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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
ir/irclass.cpp
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@@ -56,7 +56,7 @@ LLGlobalVariable * IrAggr::getVtblSymbol()
LLType* vtblTy = stripModifiers(type)->irtype->isClass()->getVtbl();
vtbl = new llvm::GlobalVariable(
vtbl = getOrCreateGlobal(aggrdecl->loc,
*gIR->module, vtblTy, true, _linkage, NULL, initname);
return vtbl;
@@ -86,7 +86,7 @@ LLGlobalVariable * IrAggr::getClassInfoSymbol()
assert(tc && "invalid ClassInfo type");
// classinfos cannot be constants since they're used as locks for synchronized
classInfo = new llvm::GlobalVariable(
classInfo = getOrCreateGlobal(aggrdecl->loc,
*gIR->module, tc->getMemoryLLType(), false, _linkage, NULL, initname);
// Generate some metadata on this ClassInfo if it's for a class.
@@ -138,7 +138,7 @@ LLGlobalVariable * IrAggr::getInterfaceArraySymbol()
name.append("16__interfaceInfosZ");
llvm::GlobalValue::LinkageTypes _linkage = DtoExternalLinkage(aggrdecl);
classInterfacesArray = new llvm::GlobalVariable(*gIR->module,
classInterfacesArray = getOrCreateGlobal(cd->loc, *gIR->module,
array_type, true, _linkage, NULL, name);
return classInterfacesArray;
@@ -335,7 +335,7 @@ llvm::GlobalVariable * IrAggr::getInterfaceVtbl(BaseClass * b, bool new_instance
mangle.append(b->base->mangle());
mangle.append("6__vtblZ");
llvm::GlobalVariable* GV = new llvm::GlobalVariable(
llvm::GlobalVariable* GV = getOrCreateGlobal(cd->loc,
*gIR->module,
vtbl_constant->getType(),
true,