[Bug testsuite/97426] [11 regression] new test case gcc.dg/ipa/modref-1.c fails

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97426

--- Comment #2 from seurer at gcc dot gnu.org ---
g:10744da3452dac48cfa54d4480c269aac56421fa, r11-3909

The above partly fixes this but leaves at least one error:

make  -k check-gcc RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/modref-4.c"
FAIL: gcc.dg/tree-ssa/modref-4.c scan-tree-dump modref1 "return 0"
# of expected passes            3
# of unexpected failures        1