Re: [PATCH] ARM fixed-point support [5.5/6]: argument & return padding for libcalls

["H.J. Lu" <hjl.tools@gmail.com>]

On Thu, May 26, 2011 at 9:56 AM, Julian Brown <julian@codesourcery.com> wrote:
> This patch allows padding to be specified per-target for libcalls. This
> hasn't been traditionally important, because libcalls haven't accepted
> quantities which might need padding, but that's no longer true with the
> new(-ish) fixed-point support helper functions.
>
> Tested (alongside other fixed-point support patches) with cross to ARM
> EABI in both big & little-endian mode (the target-specific part is to
> avoid a behaviour change for half-float types on ARM). OK to apply?
>
> Thanks,
>
> Julian
>
> ChangeLog
>
>    gcc/
>    * calls.c (emit_library_call_value_1): Support padding for libcall
>    arguments and return values.
>    * config/arm/arm.c (arm_pad_arg_upward): Pad half-float values
>    downwards in big-endian mode.

This breaks bootstrap on Linux/x86:

http://gcc.gnu.org/ml/gcc-regression/2011-08/msg00007.html

../../src-trunk/gcc/calls.c: In function 'rtx_def*
emit_library_call_value_1(int, rtx, rtx, libcall_type, machine_mode,
int, __va_list_tag*)':
../../src-trunk/gcc/calls.c:3832:11: error: unused variable 'size'
[-Werror=unused-variable]
cc1plus: all warnings being treated as errors

make[6]: *** [calls.o] Error 1

-- 
H.J.