gcc/testsuite/gcc.target/aarch64/movqi_1.c

   1 /* { dg-do assemble } */
   2 /* { dg-options "-O --save-temps" } */
   3 /* { dg-final { check-function-bodies "**" "" "" } } */
   4
   5 #pragma GCC target "+nothing+nosimd+fp"
   6
   7 #include <stdint.h>
   8
   9 /*
  10 ** fpr_to_fpr:
  11 **      fmov    s0, s1
  12 **      ret
  13 */
  14 void
  15 fpr_to_fpr (void)
  16 {
  17   register uint8_t q0 asm ("q0");
  18   register uint8_t q1 asm ("q1");
  19   asm volatile ("" : "=w" (q1));
  20   q0 = q1;
  21   asm volatile ("" :: "w" (q0));
  22 }
  23
  24 /*
  25 ** gpr_to_fpr:
  26 **      fmov    s0, w0
  27 **      ret
  28 */
  29 void
  30 gpr_to_fpr (uint8_t w0)
  31 {
  32   register uint8_t q0 asm ("q0");
  33   q0 = w0;
  34   asm volatile ("" :: "w" (q0));
  35 }
  36
  37 /*
  38 ** zero_to_fpr:
  39 **      fmov    s0, wzr
  40 **      ret
  41 */
  42 void
  43 zero_to_fpr ()
  44 {
  45   register uint8_t q0 asm ("q0");
  46   q0 = 0;
  47   asm volatile ("" :: "w" (q0));
  48 }
  49
  50 /*
  51 ** fpr_to_gpr:
  52 **      fmov    w0, s0
  53 **      ret
  54 */
  55 uint8_t
  56 fpr_to_gpr ()
  57 {
  58   register uint8_t q0 asm ("q0");
  59   asm volatile ("" : "=w" (q0));
  60   return q0;
  61 }