Re: [Xen-devel] [PATCH] x86/asm: Use ASM_FLAG_OUT() to simplify atomic and bitop stubs

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 15/02/17 14:22, Andrew Cooper wrote:
> bitops.h cannot include asm_defns.h, because the static inlines in cpumasks.h
> result in forward declarations of the bitops.h contents.  Move ASM_FLAG_OUT()
> to a new asm/compiler.h to compensate.
>
> While making changes, switch bool_t to bool and use named asm parameters.
>
> No (intended) functional change.  Without GCC flags, the disassembly is
> identical before and after this patch.  With GCC flags however, this patch
> seems to cause GCC to make instruction scheduling decisions.

This is supposed to read "make better instruction...".

~Andrew

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