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ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was done. 

2010-12-06  Vladimir Makarov  <vmakarov@redhat.com>

	* ira.c (update_equiv_regs): Prohibit move insns if
	pressure-sensitive scheduling was done.

From-SVN: r167519
This commit is contained in:
Vladimir Makarov 2010-12-06 22:11:46 +00:00 committed by Vladimir Makarov
parent 69a9720167
commit 0cad482785
2 changed files with 12 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-12-06 Vladimir Makarov <vmakarov@redhat.com>
* ira.c (update_equiv_regs): Prohibit move insns if
pressure-sensitive scheduling was done.
2010-12-06 Nicola Pero <nicola.pero@meta-innovation.com>
* c-parser.c (c_parser_for_statement): Use c_fully_fold() instead

8
gcc/ira.c
View File

@ -2585,7 +2585,13 @@ update_equiv_regs (void)
rtx equiv_insn;
if (! reg_equiv[regno].replace
|| reg_equiv[regno].loop_depth < loop_depth)
|| reg_equiv[regno].loop_depth < loop_depth
/* There is no sense to move insns if we did
register pressure-sensitive scheduling was
done because it will not improve allocation
but worsen insn schedule with a big
probability. */
|| (flag_sched_pressure && flag_schedule_insns))
continue;
/* reg_equiv[REGNO].replace gets set only when