diff options
| author | hp <hp@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-11-30 07:13:21 +0000 |
|---|---|---|
| committer | hp <hp@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-11-30 07:13:21 +0000 |
| commit | 08dc6a501c685f2e961fae92388bc449ad097e86 (patch) | |
| tree | c95150123040569bbd8625a0a8b356c4adf056b9 /gcc/reorg.c | |
| parent | fcb50449d48208da75e9f7b473341f484816f523 (diff) | |
| download | gcc-08dc6a501c685f2e961fae92388bc449ad097e86.tar.gz | |
PR rtl-optimization/40086
* reorg.c (relax_delay_slots): When looking for redundant insn at
the branch target, use next_real_insn, not next_active_insn.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@154751 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/reorg.c')
| -rw-r--r-- | gcc/reorg.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/reorg.c b/gcc/reorg.c index 4871b0e8c29..b1de4bec60f 100644 --- a/gcc/reorg.c +++ b/gcc/reorg.c @@ -3506,8 +3506,11 @@ relax_delay_slots (rtx first) } /* If the first insn at TARGET_LABEL is redundant with a previous - insn, redirect the jump to the following insn process again. */ - trial = next_active_insn (target_label); + insn, redirect the jump to the following insn and process again. + We use next_real_insn instead of next_active_insn so we + don't skip USE-markers, or we'll end up with incorrect + liveness info. */ + trial = next_real_insn (target_label); if (trial && GET_CODE (PATTERN (trial)) != SEQUENCE && redundant_insn (trial, insn, 0) && ! can_throw_internal (trial)) |