mirrors/ldc
1
0
Fork 0
mirror of https://github.com/ldc-developers/ldc.git synced 2025-04-29 14:40:40 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add pragma(LDC_extern_weak) for symbols with (ELF-style) weak linkage.

Browse source 
For now, this is only an internal feature to be used in the
implementation of rt.sections_linux.
This commit is contained in:
David Nadlinger 2014-07-10 00:01:55 +02:00
parent 36e9465b7a
commit fc7acc48fc
7 changed files with 78 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

11
gen/llvmhelpers.cpp
View file

@ -1055,12 +1055,17 @@ void DtoResolveVariable(VarDeclaration* vd)
// vd->ir.irGlobal->value!), and in case we also do an initializer
// with a different type later, swap it out and replace any existing
// uses with bitcasts to the previous type.
//
// We always start out with external linkage; any other type is set
// when actually defining it in VarDeclaration::codegen.
llvm::GlobalValue::LinkageTypes linkage = llvm::GlobalValue::ExternalLinkage;
if (vd->llvmInternal == LLVMextern_weak) {
linkage = llvm::GlobalValue::ExternalWeakLinkage;
}
llvm::GlobalVariable* gvar = getOrCreateGlobal(vd->loc, *gIR->module,
i1ToI8(DtoType(vd->type)), isLLConst, llvm::GlobalValue::ExternalLinkage,
0, llName, vd->isThreadlocal());
i1ToI8(DtoType(vd->type)), isLLConst, linkage, 0, llName,
vd->isThreadlocal());
vd->ir.irGlobal->value = gvar;
// Set the alignment (it is important not to use type->alignsize because