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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-07-05 18:31:17 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-07-05 18:31:17 +0000 |
| commit | 48adedffb7ee3a38ab6f1540fa4277ead8c75a53 (patch) | |
| tree | ea626902cbc822a6f504d887e89ae6681c57d3c1 /llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp | |
| parent | 4d950ef892b13100b2025108605ae1b0a3a96c64 (diff) | |
| download | llvm-48adedffb7ee3a38ab6f1540fa4277ead8c75a53.zip llvm-48adedffb7ee3a38ab6f1540fa4277ead8c75a53.tar.gz llvm-48adedffb7ee3a38ab6f1540fa4277ead8c75a53.tar.bz2 | |
[X86][AVX512] Fixed decoding of permd/permpd variable mask shuffles + enabled them for target shuffle combining
Corrected element mask masking to extract the bottom index bits (now matches the perm2 implementation but for unary inputs).
llvm-svn: 274571
Diffstat (limited to 'llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp | 5 |
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); } } |