diff options
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index f6a011a..fe22103 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -515,6 +515,15 @@ try_forward_edges (mode, b) if (GET_CODE (insn) == NOTE) break; + + /* Do not clean up branches to just past the end of a loop + at this time; it can mess up the loop optimizer's + recognition of some patterns. */ + + insn = PREV_INSN (target->head); + if (insn && GET_CODE (insn) == NOTE + && NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_END) + break; } counter++; |