1# One of the rule on restricted sequence is consecutive IU instruction 2# IU: MUL, MAC, MACS, MSUB, MSUBS (a) 3# IU: MULHXpp, MULX2H, MUL2H (b) 4# This means that instructions in group (a) and in (b) should not be executed 5# in IU in consecutive cycles in the order (a)->(b). It does neither prohibit 6# executions in the reverse order (b)-> (a) nor consecutive execution of 7# group (a)->(a) or (b)->(b) 8 9 mulx2h r5,r6,r7 <- mulx2h r2,r3,r4 10 nop || mulx2h r8,r9,r10 11 nop || mulx2h r11,r12,r13 12 mulx2h r14,r15,r16 13 mulx2h r17,r18,r19 14 mulx2h r23,r24,r25 <- mulx2h r20,r21,r22 15 mul r29,r30,r31 <- mulx2h r26,r27,r28 16 mul r5, r6, r7 <- mul r2, r3, r4 17 mulx2h r11, r12, r13 <- mulx2h r8, r9, r10 18 mulx2h r17, r18, r19 <- mul r14, r15, r16 19 mul r23, r24, r25 <- mulx2h r20, r21, r22 20