From: Eli Friedman <eli.friedman@gmail.com>
Date: Tue, 20 May 2008 07:56:31 +0000 (+0000)
Subject: Implement codegen for comma operator for structs.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=07fa52ab33a75d7a5736ea5bd0d4e3134fb10c7e;p=clang

Implement codegen for comma operator for structs.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51304 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index c7c250ee7b..2ac473439e 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -82,6 +82,7 @@ public:
   void VisitBinaryOperator(const BinaryOperator *BO);
   void VisitBinAssign(const BinaryOperator *E);
   void VisitOverloadExpr(const OverloadExpr *E);
+  void VisitBinComma(const BinaryOperator *E);
 
   
   void VisitConditionalOperator(const ConditionalOperator *CO);
@@ -213,6 +214,12 @@ void AggExprEmitter::VisitOverloadExpr(const OverloadExpr *E)
   EmitAggregateCopy(DestPtr, RV.getAggregateAddr(), E->getType());
 }
 
+void AggExprEmitter::VisitBinComma(const BinaryOperator *E)
+{
+  CGF.EmitAnyExpr(E->getLHS());
+  CGF.EmitAggExpr(E->getRHS(), DestPtr, false);
+}
+
 void AggExprEmitter::VisitStmtExpr(const StmtExpr *E) {
   CGF.EmitCompoundStmt(*E->getSubStmt(), true, DestPtr, VolatileDest);
 }
diff --git a/test/CodeGen/struct-comma.c b/test/CodeGen/struct-comma.c
new file mode 100644
index 0000000000..e8070dd178
--- /dev/null
+++ b/test/CodeGen/struct-comma.c
@@ -0,0 +1,4 @@
+// RUN: clang %s -emit-llvm
+
+struct S {int a, b;} x;
+void a(struct S* b) {*b = (r(), x);}