diff options
Diffstat (limited to 'llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp index 08c039f3dec..e2e3f8cf0ea 100644 --- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp +++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp @@ -44,6 +44,17 @@ void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) { if (ZMask & 8) ShuffleMask[3] = SM_SentinelZero; } +void DecodeInsertElementMask(MVT VT, unsigned Idx, unsigned Len, + SmallVectorImpl<int> &ShuffleMask) { + unsigned NumElts = VT.getVectorNumElements(); + assert((Idx + Len) <= NumElts && "Insertion out of range"); + + for (unsigned i = 0; i != NumElts; ++i) + ShuffleMask.push_back(i); + for (unsigned i = 0; i != Len; ++i) + ShuffleMask[Idx + i] = NumElts + i; +} + // <3,1> or <6,7,2,3> void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask) { for (unsigned i = NElts / 2; i != NElts; ++i) |
