From 5b5c9ef865607e179413462dcd71bcebb5b7daae Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Wed, 11 Feb 2009 20:59:32 +0000 Subject: 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 --- lib/CodeGen/CGExpr.cpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/CGExpr.cpp') diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp index f7bbb606a7..4d6c3f1c28 100644 --- a/lib/CodeGen/CGExpr.cpp +++ b/lib/CodeGen/CGExpr.cpp @@ -137,6 +137,8 @@ LValue CodeGenFunction::EmitLValue(const Expr *E) { case Expr::CallExprClass: case Expr::CXXOperatorCallExprClass: return EmitCallExprLValue(cast(E)); + case Expr::VAArgExprClass: + return EmitVAArgExprLValue(cast(E)); case Expr::DeclRefExprClass: case Expr::QualifiedDeclRefExprClass: return EmitDeclRefLValue(cast(E)); @@ -996,11 +998,17 @@ LValue CodeGenFunction::EmitBinaryOperatorLValue(const BinaryOperator *E) { 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()); -- cgit v1.2.3-70-g09d2