[llvm-commits] CVS: llvm/lib/Analysis/BasicAliasAnalysis.cpp

[Chris Lattner]

Changes in directory llvm/lib/Analysis:

BasicAliasAnalysis.cpp updated: 1.105 -> 1.106
---
Log message:

Switch some std::vector's to SmallVectors.  This speeds up -load-vn -gcse
by 6% on tramp3d.


---
Diffs of the changes:  (+5 -3)

 BasicAliasAnalysis.cpp |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)


Index: llvm/lib/Analysis/BasicAliasAnalysis.cpp
diff -u llvm/lib/Analysis/BasicAliasAnalysis.cpp:1.105 
llvm/lib/Analysis/BasicAliasAnalysis.cpp:1.106
--- llvm/lib/Analysis/BasicAliasAnalysis.cpp:1.105      Sat Feb 10 16:12:53 2007
+++ llvm/lib/Analysis/BasicAliasAnalysis.cpp    Sat Feb 10 16:15:31 2007
@@ -22,6 +22,7 @@
 #include "llvm/Instructions.h"
 #include "llvm/Pass.h"
 #include "llvm/Target/TargetData.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/GetElementPtrTypeIterator.h"
 #include "llvm/Support/ManagedStatic.h"
@@ -160,7 +161,8 @@
   return 0;
 }
 
-static const Value *GetGEPOperands(const Value *V, std::vector<Value*> 
&GEPOps){
+static const Value *GetGEPOperands(const Value *V, 
+                                   SmallVector<Value*, 16> &GEPOps){
   assert(GEPOps.empty() && "Expect empty list to populate!");
   GEPOps.insert(GEPOps.end(), cast<User>(V)->op_begin()+1,
                 cast<User>(V)->op_end());
@@ -369,7 +371,7 @@
       // non-aliasing.
 
       // Collect all of the chained GEP operands together into one simple place
-      std::vector<Value*> GEP1Ops, GEP2Ops;
+      SmallVector<Value*, 16> GEP1Ops, GEP2Ops;
       BasePtr1 = GetGEPOperands(V1, GEP1Ops);
       BasePtr2 = GetGEPOperands(V2, GEP2Ops);
 
@@ -398,7 +400,7 @@
 
   if (V1Size != ~0U && V2Size != ~0U)
     if (isGEP(V1)) {
-      std::vector<Value*> GEPOperands;
+      SmallVector<Value*, 16> GEPOperands;
       const Value *BasePtr = GetGEPOperands(V1, GEPOperands);
 
       AliasResult R = alias(BasePtr, V1Size, V2, V2Size);



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