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Also make storage for immutable array const initializers constant/unnamed_addr.

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This commit is contained in:
David Nadlinger
2013-10-09 05:32:41 +02:00
parent 47e212178e
commit 4987894468
1 changed files with 8 additions and 9 deletions
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17
gen/toir.cpp
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@@ -2945,21 +2945,20 @@ LLConstant* ArrayLiteralExp::toConstElem(IRState* p)
if (!dyn)
return initval;
// we need to put the initializer in a global, and so we have a pointer to the array
// Important: don't make the global constant, since this const initializer might
// be used as an initializer for a static T[] - where modifying contents is allowed.
LLConstant* globalstore = new LLGlobalVariable(*gIR->module,
initval->getType(), false, LLGlobalValue::InternalLinkage, initval,
bool canBeConst = type->isConst() || type->isImmutable();
llvm::GlobalVariable* gvar = new llvm::GlobalVariable(*gIR->module,
initval->getType(), canBeConst, llvm::GlobalValue::InternalLinkage, initval,
".dynarrayStorage");
globalstore = DtoBitCast(globalstore, getPtrToType(arrtype));
gvar->setUnnamedAddr(canBeConst);
llvm::Constant* store = DtoBitCast(gvar, getPtrToType(arrtype));
if (bt->ty == Tpointer)
// we need to return pointer to the static array.
return globalstore;
return store;
// build a constant dynamic array reference with the .ptr field pointing into globalstore
// build a constant dynamic array reference with the .ptr field pointing into store
LLConstant* idxs[2] = { DtoConstUint(0), DtoConstUint(0) };
LLConstant* globalstorePtr = llvm::ConstantExpr::getGetElementPtr(globalstore, idxs, true);
LLConstant* globalstorePtr = llvm::ConstantExpr::getGetElementPtr(store, idxs, true);
return DtoConstSlice(DtoConstSize_t(elements->dim), globalstorePtr);
}