diff options
Diffstat (limited to 'contrib/gcc/reg-stack.c')
| -rw-r--r-- | contrib/gcc/reg-stack.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/contrib/gcc/reg-stack.c b/contrib/gcc/reg-stack.c index 0f284ac..f10abe9 100644 --- a/contrib/gcc/reg-stack.c +++ b/contrib/gcc/reg-stack.c @@ -429,7 +429,7 @@ reg_to_stack (rtx first, FILE *file) Also need to rebuild life when superblock scheduling is done as it don't update liveness yet. */ if (!optimize - || (flag_sched2_use_superblocks + || ((flag_sched2_use_superblocks || flag_sched2_use_traces) && flag_schedule_insns_after_reload)) { count_or_remove_death_notes (NULL, 1); @@ -1231,9 +1231,9 @@ swap_rtx_condition (rtx insn) pat = PATTERN (insn); } - /* See if this is, or ends in, a fnstsw, aka unspec 9. If so, we're - not doing anything with the cc value right now. We may be able to - search for one though. */ + /* See if this is, or ends in, a fnstsw. If so, we're not doing anything + with the cc value right now. We may be able to search for one + though. */ if (GET_CODE (pat) == SET && GET_CODE (SET_SRC (pat)) == UNSPEC @@ -1252,9 +1252,13 @@ swap_rtx_condition (rtx insn) return 0; } + /* We haven't found it. */ + if (insn == BB_END (current_block)) + return 0; + /* So we've found the insn using this value. If it is anything - other than sahf, aka unspec 10, or the value does not die - (meaning we'd have to search further), then we must give up. */ + other than sahf or the value does not die (meaning we'd have + to search further), then we must give up. */ pat = PATTERN (insn); if (GET_CODE (pat) != SET || GET_CODE (SET_SRC (pat)) != UNSPEC |
