diff options
Diffstat (limited to 'CodeGen')
| -rw-r--r-- | CodeGen/CGBuiltin.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/CodeGen/CGBuiltin.cpp b/CodeGen/CGBuiltin.cpp index 661c09d7cd..83c5e60475 100644 --- a/CodeGen/CGBuiltin.cpp +++ b/CodeGen/CGBuiltin.cpp @@ -125,6 +125,25 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) { Intrinsic::vastart : Intrinsic::vaend; return RValue::get(Builder.CreateCall(CGM.getIntrinsic(inst), ArgValue)); } + case Builtin::BI__builtin_va_copy: { + // FIXME: This does not yet handle architectures where va_list is a struct. + Value *DstPtr = EmitScalarExpr(E->getArg(0)); + Value *SrcValue = EmitScalarExpr(E->getArg(1)); + + Value *SrcPtr = CreateTempAlloca(SrcValue->getType(), "dst_ptr"); + + // FIXME: Volatile + Builder.CreateStore(SrcValue, SrcPtr, false); + + const llvm::Type *Type = + llvm::PointerType::getUnqual(llvm::Type::Int8Ty); + + DstPtr = Builder.CreateBitCast(DstPtr, Type); + SrcPtr = Builder.CreateBitCast(SrcPtr, Type); + Value *Args[] = { DstPtr, SrcPtr }; + return RValue::get(Builder.CreateCall(CGM.getIntrinsic(Intrinsic::vacopy), + &Args[0], &Args[2])); + } case Builtin::BI__builtin_classify_type: { APSInt Result(32); if (!E->isBuiltinClassifyType(Result)) |