Support IRgen of va_arg of structure as l-value.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64325 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index f7bbb60..4d6c3f1 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -137,6 +137,8 @@
case Expr::CallExprClass:
case Expr::CXXOperatorCallExprClass:
return EmitCallExprLValue(cast<CallExpr>(E));
+ case Expr::VAArgExprClass:
+ return EmitVAArgExprLValue(cast<VAArgExpr>(E));
case Expr::DeclRefExprClass:
case Expr::QualifiedDeclRefExprClass:
return EmitDeclRefLValue(cast<DeclRefExpr>(E));
@@ -996,11 +998,17 @@
LValue CodeGenFunction::EmitCallExprLValue(const CallExpr *E) {
// Can only get l-value for call expression returning aggregate type
RValue RV = EmitCallExpr(E);
- // FIXME: can this be volatile?
return LValue::MakeAddr(RV.getAggregateAddr(),
E->getType().getCVRQualifiers());
}
+LValue CodeGenFunction::EmitVAArgExprLValue(const VAArgExpr *E) {
+ // FIXME: This shouldn't require another copy.
+ llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType()));
+ EmitAggExpr(E, Temp, false);
+ return LValue::MakeAddr(Temp, E->getType().getCVRQualifiers());
+}
+
LValue
CodeGenFunction::EmitCXXConditionDeclLValue(const CXXConditionDeclExpr *E) {
EmitLocalBlockVarDecl(*E->getVarDecl());