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Date:   Wed, 9 Mar 2022 22:44:52 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Kees Cook' <>,
        Thomas Bogendoerfer <>
CC:     Nathan Chancellor <>,
        Marc Zyngier <>,
        Guenter Roeck <>,
        Yanteng Si <>,
        "" <>,
        Nick Desaulniers <>,
        Mark Rutland <>,
        "" <>,
        "" <>,
        "" <>
Subject: RE: [PATCH v2] MIPS: Only use current_stack_pointer on GCC

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


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