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Re: [PATCH 1/2] [powerpc] add 'volatile' to asm
* Paul A. Clarke:
> diff --git a/sysdeps/powerpc/fpu/fenv_libc.h b/sysdeps/powerpc/fpu/fenv_libc.h
> index f8dd1b7..f66bf24 100644
> --- a/sysdeps/powerpc/fpu/fenv_libc.h
> +++ b/sysdeps/powerpc/fpu/fenv_libc.h
> @@ -56,9 +56,9 @@ extern const fenv_t *__fe_mask_env (void) attribute_hidden;
> #define relax_fenv_state() \
> do { \
> if (GLRO(dl_hwcap) & PPC_FEATURE_HAS_DFP) \
> - asm (".machine push; .machine \"power6\"; " \
> + asm volatile (".machine push; .machine \"power6\"; " \
> "mtfsfi 7,0,1; .machine pop"); \
> - asm ("mtfsfi 7,0"); \
> + asm volatile ("mtfsfi 7,0"); \
> } while(0)
I think this change is a no-op because asm statements without inputs and
outputs (“Basic Asm”) are implicitly volatile. Are you adding these
just for consistency?
Thanks,
Florian