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Avoid unnecessary memset when allocating array literals.

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This completes the merge of pull request #294. Thanks a lot to
Chris Holdsworth who originally wrote the patch!

GitHub: Fixes #294.
GitHub: Fixes #141.
This commit is contained in:
David Nadlinger 2013-05-04 21:20:09 +02:00
parent f2662c3660
commit 0a376b9c71
3 changed files with 7 additions and 2 deletions
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4
gen/arrays.cpp
View file

@ -583,7 +583,9 @@ DSliceValue* DtoNewDynArray(Loc& loc, Type* arrayType, DValue* dim, bool default
defaultInit = false;
bool zeroInit = eltType->isZeroInit();
const char* fnname = zeroInit ? "_d_newarrayT" : "_d_newarrayiT";
const char* fnname = defaultInit ?
(zeroInit ? "_d_newarrayT" : "_d_newarrayiT") :
"_d_newarrayvT";
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, fnname);
// call allocator

2
gen/passes/GarbageCollect2Stack.cpp
View file

@ -358,7 +358,7 @@ FunctionPass *createGarbageCollect2Stack() {
GarbageCollect2Stack::GarbageCollect2Stack()
: FunctionPass(ID),
AllocMemoryT(0, true, false),
NewArrayVT(0, true, false, false, 1),
NewArrayVT(0, true, true, false, 1),
NewArrayT(0, true, true, true, 1)
{
KnownFunctions["_d_allocmemoryT"] = &AllocMemoryT;

3
gen/runtime.cpp
View file

@ -342,13 +342,16 @@ static void LLVM_D_BuildRuntimeModule()
}
// void[] _d_newarrayT(TypeInfo ti, size_t length)
// void[] _d_newarrayiT(TypeInfo ti, size_t length)
// void[] _d_newarrayvT(TypeInfo ti, size_t length)
{
llvm::StringRef fname("_d_newarrayT");
llvm::StringRef fname2("_d_newarrayiT");
llvm::StringRef fname3("_d_newarrayvT");
LLType *types[] = { typeInfoTy, sizeTy };
LLFunctionType* fty = llvm::FunctionType::get(voidArrayTy, types, false);
llvm::Function::Create(fty, llvm::GlobalValue::ExternalLinkage, fname, M);
llvm::Function::Create(fty, llvm::GlobalValue::ExternalLinkage, fname2, M);
llvm::Function::Create(fty, llvm::GlobalValue::ExternalLinkage, fname3, M);
}
// void[] _d_newarraymT(TypeInfo ti, size_t length, size_t* dims)
// void[] _d_newarraymiT(TypeInfo ti, size_t length, size_t* dims)