gcc/testsuite/gcc.target/aarch64/bfloat16_scalar_1.c

   1 /* { dg-do assemble { target { aarch64*-*-* } } } */
   2 /* { dg-require-effective-target arm_v8_2a_bf16_neon_ok } */
   3 /* { dg-add-options arm_v8_2a_bf16_neon }  */
   4 /* { dg-additional-options "-O3 --save-temps -std=gnu90" } */
   5 /* { dg-final { check-function-bodies "**" "" } } */
   6
   7 #include <arm_bf16.h>
   8
   9 /*
  10 **stacktest1:
  11 **      sub     sp, sp, #16
  12 **      str     h0, \[sp, 14\]
  13 **      ldr     h0, \[sp, 14\]
  14 **      add     sp, sp, 16
  15 **      ret
  16 */
  17 bfloat16_t stacktest1 (bfloat16_t __a)
  18 {
  19   volatile bfloat16_t b = __a;
  20   return b;
  21 }
  22
  23 /*
  24 **bfloat_mov_ww:
  25 **      mov     v1.h\[0\], v2.h\[0\]
  26 **      ret
  27 */
  28 void bfloat_mov_ww (void)
  29 {
  30   register bfloat16_t x asm ("h2");
  31   register bfloat16_t y asm ("h1");
  32   asm volatile ("" : "=w" (x));
  33   y = x;
  34   asm volatile ("" :: "w" (y));
  35 }
  36
  37 /*
  38 **bfloat_mov_rw:
  39 **      dup     v1.4h, w1
  40 **      ret
  41 */
  42 void bfloat_mov_rw (void)
  43 {
  44   register bfloat16_t x asm ("w1");
  45   register bfloat16_t y asm ("h1");
  46   asm volatile ("" : "=r" (x));
  47   y = x;
  48   asm volatile ("" :: "w" (y));
  49 }
  50
  51 /*
  52 **bfloat_mov_wr:
  53 **      umov    w1, v1.h\[0\]
  54 **      ret
  55 */
  56 void bfloat_mov_wr (void)
  57 {
  58   register bfloat16_t x asm ("h1");
  59   register bfloat16_t y asm ("w1");
  60   asm volatile ("" : "=w" (x));
  61   y = x;
  62   asm volatile ("" :: "r" (y));
  63 }
  64
  65 /*
  66 **bfloat_mov_rr:
  67 **      mov     w1, w2
  68 **      ret
  69 */
  70 void bfloat_mov_rr (void)
  71 {
  72   register bfloat16_t x asm ("w2");
  73   register bfloat16_t y asm ("w1");
  74   asm volatile ("" : "=r" (x));
  75   y = x;
  76   asm volatile ("" :: "r" (y));
  77 }
  78
  79 /*
  80 **bfloat_mov_rm:
  81 **      strh    w2, \[x0\]
  82 **      ret
  83 */
  84 void bfloat_mov_rm (bfloat16_t *ptr)
  85 {
  86    register bfloat16_t x asm ("w2");
  87    asm volatile ("" : "=r" (x));
  88    *ptr = x;
  89 }
  90
  91 /*
  92 **bfloat_mov_mr:
  93 **      ldrh    w2, \[x0\]
  94 **      ret
  95 */
  96 void bfloat_mov_mr (bfloat16_t *ptr)
  97 {
  98    register bfloat16_t y asm ("w2");
  99    y = *ptr;
 100    asm volatile ("" :: "r" (y));
 101 }
 102