[Bug bootstrap/63995] Bootstrap error with -mmpx -fcheck-pointer-bounds

["enkovich.gnu at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63995

--- Comment #6 from Ilya Enkovich <enkovich.gnu at gmail dot com> ---
For attached -g0 problem reproducer:

>gcc pr63995-2.c -c -O2 -mmpx -fcheck-pointer-bounds -g -o 1.o
>gcc pr63995-2.c -c -O2 -mmpx -fcheck-pointer-bounds -g0 -o 2.o
>objdump_pl -d 1.o >1.dump
>objdump_pl -d 2.o >2.dump
>diff 1.dump 2.dump
2c2
< 1.o:     file format elf64-x86-64
---
> 2.o:     file format elf64-x86-64
19,22c19,22
<   2b: b8 03 00 00 00          mov    $0x3,%eax
<   30: f3 0f 1b 1c 07          bndmk  (%rdi,%rax,1),%bnd3
<   35: c7 44 24 10 ff ff ff    movl   $0xffffffff,0x10(%rsp)
<   3c: ff
---
>   2b: c7 44 24 10 ff ff ff    movl   $0xffffffff,0x10(%rsp)
>   32: ff
>   33: b8 03 00 00 00          mov    $0x3,%eax
>   38: f3 0f 1b 1c 07          bndmk  (%rdi,%rax,1),%bnd3

Different instructions order is caused by different GIMPLE statements order
after chkpopt pass.  Will prepare a fix for that.