Re: [PATCH] RISC-V: Support vfwnmacc/vfwmsac/vfwnmsac combine lowering

[Jeff Law via Gcc-patches]

On 6/28/23 16:10, 钟居哲 wrote:
Sure.

https://godbolt.org/z/8857KzTno <https://godbolt.org/z/8857KzTno>

Failed to match this instruction:
(set (reg:VNx2DF 134 [ vect__31.47 ])
     (fma:VNx2DF (neg:VNx2DF (float_extend:VNx2DF (reg:VNx2SF 136 [ 
vect__28.44 ])))
         (reg:VNx2DF 150 [ vect__8.12 ])
         (reg:VNx2DF 171 [ vect__29.45 ])))
Please attach the full dump.  I would expect to see additional attempts 
with more operands replaced.

jeff