From 3bf203945aaaedc9cefe03f32bb18bdd783f4e4f Mon Sep 17 00:00:00 2001
From: Eric Botcazou <ebotcazou@adacore.com>
Date: Sun, 18 Sep 2011 22:02:27 +0000
Subject: [PATCH] re PR target/50091 (-fstack-check generates wrong assembly)

	PR target/50091
	* config/rs6000/rs6000.md (probe_stack): Use explicit operand.

Co-Authored-By: Iain Sandoe <developer@sandoe-acoustics.co.uk>

From-SVN: r178946
---
 gcc/ChangeLog               | 6 ++++++
 gcc/config/rs6000/rs6000.md | 6 +++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 27d8169b47e1..c1458efab2b5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-09-18  Eric Botcazou  <ebotcazou@adacore.com>
+	    Iain Sandoe  <developer@sandoe-acoustics.co.uk>
+
+	PR target/50091
+	* config/rs6000/rs6000.md (probe_stack): Use explicit operand.
+
 2011-09-08  Martin Jambor  <mjambor@suse.cz>
 
 	Backport from mainline
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 7749806c98c5..a2695d1f1537 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -12473,7 +12473,11 @@
   [(set (match_operand 0 "memory_operand" "=m")
         (unspec [(const_int 0)] UNSPEC_PROBE_STACK))]
   ""
-  "{st%U0%X0|stw%U0%X0} 0,%0"
+  "*
+{
+  operands[1] = gen_rtx_REG (Pmode, 0);
+  return \"{st%U0%X0|stw%U0%X0} %1,%0\";
+}"
   [(set_attr "type" "store")
    (set_attr "length" "4")])
 
-- 
2.47.2