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re PR rtl-optimization/89115 (compile time and memory hog) 

2019-01-30  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/89115
	* opts.c (default_options_optimization): Reduce
	PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
	Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
	to the default.

From-SVN: r268394
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Richard Biener 2019-01-30 15:11:04 +00:00 committed by Richard Biener
parent de0c04f99c
commit 2eb8a3e56f
2 changed files with 18 additions and 1 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2019-01-30 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* opts.c (default_options_optimization): Reduce
PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
to the default.
2019-01-30 Kelvin Nilsen <kelvin@gcc.gnu.org>
* config/rs6000/rs6000-c.c (altivec-resolve_overloaded_builtin):

11
gcc/opts.c
View File

@ -670,7 +670,16 @@ default_options_optimization (struct gcc_options *opts,
/* For -O1 only do loop invariant motion for very small loops. */
maybe_set_param_value
(PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP)
: default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) / 10,
opts->x_param_values, opts_set->x_param_values);
/* For -O1 reduce the maximum number of active local stores for RTL DSE
since this can consume huge amounts of memory (PR89115). */
maybe_set_param_value
(PARAM_MAX_DSE_ACTIVE_LOCAL_STORES,
opt2 ? default_param_value (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES)
: default_param_value (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES) / 10,
opts->x_param_values, opts_set->x_param_values);
/* At -Ofast, allow store motion to introduce potential race conditions. */