modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr82954.c (about) 1 /* PR tree-optimization/82954 */ 2 3 __attribute__((noipa)) void 4 foo (int *__restrict p, int *__restrict q) 5 { 6 p[0] = p[0] ^ 1; 7 p[1] = p[1] ^ 2; 8 p[2] = p[2] ^ q[2]; 9 p[3] = p[3] ^ q[3]; 10 } 11 12 int 13 main () 14 { 15 int p[4] = { 16, 32, 64, 128 }; 16 int q[4] = { 8, 4, 2, 1 }; 17 asm volatile ("" : : "g" (p), "g" (q) : "memory"); 18 foo (p, q); 19 if (p[0] != 17 || p[1] != 34 || p[2] != 66 || p[3] != 129) 20 __builtin_abort (); 21 return 0; 22 }