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| author | Vladimir Yanovsky <yanov@il.ibm.com> | 2007-07-28 21:51:53 +0000 |
|---|---|---|
| committer | Revital Eres <revitale@gcc.gnu.org> | 2007-07-28 21:51:53 +0000 |
| commit | 9b6dd300181991dc03186c3534062afbf9058824 (patch) | |
| tree | fbc2601e3989219775a9593d107a28e213728ed3 /gcc/modulo-sched.c | |
| parent | 6d023ec55bfca23f4fa692b1650e3ddeecf73cc1 (diff) | |
| download | gcc-9b6dd300181991dc03186c3534062afbf9058824.tar.gz | |
Avoid SMS when the candidate loop contains INC instruction
Co-Authored-By: Revital Eres <eres@il.ibm.com>
From-SVN: r127027
Diffstat (limited to 'gcc/modulo-sched.c')
| -rw-r--r-- | gcc/modulo-sched.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/modulo-sched.c b/gcc/modulo-sched.c index d543e6bdaf0..16cd5d88e24 100644 --- a/gcc/modulo-sched.c +++ b/gcc/modulo-sched.c @@ -987,12 +987,16 @@ sms_schedule (void) if ( !(count_reg = doloop_register_get (tail))) continue; - /* Don't handle BBs with calls or barriers, or !single_set insns. */ + /* Don't handle BBs with calls or barriers, or !single_set insns, + or auto-increment insns (to avoid creating invalid reg-moves + for the auto-increment insns). + ??? Should handle auto-increment insns. */ for (insn = head; insn != NEXT_INSN (tail); insn = NEXT_INSN (insn)) if (CALL_P (insn) || BARRIER_P (insn) || (INSN_P (insn) && !JUMP_P (insn) - && !single_set (insn) && GET_CODE (PATTERN (insn)) != USE)) + && !single_set (insn) && GET_CODE (PATTERN (insn)) != USE) + || (FIND_REG_INC_NOTE (insn, NULL_RTX) != 0)) break; if (insn != NEXT_INSN (tail)) @@ -1003,6 +1007,8 @@ sms_schedule (void) fprintf (dump_file, "SMS loop-with-call\n"); else if (BARRIER_P (insn)) fprintf (dump_file, "SMS loop-with-barrier\n"); + else if (FIND_REG_INC_NOTE (insn, NULL_RTX) != 0) + fprintf (dump_file, "SMS reg inc\n"); else fprintf (dump_file, "SMS loop-with-not-single-set\n"); print_rtl_single (dump_file, insn); |