diff options
| author | Dinar Temirbulatov <dinar@kugelworks.com> | 2013-05-31 23:20:17 +0000 |
|---|---|---|
| committer | Dinar Temirbulatov <dinar@gcc.gnu.org> | 2013-06-01 03:20:17 +0400 |
| commit | c359d8d046a4c0d773979c6668d34a80d9ae99a5 (patch) | |
| tree | edd8376734de32bbfe9406a6aae957335d439222 /gcc | |
| parent | dc801ca2dea2817571043270854c5c2261fb4874 (diff) | |
| download | gcc-c359d8d046a4c0d773979c6668d34a80d9ae99a5.zip gcc-c359d8d046a4c0d773979c6668d34a80d9ae99a5.tar.gz gcc-c359d8d046a4c0d773979c6668d34a80d9ae99a5.tar.bz2 | |
re PR rtl-optimization/57268 (c nested loops hang compiler in sched-deps.c)
2013-05-31 Dinar Temirbulatov <dinar@kugelworks.com>
PR rtl-optimization/57268
* sched-deps.c (sched_analyze_2): Flush dependence lists if
the sum of the read and write lists exceeds MAX_PENDING_LIST_LENGTH.
From-SVN: r199564
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/sched-deps.c | 10 |
2 files changed, 14 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0dbe13a..39f24a6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-05-31 Dinar Temirbulatov <dinar@kugelworks.com> + + PR rtl-optimization/57268 + * sched-deps.c (sched_analyze_2): Flush dependence lists if + the sum of the read and write lists exceeds MAX_PENDING_LIST_LENGTH. + 2013-05-31 Eric Botcazou <ebotcazou@adacore.com> * config/rs6000/predicates.md (rs6000_cbranch_operator): Accept some diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index c7ef1d8..190fd4e 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -2690,8 +2690,14 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx insn) /* Always add these dependencies to pending_reads, since this insn may be followed by a write. */ - if (!deps->readonly) - add_insn_mem_dependence (deps, true, insn, x); + if (!deps->readonly) + { + if ((deps->pending_read_list_length + + deps->pending_write_list_length) + > MAX_PENDING_LIST_LENGTH) + flush_pending_lists (deps, insn, true, true); + add_insn_mem_dependence (deps, true, insn, x); + } sched_analyze_2 (deps, XEXP (x, 0), insn); |