diff options
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineCalls.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCalls.cpp b/lib/Transforms/InstCombine/InstCombineCalls.cpp index 4b8a67d94d..243937705a 100644 --- a/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -597,6 +597,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { case Intrinsic::x86_sse41_pmovzxbw: case Intrinsic::x86_sse41_pmovzxwd: case Intrinsic::x86_sse41_pmovzxdq: { + // pmov{s|z}x ignores the upper half of their input vectors. unsigned VWidth = cast<VectorType>(II->getArgOperand(0)->getType())->getNumElements(); unsigned LowHalfElts = VWidth / 2; |