diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
-rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 6281124..11ab8dc 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5001,9 +5001,12 @@ static bool getTargetConstantBitsFromNode(SDValue Op, unsigned EltSizeInBits, EVT VT = Op.getValueType(); unsigned SizeInBits = VT.getSizeInBits(); - assert((SizeInBits % EltSizeInBits) == 0 && "Can't split constant!"); unsigned NumElts = SizeInBits / EltSizeInBits; + // Can't split constant. + if ((SizeInBits % EltSizeInBits) != 0) + return false; + // Bitcast a source array of element bits to the target size. auto CastBitData = [&](APInt &UndefSrcElts, ArrayRef<APInt> SrcEltBits) { unsigned NumSrcElts = UndefSrcElts.getBitWidth(); @@ -45059,6 +45062,10 @@ bool X86TargetLowering::isGuaranteedNotToBeUndefOrPoisonForTargetNode( unsigned NumElts = DemandedElts.getBitWidth(); switch (Op.getOpcode()) { + case X86ISD::GlobalBaseReg: + case X86ISD::Wrapper: + case X86ISD::WrapperRIP: + return true; case X86ISD::BLENDI: case X86ISD::PSHUFD: case X86ISD::UNPCKL: @@ -45098,27 +45105,34 @@ bool X86TargetLowering::canCreateUndefOrPoisonForTargetNode( bool PoisonOnly, bool ConsiderFlags, unsigned Depth) const { switch (Op.getOpcode()) { + // SSE vector insert/extracts use modulo indices. + case X86ISD::PINSRB: + case X86ISD::PINSRW: + case X86ISD::PEXTRB: + case X86ISD::PEXTRW: + return false; // SSE vector multiplies are either inbounds or saturate. case X86ISD::VPMADDUBSW: case X86ISD::VPMADDWD: + return false; // SSE vector shifts handle out of bounds shift amounts. case X86ISD::VSHLI: case X86ISD::VSRLI: case X86ISD::VSRAI: return false; - // SSE blends. + // SSE blends. case X86ISD::BLENDI: case X86ISD::BLENDV: return false; - // SSE target shuffles. + // SSE target shuffles. case X86ISD::PSHUFD: case X86ISD::UNPCKL: case X86ISD::UNPCKH: case X86ISD::VPERMILPI: case X86ISD::VPERMV3: return false; - // SSE comparisons handle all icmp/fcmp cases. - // TODO: Add CMPM/MM with test coverage. + // SSE comparisons handle all icmp/fcmp cases. + // TODO: Add CMPM/MM with test coverage. case X86ISD::CMPP: case X86ISD::PCMPEQ: case X86ISD::PCMPGT: |