Changes in directory llvm/lib/Transforms/Scalar:
InstructionCombining.cpp updated: 1.664 -> 1.665
---
Log message:
Implement isOneBitSet in terms of APInt::countPopulation.
---
Diffs of the changes: (+1 -2)
InstructionCombining.cpp | 3 +--
1 files changed, 1 insertion(+), 2 deletions(-)
Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.664
llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.665
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.664 Mon Mar 19
15:58:18 2007
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Mon Mar 19 16:04:43 2007
@@ -3474,8 +3474,7 @@
// isOneBitSet - Return true if there is exactly one bit set in the specified
// constant.
static bool isOneBitSet(const ConstantInt *CI) {
- uint64_t V = CI->getZExtValue();
- return V && (V & (V-1)) == 0;
+ return CI->getValue().countPopulation() == 1;
}
#if 0 // Currently unused
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