Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 50 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr45122.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr45122.c
new file mode 100644
index 000000000..e979b766f
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr45122.c
@@ -0,0 +1,50 @@
+/* PR tree-optimization/27285 */
+/* PR tree-optimization/45122 */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -funsafe-loop-optimizations" } */
+
+extern void abort (void);
+
+struct S { unsigned char a, b, c, d[16]; };
+
+void __attribute__ ((noinline))
+foo (struct S *x, struct S *y)
+{
+  int a, b;
+  unsigned char c, *d, *e;
+
+  b = x->b;
+  d = x->d;
+  e = y->d;
+  a = 0;
+  while (b)
+    {
+      if (b >= 8)
+	{
+	  c = 0xff;
+	  b -= 8;
+	}
+      else
+	{
+	  c = 0xff << (8 - b);
+	  b = 0;
+	}
+
+      e[a] = d[a] & c;
+      a++;
+    }
+}
+
+int
+main (void)
+{
+  struct S x = { 0, 25, 0, { 0xaa, 0xbb, 0xcc, 0xdd }};
+  struct S y = { 0, 0, 0, { 0 }};
+
+  foo (&x, &y);
+  if (x.d[0] != y.d[0] || x.d[1] != y.d[1]
+      || x.d[2] != y.d[2] || (x.d[3] & 0x80) != y.d[3])
+    abort ();
+   return 0;
+}