[gcc r12-2648] gcc.dg/tree-ssa/ssa-dse-26.c: Skip on mmix-knuth-mmixware

[gcc r12-2648] gcc.dg/tree-ssa/ssa-dse-26.c: Skip on mmix-knuth-mmixware

[Hans-Peter Nilsson]

https://gcc.gnu.org/g:cfd60b39cdc576177c4a327897be55f3bf3f449e

commit r12-2648-gcfd60b39cdc576177c4a327897be55f3bf3f449e
Author: Hans-Peter Nilsson <hp@bitrange.com>
Date:   Sat Jul 31 02:08:36 2021 +0200

    gcc.dg/tree-ssa/ssa-dse-26.c: Skip on mmix-knuth-mmixware
    
    Commit r12-432, rewriting the dg-stuff, reverted the
    adjustment for mmix-knuth-mmixware that I added in r11-2335.
    (See those commits for context.)
    
    Hopefully this variant will age better, just skipping it
    with a trivial extra line less prone to pile-on.  (Not much
    is won by covering this generic case for MMIX too; might as
    well skip it.)
    
    Beware that the dg-skip-if text can't say
    "temporary variables are not x and y but x::3 and y::4"
    because that leads to (on one line):
    
    ERROR: gcc.dg/tree-ssa/ssa-dse-26.c: can't set "{temporary
     variables are not x and y but x::3 and y::4} {
     mmix-knuth-mmixware }": parent namespace doesn't exist for
     " dg-skip-if 4 "temporary variables are not x and y but
     x::3 and y::4" { mmix-knuth-mmixware } "
    
    gcc/testsuite:
            * gcc.dg/tree-ssa/ssa-dse-26.c: Skip on mmix-knuth-mmixware.

Diff:
---
 gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c
index 5eabfb464d3..e3c33f49ef6 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c
@@ -1,6 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-dse1-details -fno-short-enums -fno-tree-fre" } */
 /* { dg-skip-if "we want a BIT_FIELD_REF from fold_truth_andor" { ! lp64 } } */
+/* { dg-skip-if "temporary variable names are not x and y" { mmix-knuth-mmixware } } */
 
 enum constraint_expr_type
 {