Initial source code:
if( send_u >= 0){ SEND(send_u + 6) send_u = -1; }//if
generates following object code:
00C11A9E D7000000 EXTS #0x0000,#1 00C11AA2 F2F418FD MOV R4,DPP3:0x3D18 00C11AA6 6D13 JMPR CC_N,0xC11ACE 46: SEND(send_u + 6) 00C11AA8 F054 MOV R5,R4 00C11AAA 5C24 SHL R4,#0x02 00C11AAC 2045 SUB R4,R5 00C11AAE 5C24 SHL R4,#0x02 00C11AB0 2045 SUB R4,R5 00C11AB2 5C14 SHL R4,#0x01 00C11AB4 E6F88440 MOV R8,#0x4084 00C11AB8 0084 ADD R8,R4 00C11ABA E6F40002 MOV R4,#0x0200 00C11ABE E6F5C000 MOV R5,#0x00C0 00C11AC2 DAC14417 CALLS ?C_SCALLI(0xC11744)
When I add to the initial source code label:
if( send_u >= 0){ some_label_: SEND(send_u + 6) send_u = -1; }//if
compiler generates another object code:
00C11A9E D7000000 EXTS #0x0000,#1 00C11AA2 F2F418FD MOV R4,DPP3:0x3D18 00C11AA6 6D17 JMPR CC_N,0xC11AD6 45: fpp_cycle_3_2:; 46: SEND(send_u + 6) 00C11AA8 D7000000 EXTS #0x0000,#1 00C11AAC F2F418FD MOV R4,DPP3:0x3D18 00C11AB0 F054 MOV R5,R4 00C11AB2 5C24 SHL R4,#0x02 00C11AB4 2045 SUB R4,R5 00C11AB6 5C24 SHL R4,#0x02 00C11AB8 2045 SUB R4,R5 00C11ABA 5C14 SHL R4,#0x01 00C11ABC E6F88440 MOV R8,#0x4084 00C11AC0 0084 ADD R8,R4 00C11AC2 E6F40002 MOV R4,#0x0200 00C11AC6 E6F5C000 MOV R5,#0x00C0 00C11ACA DAC14417 CALLS ?C_SCALLI(0xC11744)
Why does compiler do this?