gcc/testsuite/gcc.target/powerpc/pr48857.c

   1 /* Expected instruction selection as characterized by
   2    scan-assembler-times directives below is only relevant to
   3    little-endian targets.  */
   4 /* { dg-do compile { target { powerpc64le-*-* } } } */
   5 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   6 /* { dg-require-effective-target powerpc_vsx_ok } */
   7 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power7" } } */
   8 /* { dg-options "-O2 -mcpu=power7 -mabi=altivec" } */
   9 /* { dg-final { scan-assembler-times "lvx" 1 } } */
  10 /* { dg-final { scan-assembler-times "stvx" 1 } } */
  11 /* { dg-final { scan-assembler-not "ld" } } */
  12 /* { dg-final { scan-assembler-not "lwz" } } */
  13 /* { dg-final { scan-assembler-not "stw" } } */
  14 /* { dg-final { scan-assembler-not "addi" } } */
  15
  16 typedef vector long long v2di_type;
  17
  18 v2di_type
  19 return_v2di (v2di_type *ptr)
  20 {
  21   /* As of pr48857, should generate lxvd2x 34,0,3
  22      followed by xxpermdi 34,34,34,2.  Subsequent optimization
  23      recognizes that ptr refers to an aligned vector and replaces
  24      this with lvx 2,0,3.  */
  25   return *ptr;
  26 }
  27
  28 void
  29 pass_v2di (v2di_type arg, v2di_type *ptr)
  30 {
  31   /* As of pr48857, should generate xxpermdi 34,34,34,2 followed by
  32      stxvd2x 34,0,5.  Subsequent optimization recognizes that ptr
  33      refers to an aligned vector and replaces this with stvx 2,0,5.  */
  34   *ptr = arg;
  35 }
  36