Re: [PATCH] x86/cpufeature: guard asm_volatile_goto usage with CC_HAVE_ASM_GOTO

Peter Zijlstra
2018-04-10T21:07:25Z

On Tue, Apr 10, 2018 at 01:42:59PM -0700, Yonghong Song wrote:
> Commit d0266046ad54 ("x86: Remove FAST_FEATURE_TESTS")
> removed X86_FAST_FEATURE_TESTS and make macro static_cpu_has() always
> use __always_inline function _static_cpu_has() funciton.
> The static_cpu_has() uses gcc feature asm_volatile_goto construct,
> which is not supported by clang.

There will be more unconditional asm-goto usage, clang is in the process
of growing asm-goto.