Sync down FSF r184235@google/gcc-4_6_2-mobile branch

1) Get mostly new patches from FSF gcc-4.6 branch
2) Fix PR52129
3) Insert GNU-stack note for all ARM targets

Change-Id: I2b9926981210e517e4021242908074319a91d6bd

6 files changed, 140 insertions, 0 deletions

diff --git a/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-1.c b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-1.c
new file mode 100644
index 000000000..d21a26252
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-1.c
@@ -0,0 +1,31 @@
+/* PR middle-end/49897 */
+/* { dg-do run } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  int i, j, x = 0, y, sum = 0;
+#pragma omp parallel reduction(+:sum)
+  {
+  #pragma omp for firstprivate(x) lastprivate(x, y)
+    for (i = 0; i < 10; i++)
+      {
+	x = i;
+	y = 0;
+      #pragma omp parallel reduction(+:sum)
+	{
+	#pragma omp for firstprivate(y) lastprivate(y)
+	  for (j = 0; j < 10; j++)
+	    {
+	      y = j;
+	      sum += y;
+	    }
+	}
+      }
+  }
+  if (x != 9 || y != 9 || sum != 450)
+    abort ();
+  return 0;
+}
diff --git a/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-2.c b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-2.c
new file mode 100644
index 000000000..c9ea5eced
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49897-2.c
@@ -0,0 +1,25 @@
+/* PR middle-end/49897 */
+/* { dg-do run } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  int i, j, x = 0, y, sum = 0;
+#pragma omp parallel for reduction(+:sum) firstprivate(x) lastprivate(x, y)
+  for (i = 0; i < 10; i++)
+    {
+      x = i;
+      y = 0;
+    #pragma omp parallel for reduction(+:sum) firstprivate(y) lastprivate(y)
+      for (j = 0; j < 10; j++)
+	{
+	  y = j;
+	  sum += y;
+	}
+    }
+  if (x != 9 || y != 9 || sum != 450)
+    abort ();
+  return 0;
+}
diff --git a/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-1.c b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-1.c
new file mode 100644
index 000000000..175426d40
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-1.c
@@ -0,0 +1,26 @@
+/* PR middle-end/49898 */
+/* { dg-do run } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  int i, j, sum = 0;
+#pragma omp parallel
+  {
+  #pragma omp for reduction(+:sum)
+    for (i = 0; i < 10; i++)
+      {
+      #pragma omp parallel
+	{
+	#pragma omp for reduction(+:sum)
+	  for (j = 0; j < 10; j++)
+	    sum += j;
+	}
+      }
+  }
+  if (sum != 450)
+    abort ();
+  return 0;
+}
diff --git a/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-2.c b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-2.c
new file mode 100644
index 000000000..03ba0f8ff
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.c/pr49898-2.c
@@ -0,0 +1,18 @@
+/* PR middle-end/49898 */
+/* { dg-do run } */
+
+extern void abort (void);
+
+int
+main ()
+{
+  int i, j, sum = 0;
+#pragma omp parallel for reduction(+:sum)
+  for (i = 0; i < 10; i++)
+    #pragma omp parallel for reduction(+:sum)
+    for (j = 0; j < 10; j++)
+      sum += j;
+  if (sum != 450)
+    abort ();
+  return 0;
+}
diff --git a/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-1.f90 b/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-1.f90
new file mode 100644
index 000000000..cf2bb66fc
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-1.f90
@@ -0,0 +1,18 @@
+! PR fortran/49792
+! { dg-do run }
+
+subroutine reverse(n, a)
+  integer :: n
+  real(kind=8) :: a(n)
+!$omp parallel workshare
+  a(:) = a(n:1:-1)
+!$omp end parallel workshare
+end subroutine reverse
+
+program pr49792
+  real(kind=8) :: a(16) = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
+  real(kind=8) :: b(16)
+  b(:) = a(16:1:-1)
+  call reverse (16,a)
+  if (any (a.ne.b)) call abort
+end program pr49792
diff --git a/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-2.f90 b/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-2.f90
new file mode 100644
index 000000000..2101028a9
--- /dev/null
+++ b/gcc-4.6/libgomp/testsuite/libgomp.fortran/pr49792-2.f90
@@ -0,0 +1,22 @@
+! PR fortran/49792
+! { dg-do run }
+! { dg-options "-std=f2003 -fall-intrinsics" }
+
+subroutine reverse(n, a)
+  integer :: n
+  real(kind=8) :: a(n)
+!$omp parallel workshare
+  a(:) = a(n:1:-1)
+!$omp end parallel workshare
+end subroutine reverse
+
+program pr49792
+  integer :: b(16)
+  integer, allocatable :: a(:)
+  b = 1
+!$omp parallel workshare
+  a = b
+!$omp end parallel workshare
+  if (size(a).ne.size(b)) call abort()
+  if (any (a.ne.b)) call abort()
+end program pr49792