From f16c1783b4b2c93a42eb36b4f136ec46bd3ce834 Mon Sep 17 00:00:00 2001
From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 13 Apr 2011 15:52:17 +0000
Subject: [PATCH 115/200] 	PR middle-end/48591
 	* omp-low.c (expand_omp_atomic_fetch_op): Return false if decl is
 	NULL.
 	(expand_omp_atomic_pipeline): Return false if cmpxchg is NULL.

	* gcc.dg/gomp/pr48591.c: New test.

	* testsuite/libgomp.c/pr48591.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172381 138bc75d-0d04-0410-961f-82ee72b054a4

index c3f2178..5b0fdff 100644
--- a/gcc/omp-low.c
+++ b/gcc/omp-low.c
@@ -5005,6 +5005,8 @@ expand_omp_atomic_fetch_op (basic_block load_bb,
     return false;
 
   decl = built_in_decls[base + index + 1];
+  if (decl == NULL_TREE)
+    return false;
   itype = TREE_TYPE (TREE_TYPE (decl));
 
   if (direct_optab_handler (optab, TYPE_MODE (itype)) == CODE_FOR_nothing)
@@ -5056,6 +5058,8 @@ expand_omp_atomic_pipeline (basic_block load_bb, basic_block store_bb,
   edge e;
 
   cmpxchg = built_in_decls[BUILT_IN_VAL_COMPARE_AND_SWAP_N + index + 1];
+  if (cmpxchg == NULL_TREE)
+    return false;
   type = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (addr)));
   itype = TREE_TYPE (TREE_TYPE (cmpxchg));
 
new file mode 100644
index 0000000..e6cb106
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/gomp/pr48591.c
@@ -0,0 +1,22 @@
+/* PR middle-end/48591 */
+/* { dg-do compile { target i?86-*-* x86_64-*-* ia64-*-* } } */
+/* { dg-options "-fopenmp" } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  __float128 f = 0.0;
+  int i;
+  #pragma omp parallel for reduction(+:f)
+    for (i = 0; i < 128; i++)
+      f += 0.5Q;
+  if (f != 64.0Q)
+    abort ();
+  #pragma omp atomic
+    f += 8.5Q;
+  if (f != 72.5Q)
+    abort ();
+  return 0;
+}
new file mode 100644
index 0000000..18dfd7f
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c/pr48591.c
@@ -0,0 +1,22 @@
+/* PR middle-end/48591 */
+/* { dg-do run { target i?86-*-linux* x86_64-*-linux* ia64-*-linux* } } */
+/* { dg-options "-fopenmp" } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  __float128 f = 0.0;
+  int i;
+  #pragma omp parallel for reduction(+:f)
+    for (i = 0; i < 128; i++)
+      f += 0.5Q;
+  if (f != 64.0Q)
+    abort ();
+  #pragma omp atomic
+    f += 8.5Q;
+  if (f != 72.5Q)
+    abort ();
+  return 0;
+}
-- 
1.7.0.4