Changes in directory llvm/lib/Transforms/Scalar:
GVNPRE.cpp updated: 1.50 -> 1.51
---
Log message:
Reserve space in vectors before topologically sorting into them. This improves
the time to optimize 403.gcc from 28s to 23.5s.
---
Diffs of the changes: (+2 -0)
GVNPRE.cpp | 2 ++
1 files changed, 2 insertions(+)
Index: llvm/lib/Transforms/Scalar/GVNPRE.cpp
diff -u llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.50
llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.51
--- llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.50 Thu Jun 21 19:20:30 2007
+++ llvm/lib/Transforms/Scalar/GVNPRE.cpp Thu Jun 21 19:43:22 2007
@@ -585,6 +585,7 @@
/// above)
void GVNPRE::clean(SmallPtrSet<Value*, 32>& set) {
std::vector<Value*> worklist;
+ worklist.reserve(set.size());
topo_sort(set, worklist);
for (unsigned i = 0; i < worklist.size(); ++i) {
@@ -1173,6 +1174,7 @@
// If there is more than one predecessor...
if (pred_begin(BB) != pred_end(BB) && ++pred_begin(BB) != pred_end(BB)) {
std::vector<Value*> workList;
+ workList.reserve(anticIn.size());
topo_sort(anticIn, workList);
DOUT << "Merge Block: " << BB->getName() << "\n";
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