From b98425dacbe1de9fb2ac9b28975240ccbfa0c813 Mon Sep 17 00:00:00 2001
From: Bernd Schmidt <bernds@codesourcery.com>
Date: Thu, 19 Aug 2010 23:34:07 +0000
Subject: [PATCH] re PR bootstrap/45350 (Failed to bootstrap on Linux/ia64)
PR bootstrap/45350
* combine.c (try_combine): Initialize i1_is_used and i2_is_used. Fix
a comment.
From-SVN: r163389
---
gcc/ChangeLog | 6 ++++++
gcc/combine.c | 6 +++---
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 18136b697af7..a1c3658a2ab8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-08-19 Bernd Schmidt <bernds@codesourcery.com>
+
+ PR bootstrap/45350
+ * combine.c (try_combine): Initialize i1_is_used and i2_is_used. Fix
+ a comment.
+
2010-08-19 Nathan Froyd <froydnj@codesourcery.com>
* target.def (function_arg, function_incoming_arg): Remove const
diff --git a/gcc/combine.c b/gcc/combine.c
index 6a2aa8ae4175..9c5d8d000409 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -2511,7 +2511,7 @@ try_combine (rtx i3, rtx i2, rtx i1, rtx i0, int *new_direct_jump_p)
/* Total number of SETs to put into I3. */
int total_sets;
/* Nonzero if I2's or I1's body now appears in I3. */
- int i2_is_used, i1_is_used;
+ int i2_is_used = 0, i1_is_used = 0;
/* INSN_CODEs for new I3, new I2, and user of condition code. */
int insn_code_number, i2_code_number = 0, other_code_number = 0;
/* Contains I3 if the destination of I3 is used in its source, which means
@@ -2546,8 +2546,8 @@ try_combine (rtx i3, rtx i2, rtx i1, rtx i0, int *new_direct_jump_p)
int i;
/* Only try four-insn combinations when there's high likelihood of
- success. Look for simple insns, such as loads of constants, unary
- operations, or binary operations involving a constant. */
+ success. Look for simple insns, such as loads of constants or
+ binary operations involving a constant. */
if (i0)
{
int i;
--
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