Changes in directory llvm/lib/Transforms/Scalar:
InstructionCombining.cpp updated: 1.457 -> 1.458
---
Log message:
Fix InstCombine/2006-04-01-InfLoop.ll
---
Diffs of the changes: (+2 -1)
InstructionCombining.cpp | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.457
llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.458
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.457 Sat Apr 1
02:03:55 2006
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Sat Apr 1 16:05:01 2006
@@ -3008,7 +3008,8 @@
} else if (Op0I->getOpcode() == Instruction::And && Op0I->hasOneUse()) {
if (Op0I->getOperand(0) == Op1) // (A&B)^A ->
(B&A)^A
Op0I->swapOperands();
- if (Op0I->getOperand(1) == Op1) { // (B&A)^A == ~B & A
+ if (Op0I->getOperand(1) == Op1 && // (B&A)^A == ~B & A
+ !isa<ConstantInt>(Op1)) { // Canonical form is (B&C)^C
Instruction *N = BinaryOperator::createNot(Op0I->getOperand(0), "tmp");
InsertNewInstBefore(N, I);
return BinaryOperator::createAnd(N, Op1);
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