[Bug middle-end/71732] FAIL: gcc.dg/torture/pr71532.c at -O2 and above

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71732

--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> ---
Instruction is deleted here:

(gdb) p debug_rtx (uncast_insn)
(insn 55 50 91 2 (set (mem:SI (reg/f:SI 17 %r17 [101]) [0  S4 A32])
        (reg:SI 18 %r18 [102])) pr71532.c:29 42 {*pa.md:2184}
     (nil))
$40 = void
(gdb) bt
#0  delete_insn (uncast_insn=0xfd5bcf50) at ../../gcc/gcc/cfgrtl.c:126
#1  0x0062945c in delete_insn_and_edges (insn=0xfd5bcf50)
    at ../../gcc/gcc/cfgrtl.c:230
#2  0x00e298f8 in reload_cse_simplify (insn=0xfd5bcf50, testreg=0xfd5c2378)
    at ../../gcc/gcc/postreload.c:110
#3  0x00e29ea0 in reload_cse_regs_1 () at ../../gcc/gcc/postreload.c:215
#4  0x00e296d0 in reload_cse_regs (first=0xfd5b43a0)
    at ../../gcc/gcc/postreload.c:74
#5  0x00e33d3c in (anonymous namespace)::pass_postreload_cse::execute (
    this=0x2483b70, fun=0xfd4f8138) at ../../gcc/gcc/postreload.c:2342