[CodeGen] IncompleteArray Support
Added code to support ArrayType that is not ConstantArray.
https://reviews.llvm.org/D49952
rdar://42476155
llvm-svn: 339207
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
index 6876647..651b05a 100644
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -1968,6 +1968,16 @@
Elts.push_back(C);
}
+ // This means that the array type is probably "IncompleteType" or some
+ // type that is not ConstantArray.
+ if (CAT == nullptr && CommonElementType == nullptr && !NumInitElts) {
+ const ArrayType *AT = CGM.getContext().getAsArrayType(DestType);
+ CommonElementType = CGM.getTypes().ConvertType(AT->getElementType());
+ llvm::ArrayType *AType = llvm::ArrayType::get(CommonElementType,
+ NumElements);
+ return llvm::ConstantAggregateZero::get(AType);
+ }
+
return EmitArrayConstant(CGM, CAT, CommonElementType, NumElements, Elts,
Filler);
}