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I'm just learning assembly code, trying to do the following, but it doesn't work. Why? Thanks.
register uint32 c[] = { 0, 0, 0, 0 }; register uint32 a[] = { 2, 5, 7, 9 }; register uint32 b[] = { 3, 3, 4, 5 }; __asm__ __volatile__( "ADD %0.2d, %1.2d, %2.2d;" : "=w" (c) // output : "w" (a) // input , "w" (b) // input ); for(auto i = 0; i < (sizeof(c)/sizeof(c[0])); ++i) { printf("%s a(%d) + b(%d) = c(%d)\n", __FUNCTION__, a[i], b[i], c[i]); //TODO: remove all printf's }