From 33cb1cf6c5491fe07ebbf62a8088e7dbd44b6f51 Mon Sep 17 00:00:00 2001
From: Zdenek Dvorak <dvorakz@suse.cz>
Date: Fri, 20 Jan 2006 18:06:34 +0100
Subject: [PATCH] loop-iv.c (iv_analysis_loop_init): Use df in more
conservative way.
* loop-iv.c (iv_analysis_loop_init): Use df in more conservative way.
From-SVN: r110030
---
gcc/ChangeLog | 4 ++++
gcc/loop-iv.c | 13 +++++--------
2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a59ac958ab35..35d72cf28ddd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2006-01-20 Zdenek Dvorak <dvorakz@suse.cz>
+
+ * loop-iv.c (iv_analysis_loop_init): Use df in more conservative way.
+
2006-01-20 Richard Sandiford <richard@codesourcery.com>
* stmt.c (case_bit_test_cmp): Stabilize the sort using code
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c
index e3ec78b7cfcb..0321faa58e81 100644
--- a/gcc/loop-iv.c
+++ b/gcc/loop-iv.c
@@ -250,14 +250,11 @@ iv_analysis_loop_init (struct loop *loop)
current_loop = loop;
/* Clear the information from the analysis of the previous loop. */
- if (first_time)
- {
- df = df_init (DF_HARD_REGS | DF_EQUIV_NOTES);
- df_chain_add_problem (df, DF_UD_CHAIN);
- bivs = htab_create (10, biv_hash, biv_eq, free);
- }
- else
- clear_iv_info ();
+ if (!first_time)
+ iv_analysis_done ();
+ df = df_init (DF_HARD_REGS | DF_EQUIV_NOTES);
+ df_chain_add_problem (df, DF_UD_CHAIN);
+ bivs = htab_create (10, biv_hash, biv_eq, free);
for (i = 0; i < loop->num_nodes; i++)
{
--
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