On 4/11/24 9:32 PM, Xiao Zeng wrote:
This patch would like to add new sub extension (aka Zfbfmin) to the -march= option. It introduces a new data type BF16. 1 The Zfbfmin extension depend on 'F', and the FLH, FSH, FMV.X.H, and FMV.H.X instructions as defined in the Zfh extension. 2 The Zfhmin extension includes the following instructions from the Zfh extension: FLH, FSH, FMV.X.H, FMV.H.X, FCVT.S.H, and FCVT.H.S. 3 Zfhmin extension depend on 'F'. 4 Simply put, just make Zfbfmin dependent on Zfhmin. Perhaps in the future, we could propose making the FLH, FSH, FMV.X.H, and FMV.H.X instructions an independent extension to achieve precise dependency relationships for the Zfbfmin. You can locate more information about Zfbfmin from below spec doc. <https://github.com/riscv/riscv-bfloat16/releases/download/v59042fc71c31a9bcb2f1957621c960ed36fac401/riscv-bfloat16.pdf> Below test are passed for this patch * The riscv fully regression test.
I wrote a suitable ChangeLog entry and pushed this patch to the trunk. THanks, jeff
