gcc/testsuite/gcc.target/powerpc/vec-adde-int128.c

   1 /* { dg-do run { target { powerpc*-*-* && { p8vector_hw && int128 } } } } */
   2 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power8" } } */
   3 /* { dg-options "-mcpu=power8 -O3" } */
   4
   5
   6 /* Test that the vec_adde builtin works as expected.  */
   7
   8 #include "altivec.h"
   9
  10 #define N 4096
  11
  12 void abort ();
  13
  14 #define define_test_functions(STYPE, NAMESUFFIX) \
  15 \
  16 STYPE result_##NAMESUFFIX[N]; \
  17 STYPE addend1_##NAMESUFFIX[N]; \
  18 STYPE addend2_##NAMESUFFIX[N]; \
  19 STYPE carry_##NAMESUFFIX[N]; \
  20 STYPE expected_##NAMESUFFIX[N]; \
  21 \
  22 __attribute__((noinline)) void vector_tests_##NAMESUFFIX () \
  23 { \
  24   vector STYPE v1, v2, v3, tmp; \
  25   int i; \
  26   for (i = 0; i < N; i+=16/sizeof (STYPE)) \
  27     { \
  28       /* result=addend1+addend2+(carry & 0x1).  */ \
  29       v1 = (vector STYPE) { addend1_##NAMESUFFIX[i] }; \
  30       v2 = (vector STYPE) { addend2_##NAMESUFFIX[i] }; \
  31       v3 = (vector STYPE) { carry_##NAMESUFFIX[i] }; \
  32 \
  33       tmp = vec_adde (v1, v2, v3); \
  34       result_##NAMESUFFIX[i] = tmp[0]; \
  35     } \
  36 } \
  37 \
  38 __attribute__((noinline)) void init_##NAMESUFFIX () \
  39 { \
  40   int i; \
  41   for (i = 0; i < N; ++i) \
  42     { \
  43       result_##NAMESUFFIX[i] = 0; \
  44       addend1_##NAMESUFFIX[i] = 1; \
  45       addend2_##NAMESUFFIX[i] = 2; \
  46       carry_##NAMESUFFIX[i] = (i%12); \
  47       expected_##NAMESUFFIX[i] = addend1_##NAMESUFFIX[i] + \
  48                                  addend2_##NAMESUFFIX[i] + \
  49                                  (carry_##NAMESUFFIX[i] & 0x1); \
  50     } \
  51 } \
  52 \
  53 __attribute__((noinline)) void verify_results_##NAMESUFFIX () \
  54 { \
  55   int i; \
  56   for (i = 0; i < N; ++i) \
  57     { \
  58       if (result_##NAMESUFFIX[i] != expected_##NAMESUFFIX[i]) \
  59         abort (); \
  60     } \
  61 }
  62
  63
  64 #define execute_test_functions(STYPE, NAMESUFFIX) \
  65 { \
  66   init_##NAMESUFFIX (); \
  67   vector_tests_##NAMESUFFIX (); \
  68   verify_results_##NAMESUFFIX (); \
  69 }
  70
  71
  72 define_test_functions (signed __int128, si128);
  73 define_test_functions (unsigned __int128, ui128);
  74
  75 int main ()
  76 {
  77   execute_test_functions (signed __int128, si128);
  78   execute_test_functions (unsigned __int128, ui128);
  79
  80   return 0;
  81 }
  82
  83