Re: [PATCH v3 0/3] RISC-V: Combine vec_duplicate + vsadd.vv to vsadd.vx on GR2VR cost

This patch would like to introduce the combine of vec_dup + vsadd.vv into vsadd.vx on the cost value of GR2VR. The late-combine will take place if the cost of GR2VR is zero, or reject the combine if non-zero like 1, 2, 15 in test. There will be two cases for the combine: OK. -- Regards Robin

[PATCH v3 0/3] RISC-V: Combine vec_duplicate + vsadd.vv to vsadd.vx on GR2VR cost

From: Pan Li This patch would like to introduce the combine of vec_dup + vsadd.vv into vsadd.vx on the cost value of GR2VR. The late-combine will take place if the cost of GR2VR is zero, or reject the combine if non-zero like 1, 2, 15 in test. There will be two cases for the combine: Case 0: