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Allow multiple declarations to share the same mangled name/LLVM global.

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This is necessary to enable aliasing compiler-generated
symbols with pragma(mangle, …).

Note that globals for internal use are still directly
created.
This commit is contained in:
David Nadlinger
2013-06-16 00:12:02 +02:00
parent 0305d3bce2
commit acd508945a
9 changed files with 63 additions and 34 deletions
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8
gen/module.cpp
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@@ -178,8 +178,9 @@ static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo)
std::string thismrefname = "_D";
thismrefname += gIR->dmodule->mangle();
thismrefname += "11__moduleRefZ";
LLGlobalVariable* thismref = new LLGlobalVariable(*gIR->module, modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname);
LLGlobalVariable* thismref = getOrCreateGlobal(Loc(), *gIR->module,
modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit,
thismrefname);
// make sure _Dmodule_ref is declared
LLConstant* mref = gIR->module->getNamedGlobal("_Dmodule_ref");
LLType *modulerefPtrTy = getPtrToType(modulerefTy);
@@ -341,7 +342,8 @@ llvm::GlobalVariable* Module::moduleInfoSymbol()
// declare global
// flags will be modified at runtime so can't make it constant
moduleInfoVar = new llvm::GlobalVariable(*gIR->module, moduleInfoType, false, llvm::GlobalValue::ExternalLinkage, NULL, MIname);
moduleInfoVar = getOrCreateGlobal(loc, *gIR->module, moduleInfoType,
false, llvm::GlobalValue::ExternalLinkage, NULL, MIname);
return moduleInfoVar;
}