Changes in directory llvm/lib/Transforms/Scalar:
InstructionCombining.cpp updated: 1.453 -> 1.454
---
Log message:
Fix Transforms/InstCombine/2006-03-30-ExtractElement.ll
---
Diffs of the changes: (+7 -3)
InstructionCombining.cpp | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.453
llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.454
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.453 Sat Mar 25
15:58:26 2006
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Thu Mar 30 16:02:40 2006
@@ -6704,9 +6704,13 @@
if (IE->getOperand(2) == EI.getOperand(1))
return ReplaceInstUsesWith(EI, IE->getOperand(1));
// If the inserted and extracted elements are constants, they must not
- // be the same value, replace with the pre-inserted value.
- if (isa<Constant>(IE->getOperand(2)) &&
isa<Constant>(EI.getOperand(1)))
- return ReplaceInstUsesWith(EI, IE->getOperand(0));
+ // be the same value, extract from the pre-inserted value instead.
+ if (isa<Constant>(IE->getOperand(2)) &&
+ isa<Constant>(EI.getOperand(1))) {
+ AddUsesToWorkList(EI);
+ EI.setOperand(0, IE->getOperand(0));
+ return &EI;
+ }
}
}
return 0;
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