[llvm-commits] [llvm] r45878 - /llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp

[Chris Lattner]

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;