From 7eca07679863f0385a4b125517a302cb489e4148 Mon Sep 17 00:00:00 2001
From: Jan Hubicka <jh@suse.cz>
Date: Wed, 17 Mar 2004 12:42:10 +0100
Subject: [PATCH] cfgrtl.c (rtl_create_basic_block): Pre-allocate
basic_block_info array.
* cfgrtl.c (rtl_create_basic_block): Pre-allocate basic_block_info
array.
From-SVN: r79585
---
gcc/ChangeLog | 5 +++++
gcc/cfgrtl.c | 8 ++++++--
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2cfe0c100fa7..ea5a37daabe7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-03-17 Jan Hubicka <jh@suse.cz>
+
+ * cfgrtl.c (rtl_create_basic_block): Pre-allocate basic_block_info
+ array.
+
2004-03-17 James E Wilson <wilson@specifixinc.com>
* config/mips/mips.md (zero_extendsidi2): Add length attribute.
diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c
index 3363a2d97204..f38c53c5eda6 100644
--- a/gcc/cfgrtl.c
+++ b/gcc/cfgrtl.c
@@ -338,8 +338,12 @@ rtl_create_basic_block (void *headp, void *endp, basic_block after)
rtx head = headp, end = endp;
basic_block bb;
- /* Place the new block just after the end. */
- VARRAY_GROW (basic_block_info, last_basic_block + 1);
+ /* Grow the basic block array if needed. */
+ if ((size_t) last_basic_block >= VARRAY_SIZE (basic_block_info))
+ {
+ size_t new_size = last_basic_block + (last_basic_block + 3) / 4;
+ VARRAY_GROW (basic_block_info, new_size);
+ }
n_basic_blocks++;
--
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