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Diffstat (limited to 'llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp')
-rw-r--r--llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index 713595d..1a51aa5 100644
--- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -556,8 +556,9 @@ void DecodeVPERMIL2PMask(MVT VT, unsigned M2Z, ArrayRef<uint64_t> RawMask,
void DecodeVPERMVMask(ArrayRef<uint64_t> RawMask,
SmallVectorImpl<int> &ShuffleMask) {
- for (int i = 0, e = RawMask.size(); i < e; ++i) {
- uint64_t M = RawMask[i];
+ uint64_t EltMaskSize = RawMask.size() - 1;
+ for (auto M : RawMask) {
+ M &= EltMaskSize;
ShuffleMask.push_back((int)M);
}
}