Remove 32-bit targets from X86_proc.system

[omasanori]

This cleans up X86_proc a bit as 32-bit targets are no longer supported by asmcomp.

[dra27]

Solaris and Haiku are both 64-bit, so don't want to be removed (I'm afraid that means the code simplification goes). FWIW, a follow-on to #12405 is to move X86_proc.system into ocamlcommon and use it instead of strings throughout the distribution.

[omasanori]

Thank you for your suggestions, @dra27! I have updated the patch.

[omasanori]

FWIW, a follow-on to #12405 is to move X86_proc.system into ocamlcommon and use it instead of strings throughout the distribution.

Sounds reasonable, but I have not yet understand how compilerlibs/Makefile.compilerlibs works. Can I postpone it?

[omasanori]

Well, so, does removing them at this moment not make sense as they will be revived for a common component used by both the byte code compiler and the native code compiler?

[dra27]

Can I postpone it?

Yes, indeed - sorry, I didn't mean to imply it had to be done here 🙂

[dra27]

Thanks for the edits - even if the type does end up moved into ocamlcommon, I think this is a nice clean-up to do now, especially as the system values it's matching for some of those 32-bit architectures will wrong when #12405 goes in.

[dra27]

Thank you!