Codegen global array initializers.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43383 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CodeGenModule.cpp b/CodeGen/CodeGenModule.cpp
index 8cb138e..00c2621 100644
--- a/CodeGen/CodeGenModule.cpp
+++ b/CodeGen/CodeGenModule.cpp
@@ -72,7 +72,41 @@
if (D->getInit()->isIntegerConstantExpr(Value, Context))
Init = llvm::ConstantInt::get(Value);
}
- assert(Init && "FIXME: Global variable initializers unimp!");
+
+ if (!Init) {
+ if (const InitListExpr *ILE = dyn_cast<InitListExpr>(D->getInit())) {
+
+ unsigned NumInitElements = ILE->getNumInits();
+
+ assert ( ILE->getType()->isArrayType()
+ && "FIXME: Only Array initializers are supported");
+
+ std::vector<llvm::Constant*> ArrayElts;
+ const llvm::PointerType *APType = cast<llvm::PointerType>(GV->getType());
+ const llvm::ArrayType *AType = cast<llvm::ArrayType>(APType->getElementType());
+
+ // Copy initializer elements.
+ unsigned i = 0;
+ for (i = 0; i < NumInitElements; ++i) {
+ assert (ILE->getInit(i)->getType()->isIntegerType()
+ && "Only IntegerType global array initializers are supported");
+ llvm::APSInt Value(static_cast<uint32_t>(
+ getContext().getTypeSize(ILE->getInit(i)->getType(), SourceLocation())));
+ if (ILE->getInit(i)->isIntegerConstantExpr(Value, Context)) {
+ llvm::Constant *C = llvm::ConstantInt::get(Value);
+ ArrayElts.push_back(C);
+ }
+ }
+
+ // Initialize remaining array elements.
+ unsigned NumArrayElements = AType->getNumElements();
+ for (; i < NumArrayElements; ++i)
+ ArrayElts.push_back(llvm::Constant::getNullValue(AType->getElementType()));
+
+ Init = llvm::ConstantArray::get(AType, ArrayElts);
+ } else
+ assert(Init && "FIXME: Global variable initializers unimp!");
+ }
GV->setInitializer(Init);