re PR target/35982 (ICE while building mplayer on ppc with -O3 -ffast-math -mcpu=970)

	PR tree-optimization/35982
	* tree-vect-analyze.c (vect_check_interleaving): Check that the
	interleaved data-refs are of the same type.

From-SVN: r134624

gcc/ChangeLog

+2008-04-24  Ira Rosen  <irar@il.ibm.com>
+
+	PR tree-optimization/35982
+	* tree-vect-analyze.c (vect_check_interleaving): Check that the
+	interleaved data-refs are of the same type.
+
 2008-04-24  Danny Smith  <dannysmith@users.net>
 
 	* c-format.c (check_format_info_main): Use strncmp rather than a magic prefix

gcc/testsuite/ChangeLog

+2008-04-24  Ira Rosen  <irar@il.ibm.com>
+
+	PR tree-optimization/35982
+	* gcc.dg/vect/fast-math-pr35982.c: New.
+
 2008-04-24  Danny Smith  <dannysmith@users.net>
 
 	* gcc.dg/format/ms-warnI64-1.c: New file.

gcc/testsuite/gcc.dg/vect/fast-math-pr35982.c

+/* { dg-do compile } */
+/* { dg-require-effective-target vect_float } */
+/* { dg-require-effective-target vect_int } */
+
+struct mem 
+{
+  float avg;
+  int len;
+};
+
+float method2_int16 (struct mem *mem)
+{
+  int i;
+  float avg;
+
+  for (i = 0; i < 100; ++i)
+     avg += mem[i].avg * (float) mem[i].len;
+
+  return avg;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_extract_even_odd  } } } */
+/* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" { xfail vect_extract_even_odd  } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+

gcc/tree-vect-analyze.c

@@ -1060,7 +1060,9 @@ vect_check_interleaving (struct data_reference *dra,
   type_size_b = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (DR_REF (drb))));
 
   if (type_size_a != type_size_b
-      || tree_int_cst_compare (DR_STEP (dra), DR_STEP (drb)))
+      || tree_int_cst_compare (DR_STEP (dra), DR_STEP (drb))
+      || !types_compatible_p (TREE_TYPE (DR_REF (dra)), 
+                              TREE_TYPE (DR_REF (drb))))
     return;
 
   init_a = TREE_INT_CST_LOW (DR_INIT (dra));