[PATCH] gas: fold symbol table entries generated for .startof.() / .sizeof.()

[Nick Clifton]

Hi Jan,

> gas/
> 2021-06-XX  Jan Beulich  <jbeulich@suse.com>
> 
> 	* expr.c (symbol_lookup_or_make): New.
> 	(operand): Use it.
> 	* testsuite/gas/elf/startof.s, testsuite/gas/elf/startof.d: New.
> 	* testsuite/gas/elf/elf.exp: Run new test.

Approved - please apply.

Cheers
   Nick
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