mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-01-30 13:39:46 +08:00
Code Issues Packages Projects Releases Wiki Activity

toplev.c (rest_of_compilation): Set no_new_pseudos after flow1; instead track register_life_up_to_date.

Browse Source 
* toplev.c (rest_of_compilation): Set no_new_pseudos after flow1;
        instead track register_life_up_to_date.  Toggle no_new_pseudos
        around if_convert.

From-SVN: r34246
This commit is contained in:
Richard Henderson 2000-05-29 00:09:53 -07:00 committed by Richard Henderson
parent f192590a79
commit 7b40bc6bda
2 changed files with 23 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2000-05-29 Richard Henderson <rth@cygnus.com>
* toplev.c (rest_of_compilation): Set no_new_pseudos after flow1;
instead track register_life_up_to_date. Toggle no_new_pseudos
around if_convert.
2000-05-28 Geoff Keating <geoffk@cygnus.com>
* config/rs6000/rs6000.c (output_cbranch): Escape '%' characters

29
gcc/toplev.c
View File

@ -2614,6 +2614,7 @@ rest_of_compilation (decl)
int tem;
int failure = 0;
int rebuild_label_notes_after_reload;
int register_life_up_to_date;
timevar_push (TV_REST_OF_COMPILATION);
@ -3155,6 +3156,9 @@ rest_of_compilation (decl)
mark_constant_function ();
timevar_pop (TV_FLOW);
register_life_up_to_date = 1;
no_new_pseudos = 1;
if (warn_uninitialized || extra_warnings)
{
uninitialized_vars_warning (DECL_INITIAL (decl));
@ -3218,7 +3222,9 @@ rest_of_compilation (decl)
timevar_push (TV_IFCVT);
open_dump_file (DFI_ce, decl);
no_new_pseudos = 0;
if_convert (1);
no_new_pseudos = 1;
close_dump_file (DFI_ce, print_rtl_with_bb, insns);
timevar_pop (TV_IFCVT);
@ -3240,6 +3246,11 @@ rest_of_compilation (decl)
ggc_collect ();
}
/* Any of the several passes since flow1 will have munged register
lifetime data a bit. */
if (optimize > 0)
register_life_up_to_date = 0;
#ifdef OPTIMIZE_MODE_SWITCHING
if (optimize)
{
@ -3250,7 +3261,7 @@ rest_of_compilation (decl)
/* We did work, and so had to regenerate global life information.
Take advantage of this and don't re-recompute register life
information below. */
no_new_pseudos = 1;
register_life_up_to_date = 1;
}
timevar_pop (TV_GCSE);
@ -3277,9 +3288,9 @@ rest_of_compilation (decl)
if (ggc_p)
ggc_collect ();
/* Register lifetime information is up to date. From now on
we can not generate any new pseudos. */
no_new_pseudos = 1;
/* Register lifetime information was updated as part of verifying
the schedule. */
register_life_up_to_date = 1;
}
#endif
@ -3296,14 +3307,8 @@ rest_of_compilation (decl)
RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
jump optimizer after register allocation and reloading are finished. */
if (! no_new_pseudos)
{
recompute_reg_usage (insns, ! optimize_size);
/* Register lifetime information is up to date. From now on
we can not generate any new pseudos. */
no_new_pseudos = 1;
}
if (! register_life_up_to_date)
recompute_reg_usage (insns, ! optimize_size);
regclass (insns, max_reg_num (), rtl_dump_file);
rebuild_label_notes_after_reload = local_alloc ();