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| author | Reid Kleckner <reid@kleckner.net> | 2014-03-26 15:38:33 +0000 |
|---|---|---|
| committer | Reid Kleckner <reid@kleckner.net> | 2014-03-26 15:38:33 +0000 |
| commit | 597e81dea1059c8a075f29f5fcadcb1ae58e42e3 (patch) | |
| tree | 8f062e22ab2752e2074986c5e059dc808c26763d /clang/lib/CodeGen/CGBuiltin.cpp | |
| parent | c491a8d4577052bc6b3b4c72a7db6a7cfcbc2ed0 (diff) | |
| download | bcm5719-llvm-597e81dea1059c8a075f29f5fcadcb1ae58e42e3.tar.gz bcm5719-llvm-597e81dea1059c8a075f29f5fcadcb1ae58e42e3.zip | |
-fms-extensions: Add __va_start builtin, which is used for x64
The main difference between __va_start and __builtin_va_start is that
the address of the va_list has already been taken, and the va_list is
always a char*.
__va_end and __va_arg are not needed.
llvm-svn: 204821
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index c105d80bf79..b0e63b647d8 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -215,8 +215,11 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD, return RValue::get(CGM.EmitConstantExpr(E, E->getType(), 0)); case Builtin::BI__builtin_stdarg_start: case Builtin::BI__builtin_va_start: + case Builtin::BI__va_start: case Builtin::BI__builtin_va_end: { - Value *ArgValue = EmitVAListRef(E->getArg(0)); + Value *ArgValue = (BuiltinID == Builtin::BI__va_start) + ? EmitScalarExpr(E->getArg(0)) + : EmitVAListRef(E->getArg(0)); llvm::Type *DestType = Int8PtrTy; if (ArgValue->getType() != DestType) ArgValue = Builder.CreateBitCast(ArgValue, DestType, |
