On Mon, Aug 1, 2011 at 6:51 AM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Mon, Aug 1, 2011 at 6:38 AM, H.J. Lu <hjl.to...@gmail.com> wrote: >> On Thu, May 26, 2011 at 9:56 AM, Julian Brown <jul...@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 >> > > I am testing this patch. > > -- > H.J. > --- > diff --git a/gcc/calls.c b/gcc/calls.c > index 7ad30b4..c4f8b46 100644 > --- a/gcc/calls.c > +++ b/gcc/calls.c > @@ -3829,7 +3829,9 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx > val > ue, > rtx val = argvec[argnum].value; > rtx reg = argvec[argnum].reg; > int partial = argvec[argnum].partial; > +#ifdef BLOCK_REG_PADDING > int size = 0; > +#endif > > /* Handle calls that pass values in multiple non-contiguous > locations. The PA64 has examples of this for library calls. */ >
I checked it in as an obvious fix. -- H.J.
