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final.c (compute_alignments): Do not apply loop alignment to a block falling through to the exit.

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* final.c (compute_alignments): Do not apply loop alignment to a block
	falling through to the exit.

From-SVN: r209451
This commit is contained in:
Eric Botcazou 2014-04-16 23:31:30 +00:00 committed by Eric Botcazou
parent d2dfaca3b8
commit 82b9c0158b
2 changed files with 7 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-04-16 Eric Botcazou <ebotcazou@adacore.com>
* final.c (compute_alignments): Do not apply loop alignment to a block
falling through to the exit.
2014-04-16 Catherine Moore <clm@codesourcery.com>
* mips.md (*mov<mode>_internal, *movhi_internal, *movqi_internal):

2
gcc/final.c
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@ -775,6 +775,8 @@ compute_alignments (void)
/* In case block is frequent and reached mostly by non-fallthru edge,
align it. It is most likely a first block of loop. */
if (has_fallthru
&& !(single_succ_p (bb)
&& single_succ (bb) == EXIT_BLOCK_PTR_FOR_FN (cfun))
&& optimize_bb_for_speed_p (bb)
&& branch_frequency + fallthru_frequency > freq_threshold
&& (branch_frequency