[gcc r13-6839] testsuite: Xfail gcc.dg/tree-ssa/ssa-fre-100.c for ! natural_alignment_32

[gcc r13-6839] testsuite: Xfail gcc.dg/tree-ssa/ssa-fre-100.c for ! natural_alignment_32

[Hans-Peter Nilsson]

https://gcc.gnu.org/g:3fbeff66684d95417646aaa22d0a8f1ec9786299

commit r13-6839-g3fbeff66684d95417646aaa22d0a8f1ec9786299
Author: Hans-Peter Nilsson <hp@axis.com>
Date:   Thu Mar 23 15:46:05 2023 +0100

    testsuite: Xfail gcc.dg/tree-ssa/ssa-fre-100.c for ! natural_alignment_32
    
    The test gcc.dg/tree-ssa/ssa-fre-100.c fails the
    scan-tree-dump-not fre1 "baz" for at least m68k-linux,
    pru-elf, and cris-elf according to posts on gcc-testresults.
    
    GCC requires int-size-alignment for a target to see through
    the "int *" dereference and perform value-numbering.  See
    comments in PR91419 and also the recent patch to
    gcc.dg/tree-ssa/pr100359.c.  This is a flaw in gcc rather
    than the target, so prefer an xfail rather than skipping
    the test.
    
            * gcc.dg/tree-ssa/ssa-fre-100.c: XFAIL for ! natural_alignment_32.

Diff:
---
 gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-100.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-100.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-100.c
index ead76548f3d..1b6a3a398a4 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-100.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-100.c
@@ -22,4 +22,4 @@ void foo (int *p, int n)
   while (--n);
 }
 
-/* { dg-final { scan-tree-dump-not "baz" "fre1" } } */
+/* { dg-final { scan-tree-dump-not "baz" "fre1" { xfail { ! natural_alignment_32 } } } } */