promote it to a v4i32 splat.
return PromoteSplat(Op, DAG);
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