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| author | Anders Carlsson <andersca@mac.com> | 2008-11-04 05:30:00 +0000 |
|---|---|---|
| committer | Anders Carlsson <andersca@mac.com> | 2008-11-04 05:30:00 +0000 |
| commit | ddf7cac45d85b73127adbbd91a2b28fc7291c57e (patch) | |
| tree | a4e61dee55c101168d9afd23227c00bc9aa45a44 /lib/CodeGen/CGExprScalar.cpp | |
| parent | d9641f8dad2eb11ad5f035a41f88c4259b80cd90 (diff) | |
Implement lowering of va_arg in clang directly. (This is 32-bit X86 only for now).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58681 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGExprScalar.cpp')
| -rw-r--r-- | lib/CodeGen/CGExprScalar.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp index 487cfcc57b..a4c65c087f 100644 --- a/lib/CodeGen/CGExprScalar.cpp +++ b/lib/CodeGen/CGExprScalar.cpp @@ -1149,8 +1149,14 @@ Value *ScalarExprEmitter::VisitOverloadExpr(OverloadExpr *E) { Value *ScalarExprEmitter::VisitVAArgExpr(VAArgExpr *VE) { llvm::Value *ArgValue = EmitLValue(VE->getSubExpr()).getAddress(); - llvm::Value *V = Builder.CreateVAArg(ArgValue, ConvertType(VE->getType())); - return V; + llvm::Value *ArgPtr = CGF.EmitVAArg(ArgValue, VE->getType()); + + // If EmitVAArg fails, we fall back to the LLVM instruction. + if (!ArgPtr) + return Builder.CreateVAArg(ArgValue, ConvertType(VE->getType())); + + // FIXME: volatile? + return Builder.CreateLoad(ArgPtr); } Value *ScalarExprEmitter::VisitObjCEncodeExpr(const ObjCEncodeExpr *E) { |