procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR c/56113 (out of memory when compiling a function with many goto labels (50k > ))

Browse source 
PR middle-end/56113
	* fwprop.c (fwprop_init): Set up loops without CFG modifications.

From-SVN: r195632
This commit is contained in:
Steven Bosscher 2013-01-31 20:16:07 +00:00
parent 7c81527e48
commit c5f4be845a
2 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2013-01-31 Steven Bosscher <steven@gcc.gnu.org>
PR middle-end/56113
* fwprop.c (fwprop_init): Set up loops without CFG modifications.
2013-01-31 Hiroyuki Ono <hiroyuki.ono.jc@renesas.com>
Nick Clifton <nickc@redhat.com>

8
gcc/fwprop.c
View file

@ -1404,10 +1404,10 @@ fwprop_init (void)
calculate_dominance_info (CDI_DOMINATORS);
/* We do not always want to propagate into loops, so we have to find
loops and be careful about them. But we have to call flow_loops_find
before df_analyze, because flow_loops_find may introduce new jump
insns (sadly) if we are not working in cfglayout mode. */
loop_optimizer_init (0);
loops and be careful about them. Avoid CFG modifications so that
we don't have to update dominance information afterwards for
build_single_def_use_links. */
loop_optimizer_init (AVOID_CFG_MODIFICATIONS);
build_single_def_use_links ();
df_set_flags (DF_DEFER_INSN_RESCAN);