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Check for less than 0 in shuffle mask instead of -1. It's more consistent with other code related to shuffles and easier to implement in compiled code.

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llvm-svn: 172788
This commit is contained in:
Craig Topper 2013-01-18 05:30:07 +00:00
parent bf40e524fd
commit 215a93298b
1 changed files with 1 additions and 1 deletions
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lib/Transforms/InstCombine/InstCombineVectorOps.cpp
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@ -604,7 +604,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
// ShuffleVectorInst is equivalent to the original one.
for (unsigned i = 0; i < VWidth; ++i) {
int eltMask;
if (Mask[i] == -1) {
if (Mask[i] < 0) {
// This element is an undef value.
eltMask = -1;
} else if (Mask[i] < (int)LHSWidth) {