commit 13abd7e98bde4ea0e3ba1051c9920a9882045a8c
author Anders Carlsson <andersca@mac.com> Tue Nov 04 05:30:00 2008 +0000
committer Anders Carlsson <andersca@mac.com> Tue Nov 04 05:30:00 2008 +0000
tree 2e0017cb58a19dfbd00543022bc0f0ae58474503
parent 4961890c0723500bf0bf352873f6eb66ce738c9d

Implement lowering of va_arg in clang directly. (This is 32-bit X86 only for now).

llvm-svn: 58681

clang/lib/CodeGen/CGExprAgg.cpp

diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 28fb9a3..e8ab1bb 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -256,10 +256,14 @@
 
 void AggExprEmitter::VisitVAArgExpr(VAArgExpr *VE) {
   llvm::Value *ArgValue = CGF.EmitLValue(VE->getSubExpr()).getAddress();
-  llvm::Value *V = Builder.CreateVAArg(ArgValue, CGF.ConvertType(VE->getType()));
+  llvm::Value *ArgPtr = CGF.EmitVAArg(ArgValue, VE->getType());
+
+  if (!ArgPtr)
+    CGF.ErrorUnsupported(VE, "aggregate va_arg expression");
+  
   if (DestPtr)
     // FIXME: volatility
-    Builder.CreateStore(V, DestPtr);
+    CGF.EmitAggregateCopy(DestPtr, ArgPtr, VE->getType());
 }
 
 void AggExprEmitter::EmitNonConstInit(InitListExpr *E) {