diff options
Diffstat (limited to 'llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp index 899080afd62..713595dbbc1 100644 --- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp +++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp @@ -382,12 +382,14 @@ void DecodeVPPERMMask(ArrayRef<uint64_t> RawMask, } } - /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD. -/// No VT provided since it only works on 256-bit, 4 element vectors. -void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) { - for (unsigned i = 0; i != 4; ++i) { - ShuffleMask.push_back((Imm >> (2 * i)) & 3); - } +/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD. +void DecodeVPERMMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) { + assert((VT.is256BitVector() || VT.is512BitVector()) && + (VT.getScalarSizeInBits() == 64) && "Unexpected vector value type"); + unsigned NumElts = VT.getVectorNumElements(); + for (unsigned l = 0; l != NumElts; l += 4) + for (unsigned i = 0; i != 4; ++i) + ShuffleMask.push_back(l + ((Imm >> (2 * i)) & 3)); } void DecodeZeroExtendMask(MVT SrcScalarVT, MVT DstVT, SmallVectorImpl<int> &Mask) { |
