From 2cfa504a0899b31068b37c5ab4bcaaed5c6973d5 Mon Sep 17 00:00:00 2001
From: Thomas Preud'homme <thomas.preudhomme@arm.com>
Date: Tue, 10 Jun 2014 02:10:46 +0000
Subject: [PATCH] tree-ssa-math-opts.c (find_bswap_or_nop_load): Check return
 value of init_symbolic_number ().

2014-06-09  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * tree-ssa-math-opts.c (find_bswap_or_nop_load): Check return value of
    init_symbolic_number ().

From-SVN: r211395
---
 gcc/ChangeLog            | 5 +++++
 gcc/tree-ssa-math-opts.c | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e12f2f9a1c2..0c63d04b523 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-06-09  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	* tree-ssa-math-opts.c (find_bswap_or_nop_load): Check return value of
+	init_symbolic_number ().
+
 2014-05-18  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR middle-end/61141
diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c
index a928ad926bb..1f011a6f937 100644
--- a/gcc/tree-ssa-math-opts.c
+++ b/gcc/tree-ssa-math-opts.c
@@ -1784,7 +1784,8 @@ find_bswap_or_nop_load (gimple stmt, tree ref, struct symbolic_number *n)
   if (bitsize % BITS_PER_UNIT)
     return false;
 
-  init_symbolic_number (n, ref);
+  if (!init_symbolic_number (n, ref))
+    return false;
   n->base_addr = base_addr;
   n->offset = offset;
   n->bytepos = bitpos / BITS_PER_UNIT;