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author | Davide Italiano <davide@freebsd.org> | 2017-01-19 21:07:42 +0000 |
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committer | Davide Italiano <davide@freebsd.org> | 2017-01-19 21:07:42 +0000 |
commit | f3e9b57b208415cdbeea3f950209f79710860536 (patch) | |
tree | e77a83a2e564821a0f7dff4865d800373907203f /lib/Transforms/Scalar/SCCP.cpp | |
parent | 9a63b871bd87eef8eca931cd60879509ec0cc55b (diff) |
[SCCP] Update comment in visitBinaryOp() after recent changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292519 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/SCCP.cpp')
-rw-r--r-- | lib/Transforms/Scalar/SCCP.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp index 34be9069248..9c5fa5c1426 100644 --- a/lib/Transforms/Scalar/SCCP.cpp +++ b/lib/Transforms/Scalar/SCCP.cpp @@ -910,9 +910,10 @@ void SCCPSolver::visitBinaryOperator(Instruction &I) { // Otherwise, one of our operands is overdefined. Try to produce something // better than overdefined with some tricks. - - // If this is an AND or OR with 0 or -1, it doesn't matter that the other - // operand is overdefined. + // If this is: + // -> AND/MUL with 0 + // -> OR with -1 + // it doesn't matter that the other operand is overdefined. if (I.getOpcode() == Instruction::And || I.getOpcode() == Instruction::Mul || I.getOpcode() == Instruction::Or) { LatticeVal *NonOverdefVal = nullptr; |