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Switch some std::vector's to SmallVectors. This speeds up -load-vn -gcse

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by 6% on tramp3d.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34167 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-02-10 22:15:31 +00:00
parent fd1ad3b730
commit a77600e861
1 changed files with 5 additions and 3 deletions
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8
lib/Analysis/BasicAliasAnalysis.cpp
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@ -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 @@ static const User *isGEP(const Value *V) {
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 @@ BasicAliasAnalysis::alias(const Value *V1, unsigned V1Size,
// 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 @@ BasicAliasAnalysis::alias(const Value *V1, unsigned V1Size,
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);