backport: re PR target/7434 ([x86_64] ICE in change_address_1, at emit-rtl.c:1934)

	Merge from gcc-3_2-rhl8-branch:
	2003-04-23  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/tls/opt-6.c: New test.

	2003-04-05  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/20030405-1.c: New test.

	2003-03-09  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/20030309-1.c: New test.

	2003-03-07  Eric Botcazou  <ebotcazou@libertysurf.fr>

	* gcc.c-torture/execute/20030307-1.c: New test.

	2003-02-20  Randolph Chung  <tausq@debian.org>

	* gcc.c-torture/compile/20030220-1.c: New test.

	2003-02-18  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/20030217-1.c: New test.

	2003-01-29  Jakub Jelinek  <jakub@redhat.com>

	* gcc.c-torture/compile/20020129-1.c: New test.

	2002-12-21  Eric Botcazou  <ebotcazou@libertysurf.fr>

	* gcc.dg/unroll-1.c: New test.

	2002-11-16  Jan Hubicka  <jh@suse.cz>

	* gcc.c-torture/execute/20020920-1.c: New test.

	2002-10-08  Jakub Jelinek  <jakub@redhat.com>

	PR target/7434
	* gcc.c-torture/compile/20021008-1.c: New test.

	2002-08-10  Gwenole Beauchesne  <gbeauchesne@mandrakesoft.com>

	PR target/7559
	* testsuite/gcc.c-torture/execute/20020810-1.c: New test.

	2002-08-07  Jakub Jelinek  <jakub@redhat.com>

	* gcc.c-torture/compile/20020807-1.c: New test.

	2002-07-30  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/tls/opt-1.c: New test.

	2002-07-29  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/20020729-1.c: New test.

	2002-07-20  Jakub Jelinek  <jakub@redhat.com>

	* g++.dg/opt/life1.C: New test.

	2002-05-20  Jakub Jelinek  <jakub@redhat.com>

	* gcc.dg/20020525-1.c: New test.

	2002-05-24  Jakub Jelinek  <jakub@redhat.com>

	PR c++/6794
	* g++.dg/ext/pretty1.C: New test.
	* g++.dg/ext/pretty2.C: New test.

From-SVN: r66877

19 files changed, 683 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5ae4d12..ac46fbb 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,78 @@
+2003-05-16  Jakub Jelinek  <jakub@redhat.com>
+
+	Merge from gcc-3_2-rhl8-branch:
+	2003-04-23  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/tls/opt-6.c: New test.
+
+	2003-04-05  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/20030405-1.c: New test.
+
+	2003-03-09  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/20030309-1.c: New test.
+
+	2003-03-07  Eric Botcazou  <ebotcazou@libertysurf.fr>
+
+	* gcc.c-torture/execute/20030307-1.c: New test.
+
+	2003-02-20  Randolph Chung  <tausq@debian.org>
+
+	* gcc.c-torture/compile/20030220-1.c: New test.
+
+	2003-02-18  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/20030217-1.c: New test.
+
+	2003-01-29  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.c-torture/compile/20020129-1.c: New test.
+
+	2002-12-21  Eric Botcazou  <ebotcazou@libertysurf.fr>
+
+	* gcc.dg/unroll-1.c: New test.
+
+	2002-11-16  Jan Hubicka  <jh@suse.cz>
+
+	* gcc.c-torture/execute/20020920-1.c: New test.
+
+	2002-10-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/7434
+	* gcc.c-torture/compile/20021008-1.c: New test.
+
+	2002-08-10  Gwenole Beauchesne  <gbeauchesne@mandrakesoft.com>
+
+	PR target/7559
+	* testsuite/gcc.c-torture/execute/20020810-1.c: New test.
+
+	2002-08-07  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.c-torture/compile/20020807-1.c: New test.
+
+	2002-07-30  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/tls/opt-1.c: New test.
+
+	2002-07-29  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/20020729-1.c: New test.
+
+	2002-07-20  Jakub Jelinek  <jakub@redhat.com>
+
+	* g++.dg/opt/life1.C: New test.
+
+	2002-05-20  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/20020525-1.c: New test.
+
+	2002-05-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/6794
+	* g++.dg/ext/pretty1.C: New test.
+	* g++.dg/ext/pretty2.C: New test.
+
 2003-05-15  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/8385
diff --git a/gcc/testsuite/g++.dg/ext/pretty1.C b/gcc/testsuite/g++.dg/ext/pretty1.C
new file mode 100644
index 0000000..06608ae
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/pretty1.C
@@ -0,0 +1,67 @@
+// PR c++/6794
+// Test whether __PRETTY_FUNCTION__ works in templates, functions and
+// in initializers at global scope
+// { dg-do compile }
+// { dg-options "" }
+
+extern "C" void __assert_fail (const char *, const char *,
+			       unsigned int, const char *)
+  throw() __attribute__((noreturn));
+extern "C" void abort (void);
+extern "C" void exit (int);
+
+#define str(expr) #expr
+#define assert(expr)						\
+  ((expr) ? 0 : (__assert_fail (str(expr), __FILE__, __LINE__,	\
+				__PRETTY_FUNCTION__), 0))
+
+int __attribute__((noinline))
+foo (void)
+{
+  return 1;
+}
+
+template<class T> int
+bar (T)
+{
+  return (assert (foo ()), 1);
+}
+
+template<> int
+bar<int> (int)
+{
+  return (assert (foo ()), 2);
+}
+
+int a = (assert (foo ()), 1);
+int b = (assert (foo ()), 2);
+
+int
+main ()
+{
+  double c = 1.0;
+  unsigned char *d = 0;
+  int e = (assert (foo ()), 3);
+
+  bar (c);
+  bar (d);
+  bar (e);
+}
+
+namespace N
+{
+  int f = (assert (foo ()), 4);
+}
+
+void __attribute__((noinline))
+__assert_fail (const char *cond, const char *file, unsigned int line,
+	       const char *pretty) throw ()
+{
+  abort ();
+}
+
+// { dg-final { scan-assembler "int bar\\(T\\).*with T = int" } }
+// { dg-final { scan-assembler "top level" } }
+// { dg-final { scan-assembler "int main\\(\\)" } }
+// { dg-final { scan-assembler "int bar\\(T\\).*with T = double" } }
+// { dg-final { scan-assembler "int bar\\(T\\).*with T = unsigned char\*" } }
diff --git a/gcc/testsuite/g++.dg/ext/pretty2.C b/gcc/testsuite/g++.dg/ext/pretty2.C
new file mode 100644
index 0000000..0c05da9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/pretty2.C
@@ -0,0 +1,61 @@
+// PR c++/6794
+// Test whether __PRETTY_FUNCTION__ works in templates, functions and
+// in initializers at global scope
+// { dg-do run }
+// { dg-options "" }
+
+extern "C" void __assert_fail (const char *, const char *,
+			       unsigned int, const char *)
+  throw() __attribute__((noreturn));
+extern "C" void abort (void);
+extern "C" void exit (int);
+
+#define str(expr) #expr
+#define assert(expr)						\
+  ((expr) ? 0 : (__assert_fail (str(expr), __FILE__, __LINE__,	\
+				__PRETTY_FUNCTION__), 0))
+
+int __attribute__((noinline))
+foo (void)
+{
+  return 1;
+}
+
+template<class T> int
+bar (T)
+{
+  return (assert (foo ()), 1);
+}
+
+template<> int
+bar<int> (int)
+{
+  return (assert (foo ()), 2);
+}
+
+int a = (assert (foo ()), 1);
+int b = (assert (foo ()), 2);
+
+int
+main ()
+{
+  double c = 1.0;
+  unsigned char *d = 0;
+  int e = (assert (foo ()), 3);
+
+  bar (c);
+  bar (d);
+  bar (e);
+}
+
+namespace N
+{
+  int f = (assert (foo ()), 4);
+}
+
+void __attribute__((noinline))
+__assert_fail (const char *cond, const char *file, unsigned int line,
+	       const char *pretty) throw ()
+{
+  abort ();
+}
diff --git a/gcc/testsuite/g++.dg/opt/life1.C b/gcc/testsuite/g++.dg/opt/life1.C
new file mode 100644
index 0000000..ac7a9f2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/life1.C
@@ -0,0 +1,16 @@
+// This testcase did not set up the pic register on IA-32 due
+// to bug in calculate_global_regs_live EH edge handling.
+// { dg-do compile { target i?86-*-linux* } }
+// { dg-options "-O2 -fPIC" }
+
+struct A { };
+
+void foo (A (*fn)())
+{
+  try {
+    A a = fn ();
+  } catch (...) {
+  }
+}
+
+// { dg-final { scan-assembler "GLOBAL_OFFSET_TABLE" } }
diff --git a/gcc/testsuite/gcc.c-torture/compile/20020129-1.c b/gcc/testsuite/gcc.c-torture/compile/20020129-1.c
new file mode 100644
index 0000000..7b17ba4
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20020129-1.c
@@ -0,0 +1,17 @@
+/* Test call to static variable.  */
+
+typedef struct
+{
+  long long a[10];
+} A;
+  
+void bar (A *);
+  
+typedef int (*B)(int);
+  
+void foo (void)
+{
+  static A a;
+  bar (&a);
+  (*(B)&a) (1);
+}
diff --git a/gcc/testsuite/gcc.c-torture/compile/20020807-1.c b/gcc/testsuite/gcc.c-torture/compile/20020807-1.c
new file mode 100644
index 0000000..c1cc815
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20020807-1.c
@@ -0,0 +1,33 @@
+int x;
+
+static int
+__attribute__ ((noinline))
+foo (void)
+{
+  return 0;
+}
+
+static void
+__attribute__ ((noinline))
+bar (void)
+{
+}
+
+static inline void
+baz (void)
+{
+  char arr[x];
+
+lab:
+  if (foo () == -1)
+    {
+      bar ();
+      goto lab;
+    }
+}
+
+void
+test (void)
+{
+  baz ();
+}
diff --git a/gcc/testsuite/gcc.c-torture/compile/20021008-1.c b/gcc/testsuite/gcc.c-torture/compile/20021008-1.c
new file mode 100644
index 0000000..9d5a7f2
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20021008-1.c
@@ -0,0 +1,11 @@
+/* Origin: PR target/7434 Gwenole Beauchesne <gbeauchesne@mandrakesoft.com> */
+
+int main(void)
+{
+  static const int align_g[] = { 1, 2, 4, 8, 16 };
+  char * buf;
+  int i = 0;
+  volatile long double val = 0;
+  val = *((long double *)(buf + align_g[i]));
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.c-torture/compile/20030220-1.c b/gcc/testsuite/gcc.c-torture/compile/20030220-1.c
new file mode 100644
index 0000000..59a03e4
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20030220-1.c
@@ -0,0 +1,20 @@
+/* PR optimization/9768 */
+/* Originator: Randolph Chung <tausq@debian.org> */
+
+inline int fixfloor (long x)
+{
+  if (x >= 0)
+    return (x >> 16);
+  else
+    return ~((~x) >> 16);
+}
+
+inline int fixtoi (long x)
+{
+  return fixfloor(x) + ((x & 0x8000) >> 15);
+}
+
+int foo(long x, long y)
+{
+  return fixtoi(x*y);
+}
diff --git a/gcc/testsuite/gcc.c-torture/execute/20020810-1.c b/gcc/testsuite/gcc.c-torture/execute/20020810-1.c
new file mode 100644
index 0000000..d3386973
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20020810-1.c
@@ -0,0 +1,38 @@
+/* PR target/7559
+   This testcase was miscompiled on x86-64, because classify_argument
+   wrongly computed the offset of nested structure fields.  */
+
+extern void abort (void);
+
+struct A
+{
+  long x;
+};
+
+struct R
+{
+  struct A a, b;
+};
+
+struct R R = { 100, 200 };
+
+void f (struct R r)
+{
+  if (r.a.x != R.a.x || r.b.x != R.b.x)
+    abort ();
+}
+
+struct R g (void)
+{
+  return R;
+}
+
+int main (void)
+{
+  struct R r;
+  f(R);
+  r = g();
+  if (r.a.x != R.a.x || r.b.x != R.b.x)
+    abort ();
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.c-torture/execute/20020920-1.c b/gcc/testsuite/gcc.c-torture/execute/20020920-1.c
new file mode 100644
index 0000000..4539742
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20020920-1.c
@@ -0,0 +1,31 @@
+extern void abort (void);
+extern void exit (int);
+
+struct B
+{
+  int x;
+  int y;
+};
+
+struct A
+{
+  int z;
+  struct B b;
+};
+
+struct A
+f ()
+{
+  struct B b = { 0, 1 };
+  struct A a = { 2, b };
+  return a;
+}
+
+int
+main (void)
+{
+  struct A a = f ();
+  if (a.z != 2 || a.b.x != 0 || a.b.y != 1)
+    abort ();
+  exit (0);
+}
diff --git a/gcc/testsuite/gcc.c-torture/execute/20030307-1.c b/gcc/testsuite/gcc.c-torture/execute/20030307-1.c
new file mode 100644
index 0000000..3f4eb86
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20030307-1.c
@@ -0,0 +1,26 @@
+/* PR optimization/8726 */
+/* Originator: Paul Eggert <eggert@twinsun.com> */
+
+/* Verify that GCC doesn't miscompile tail calls on Sparc. */
+
+extern void abort(void);
+
+int fcntl_lock(int fd, int op, long long offset, long long count, int type);
+
+int vfswrap_lock(char *fsp, int fd, int op, long long offset, long long count, int type)
+{
+  return fcntl_lock(fd, op, offset, count, type);
+}
+
+int fcntl_lock(int fd, int op, long long offset, long long count, int type)
+{
+  return type;
+}
+
+int main(void)
+{
+  if (vfswrap_lock (0, 1, 2, 3, 4, 5) != 5)
+    abort();
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/20020525-1.c b/gcc/testsuite/gcc.dg/20020525-1.c
new file mode 100644
index 0000000..5f2e8c9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20020525-1.c
@@ -0,0 +1,24 @@
+/* PR optimization/6703
+   Origin: Glen Nakamura <glen@imodulo.com> */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+extern void abort (void);
+extern void exit (int);
+
+void foo (int *x, int y)
+{
+  __builtin_memset (x, 0, y);
+}
+  
+int main ()
+{
+  int x[2] = { 0x5a5a5a5a, 0x5a5a5a5a };
+    
+  if (x[1] != 0x5a5a5a5a)
+    abort ();
+  foo (x, sizeof (int) + 1);
+  if (x[1] == 0x5a5a5a5a)
+    abort ();
+  exit (0);
+}
diff --git a/gcc/testsuite/gcc.dg/20020729-1.c b/gcc/testsuite/gcc.dg/20020729-1.c
new file mode 100644
index 0000000..da1ed1b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20020729-1.c
@@ -0,0 +1,51 @@
+/* { dg-do compile { target i?86-*-* } } */
+/* { dg-options "-O2 -march=k6" } */
+
+static inline void *
+baz (void *s, unsigned long c, unsigned int count)
+{
+  int d0, d1;
+  __asm__ __volatile__ (""
+			: "=&c" (d0), "=&D" (d1)
+			:"a" (c), "q" (count), "0" (count / 4), "1" ((long) s)
+			:"memory");
+  return s;
+}
+
+struct A
+{
+  unsigned long *a;
+};
+
+inline static void *
+bar (struct A *x, int y)
+{
+  char *ptr;
+
+  ptr = (void *) x->a[y >> 12];
+  ptr += y % (1UL << 12);
+  return (void *) ptr;
+}
+
+int
+foo (struct A *x, unsigned int *y, int z, int u)
+{
+  int a, b, c, d, e;
+
+  z += *y;
+  c = z + u;
+  a = (z >> 12) + 1;
+  do
+    {
+      b = (a << 12);
+      d = b - z;
+      e = c - z;
+      if (e < d)
+	d = e;
+      baz (bar (x, z), 0, d);
+      z = b;
+      a++;
+    }
+  while (z < c);
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/20030217-1.c b/gcc/testsuite/gcc.dg/20030217-1.c
new file mode 100644
index 0000000..d0cd913
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20030217-1.c
@@ -0,0 +1,18 @@
+/* Test whether denormal floating point constants in hexadecimal notation
+   are parsed correctly.  */
+/* { dg-do run { target i?86-*-linux* x86_64-*-* } } */
+/* { dg-options "-std=c99" } */
+
+long double d = 0x0.0000003ffffffff00000p-16357L;
+long double e = 0x0.0000003ffffffff00000p-16356L;
+
+extern void abort (void);
+extern void exit (int);
+
+int
+main (void)
+{
+  if (d != e / 2.0)
+    abort ();
+  exit (0);
+}
diff --git a/gcc/testsuite/gcc.dg/20030309-1.c b/gcc/testsuite/gcc.dg/20030309-1.c
new file mode 100644
index 0000000..2431bc1
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20030309-1.c
@@ -0,0 +1,42 @@
+/* { dg-do link } */
+/* { dg-options "-O2" } */
+
+struct A0 { int x; };
+struct A1 { int x; int y[1]; };
+struct A2 { int x; int y[2]; };
+struct A3 { int x; int y[3]; };
+struct A4 { int x; int y[4]; };
+
+void *s;
+int u;
+
+int
+main (void)
+{
+  int x;
+  void *t = s;
+
+  switch (u)
+    {
+    case 0:
+      x = ((struct A0 *) t)->x;
+      break;
+    case 1:
+      x = ((struct A1 *) t)->x;
+      break;
+    case 2:
+      x = ((struct A2 *) t)->x;
+      break;
+    case 3:
+      x = ((struct A3 *) t)->x;
+      break;
+    case 4:
+      x = ((struct A4 *) t)->x;
+      break;
+    default:
+      x = 0;
+      break;
+    }
+
+  return x;
+}
diff --git a/gcc/testsuite/gcc.dg/20030405-1.c b/gcc/testsuite/gcc.dg/20030405-1.c
new file mode 100644
index 0000000..ec19d5c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20030405-1.c
@@ -0,0 +1,29 @@
+/* { dg-do compile { target ia64-*-* } } */
+/* { dg-options "-O2" } */
+
+int
+foo (int x, int y)
+{
+  if (y == 0)
+    {
+      register long r8 asm ("r8");
+      register long r15 asm ("r15") = 1;
+      long retval;
+      __asm __volatile ("foo" : "=r" (r8), "=r" (r15) : "1" (r15));
+      retval = r8;
+      y = retval;
+    }
+
+  {
+    register long r8 asm ("r8");
+    register long r15 asm ("r15") = 2;
+    long retval;
+    register long _out1 asm ("out1") = x;
+    register long _out0 asm ("out0") = y;
+    __asm __volatile ("foo"
+		      : "=r" (r8), "=r" (r15) , "=r" (_out0), "=r" (_out1)
+		      : "1" (r15) , "2" (_out0), "3" (_out1));
+    retval = r8;
+    return retval;
+  }
+}
diff --git a/gcc/testsuite/gcc.dg/tls/opt-1.c b/gcc/testsuite/gcc.dg/tls/opt-1.c
new file mode 100644
index 0000000..8523c76
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tls/opt-1.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fPIC" } */
+/* { dg-options "-O2 -fPIC -mtune=i686" { target i?86-*-* } } */
+
+extern __thread int thr;
+
+static int x;
+
+static void
+bar (void)
+{
+  x = 1;
+}
+
+static void
+#ifdef __i386__
+__attribute__ ((regparm (3)))
+#endif
+foo (const char *x, void *y, int *z)
+{
+  bar ();
+}
+
+void
+test (const char *x, void *y)
+{
+  foo (x, y, &thr);
+}
diff --git a/gcc/testsuite/gcc.dg/tls/opt-6.c b/gcc/testsuite/gcc.dg/tls/opt-6.c
new file mode 100644
index 0000000..de04c1c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tls/opt-6.c
@@ -0,0 +1,70 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+extern void abort (void);
+extern void exit (int);
+
+struct A
+{
+  char a;
+  int b;
+  long long c;
+};
+extern __thread struct A a1, a2, a3, a4;
+extern struct A *f1a (void);
+extern struct A *f2a (void);
+extern struct A *f3a (void);
+extern struct A *f4a (void);
+extern struct A *f5a (void);
+extern struct A *f6a (void);
+extern struct A *f7a (void);
+extern struct A *f8a (void);
+extern struct A *f9a (void);
+extern struct A *f10a (void);
+extern int f1b (void);
+extern int f2b (void);
+extern int f3b (void);
+extern int f4b (void);
+extern int f5b (void);
+extern int f6b (void);
+extern int f7b (void);
+extern int f8b (void);
+extern int f9b (void);
+extern int f10b (void);
+extern void check1 (void);
+extern void check2 (void);
+__thread int dummy = 12;
+__thread struct A local = { 1, 2, 3 };
+
+int
+main (void)
+{
+  struct A *p;
+
+  if (local.a != 1 || local.b != 2 || local.c != 3)
+    abort ();
+  if (a1.a != 4 || a1.b != 5 || a1.c != 6)
+    abort ();
+  if (a2.a != 22 || a2.b != 23 || a2.c != 24)
+    abort ();
+  if (a3.a != 10 || a3.b != 11 || a3.c != 12)
+    abort ();
+  if (a4.a != 25 || a4.b != 26 || a4.c != 27)
+    abort ();
+  check1 ();
+  check2 ();
+  if (f1a () != &a1 || f2a () != &a2 || f3a () != &a3 || f4a () != &a4)
+    abort ();
+  p = f5a (); if (p->a != 16 || p->b != 16 + 1 || p->c != 16 + 2)
+    abort ();
+  p = f6a (); if (p->a != 19 || p->b != 19 + 1 || p->c != 19 + 2)
+    abort ();
+  if (f7a () != &a2 || f8a () != &a4)
+    abort ();
+  p = f9a (); if (p->a != 28 || p->b != 28 + 1 || p->c != 28 + 2)
+    abort ();
+  p = f10a (); if (p->a != 31 || p->b != 31 + 1 || p->c != 31 + 2)
+    abort ();
+
+  exit (0);
+}
diff --git a/gcc/testsuite/gcc.dg/unroll-1.c b/gcc/testsuite/gcc.dg/unroll-1.c
new file mode 100644
index 0000000..1e2dd09
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/unroll-1.c
@@ -0,0 +1,26 @@
+/* PR optimization/8599 */
+/* { dg-do run } */
+/* { dg-options "-O2 -funroll-loops" } */
+/* { dg-options "-mtune=k6 -O2 -funroll-loops" { target i?86-*-* } } */
+
+extern void abort (void);
+
+int array[6] = { 1,2,3,4,5,6 };
+
+void foo()
+{
+  int i;
+
+  for (i = 0; i < 5; i++)
+    array[i] = 0;
+}
+
+int main()
+{
+  foo();
+  if (array[0] || array [1] || array[2] || array[3] || array[4])
+    abort ();
+  if (array[5] != 6)
+    abort ();
+  return 0;
+}