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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-03-18 15:31:49 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-03-18 15:38:15 +0000 |
| commit | 06150e8356c366900491b8bcb8cec8acbd15f168 (patch) | |
| tree | 055a2d20d933455210e5a09dd637dd0283c88499 /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 9f981e9adf9c8d29bb80306daf08d2770263ade6 (diff) | |
| download | llvm-06150e8356c366900491b8bcb8cec8acbd15f168.zip llvm-06150e8356c366900491b8bcb8cec8acbd15f168.tar.gz llvm-06150e8356c366900491b8bcb8cec8acbd15f168.tar.bz2 | |
[ValueTracking] Add computeKnownBits DemandedElts support to AND 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 d4f4e6e..48591c5 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -1104,8 +1104,8 @@ static void computeKnownBitsFromOperator(const Operator *I, break; case Instruction::And: { // If either the LHS or the RHS are Zero, the result is zero. - 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-1 bits are only known if set in both the LHS & RHS. Known.One &= Known2.One; |