gcc/testsuite/gcc.target/powerpc/direct-move-vector.c

   1 /* { dg-do compile { target { powerpc*-*-linux* && lp64 } } } */
   2 /* { dg-require-effective-target powerpc_p9vector_ok } */
   3 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power9" } } */
   4 /* { dg-options "-mcpu=power9 -O2" } */
   5
   6 /* Check code generation for direct move for long types.  */
   7
   8 void
   9 test (vector double *p)
  10 {
  11   vector double v1 = *p;
  12   vector double v2;
  13   vector double v3;
  14   vector double v4;
  15
  16   /* Force memory -> FPR load.  */
  17   __asm__ (" # reg %x0" : "+d" (v1));
  18
  19   /* force VSX -> GPR direct move.  */
  20   v2 = v1;
  21   __asm__ (" # reg %0" : "+r" (v2));
  22
  23   /* Force GPR -> Altivec direct move.  */
  24   v3 = v2;
  25   __asm__ (" # reg %x0" : "+v" (v3));
  26   *p = v3;
  27 }
  28
  29 /* { dg-final { scan-assembler "mfvsrd"  } } */
  30 /* { dg-final { scan-assembler "mfvsrld" } } */
  31 /* { dg-final { scan-assembler "mtvsrdd" } } */
  32
  33