[Bug middle-end/45230] gcc.c-torture/execute/strncmp-1.c ICEs with -fgraphite-identity

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45230

--- Comment #21 from Jack Howarth <howarth at nitro dot med.uc.edu> 2010-12-08 02:15:28 UTC ---
(In reply to comment #20)
> Patch here:
> http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00629.html

The proposed patch applied to r167573 as well as...

Index: opts.c
===================================================================
--- opts.c      (revision 167318)
+++ opts.c      (working copy)
@@ -462,6 +462,9 @@
     { OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },

     /* -O2 optimizations.  */
+#ifdef HAVE_cloog
+    { OPT_LEVELS_2_PLUS, OPT_fgraphite_identity, NULL, 1 },
+#endif
     { OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },

eliminates the ICEs compiling the gcc.c-torture/execute/strncmp-1.c testcase on
x86_64-apple-darwin10.