[COMMITTED] [PATCH v2] RISC-V: Add Zfbfmin extension

["Xiao Zeng" <zengxiao@eswincomputing.com>]

2024-06-04 04:30  Jeff Law <jeffreyalaw@gmail.com> wrote:
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>On 6/1/24 1:45 AM, Xiao Zeng wrote:
>> 1 In the previous patch, the libcall for BF16 was implemented:
>> <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=8c7cee80eb50792e57d514be1418c453ddd1073e>
>>
>> 2 Riscv provides Zfbfmin extension, which completes the "Scalar BF16 Converts":
>> <https://github.com/riscv/riscv-bfloat16/blob/main/doc/riscv-bfloat16-zfbfmin.adoc>
>>
>> 3 Implemented replacing libcall with Zfbfmin extension instruction.
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>> 4 Reused previous testcases in:
>> <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=8c7cee80eb50792e57d514be1418c453ddd1073e>
>> gcc/ChangeLog:
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>> * config/riscv/iterators.md: Add mode_iterator between
>> floating-point modes and BFmode.
>> * config/riscv/riscv.cc (riscv_output_move): Handle BFmode move
>> for zfbfmin.
>> * config/riscv/riscv.md (trunc<mode>bf2): New pattern for BFmode.
>> (extendbfsf2): Dotto.
>> (*movhf_hardfloat): Add BFmode.
>> (*mov<mode>_hardfloat): Dotto.
>>
>> gcc/testsuite/ChangeLog:
>>
>> * gcc.target/riscv/zfbfmin-bf16_arithmetic.c: New test.
>> * gcc.target/riscv/zfbfmin-bf16_comparison.c: New test.
>> * gcc.target/riscv/zfbfmin-bf16_float_libcall_convert.c: New test.
>> * gcc.target/riscv/zfbfmin-bf16_integer_libcall_convert.c: New test.
>OK for the trunk.  Thanks! 
Thank you, the changes have been pushed to the trunk.
>
>jeff
Thanks
Xiao Zeng