[llvm] [X86] Asm modifier %a: add (%rip) for 64-bit static relocation model (PR #139040)

[Fangrui Song via llvm-commits]

MaskRay wrote:

> > In GCC,
> > ```
> > static int a;
> > asm("# %0" : : "i"(&a));
> > ```
> > 
> > 
> >     
> >       
> >     
> > 
> >       
> >     
> > 
> >     
> >   
> > lowers to `# a(%rip)` regardless of the PIC mode. This PR follow suits for ELF -fno-pic, matching ELF -fpic (asm-modifier-pic.ll) and Mach-O (which defaults to PIC).
> > Close #139001
> 
> Maybe we can use a better example in the description? This example does not use "a" modifier.

Updated!

https://github.com/llvm/llvm-project/pull/139040