gcc/testsuite/gcc.target/powerpc/fold-vec-splat-char.c

   1 /* Verify that overloaded built-ins for vec_splat with char
   2    inputs produce the right code.  */
   3
   4 /* { dg-do compile } */
   5 /* { dg-options "-maltivec -O2" } */
   6 /* { dg-require-effective-target powerpc_altivec } */
   7
   8 #include <altivec.h>
   9
  10 vector bool char testb_0  (vector bool char x) { return vec_splat (x, 0b00000); }
  11 vector bool char testb_1  (vector bool char x) { return vec_splat (x, 0b00001); }
  12 vector bool char testb_2  (vector bool char x) { return vec_splat (x, 0b00010); }
  13 vector bool char testb_4  (vector bool char x) { return vec_splat (x, 0b00100); }
  14 vector bool char testb_8  (vector bool char x) { return vec_splat (x, 0b01000); }
  15
  16 vector signed char tests_0  (vector signed char x) { return vec_splat (x, 0b00000); }
  17 vector signed char tests_1  (vector signed char x) { return vec_splat (x, 0b00001); }
  18 vector signed char tests_2  (vector signed char x) { return vec_splat (x, 0b00010); }
  19 vector signed char tests_4  (vector signed char x) { return vec_splat (x, 0b00100); }
  20 vector signed char tests_8  (vector signed char x) { return vec_splat (x, 0b01000); }
  21
  22 vector unsigned char testu_0  (vector unsigned char x) { return vec_splat (x, 0b00000); }
  23 vector unsigned char testu_1  (vector unsigned char x) { return vec_splat (x, 0b00001); }
  24 vector unsigned char testu_2  (vector unsigned char x) { return vec_splat (x, 0b00010); }
  25 vector unsigned char testu_4  (vector unsigned char x) { return vec_splat (x, 0b00100); }
  26 vector unsigned char testu_8  (vector unsigned char x) { return vec_splat (x, 0b01000); }
  27
  28 /* Similar tests as above, but the source vector is a known constant. */
  29 const vector bool char by = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'};
  30 const vector signed char sy = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'};
  31 const vector unsigned char uy = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'};
  32
  33 vector bool char test_bc (vector bool char x) { return vec_splat (by, 0b00010); }
  34 vector signed char test_sc (vector signed char x) { return vec_splat (sy, 0b00011); }
  35 vector unsigned char test_uc (vector unsigned char x) { return vec_splat (uy, 0b00110); }
  36
  37 // vec_splat() using variable vectors should generate the vspltb instruction.
  38 /* { dg-final { scan-assembler-times "vspltb" 15 } } */
  39 // vec_splat() using a constant vector will generate a load or a splat immediate byte.
  40 /* { dg-final { scan-assembler-times {\mlvx\M|\mlxvw4x\M|\mxxspltib\M} 3 } } */