Alignement to PR openhwgroup#970 for User Manual update of clipr/clip…

…ur behavior. Signed-off-by: Pascal Gouedo <[email protected]>
pascalgouedo · Mar 25, 2024 · 7a843ea · 7a843ea
1 parent bfeff28
commit 7a843ea
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/rtl/cv32e40p_id_stage.sv b/rtl/cv32e40p_id_stage.sv
@@ -1516,7 +1516,11 @@ module cv32e40p_id_stage
         if (alu_en) begin
           alu_operator_ex_o   <= alu_operator;
           alu_operand_a_ex_o  <= alu_operand_a;
-          alu_operand_b_ex_o  <= alu_operand_b;
+          if (alu_op_b_mux_sel == OP_B_REGB_OR_FWD && (alu_operator == ALU_CLIP || alu_operator == ALU_CLIPU)) begin
+            alu_operand_b_ex_o <= {1'b0, alu_operand_b[30:0]};
+          end else begin
+            alu_operand_b_ex_o <= alu_operand_b;
+          end
           alu_operand_c_ex_o  <= alu_operand_c;
           bmask_a_ex_o        <= bmask_a_id;
           bmask_b_ex_o        <= bmask_b_id;