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author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2022-01-04 16:56:33 +0000 |
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committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2022-01-04 16:56:44 +0000 |
commit | 95f9eddbbcffa77685d0fd2e781521acb5d21ae4 (patch) | |
tree | a2542392c6b44ec409ce0eb2805e4416dc9b6dc4 | |
parent | 05594de2d77b6f4735b8d8d417039b60987b3a79 (diff) | |
download | llvm-95f9eddbbcffa77685d0fd2e781521acb5d21ae4.tar.gz |
[X86] combineSetCCMOVMSK - use APInt::getLowBitsSet to create bitmask. NFC.
SelectionDAG::getConstant creates an APInt internally anyway, and getLowBitsSet helps assert for legal bitwidths. Plus it silences static analyzer out-of-bounds shift warnings.
-rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 7d14ed79e1a9..ab61a0a51598 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -44117,7 +44117,7 @@ static SDValue combineSetCCMOVMSK(SDValue EFLAGS, X86::CondCode &CC, BCNumEltBits > NumEltBits && DAG.ComputeNumSignBits(BC) > (BCNumEltBits - NumEltBits)) { SDLoc DL(EFLAGS); - unsigned CmpMask = IsAnyOf ? 0 : ((1 << BCNumElts) - 1); + APInt CmpMask = APInt::getLowBitsSet(32, IsAnyOf ? 0 : BCNumElts); return DAG.getNode(X86ISD::CMP, DL, MVT::i32, DAG.getNode(X86ISD::MOVMSK, DL, MVT::i32, BC), DAG.getConstant(CmpMask, DL, MVT::i32)); |