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Preallocate vector, avoid unnecessary vector growth.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109971 91177308-0d34-0410-b5e6-96231b3b80d8
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Benjamin Kramer
2010-08-01 11:43:26 +00:00
parent 57dba1cf53
commit ad2b04c07f
1 changed files with 1 additions and 0 deletions
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lib/VMCore/Constants.cpp
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@ -526,6 +526,7 @@ Constant* ConstantArray::get(const ArrayType* T, Constant* const* Vals,
Constant* ConstantArray::get(LLVMContext &Context, StringRef Str, Constant* ConstantArray::get(LLVMContext &Context, StringRef Str,
bool AddNull) { bool AddNull) {
std::vector<Constant*> ElementVals; std::vector<Constant*> ElementVals;
ElementVals.reserve(Str.size() + size_t(AddNull));
for (unsigned i = 0; i < Str.size(); ++i) for (unsigned i = 0; i < Str.size(); ++i)
ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), Str[i])); ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), Str[i]));