Changes in directory llvm/lib/Transforms/Scalar:
InstructionCombining.cpp updated: 1.668 -> 1.669
---
Log message:
Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris.
---
Diffs of the changes: (+1 -1)
InstructionCombining.cpp | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.668
llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.669
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.668 Mon Mar 19
16:29:50 2007
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Mon Mar 19 19:16:52 2007
@@ -3472,7 +3472,7 @@
// isOneBitSet - Return true if there is exactly one bit set in the specified
// constant.
static bool isOneBitSet(const ConstantInt *CI) {
- return CI->getValue().countPopulation() == 1;
+ return CI->getValue().isPowerOf2();
}
#if 0 // Currently unused
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