diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-03-18 19:33:41 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-03-18 20:24:14 +0000 |
| commit | 9d40292a64223c42bae7ffcc414702bc4394dafd (patch) | |
| tree | 39778b42d7d27f963e9cb3a9358d31253bba602b /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 47ce1406c8e602f462a3901eedc13269104639cb (diff) | |
| download | llvm-9d40292a64223c42bae7ffcc414702bc4394dafd.zip llvm-9d40292a64223c42bae7ffcc414702bc4394dafd.tar.gz llvm-9d40292a64223c42bae7ffcc414702bc4394dafd.tar.bz2 | |
[ValueTracking] Add computeKnownBits DemandedElts support to XOR instructions (PR36319)
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index d47d38d..f1adc03 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -1137,8 +1137,8 @@ static void computeKnownBitsFromOperator(const Operator *I, Known.One |= Known2.One; break; case Instruction::Xor: { - computeKnownBits(I->getOperand(1), Known, Depth + 1, Q); - computeKnownBits(I->getOperand(0), Known2, Depth + 1, Q); + computeKnownBits(I->getOperand(1), DemandedElts, Known, Depth + 1, Q); + computeKnownBits(I->getOperand(0), DemandedElts, Known2, Depth + 1, Q); // Output known-0 bits are known if clear or set in both the LHS & RHS. APInt KnownZeroOut = (Known.Zero & Known2.Zero) | (Known.One & Known2.One); |