RE: [PATCH v2] MIPS: Only use current_stack_pointer on GCC

[David Laight]

From: Kees Cook
> Sent: 09 March 2022 22:10
> 
> Unfortunately, Clang did not have support for "sp" as a global register
> definition, and was crashing after the addition of current_stack_pointer.
> This has been fixed in Clang 15, but earlier Clang versions need to
                               ^^ 14
> avoid this code, so add a versioned test and revert back to the
> open-coded asm instances. Fixes Clang build error:
> 
> fatal error: error in backend: Invalid register name global variable

	David

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