[llvm] [llvm-mc][AsmParser] Fix Source location for undefined directional labels. (PR #214654)

[via llvm-commits]

zhangweize9-cyber wrote:

Hi, @lenary,  

All CI tests have passed! Of all the test cases, the two files that previously failed `inline-asm-s-constraint.ll` and `inline-asm-mem-constraint.ll` have now passed successfully. In this update, I added an additional step to the existing process: I used `Sym && Sym->isTemporary()` to restrict the scope to temporary symbols, in order to capture error information more accurately.  

Could you please take a moment to review my revisions? If you’re satisfied with these changes, I’ll combine these two submissions into one.  

Thanks for your time and guidance!  

https://github.com/llvm/llvm-project/pull/214654