[BUG] Unexpected Behavior in M Extension Instructions with Identical Operands

Created by: youzi27

Is there an existing CVA6 bug for this?

• I have searched the existing bug issues

Bug Description

When executing instructions from the M extension (such as div a0, a0, a0, divu a0, a0, a0, etc.) and rd = rs1 = rs2 = a0, the cva6 cannot operate normally to obtain the expected value.