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Re: ifcvt RTL sharing patch updated


> On Fri, 28 Nov 2003, Jan Hubicka wrote:
> > 2003-11-09  Jan Hubicka  <jh@suse.cz>
> > 	* emit-rtl.c (set_used_flags): New.
> > 	(verify_rtx_sharing, verify_rtl_sharing): New.
> > 	(unshare_all_rtl_1): Rename to....
> > 	(unshare_all_rtl_in_chain): ... this one; make static.
> > 	(copy_rtx_if_shared): LABEL_REF chan be shared.
> > 	* ifcvt.c (unshare_ifcvt_sequence): New.
> > 	(noce_try_move, noce_try_store_flag, noce_try_store_flag_constants,
> > 	noce_try_addcc, noce_try_addcc, noce_try_store_flag_mask,
> > 	noce_try_cmove, noce_try_store_flag_mask, noce_try_minmax,
> > 	noce_try_abs, noce_process_if_block, find_cond_trap
> > 	* rtl.h (verify_rtl_sharing, set_used_flags, unshare_all_rtl_in_chain):
> > 	Declare.
> > 	* toplev.c (rest_of_compilation): Check for RTL sharing.
> 
> By any chance, does this fix optimization/12280, and/or obsolete Roger's
> patch for rtl sharing in noce_emit_cmove?
> 
> http://gcc.gnu.org/ml/gcc-patches/2003-11/msg00547.html
Yes, it is meant to fix that. (and some other testcases on x86-64 that
seems to be about the worst target from this point of view)

Honza
> 
> Jeff


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