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| author | Steven Bosscher <steven@gcc.gnu.org> | 2013-04-17 23:05:59 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2013-04-17 23:05:59 +0000 |
| commit | 6873ecabc23c8daa67b0aa91f364e010c9a20f6f (patch) | |
| tree | 1ddf5fc33caa30e266a0ca4b1ed9eb24854c011c /gcc/lower-subreg.c | |
| parent | bb52b0b918e2b357f195485db93943f7b212f423 (diff) | |
| download | gcc-6873ecabc23c8daa67b0aa91f364e010c9a20f6f.zip gcc-6873ecabc23c8daa67b0aa91f364e010c9a20f6f.tar.gz gcc-6873ecabc23c8daa67b0aa91f364e010c9a20f6f.tar.bz2 | |
lower-subreg.c (resolve_simple_move): If called self-recursive...
* lower-subreg.c (resolve_simple_move): If called self-recursive,
do not delete_insn insns that have not yet been emitted, only
unlink them with remove_insn.
* df-scan.c (df_insn_delete): Revert r197492.
From-SVN: r198042
Diffstat (limited to 'gcc/lower-subreg.c')
| -rw-r--r-- | gcc/lower-subreg.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/lower-subreg.c b/gcc/lower-subreg.c index 5b5b03f..eb22d8c 100644 --- a/gcc/lower-subreg.c +++ b/gcc/lower-subreg.c @@ -1069,7 +1069,13 @@ resolve_simple_move (rtx set, rtx insn) emit_insn_before (insns, insn); - delete_insn (insn); + /* If we get here via self-recutsion, then INSN is not yet in the insns + chain and delete_insn will fail. We only want to remove INSN from the + current sequence. See PR56738. */ + if (in_sequence_p ()) + remove_insn (insn); + else + delete_insn (insn); return insns; } |