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WinAVR 把我的这些代码优化掉了, 为什么??
store indirect with displacement78: if(sta == 0b001001) //a_0+00000056: 8189 ldd r24,y+1 load indirect with displacement+00000057: 3089 cpi r24,0x09 compare with immediate+00000058: f429 brne pc+0x06 branch if not equal79: set_a_0_delay = set_delay;+00000059: 91800060 lds r24,0x0060 load direct from data space+0000005b: 93800066 sts 0x0066,r24 store direct to dat
用在RTOS中的GCC库函数itoa的悬疑
n, signed+00001da1: 3245 cpi r20,0x25 compare with immediate+00001da2: f4b4 brge pc+0x17 branch if greater or equal, signed+00001da3: 304a cpi r20,0x0a compare with immediate+00001da4: f429 brne pc+0x06 branch if not equal+00001da5: fb97 bst r25,7 bit store from register to t+00001da6: f41e brtc pc+0x04 branch if t flag cleared+00001da7: 9590 com r25