Changes in directory llvm/lib/Support:
FoldingSet.cpp updated: 1.15 -> 1.16
---
Log message:
Encode small integers more densely in foldingset, avoiding overflowing the
SmallVector as often.
---
Diffs of the changes: (+4 -1)
FoldingSet.cpp | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
Index: llvm/lib/Support/FoldingSet.cpp
diff -u llvm/lib/Support/FoldingSet.cpp:1.15
llvm/lib/Support/FoldingSet.cpp:1.16
--- llvm/lib/Support/FoldingSet.cpp:1.15 Wed Jan 31 23:33:21 2007
+++ llvm/lib/Support/FoldingSet.cpp Sat Feb 3 19:48:10 2007
@@ -44,7 +44,10 @@
}
void FoldingSetImpl::NodeID::AddInteger(uint64_t I) {
Bits.push_back(unsigned(I));
- Bits.push_back(unsigned(I >> 32));
+
+ // If the integer is small, encode it just as 32-bits.
+ if ((uint64_t)(int)I != I)
+ Bits.push_back(unsigned(I >> 32));
}
void FoldingSetImpl::NodeID::AddFloat(float F) {
Bits.push_back(FloatToBits(F));
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