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* ira.c (ira): Update regstat data if we deleted insns. 

From-SVN: r232556
This commit is contained in:
Bernd Schmidt 2016-01-19 13:02:17 +00:00 committed by Bernd Schmidt
parent e47294194f
commit d20c47fc86
2 changed files with 16 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,7 @@
2016-01-19 Bernd Schmidt <bschmidt@redhat.com>
* ira.c (ira): Update regstat data if we deleted insns.
2016-01-19 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/68955
@ -13,7 +17,7 @@
assume that the node has body.
* cgraph.c (cgraph_node::get_untransformed_body): Use gimple_body_p
check.
2016-01-19 Jan Hubicka <hubicka@ucw.cz>
* lto-streamer-out.c (lto_output): Do not stream instrumentation

14
gcc/ira.c
View File

@ -5185,19 +5185,27 @@ ira (FILE *f)
setup_reg_equiv ();
setup_reg_equiv_init ();
bool update_regstat = false;
if (optimize && rebuild_p)
{
timevar_push (TV_JUMP);
rebuild_jump_labels (get_insns ());
if (purge_all_dead_edges ())
delete_unreachable_blocks ();
{
delete_unreachable_blocks ();
update_regstat = true;
}
timevar_pop (TV_JUMP);
}
allocated_reg_info_size = max_reg_num ();
if (delete_trivially_dead_insns (get_insns (), max_reg_num ()))
df_analyze ();
{
df_analyze ();
update_regstat = true;
}
/* It is not worth to do such improvement when we use a simple
allocation because of -O0 usage or because the function is too
@ -5308,7 +5316,7 @@ ira (FILE *f)
check_allocation ();
#endif
if (max_regno != max_regno_before_ira)
if (update_regstat || max_regno != max_regno_before_ira)
{
regstat_free_n_sets_and_refs ();
regstat_free_ri ();