tree-sra.c (sra_modify_expr): Generate new memory accesses with same alias type…

tree-sra.c (sra_modify_expr): Generate new memory accesses with same alias type as the original statement.

2014-04-28  Martin Jambor  <mjambor@suse.cz>

	* tree-sra.c (sra_modify_expr): Generate new memory accesses with
	same alias type as the original statement.
	(subreplacement_assignment_data): New type.
	(handle_unscalarized_data_in_subtree): New type of parameter,
	generate new memory accesses with same alias type as the original
	statement.
	(load_assign_lhs_subreplacements): Likewise.
	(sra_modify_constructor_assign): Generate new memory accesses with
	same alias type as the original statement.

testsuite/
        * gcc.dg/tree-ssa/sra-14.c: New test.

From-SVN: r209868

gcc/ChangeLog

+2014-04-28  Martin Jambor  <mjambor@suse.cz>
+
+	* tree-sra.c (sra_modify_expr): Generate new memory accesses with
+	same alias type as the original statement.
+	(subreplacement_assignment_data): New type.
+	(handle_unscalarized_data_in_subtree): New type of parameter,
+	generate new memory accesses with same alias type as the original
+	statement.
+	(load_assign_lhs_subreplacements): Likewise.
+	(sra_modify_constructor_assign): Generate new memory accesses with
+	same alias type as the original statement.
+
 2014-04-28  Richard Biener  <rguenther@suse.de>
 
 	* tree-pass.h (TODO_verify_il): Define.

gcc/testsuite/ChangeLog

+2014-04-28  Martin Jambor  <mjambor@suse.cz>
+
+        * gcc.dg/tree-ssa/sra-14.c: New test.
+
 2014-04-28  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/60092

gcc/testsuite/gcc.dg/tree-ssa/sra-14.c

+/* { dg-do run } */
+/* { dg-options "-O1" } */
+
+struct S
+{
+  int i, j;
+};
+
+struct Z
+{
+  struct S d, s;
+};
+
+struct S __attribute__ ((noinline, noclone))
+get_s (void)
+{
+  struct S s;
+  s.i = 5;
+  s.j = 6;
+
+  return s;
+}
+
+struct S __attribute__ ((noinline, noclone))
+get_d (void)
+{
+  struct S d;
+  d.i = 0;
+  d.j = 0;
+
+  return d;
+}
+
+int __attribute__ ((noinline, noclone))
+get_c (void)
+{
+  return 1;
+}
+
+int __attribute__ ((noinline, noclone))
+my_nop (int i)
+{
+  return i;
+}
+
+int __attribute__ ((noinline, noclone))
+foo (void)
+{
+  struct Z z;
+  int i, c = get_c ();
+
+  z.d = get_d ();
+  z.s = get_s ();
+
+  for (i = 0; i < c; i++)
+    {
+      z.s.i = my_nop (z.s.i);
+      z.s.j = my_nop (z.s.j);
+    }
+
+  return z.s.i + z.s.j;
+}
+
+int main (int argc, char *argv[])
+{
+  if (foo () != 11)
+    __builtin_abort ();
+  return 0;
+}
+