gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqshrun_n.c

   1 #include <arm_neon.h>
   2 #include "arm-neon-ref.h"
   3 #include "compute-ref-data.h"
   4
   5 /* Expected values of cumulative_saturation flag with negative input.  */
   6 int VECT_VAR(expected_cumulative_sat_neg,int,16,8) = 1;
   7 int VECT_VAR(expected_cumulative_sat_neg,int,32,4) = 1;
   8 int VECT_VAR(expected_cumulative_sat_neg,int,64,2) = 1;
   9
  10 /* Expected results with negative input.  */
  11 VECT_VAR_DECL(expected_neg,uint,8,8) [] = { 0x0, 0x0, 0x0, 0x0,
  12                                             0x0, 0x0, 0x0, 0x0 };
  13 VECT_VAR_DECL(expected_neg,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
  14 VECT_VAR_DECL(expected_neg,uint,32,2) [] = { 0x0, 0x0 };
  15
  16 /* Expected values of cumulative_saturation flag with max input value
  17    shifted by 1.  */
  18 int VECT_VAR(expected_cumulative_sat_max_sh1,int,16,8) = 1;
  19 int VECT_VAR(expected_cumulative_sat_max_sh1,int,32,4) = 1;
  20 int VECT_VAR(expected_cumulative_sat_max_sh1,int,64,2) = 1;
  21
  22 /* Expected results with max input value shifted by 1.  */
  23 VECT_VAR_DECL(expected_max_sh1,uint,8,8) [] = { 0xff, 0xff, 0xff, 0xff,
  24                                                 0xff, 0xff, 0xff, 0xff };
  25 VECT_VAR_DECL(expected_max_sh1,uint,16,4) [] = { 0xffff, 0xffff,
  26                                                  0xffff, 0xffff };
  27 VECT_VAR_DECL(expected_max_sh1,uint,32,2) [] = { 0xffffffff, 0xffffffff };
  28 VECT_VAR_DECL(expected_max_sh1,uint,64,1) [] = { 0x3333333333333333 };
  29
  30 /* Expected values of cumulative_saturation flag.  */
  31 int VECT_VAR(expected_cumulative_sat,int,16,8) = 0;
  32 int VECT_VAR(expected_cumulative_sat,int,32,4) = 1;
  33 int VECT_VAR(expected_cumulative_sat,int,64,2) = 0;
  34
  35 /* Expected results.  */
  36 VECT_VAR_DECL(expected,uint,8,8) [] = { 0x48, 0x48, 0x48, 0x48,
  37                                         0x48, 0x48, 0x48, 0x48 };
  38 VECT_VAR_DECL(expected,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
  39 VECT_VAR_DECL(expected,uint,32,2) [] = { 0xdeadbe, 0xdeadbe };
  40
  41
  42 #define INSN vqshrun_n
  43 #define TEST_MSG "VQSHRUN_N"
  44
  45 #define FNNAME1(NAME) void exec_ ## NAME (void)
  46 #define FNNAME(NAME) FNNAME1(NAME)
  47
  48 FNNAME (INSN)
  49 {
  50   /* Basic test: y=vqshrun_n(x,v), then store the result.  */
  51 #define TEST_VQSHRUN_N2(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
  52   Set_Neon_Cumulative_Sat(0, VECT_VAR(vector_res, uint, W2, N));        \
  53   VECT_VAR(vector_res, uint, W2, N) =                                   \
  54     INSN##_##T2##W(VECT_VAR(vector, T1, W, N),                          \
  55                    V);                                                  \
  56   vst1_u##W2(VECT_VAR(result, uint, W2, N),                             \
  57              VECT_VAR(vector_res, uint, W2, N));                        \
  58   CHECK_CUMULATIVE_SAT(TEST_MSG, T1, W, N, EXPECTED_CUMULATIVE_SAT, CMT)
  59
  60   /* Two auxliary macros are necessary to expand INSN */
  61 #define TEST_VQSHRUN_N1(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
  62   TEST_VQSHRUN_N2(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT)
  63
  64 #define TEST_VQSHRUN_N(T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
  65   TEST_VQSHRUN_N1(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT)
  66
  67
  68   /* vector is twice as large as vector_res.  */
  69   DECL_VARIABLE(vector, int, 16, 8);
  70   DECL_VARIABLE(vector, int, 32, 4);
  71   DECL_VARIABLE(vector, int, 64, 2);
  72
  73   DECL_VARIABLE(vector_res, uint, 8, 8);
  74   DECL_VARIABLE(vector_res, uint, 16, 4);
  75   DECL_VARIABLE(vector_res, uint, 32, 2);
  76
  77   clean_results ();
  78
  79   /* Fill input vector with negative values, to check saturation on
  80      limits.  */
  81   VDUP(vector, q, int, s, 16, 8, -2);
  82   VDUP(vector, q, int, s, 32, 4, -3);
  83   VDUP(vector, q, int, s, 64, 2, -4);
  84
  85   /* Choose shift amount arbitrarily.  */
  86 #define CMT " (negative input)"
  87   TEST_VQSHRUN_N(int, s, 16, 8, 8, 3, expected_cumulative_sat_neg, CMT);
  88   TEST_VQSHRUN_N(int, s, 32, 16, 4, 4, expected_cumulative_sat_neg, CMT);
  89   TEST_VQSHRUN_N(int, s, 64, 32, 2, 2, expected_cumulative_sat_neg, CMT);
  90
  91   CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_neg, CMT);
  92   CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_neg, CMT);
  93   CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_neg, CMT);
  94
  95
  96   /* Fill input vector with max value, to check saturation on
  97      limits.  */
  98   VDUP(vector, q, int, s, 16, 8, 0x7FFF);
  99   VDUP(vector, q, int, s, 32, 4, 0x7FFFFFFF);
 100   VDUP(vector, q, int, s, 64, 2, 0x7FFFFFFFFFFFFFFFLL);
 101
 102 #undef CMT
 103 #define CMT " (check cumulative saturation)"
 104   TEST_VQSHRUN_N(int, s, 16, 8, 8, 1, expected_cumulative_sat_max_sh1, CMT);
 105   TEST_VQSHRUN_N(int, s, 32, 16, 4, 1, expected_cumulative_sat_max_sh1, CMT);
 106   TEST_VQSHRUN_N(int, s, 64, 32, 2, 1, expected_cumulative_sat_max_sh1, CMT);
 107
 108   CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_max_sh1, CMT);
 109   CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_max_sh1, CMT);
 110   CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_max_sh1, CMT);
 111
 112
 113   /* Fill input vector with positive values, to check normal case.  */
 114   VDUP(vector, q, int, s, 16, 8, 0x1234);
 115   VDUP(vector, q, int, s, 32, 4, 0x87654321);
 116   VDUP(vector, q, int, s, 64, 2, 0xDEADBEEF);
 117
 118 #undef CMT
 119 #define CMT ""
 120   TEST_VQSHRUN_N(int, s, 16, 8, 8, 6, expected_cumulative_sat, CMT);
 121   TEST_VQSHRUN_N(int, s, 32, 16, 4, 7, expected_cumulative_sat, CMT);
 122   TEST_VQSHRUN_N(int, s, 64, 32, 2, 8, expected_cumulative_sat, CMT);
 123
 124   CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected, CMT);
 125   CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected, CMT);
 126   CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected, CMT);
 127 }
 128
 129 int main (void)
 130 {
 131   exec_vqshrun_n ();
 132   return 0;
 133 }