[PATCH, testsuite, ARM] change XFAIL to pass for ARM on a case testing tree-ssa-dom

[Jiangning Liu]

Test case gcc.dg/tree-ssa/20040204-1.c can pass for -O1 after Richard
Guenther <rguent...@suse.de> fixed something in tree-ssa-dom. The
"link_error" should be optimized away for ARM targets as well.

The patch is:

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20040204-1.c
b/gcc/testsuite/gcc.dg/tree-ssa/20040204-1.c
index 45e44a1..470b585 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/20040204-1.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20040204-1.c
@@ -33,5 +33,5 @@ void test55 (int x, int y)
    that the && should be emitted (based on BRANCH_COST).  Fix this
    by teaching dom to look through && and register all components
    as true.  */
-/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" { xfail { !
"alpha*-*-* powerpc*-*-* cris-*-* crisv32-*-* hppa*-*-* i?86-*-* mmix-*-*
mips*-*-* m68k*-*-* moxie-*-* sparc*-*-* spu-*-* x86_64-*-*" } } } } */
+/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" { xfail { !
"alpha*-*-* arm*-*-* powerpc*-*-* cris-*-* crisv32-*-* hppa*-*-* i?86-*-*
mmix-*-* mips*-*-* m68k*-*-* moxie-*-* sparc*-*-* spu-*-* x86_64-*-*" } } }
} */
 /* { dg-final { cleanup-tree-dump "optimized" } } */

gcc/testsuite/ChangeLog:

2011-08-26  Jiangning Liu  <jiangning....@arm.com>

       PR tree-optimization/46021
       * gcc.dg/tree-ssa/20040204-1.c: Don't XFAIL on arm*-*-*.

Thanks,
-Jiangning