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| author | David Malcolm <dmalcolm@redhat.com> | 2014-09-05 15:03:12 +0000 |
|---|---|---|
| committer | David Malcolm <dmalcolm@gcc.gnu.org> | 2014-09-05 15:03:12 +0000 |
| commit | 45700b6a428bafde0fae9b67dd494f3cac3d9bf0 (patch) | |
| tree | 78e89d9c20913bed55767228b2eb82d0c97720b6 /gcc/reorg.c | |
| parent | 96b7041496d08ec15ac4eec2632738023cfc7452 (diff) | |
| download | gcc-45700b6a428bafde0fae9b67dd494f3cac3d9bf0.zip gcc-45700b6a428bafde0fae9b67dd494f3cac3d9bf0.tar.gz gcc-45700b6a428bafde0fae9b67dd494f3cac3d9bf0.tar.bz2 | |
Simplification within reorg.c
gcc/ChangeLog:
2014-09-05 David Malcolm <dmalcolm@redhat.com>
* reorg.c (relax_delay_slots): Move declaration of "trial_seq"
above the conditional, and convert the check on GET_CODE to a
dyn_cast, so that "trial_seq" is available as an rtx_sequence * in
the conditional. Simplify the conditional by using methods of
"trial_seq".
From-SVN: r214969
Diffstat (limited to 'gcc/reorg.c')
| -rw-r--r-- | gcc/reorg.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gcc/reorg.c b/gcc/reorg.c index 89d500d..7bacc6d 100644 --- a/gcc/reorg.c +++ b/gcc/reorg.c @@ -3385,13 +3385,14 @@ relax_delay_slots (rtx_insn *first) /* Similarly, if it is an unconditional jump with one insn in its delay list and that insn is redundant, thread the jump. */ - if (trial && GET_CODE (PATTERN (trial)) == SEQUENCE - && XVECLEN (PATTERN (trial), 0) == 2 - && JUMP_P (XVECEXP (PATTERN (trial), 0, 0)) - && simplejump_or_return_p (XVECEXP (PATTERN (trial), 0, 0)) - && redundant_insn (XVECEXP (PATTERN (trial), 0, 1), insn, 0)) + rtx_sequence *trial_seq = + trial ? dyn_cast <rtx_sequence *> (PATTERN (trial)) : NULL; + if (trial_seq + && trial_seq->len () == 2 + && JUMP_P (trial_seq->insn (0)) + && simplejump_or_return_p (trial_seq->insn (0)) + && redundant_insn (trial_seq->insn (1), insn, 0)) { - rtx_sequence *trial_seq = as_a <rtx_sequence *> (PATTERN (trial)); target_label = JUMP_LABEL (trial_seq->insn (0)); if (ANY_RETURN_P (target_label)) target_label = find_end_label (target_label); |