From fed6152d2e50b30d08c3fb4b246f027b3baa00d6 Mon Sep 17 00:00:00 2001
From: Steven Bosscher <stevenb.gcc@gmail.com>
Date: Mon, 9 Jun 2008 01:56:08 +0000
Subject: [PATCH] df-scan.c (struct df_scan_problem_data): Remove the
mw_link_pool alloc pool.
2008-06-08 Steven Bosscher <stevenb.gcc@gmail.com>
* df-scan.c (struct df_scan_problem_data): Remove the
mw_link_pool alloc pool.
(df_scan_free_internal): Don't free it.
(df_scan_alloc): Don't allocate it.
* df.h (struct df_link): Update comment.
From-SVN: r136576
---
gcc/ChangeLog | 8 ++++++++
gcc/df-scan.c | 5 -----
gcc/df.h | 5 ++---
3 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1892d25562ac..bbc057f3110f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2008-06-08 Steven Bosscher <stevenb.gcc@gmail.com>
+
+ * df-scan.c (struct df_scan_problem_data): Remove the
+ mw_link_pool alloc pool.
+ (df_scan_free_internal): Don't free it.
+ (df_scan_alloc): Don't allocate it.
+ * df.h (struct df_link): Update comment.
+
2008-06-08 Nathan Sidwell <nathan@codesourcery.com>
* except.h: Correct checks for when SJLJ exceptions must be used.
diff --git a/gcc/df-scan.c b/gcc/df-scan.c
index 962c17a816d9..6a34bf77300a 100644
--- a/gcc/df-scan.c
+++ b/gcc/df-scan.c
@@ -166,7 +166,6 @@ struct df_scan_problem_data
alloc_pool insn_pool;
alloc_pool reg_pool;
alloc_pool mw_reg_pool;
- alloc_pool mw_link_pool;
bitmap_obstack reg_bitmaps;
bitmap_obstack insn_bitmaps;
};
@@ -221,7 +220,6 @@ df_scan_free_internal (void)
free_alloc_pool (problem_data->insn_pool);
free_alloc_pool (problem_data->reg_pool);
free_alloc_pool (problem_data->mw_reg_pool);
- free_alloc_pool (problem_data->mw_link_pool);
bitmap_obstack_release (&problem_data->reg_bitmaps);
bitmap_obstack_release (&problem_data->insn_bitmaps);
free (df_scan->problem_data);
@@ -312,9 +310,6 @@ df_scan_alloc (bitmap all_blocks ATTRIBUTE_UNUSED)
problem_data->mw_reg_pool
= create_alloc_pool ("df_scan_mw_reg pool",
sizeof (struct df_mw_hardreg), block_size);
- problem_data->mw_link_pool
- = create_alloc_pool ("df_scan_mw_link pool",
- sizeof (struct df_link), block_size);
bitmap_obstack_initialize (&problem_data->reg_bitmaps);
bitmap_obstack_initialize (&problem_data->insn_bitmaps);
diff --git a/gcc/df.h b/gcc/df.h
index 6375a70fd291..bd4d7ff7aca7 100644
--- a/gcc/df.h
+++ b/gcc/df.h
@@ -409,9 +409,8 @@ struct df_ref_extract
enum machine_mode mode;
};
-/* These links are used for two purposes:
- 1) def-use or use-def chains.
- 2) Multiword hard registers that underly a single hardware register. */
+/* These links are used for ref-ref chains. Currently only DEF-USE and
+ USE-DEF chains can be built by DF. */
struct df_link
{
struct df_ref *ref;
--
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