Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 188 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/pr47893.c b/gcc-4.9/gcc/testsuite/gcc.dg/pr47893.c
new file mode 100644
index 000000000..86eb78d0f
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/pr47893.c
@@ -0,0 +1,188 @@
+/* PR middle-end/47893 */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+/* { dg-options "-O2 -mtune=atom -fno-omit-frame-pointer -fno-strict-aliasing" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
+/* { dg-skip-if "Too much RAM needed" { "avr-*-*" } { "*" } { "" } } */
+
+extern void abort (void);
+
+struct S
+{
+  unsigned s1:4, s2:2, s3:2, s4:2, s5:2, s6:1, s7:1, s8:1, s9:1, s10:1;
+  int s11:16; unsigned s12:4; int s13:16; unsigned s14:2;
+  int s15:16; unsigned s16:4; int s17:16; unsigned s18:2;
+};
+
+struct T
+{
+  unsigned t[3];
+};
+
+struct U
+{
+  unsigned u1, u2;
+};
+
+struct V;
+
+struct W
+{
+  char w1[24]; struct V *w2; unsigned w3; char w4[28912];
+  unsigned int w5; char w6[60];
+};
+
+struct X
+{
+  unsigned int x[2];
+};
+
+struct V
+{
+  int v1;
+  struct X v2[3];
+  char v3[28];
+};
+
+struct Y
+{
+  void *y1;
+  char y2[3076];
+  struct T y3[32];
+  char y4[1052];
+};
+
+volatile struct S v1 = { .s15 = -1, .s16 = 15, .s17 = -1, .s18 = 3 };
+
+__attribute__ ((noinline, noclone))
+int
+fn1 (int x)
+{
+  int r;
+  __asm__ volatile ("" : "=r" (r) : "0" (1), "r" (x) : "memory");
+  return r;
+}
+
+volatile int cnt;
+
+__attribute__ ((noinline, noclone))
+#ifdef __i386__
+__attribute__ ((regparm (2)))
+#endif
+struct S
+fn2 (struct Y *x, const struct X *y)
+{
+  if (++cnt > 1)
+    abort ();
+  __asm__ volatile ("" : : "r" (x), "r" (y) : "memory");
+  return v1;
+}
+
+__attribute__ ((noinline, noclone))
+void fn3 (void *x, unsigned y, const struct S *z, unsigned w)
+{
+  __asm__ volatile ("" : : "r" (x), "r" (y), "r" (z), "r" (w) : "memory");
+}
+
+volatile struct U v2;
+
+__attribute__ ((noinline, noclone))
+struct U
+fn4 (void *x, unsigned y)
+{
+  __asm__ volatile ("" : : "r" (x), "r" (y) : "memory");
+  return v2;
+}
+
+__attribute__ ((noinline, noclone))
+struct S
+fn5 (void *x)
+{
+  __asm__ volatile ("" : : "r" (x) : "memory");
+  return v1;
+}
+
+volatile struct T v3;
+
+__attribute__ ((noinline, noclone))
+struct T fn6 (void *x)
+{
+  __asm__ volatile ("" : : "r" (x) : "memory");
+  return v3;
+}
+
+__attribute__ ((noinline, noclone))
+struct T fn7 (void *x, unsigned y, unsigned z)
+{
+  __asm__ volatile ("" : : "r" (x), "r" (y), "r" (z) : "memory");
+  return v3;
+}
+
+static void
+fn8 (struct Y *x, const struct V *y)
+{
+  void *a = x->y1;
+  struct S b[4];
+  unsigned i, c;
+  c = fn1 (y->v1);
+  for (i = 0; i < c; i++)
+    b[i] = fn2 (x, &y->v2[i]);
+  fn3 (a, y->v1, b, c);
+}
+
+static inline void
+fn9 (void *x, struct S y __attribute__((unused)))
+{
+  fn4 (x, 8);
+}
+
+static void
+fn10 (struct Y *x)
+{
+  void *a = x->y1;
+  struct T b __attribute__((unused)) = fn6 (a);
+  fn9 (a, fn5 (a));
+}
+
+__attribute__((noinline, noclone))
+int
+fn11 (unsigned int x, void *y, const struct W *z,
+      unsigned int w, const char *v, const char *u)
+{
+  struct Y a, *t;
+  unsigned i;
+  t = &a;
+  __builtin_memset (t, 0, sizeof *t);
+  t->y1 = y;
+  if (x == 0)
+    {
+      if (z->w3 & 1)
+	fn10 (t);
+      for (i = 0; i < w; i++)
+	{
+	  if (v[i] == 0)
+	    t->y3[i] = fn7 (y, 0, u[i]);
+	  else
+	    return 0;
+	}
+    }
+  else
+    for (i = 0; i < w; i++)
+      t->y3[i] = fn7 (y, v[i], u[i]);
+  for (i = 0; i < z->w5; i++)
+    fn8 (t, &z->w2[i]);
+  return 0;
+}
+
+volatile int i;
+const char *volatile p = "";
+
+int
+main ()
+{
+  struct V v = { .v1 = 0 };
+  struct W w = { .w5 = 1, .w2 = &v };
+  fn11 (i + 1, (void *) p, &w, i, (const char *) p, (const char *) p);
+  if (cnt != 1)
+    abort ();
+  return 0;
+}