Introduce a new expression node, ImplicitValueInitExpr, that
represents an implicit value-initialization of a subobject of a
particular type. This replaces the (ab)use of CXXZeroValueInitExpr
within initializer lists for the "holes" that occur due to the use of
C99 designated initializers.
The new test case is currently XFAIL'd, because CodeGen's
ConstExprEmitter (in lib/CodeGen/CGExprConstant.cpp) needs to be
taught to value-initialize when it sees ImplicitValueInitExprs.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63317 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index b487bac..f985763 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -339,10 +339,10 @@
void AggExprEmitter::EmitInitializationToLValue(Expr* E, LValue LV) {
// FIXME: Are initializers affected by volatile?
- if (E->getType()->isComplexType()) {
- CGF.EmitComplexExprIntoAddr(E, LV.getAddress(), false);
- } else if (isa<CXXZeroInitValueExpr>(E)) {
+ if (isa<ImplicitValueInitExpr>(E)) {
EmitNullInitializationToLValue(LV, E->getType());
+ } else if (E->getType()->isComplexType()) {
+ CGF.EmitComplexExprIntoAddr(E, LV.getAddress(), false);
} else if (CGF.hasAggregateLLVMType(E->getType())) {
CGF.EmitAnyExpr(E, LV.getAddress(), false);
} else {