On Sat, Mar 19, 2011 at 3:15 PM, James Orr <[email protected]> wrote:
> Add support for built in 16bit byte swap.
Why?
-Eli
> -James
>
> Index: include/clang/Basic/Builtins.def
> ===================================================================
> --- include/clang/Basic/Builtins.def (revision 127948)
> +++ include/clang/Basic/Builtins.def (working copy)
> @@ -380,6 +380,7 @@
>
> // FIXME: These type signatures are not correct for targets with int !=
> 32-bits
> // or with ULL != 64-bits.
> +BUILTIN(__builtin_bswap16, "UsUs", "nc")
> BUILTIN(__builtin_bswap32, "UiUi", "nc")
> BUILTIN(__builtin_bswap64, "ULLiULLi", "nc")
>
> Index: lib/CodeGen/CGBuiltin.cpp
> ===================================================================
> --- lib/CodeGen/CGBuiltin.cpp (revision 127948)
> +++ lib/CodeGen/CGBuiltin.cpp (working copy)
> @@ -316,6 +316,7 @@
> (void)EmitScalarExpr(E->getArg(1));
> return RValue::get(EmitScalarExpr(E->getArg(0)));
> }
> + case Builtin::BI__builtin_bswap16:
> case Builtin::BI__builtin_bswap32:
> case Builtin::BI__builtin_bswap64: {
> Value *ArgValue = EmitScalarExpr(E->getArg(0));
>
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