[Bug target/71161] [7 Regression] Lots of ASAN and libgo runtime FAILs after r236090

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71161

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
I don't see anything wrong btw. the following contains all esp modifications
and indirect calls.

00115d40 <dl_iterate_phdr>:
  115d40:       55                      push   %ebp
  115d41:       89 e5                   mov    %esp,%ebp
  115d43:       57                      push   %edi
  115d44:       56                      push   %esi
  115d45:       53                      push   %ebx
  115d46:       e8 14 0d f0 ff          call   16a5f <__i686.get_pc_thunk.bx>
  115d4b:       81 c3 b5 92 05 00       add    $0x592b5,%ebx
  115d51:       83 ec 50                sub    $0x50,%esp
  115d54:       8b 93 c8 fe ff ff       mov    -0x138(%ebx),%edx
  115d5a:       8d 82 c4 04 00 00       lea    0x4c4(%edx),%eax
  115d60:       89 04 24                mov    %eax,(%esp)
  115d63:       ff 92 e0 07 00 00       call   *0x7e0(%edx)
...
  115e2b:       c7 44 24 04 28 00 00    movl   $0x28,0x4(%esp)
  115e32:       00 
  115e33:       89 3c 24                mov    %edi,(%esp)
  115e36:       89 4c 24 08             mov    %ecx,0x8(%esp)
  115e3a:       ff 55 08                call   *0x8(%ebp)
...
  115ee8:       89 04 24                mov    %eax,(%esp)
  115eeb:       ff 92 e4 07 00 00       call   *0x7e4(%edx)
  115ef1:       8b 45 b4                mov    -0x4c(%ebp),%eax
  115ef4:       83 c4 50                add    $0x50,%esp
  115ef7:       5b                      pop    %ebx
  115ef8:       5e                      pop    %esi
  115ef9:       5f                      pop    %edi
  115efa:       5d                      pop    %ebp
  115efb:       c3                      ret    

so unless the locking stuff (I'm looking at head sources, the above is old
assembly) misaligns the stack the above is fine.