[clang] [clang] Add GCC-compatible code model names for sparc64 (PR #79485)

[Rainer Orth via cfe-commits]

rorth wrote:

> `embmedany` is already rejected by the driver at the moment:
> 
> ```
> error: unsupported argument 'embmedany' to option '-mcmodel=' for target 'sparc64'
> ```
Seems sensible indeed.
> On the testing issue, however, would compiling LLVM with each of the code models + running codegen tests be enough to at least exercise the relevant parts (and see if there's still issues, etc.)?

I'd run 2-stage builds/tests (either with the existing machinery or by building LLVM twice explicitly: once with an external compiler and then again with the just-built one).


https://github.com/llvm/llvm-project/pull/79485