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re PR debug/43656 ("-fcompare-debug failure" with "-O2 -fschedule-insns -fsched-pressure -funroll-loops -fgraphite-identity") 

PR debug/43656
* haifa-sched.c (setup_insn_reg_pressure_info,
update_register_pressure): Reject debug insns.
(ready_sort): Don't setup reg pressure for debug insns.
(schedule_insn): Don't update reg pressure for debug insns.

From-SVN: r160761
This commit is contained in:
Alexandre Oliva 2010-06-14 19:18:04 +00:00 committed by Alexandre Oliva
parent 2465dcc257
commit c11b0b3b81
2 changed files with 15 additions and 2 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2010-06-14 Alexandre Oliva <aoliva@redhat.com>
PR debug/43656
* haifa-sched.c (setup_insn_reg_pressure_info,
update_register_pressure): Reject debug insns.
(ready_sort): Don't setup reg pressure for debug insns.
(schedule_insn): Don't update reg pressure for debug insns.
2010-06-14 Richard Guenther <rguenther@suse.de>
* lto-streamer.c (cached_bp): Remove.

9
gcc/haifa-sched.c
View File

@ -1124,6 +1124,8 @@ setup_insn_reg_pressure_info (rtx insn)
struct reg_use_data *use;
static int death[N_REG_CLASSES];
gcc_checking_assert (!DEBUG_INSN_P (insn));
excess_cost_change = 0;
for (i = 0; i < ira_reg_class_cover_size; i++)
death[ira_reg_class_cover[i]] = 0;
@ -1500,7 +1502,8 @@ ready_sort (struct ready_list *ready)
if (sched_pressure_p)
{
for (i = 0; i < ready->n_ready; i++)
setup_insn_reg_pressure_info (first[i]);
if (!DEBUG_INSN_P (first[i]))
setup_insn_reg_pressure_info (first[i]);
}
SCHED_SORT (first, ready->n_ready);
}
@ -1564,6 +1567,8 @@ update_register_pressure (rtx insn)
struct reg_use_data *use;
struct reg_set_data *set;
gcc_checking_assert (!DEBUG_INSN_P (insn));
for (use = INSN_REG_USE_LIST (insn); use != NULL; use = use->next_insn_use)
if (dying_use_p (use) && bitmap_bit_p (curr_reg_live, use->regno))
mark_regno_birth_or_death (use->regno, false);
@ -1684,7 +1689,7 @@ schedule_insn (rtx insn)
fputc ('\n', sched_dump);
}
if (sched_pressure_p)
if (sched_pressure_p && !DEBUG_INSN_P (insn))
update_reg_and_insn_max_reg_pressure (insn);
/* Scheduling instruction should have all its dependencies resolved and