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Apply temporary work around to fix llvm mis-compilation

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reported in PR 1556.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40133 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-07-21 00:34:29 +00:00
parent ffbaccae02
commit 00ae1a2f02
1 changed files with 3 additions and 1 deletions
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4
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -3872,7 +3872,9 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
}
// (V1 & V3)|(V2 & ~V3) -> ((V1 ^ V2) & V3) ^ V2
if (isOnlyUse(Op0) && isOnlyUse(Op1)) {
// Disable this transformations temporarily. This causes
// mis-compilation when V2 is undefined.
if (0 && isOnlyUse(Op0) && isOnlyUse(Op1)) {
// Try all combination of terms to find V3 and ~V3.
if (A->hasOneUse() && match(A, m_Not(m_Value(V3)))) {
if (V3 == B)