[Issue 23814] [Codegen] Calling member function of extern(C++) class with multiple inheritance doesn't preserve the EBX register in some cases

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23814

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |razvan.nitu1305 at gmail.com

--- Comment #3 from RazvanN <razvan.nitu1305 at gmail.com> ---
What command line options are you using? I cannot reproduce this for neither 32
or 64 bit.

32 bit output:

00000000 <_ZN9MainClass5func4Ev>:
   0:   55                      push   ebp
   1:   8b ec                   mov    ebp,esp
   3:   83 ec 08                sub    esp,0x8
   6:   e8 00 00 00 00          call   b <_ZN9MainClass5func4Ev+0xb>
   b:   58                      pop    eax
   c:   05 02 00 00 00          add    eax,0x2
  11:   89 45 fc                mov    DWORD PTR [ebp-0x4],eax
  14:   8b 4d fc                mov    ecx,DWORD PTR [ebp-0x4]
  17:   8d 81 40 00 00 00       lea    eax,[ecx+0x40]
  1d:   c9                      leave  
  1e:   c3                      ret   


Does not use ebx.

64 bit output:

0000000000000000 <_ZN9MainClass5func4Ev>:
   0:   48 8d 05 00 00 00 00    lea    rax,[rip+0x0]        # 7
<_ZN9MainClass5func4Ev+0x7>
   7:   c3                      ret

Does not use rbx.

I don't think this issue is valid.

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