[Bug middle-end/47653] [4.6/4.7 Regression] gcc.c-torture/execute/930614-2.c FAILs with -fstack-check=generic -fgraphite-identity

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47653

--- Comment #10 from Sebastian Pop <spop at gcc dot gnu.org> 2011-07-26 18:48:19 UTC ---
Author: spop
Date: Tue Jul 26 18:48:08 2011
New Revision: 176802

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176802
Log:
Fix PR47653: do not handle loops using wrapping semantics in graphite

2011-07-26  Sebastian Pop  <sebastian.pop@amd.com>

    PR middle-end/47653
    * graphite-scop-detection.c (graphite_can_represent_loop): Discard
    loops using wrapping semantics.

    * gcc.dg/graphite/run-id-pr47653.c: New.
    * gcc.dg/graphite/interchange-3.c: Do not use unsigned types for
    induction variables.
    * gcc.dg/graphite/scop-16.c: Same.
    * gcc.dg/graphite/scop-17.c: Same.
    * gcc.dg/graphite/scop-21.c: Same.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/run-id-pr47653.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/graphite-scop-detection.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/graphite/interchange-3.c
    trunk/gcc/testsuite/gcc.dg/graphite/scop-16.c
    trunk/gcc/testsuite/gcc.dg/graphite/scop-17.c
    trunk/gcc/testsuite/gcc.dg/graphite/scop-21.c
    trunk/libgomp/testsuite/libgomp.graphite/force-parallel-1.c