[PATCH] gas: add --reloc-section-sym={all, internal, none} option for ELF

[Jan Beulich]

On 16.02.2026 08:20, Fangrui Song wrote:
> When generating relocations for non-ifunc local symbols that satisfies
> several conditions, GAS converts them to reference the section symbol
> (STT_SECTION) instead, folding the original symbol's offset into the
> addend.  This allows the original local symbol to be omitted from
> .symtab, but the STT_SECTION symbol itself must be present, so the
> conversion saves .symtab entries only when a section has more than one
> local symbol referenced by relocations.
> 
> Add --reloc-use-section-sym to control this conversion:

Besides, as Maciej has already pointed out, this one still needing updating, ...

> @@ -523,7 +527,8 @@ parse_args (int * pargc, char *** pargv)
>        OPTION_SFRAME_3,
>        OPTION_SCFI,
>        OPTION_INFO,
> -      OPTION_NOINFO
> +      OPTION_NOINFO,
> +      OPTION_RELOC_USE_SECTION_SYM

... this also should lose the USE, as should ...

> @@ -1043,6 +1049,18 @@ This program has absolutely no warranty.\n"));
>  	  flag_sectname_subst = 1;
>  	  break;
>  
> +	case OPTION_RELOC_USE_SECTION_SYM:
> +	  if (strcasecmp (optarg, "all") == 0)
> +	    flag_reloc_use_section_sym = reloc_use_section_sym_all;

... the flag variable, the enum, and the enumerators.

> --- /dev/null
> +++ b/gas/testsuite/gas/i386/reloc-section-sym.s
> @@ -0,0 +1,14 @@
> +.text
> +  nop
> +named_local:
> +  nop
> +.Ltemp:
> +  nop
> +
> +.section .text1,"ax"
> +  call named_local
> +  call .Ltemp
> +
> +.data
> +.quad named_local + 16
> +.quad .Ltemp + 16

Please can all directives be indented by at least one position?

Okay with these adjustments.

Jan