gcc/testsuite/gcc.target/aarch64/movtf_4.c

   1 /* { dg-do assemble } */
   2 /* { dg-require-effective-target large_long_double } */
   3 /* { dg-options "-O -mtune=neoverse-v1 --save-temps" } */
   4 /* { dg-final { check-function-bodies "**" "" "" } } */
   5
   6 #pragma GCC target "+sve"
   7
   8 /*
   9 ** fpr_to_fpr:
  10 **      mov     z0.d, z1.d
  11 **      ret
  12 */
  13 long double
  14 fpr_to_fpr (long double q0, long double q1) [[arm::streaming_compatible]]
  15 {
  16   return q1;
  17 }
  18
  19 /*
  20 ** gpr_to_fpr:  { target aarch64_little_endian }
  21 **      fmov    d0, x0
  22 **      fmov    v0.d\[1\], x1
  23 **      ret
  24 */
  25 /*
  26 ** gpr_to_fpr:  { target aarch64_big_endian }
  27 **      fmov    d0, x1
  28 **      fmov    v0.d\[1\], x0
  29 **      ret
  30 */
  31 long double
  32 gpr_to_fpr () [[arm::streaming_compatible]]
  33 {
  34   register long double x0 asm ("x0");
  35   asm volatile ("" : "=r" (x0));
  36   return x0;
  37 }
  38
  39 /*
  40 ** zero_to_fpr:
  41 **      fmov    s0, wzr
  42 **      ret
  43 */
  44 long double
  45 zero_to_fpr () [[arm::streaming_compatible]]
  46 {
  47   return 0;
  48 }
  49
  50 /*
  51 ** fpr_to_gpr:  { target aarch64_little_endian }
  52 ** (
  53 **      fmov    x0, d0
  54 **      fmov    x1, v0.d\[1\]
  55 ** |
  56 **      fmov    x1, v0.d\[1\]
  57 **      fmov    x0, d0
  58 ** )
  59 **      ret
  60 */
  61 /*
  62 ** fpr_to_gpr:  { target aarch64_big_endian }
  63 ** (
  64 **      fmov    x1, d0
  65 **      fmov    x0, v0.d\[1\]
  66 ** |
  67 **      fmov    x0, v0.d\[1\]
  68 **      fmov    x1, d0
  69 ** )
  70 **      ret
  71 */
  72 void
  73 fpr_to_gpr (long double q0) [[arm::streaming_compatible]]
  74 {
  75   register long double x0 asm ("x0");
  76   x0 = q0;
  77   asm volatile ("" :: "r" (x0));
  78 }