Author: lattner
Date: Fri Jan 11 13:36:30 2008
New Revision: 45878
URL: http://llvm.org/viewvc/llvm-project?rev=45878&view=rev
Log:
Use smallptrset instead of std::set for efficiency.
Modified:
llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp
Modified: llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp?rev=45878&r1=45877&r2=45878&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp Fri Jan 11 13:36:30 2008
@@ -282,7 +282,7 @@
// Because there could be several/many load instructions, remember which
// blocks we know to be transparent to the load.
- std::set<BasicBlock*> TranspBlocks;
+ SmallPtrSet<BasicBlock*, 16> TranspBlocks;
AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
TargetData &TD = getAnalysis<TargetData>();
@@ -304,7 +304,8 @@
// To do this, we perform a depth first search on the inverse CFG from the
// loading block.
for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI)
- for (idf_ext_iterator<BasicBlock*> I = idf_ext_begin(*PI, TranspBlocks),
+ for (idf_ext_iterator<BasicBlock*, SmallPtrSet<BasicBlock*, 16> >
+ I = idf_ext_begin(*PI, TranspBlocks),
E = idf_ext_end(*PI, TranspBlocks); I != E; ++I)
if (AA.canBasicBlockModify(**I, Arg, LoadSize))
return false;
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