[Bug bootstrap/100373] [12 Regression] Darwin, Compare-debug fail after r12-248-gb58dc0b803057

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100373

--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
master @r12-438 doesn't fail compare debug (maybe some later change masks this)
 I think this will reproduce on a stage 1..

reduced:

a;
_Thread_local b;
c() {
  long d = b;
  a = 0;
  b = 0;
}

cc1 -fpreprocessed gmp_op.i -O2 -gtoggle -quiet -o a.s
cc1 -fpreprocessed gmp_op.i -O2 -quiet -o b.s
...

a.o.stripped:
(__TEXT,__text) section
_c:
0000000000000000        subq    $0x8, %rsp
0000000000000004        leaq    (%rip), %rdi
000000000000000b        callq   0x10
0000000000000010        movl    $0x0, -0x4(%rip)
000000000000001a        movl    $0x0, (%rax)
0000000000000020        addq    $0x8, %rsp
0000000000000024        retq


b.o.stripped:
(__TEXT,__text) section
_c:
0000000000000000        subq    $0x8, %rsp
0000000000000004        leaq    (%rip), %rdi
000000000000000b        movl    $0x0, -0x4(%rip)
0000000000000015        callq   0x1a
000000000000001a        movl    $0x0, (%rax)
0000000000000020        addq    $0x8, %rsp
0000000000000024        retq