gcc/testsuite/gcc.target/powerpc/altivec-cell-8.c

   1 /* { dg-do run { target { powerpc*-*-* && cell_hw } } } */
   2 /* { dg-do compile { target { powerpc*-*-* && { ! cell_hw } } } } */
   3 /* { dg-require-effective-target powerpc_ppu_ok } */
   4 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=cell" } } */
   5 /* { dg-options "-O2 -maltivec -mabi=altivec -mcpu=cell" } */
   6 #include <altivec.h>
   7 #include <string.h>
   8
   9 extern void abort (void);
  10
  11 typedef short int sint16;
  12 typedef signed char int8;
  13
  14 int main1(void) __attribute__((noinline));
  15 int main1(void)
  16 {
  17     sint16 test_vector[4] = { 1678, -2356, 19246, -17892 };
  18     int8 test_dst[128] __attribute__(( aligned( 16 )));
  19     float test_out[4] __attribute__(( aligned( 16 )));
  20     int p;
  21
  22     for( p = 0; p < 24; ++p )
  23     {
  24         memset( test_dst, 0, 128 );
  25         memcpy( &test_dst[p], test_vector, 8 );
  26         {
  27             vector float VR, VL, V;
  28    /* load the righthand section of the misaligned vector */
  29             VR = (vector float) vec_lvrx( 8, &test_dst[p] );
  30             VL = (vector float) vec_lvlx( 0, &test_dst[p] );
  31    /* Vector Shift Left Double by Octet Immediate, move the right hand section into the bytes */
  32             VR = vec_vsldoi( VR, VR, 2 << 2 );
  33    /* or those two together */
  34             V = vec_vor( VL, VR );
  35    /* sign extend */
  36             V = (vector float) vec_vupkhsh((vector bool short)V );
  37    /* fixed to float by S16_SHIFT_BITS bits */
  38             V = (vector float) vec_vcfsx ((vector signed int)V, 5 );
  39
  40             vec_stvx( V, 0, &test_out[0] );
  41             if (test_out[0] != 52.437500)
  42                 abort ();
  43             if (test_out[1] != -73.625000)
  44                 abort ();
  45             if (test_out[2] != 601.437500)
  46                 abort ();
  47             if (test_out[3] != -559.125000)
  48                 abort ();
  49         }
  50     }
  51 return 0;
  52 }
  53
  54
  55 int main(void)
  56 {
  57   return main1();
  58 }