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ibit_long_logic_imm.c (487B)

      1 /* 64-bit bitwise ops with an immediate operand on `long`. Exercises the 64-bit
      2  * logical-immediate (bitmask) encoding of and/orr/eor on x-registers. volatile
      3  * on the variable side keeps the op live.
      4  *   a = 0x3C;  a & 0xF0 = 0x30 (48);  a | 0x03 = 0x3F (63)
      5  *   a ^ 0xFF = 0xC3 (195);  (48 + 63 + 195) - 264 = 42. */
      6 int test_main(void) {
      7   volatile long a = 0x3C;
      8   long and_ = a & 0xF0;
      9   long or_ = a | 0x03;
     10   long xor_ = a ^ 0xFF;
     11   return (int)((and_ + or_ + xor_) - 264);
     12 }