On Wed, Nov 18, 2020 at 5:29 AM Jim Wilson <[email protected]> wrote:
>
> On Thu, Nov 12, 2020 at 11:28 PM Kito Cheng <[email protected]> wrote:
>>
>> +#ifndef HAVE_AS_MARCH_ZIFENCE
>> + /* Skip since older binutils don't recognize zifencei,
>> + we mad a mistake that is binutils 2.35 support zicsr but not support
>> + zifencei. */
>> + skip_zifencei = true;
>> +#endif
>
>
> I'd suggest something like "Skip since older binutils doesn't recognize
> zifencei, we made a mistake in that binutils 2.35 supports zicsr but not
> zifencei."
Thanks for suggestions :)
>>
>> diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
>> index 172c7ca7c98..9dec5415eab 100644
>> --- a/gcc/config/riscv/riscv.h
>> +++ b/gcc/config/riscv/riscv.h
>> @@ -70,13 +70,20 @@ extern const char *riscv_default_mtune (int argc, const
>> char **argv);
>> #define TARGET_64BIT (__riscv_xlen == 64)
>> #endif /* IN_LIBGCC2 */
>>
>> +#ifdef HAVE_AS_MISA_SPEC
>> +#define ASM_MISA_SPEC ""
>> +#else
>> +#define ASM_MISA_SPEC "%{misa-spec=*}"
>> +#endif
>
>
> This is backwards. We do want to pass -misa-spec to the assembler if it
> supports it. Or maybe you meant ifndef?
Oh, it should be ifndef here.
