From 544e7e783525054b1e4831e2fc001a18b67c6cbf Mon Sep 17 00:00:00 2001
From: Steven Bosscher <steven@gcc.gnu.org>
Date: Sat, 13 Oct 2012 13:21:34 +0000
Subject: [PATCH] ira.c (ira): Set current_loops to &ira_loops before recording
loop exits.
* ira.c (ira): Set current_loops to &ira_loops before recording
loop exits. Release recorded exits and loops early.
From-SVN: r192423
---
gcc/ChangeLog | 5 +++++
gcc/ira.c | 10 ++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fa3c54d57284..804d74053d6f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-13 Steven Bosscher <steven@gcc.gnu.org>
+
+ * ira.c (ira): Set current_loops to &ira_loops before recording
+ loop exits. Release recorded exits and loops early.
+
2012-10-13 Chung-Lin Tang <cltang@codesourcery.com>
* builtins.c (expand_builtin_set_thread_pointer): Use
diff --git a/gcc/ira.c b/gcc/ira.c
index 4a7dcb52043d..9a93297b0d4b 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -4233,8 +4233,8 @@ ira (FILE *f)
if (flag_ira_region == IRA_REGION_ALL || flag_ira_region == IRA_REGION_MIXED)
{
flow_loops_find (&ira_loops);
- record_loop_exits ();
current_loops = &ira_loops;
+ record_loop_exits ();
}
if (internal_flag_ira_verbose > 0 && ira_dump_file != NULL)
@@ -4277,9 +4277,14 @@ ira (FILE *f)
info. */
df_analyze ();
+ /* ??? Rebuild the loop tree, but why? Does the loop tree
+ change if new insns were generated? Can that be handled
+ by updating the loop tree incrementally? */
+ release_recorded_exits ();
+ flow_loops_free (&ira_loops);
flow_loops_find (&ira_loops);
- record_loop_exits ();
current_loops = &ira_loops;
+ record_loop_exits ();
setup_allocno_assignment_flags ();
ira_initiate_assign ();
@@ -4363,6 +4368,7 @@ do_reload (void)
if (current_loops != NULL)
{
+ release_recorded_exits ();
flow_loops_free (&ira_loops);
free_dominance_info (CDI_DOMINATORS);
}
--
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