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

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
7eca0767 · Jan Hubicka · Jan Hubicka · 3a3ae5e5 · 7eca0767 · 7eca0767
Commit 7eca0767 authored Mar 17, 2004 by Jan Hubicka Committed by Jan Hubicka Mar 17, 2004
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gcc/ChangeLog
+5 -0

gcc/cfgrtl.c
+6 -2

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+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.

--- 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++;