From 7483eef82aecf04dc30cd9d835d1691f6073ebd6 Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <aoliva@redhat.com>
Date: Fri, 6 Jan 2012 20:20:55 +0000
Subject: [PATCH] re PR debug/51746 (Segfault in cselib_preserved_value_p)

PR debug/51746
* cselib.c (cselib_hash_rtx): Hash incoming VALUEs too.

From-SVN: r182963
---
 gcc/ChangeLog | 5 +++++
 gcc/cselib.c  | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0457656b3ff..2c65a6ad0b1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-01-06  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR debug/51746
+	* cselib.c (cselib_hash_rtx): Hash incoming VALUEs too.
+
 2012-01-06  Arnaud Charlet  <charlet@adacore.com>
 
 	* c-decl.c (ext_block): Moved up.
diff --git a/gcc/cselib.c b/gcc/cselib.c
index 9934abb8f41..7db24ae729a 100644
--- a/gcc/cselib.c
+++ b/gcc/cselib.c
@@ -1020,6 +1020,10 @@ cselib_hash_rtx (rtx x, int create, enum machine_mode memmode)
 
   switch (code)
     {
+    case VALUE:
+      e = CSELIB_VAL_PTR (x);
+      return e->hash;
+
     case MEM:
     case REG:
       e = cselib_lookup (x, GET_MODE (x), create, memmode);