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sparc.c (sparc_option_override): If not set by the user, force flag_ira_share_save_slots to 0.

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* config/sparc/sparc.c (sparc_option_override): If not set by the user,
	force flag_ira_share_save_slots to 0.

From-SVN: r174148
This commit is contained in:
Eric Botcazou 2011-05-24 22:28:48 +00:00 • committed by Eric Botcazou
parent 5bb92e54b7
commit 24d1bbc7b5
2 changed files with 11 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2011-05-24 Eric Botcazou <ebotcazou@adacore.com>
* config/sparc/sparc.c (sparc_option_override): If not set by the user,
force flag_ira_share_save_slots to 0.
2011-05-24 Eric Botcazou <ebotcazou@adacore.com>
* var-tracking.c (compute_cfa_pointer): Adjust head comment.

6
gcc/config/sparc/sparc.c
View file

@ -933,6 +933,12 @@ sparc_option_override (void)
? 64 : 32),
global_options.x_param_values,
global_options_set.x_param_values);
/* Disable save slot sharing for call-clobbered registers by default.
The IRA sharing algorithm works on single registers only and this
pessimizes for double floating-point registers. */
if (!global_options_set.x_flag_ira_share_save_slots)
flag_ira_share_save_slots = 0;
}
/* Miscellaneous utilities. */