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Reserve space in these vectors to prevent having to grow the array too

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much. This gets us an addition 0.9% on 445.gobmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149952 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2012-02-07 01:27:51 +00:00
parent eb446511ce
commit a7a3f04eb9
2 changed files with 8 additions and 6 deletions
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7
lib/VMCore/Constants.cpp
View File

@ -784,9 +784,10 @@ Constant *ConstantArray::get(ArrayType *Ty, ArrayRef<Constant*> V) {
StructType *ConstantStruct::getTypeForElements(LLVMContext &Context,
ArrayRef<Constant*> V,
bool Packed) {
SmallVector<Type*, 16> EltTypes;
for (unsigned i = 0, e = V.size(); i != e; ++i)
EltTypes.push_back(V[i]->getType());
unsigned VecSize = V.size();
SmallVector<Type*, 16> EltTypes(VecSize);
for (unsigned i = 0; i != VecSize; ++i)
EltTypes[i] = V[i]->getType();
return StructType::get(Context, EltTypes, Packed);
}

7
lib/VMCore/Type.cpp
View File

@ -440,11 +440,12 @@ bool FunctionType::isValidArgumentType(Type *ArgTy) {
StructType *StructType::get(LLVMContext &Context, ArrayRef<Type*> ETypes,
bool isPacked) {
// FIXME: std::vector is horribly inefficient for this probe.
std::vector<Type*> Key;
for (unsigned i = 0, e = ETypes.size(); i != e; ++i) {
unsigned ETypesSize = ETypes.size();
std::vector<Type*> Key(ETypesSize);
for (unsigned i = 0, e = ETypesSize; i != e; ++i) {
assert(isValidElementType(ETypes[i]) &&
"Invalid type for structure element!");
Key.push_back(ETypes[i]);
Key[i] = ETypes[i];
}
if (isPacked)
Key.push_back(0);