diff options
Diffstat (limited to 'llvm/lib/Target/X86/Utils')
| -rw-r--r-- | llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp | 7 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/Utils/X86ShuffleDecode.h | 3 |
2 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp index 863da74efbc..5da63bef4d7 100644 --- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp +++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp @@ -258,6 +258,13 @@ void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask, } } +void DecodeBLENDMask(MVT VT, unsigned Imm, + SmallVectorImpl<int> &ShuffleMask) { + int NumElements = VT.getVectorNumElements(); + for (int i = 0; i < NumElements; ++i) + ShuffleMask.push_back(((Imm >> i) & 1) ? NumElements + i : i); +} + /// 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) { diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h index 51ebe86259a..911e7047ee6 100644 --- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h +++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h @@ -70,6 +70,9 @@ void DecodePSHUFBMask(const ConstantDataSequential *C, void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask, SmallVectorImpl<int> &ShuffleMask); +/// \brief Decode a BLEND immediate mask into a shuffle mask. +void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); + void DecodeVPERM2X128Mask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); |
