re PR target/52129 (wrong code to pass parameters to tail call function)

	PR target/52129
	* calls.c (mem_overlaps_already_clobbered_arg_p): If val is
	CONST_INT_P, subtract resp. add crtl->args.pretend_args_size to it.

	* gcc.c-torture/execute/pr52129.c: New test.

From-SVN: r183933

gcc/ChangeLog

+2012-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/52129
+	* calls.c (mem_overlaps_already_clobbered_arg_p): If val is
+	CONST_INT_P, subtract resp. add crtl->args.pretend_args_size to it.
+
 2012-02-06  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	PR c++/48680

gcc/calls.c

@@ -1808,6 +1808,11 @@ mem_overlaps_already_clobbered_arg_p (rtx addr, unsigned HOST_WIDE_INT size)
     return true;
   else
     i = INTVAL (val);
+#ifdef STACK_GROWS_DOWNWARD
+  i -= crtl->args.pretend_args_size;
+#else
+  i += crtl->args.pretend_args_size;
+#endif
 
 #ifdef ARGS_GROW_DOWNWARD
   i = -i - size;

gcc/testsuite/ChangeLog

+2012-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/52129
+	* gcc.c-torture/execute/pr52129.c: New test.
+
 2012-02-06  Andrey Belevantsev  <abel@ispras.ru>
 
 	* gcc.dg/pr48374.c: Actually add the test I forgot 

gcc/testsuite/gcc.c-torture/execute/pr52129.c

+/* PR target/52129 */
+
+extern void abort (void);
+struct S { void *p; unsigned int q; };
+struct T { char a[64]; char b[64]; } t;
+
+__attribute__((noinline, noclone)) int
+foo (void *x, struct S s, void *y, void *z)
+{
+  if (x != &t.a[2] || s.p != &t.b[5] || s.q != 27 || y != &t.a[17] || z != &t.b[17])
+    abort ();
+  return 29;
+}
+
+__attribute__((noinline, noclone)) int
+bar (void *x, void *y, void *z, struct S s, int t, struct T *u)
+{
+  return foo (x, s, &u->a[t], &u->b[t]);
+}
+
+int
+main ()
+{
+  struct S s = { &t.b[5], 27 };
+  if (bar (&t.a[2], (void *) 0, (void *) 0, s, 17, &t) != 29)
+    abort ();
+  return 0;
+}