[hardware] 🐛 Consider LMUL when deciding if to reshuffle vd

pulp-platform · Jun 18, 2024 · 17cab12 · 17cab12
1 parent 99950e9
commit 17cab12
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hardware/src/ara_dispatcher.sv b/hardware/src/ara_dispatcher.sv
@@ -3195,7 +3195,7 @@ module ara_dispatcher import ara_pkg::*; import rvv_pkg::*; #(
         // Optimization: reshuffle vd only if we are not overwriting the whole vector register!
         reshuffle_req_d = {ara_req_d.use_vs1 && (ara_req_d.eew_vs1    != eew_q[ara_req_d.vs1]) && eew_valid_q[ara_req_d.vs1] && in_lane_op,
                            ara_req_d.use_vs2 && (ara_req_d.eew_vs2    != eew_q[ara_req_d.vs2]) && eew_valid_q[ara_req_d.vs2] && in_lane_op,
-                           ara_req_d.use_vd  && (ara_req_d.vtype.vsew != eew_q[ara_req_d.vd ]) && eew_valid_q[ara_req_d.vd ] && csr_vl_q != (VLENB >> ara_req_d.vtype.vsew)};
+                           ara_req_d.use_vd  && (ara_req_d.vtype.vsew != eew_q[ara_req_d.vd ]) && eew_valid_q[ara_req_d.vd ] && csr_vl_q != ((VLENB << ara_req_d.emul[1:0]) >> ara_req_d.vtype.vsew)};
         // Mask out requests if they refer to the same register!
         reshuffle_req_d &= {
           (insn.varith_type.rs1 != insn.varith_type.rs2) && (insn.varith_type.rs1 != insn.varith_type.rd),