[Bug gas/25380] Support section linkage 'unique' (multiple sections with the same name)

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25380

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2020-02-01
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Fangrui Song from comment #0)
> Clang's integrated assembler supports multiple section with the same name.
> 
> % cat a.s
> .section        .text,"ax",@progbits,unique,1
> nop
> .section        .text,"ax",@progbits,unique,2
> nop

How does it work together with comdat group like

        .section .text.bar,"axG",@progbits,bar,comdat
        .globl  bar
        .type   bar, @function
bar:
         ret

Section name is used to specify sections in assembly codes.  Will


       .section .text,N,"axG",@progbits,bar,comdat
        .globl  bar
        .type   bar, @function
bar:
         ret

and

       .section .text,N,"ax",@progbits
        .globl  bar
        .type   bar, @function
bar:
         ret

work better?  .section .text,N can be used to identify the Nth .text
section, which may or may not belong to a comdat group.

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