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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-10-08 17:21:18 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-10-08 17:21:18 +0000 |
| commit | dc32c844f91ce90c9438cfbda71b9c7dfcadfe5b (patch) | |
| tree | f39e8375d1fb82f4b7fb6b4e8b72abf966a6b052 /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | c97775c03c1f91de5d58c8a2de3809db112e84f0 (diff) | |
| download | bcm5719-llvm-dc32c844f91ce90c9438cfbda71b9c7dfcadfe5b.tar.gz bcm5719-llvm-dc32c844f91ce90c9438cfbda71b9c7dfcadfe5b.zip | |
[X86] getTargetConstantBitsFromNode - add support for decoding scalar constants
llvm-svn: 315182
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index b020644d07e..d066d5c1077 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5353,6 +5353,13 @@ static bool getTargetConstantBitsFromNode(SDValue Op, unsigned EltSizeInBits, return CastBitData(UndefSrcElts, SrcEltBits); } + // Extract scalar constant bits. + if (auto *Cst = dyn_cast<ConstantSDNode>(Op)) { + APInt UndefSrcElts = APInt::getNullValue(1); + SmallVector<APInt, 64> SrcEltBits(1, Cst->getAPIntValue()); + return CastBitData(UndefSrcElts, SrcEltBits); + } + // Extract constant bits from build vector. if (ISD::isBuildVectorOfConstantSDNodes(Op.getNode())) { unsigned SrcEltSizeInBits = VT.getScalarSizeInBits(); |
