// Copyright (c) 2015 The Khronos Group Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and/or associated documentation files (the
// "Materials"), to deal in the Materials without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Materials, and to
// permit persons to whom the Materials are furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Materials.
//
// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
//    https://www.khronos.org/registry/
//
// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

#include "UnitSPIRV.h"

#include <gmock/gmock.h>
#include "TestFixture.h"

namespace {

using spvtest::Concatenate;
using spvtest::MakeInstruction;
using spvtest::MakeVector;
using spvtest::TextToBinaryTest;
using testing::Eq;

struct InstructionCase {
  uint32_t opcode;
  std::string name;
  std::string operands;
  std::vector<uint32_t> expected_operands;
};

using ExtInstOpenCLStdRoundTripTest =
    spvtest::TextToBinaryTestBase<::testing::TestWithParam<InstructionCase>>;

TEST_P(ExtInstOpenCLStdRoundTripTest, ParameterizedExtInst) {
  // This example should not validate.
  const std::string input =
      "%1 = OpExtInstImport \"OpenCL.std\"\n"
      "%3 = OpExtInst %2 %1 " +
      GetParam().name + " " + GetParam().operands + "\n";
  // First make sure it assembles correctly.
  EXPECT_THAT(
      CompiledInstructions(input),
      Eq(Concatenate(
          {MakeInstruction(SpvOpExtInstImport, {1}, MakeVector("OpenCL.std")),
           MakeInstruction(SpvOpExtInst, {2, 3, 1, GetParam().opcode},
                           GetParam().expected_operands)})))
      << input;
  // Now check the round trip through the disassembler.
  EXPECT_THAT(EncodeAndDecodeSuccessfully(input), input) << input;
}

#define CASE1(Enum, Name)                                      \
  {                                                            \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4", { 4 } \
  }
#define CASE2(Enum, Name)                                            \
  {                                                                  \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4 %5", { 4, 5 } \
  }
#define CASE3(Enum, Name)                                                  \
  {                                                                        \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4 %5 %6", { 4, 5, 6 } \
  }
#define CASE4(Enum, Name)                                           \
  {                                                                 \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4 %5 %6 %7", { \
      4, 5, 6, 7                                                    \
    }                                                               \
  }
#define CASE2Lit(Enum, Name, LiteralNumber)                                   \
  {                                                                           \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4 %5 " #LiteralNumber, { \
      4, 5, LiteralNumber                                                     \
    }                                                                         \
  }
#define CASE3Round(Enum, Name, Mode)                                    \
  {                                                                     \
    uint32_t(OpenCLLIB::Entrypoints::Enum), #Name, "%4 %5 %6 " #Mode, { \
      4, 5, 6, uint32_t(SpvFPRoundingMode##Mode)                        \
    }                                                                   \
  }

// clang-format off
// OpenCL.std: 2.1 Math extended instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLMath, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        // We are only testing the correctness of encoding and decoding here.
        // Semantic correctness should be the responsibility of validator.
        CASE1(Acos, acos), // enum value 0
        CASE1(Acosh, acosh),
        CASE1(Acospi, acospi),
        CASE1(Asin, asin),
        CASE1(Asinh, asinh),
        CASE1(Asinh, asinh),
        CASE1(Asinpi, asinpi),
        CASE1(Atan, atan),
        CASE2(Atan2, atan2),
        CASE1(Atanh, atanh),
        CASE1(Atanpi, atanpi),
        CASE2(Atan2pi, atan2pi),
        CASE1(Cbrt, cbrt),
        CASE1(Ceil, ceil),
        CASE1(Ceil, ceil),
        CASE2(Copysign, copysign),
        CASE1(Cos, cos),
        CASE1(Cosh, cosh),
        CASE1(Cospi, cospi),
        CASE1(Erfc, erfc),
        CASE1(Erf, erf),
        CASE1(Exp, exp),
        CASE1(Exp2, exp2),
        CASE1(Exp10, exp10),
        CASE1(Expm1, expm1),
        CASE1(Fabs, fabs),
        CASE2(Fdim, fdim),
        CASE1(Floor, floor),
        CASE3(Fma, fma),
        CASE2(Fmax, fmax),
        CASE2(Fmin, fmin),
        CASE2(Fmod, fmod),
        CASE2(Fract, fract),
        CASE2(Frexp, frexp),
        CASE2(Hypot, hypot),
        CASE1(Ilogb, ilogb),
        CASE2(Ldexp, ldexp),
        CASE1(Lgamma, lgamma),
        CASE2(Lgamma_r, lgamma_r),
        CASE1(Log, log),
        CASE1(Log2, log2),
        CASE1(Log10, log10),
        CASE1(Log1p, log1p),
        CASE3(Mad, mad),
        CASE2(Maxmag, maxmag),
        CASE2(Minmag, minmag),
        CASE2(Modf, modf),
        CASE1(Nan, nan),
        CASE2(Nextafter, nextafter),
        CASE3(Pow, pow),
        CASE1(Pown, pown),
        CASE2(Powr, powr),
        CASE2(Remainder, remainder),
        CASE3(Remquo, remquo),
        CASE1(Rint, rint),
        CASE2(Rootn, rootn),
        CASE1(Round, round),
        CASE1(Rsqrt, rsqrt),
        CASE1(Sin, sin),
        CASE2(Sincos, sincos),
        CASE1(Sinh, sinh),
        CASE1(Sinpi, sinpi),
        CASE1(Sqrt, sqrt),
        CASE1(Tan, tan),
        CASE1(Tanh, tanh),
        CASE1(Tanpi, tanpi),
        CASE1(Tgamma, tgamma),
        CASE1(Trunc, trunc),
        CASE1(Half_cos, half_cos),
        CASE2(Half_divide, half_divide),
        CASE1(Half_exp, half_exp),
        CASE1(Half_exp2, half_exp2),
        CASE1(Half_exp10, half_exp10),
        CASE1(Half_log, half_log),
        CASE1(Half_log2, half_log2),
        CASE1(Half_log10, half_log10),
        CASE2(Half_powr, half_powr),
        CASE1(Half_recip, half_recip),
        CASE1(Half_rsqrt, half_rsqrt),
        CASE1(Half_sin, half_sin),
        CASE1(Half_sqrt, half_sqrt),
        CASE1(Half_tan, half_tan),
        CASE1(Native_cos, native_cos),
        CASE2(Native_divide, native_divide),
        CASE1(Native_exp, native_exp),
        CASE1(Native_exp2, native_exp2),
        CASE1(Native_exp10, native_exp10),
        CASE1(Native_log, native_log),
        CASE1(Native_log10, native_log10),
        CASE2(Native_powr, native_powr),
        CASE1(Native_recip, native_recip),
        CASE1(Native_rsqrt, native_rsqrt),
        CASE1(Native_sin, native_sin),
        CASE1(Native_sqrt, native_sqrt),
        CASE1(Native_tan, native_tan), // enum value 94
    })));

// OpenCL.std: 2.1 Integer instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLInteger, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE1(SAbs, s_abs), // enum value 141
        CASE2(SAbs_diff, s_abs_diff),
        CASE2(SAdd_sat, s_add_sat),
        CASE2(UAdd_sat, u_add_sat),
        CASE2(SHadd, s_hadd),
        CASE2(UHadd, u_hadd),
        CASE2(SRhadd, s_rhadd),
        CASE2(SRhadd, s_rhadd),
        CASE3(SClamp, s_clamp),
        CASE3(UClamp, u_clamp),
        CASE1(Clz, clz),
        CASE1(Ctz, ctz),
        CASE3(SMad_hi, s_mad_hi),
        CASE3(UMad_sat, u_mad_sat),
        CASE3(SMad_sat, s_mad_sat),
        CASE2(SMax, s_max),
        CASE2(UMax, u_max),
        CASE2(SMin, s_min),
        CASE2(UMin, u_min),
        CASE2(SMul_hi, s_mul_hi),
        CASE2(Rotate, rotate),
        CASE2(SSub_sat, s_sub_sat),
        CASE2(USub_sat, u_sub_sat),
        CASE2(U_Upsample, u_upsample),
        CASE2(S_Upsample, s_upsample),
        CASE1(Popcount, popcount),
        CASE3(SMad24, s_mad24),
        CASE3(UMad24, u_mad24),
        CASE3(SMul24, s_mul24),
        CASE3(UMul24, u_mul24), // enum value 170
        CASE1(UAbs, u_abs), // enum value 201
        CASE2(UAbs_diff, u_abs_diff),
        CASE2(UMul_hi, u_mul_hi),
        CASE3(UMad_hi, u_mad_hi), // enum value 204
    })));

// OpenCL.std: 2.3 Common instrucitons
INSTANTIATE_TEST_CASE_P(
    OpenCLCommon, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE3(FClamp, fclamp), // enum value 95
        CASE1(Degrees, degrees),
        CASE2(FMax_common, fmax_common),
        CASE2(FMin_common, fmin_common),
        CASE3(Mix, mix),
        CASE1(Radians, radians),
        CASE2(Step, step),
        CASE3(Smoothstep, smoothstep),
        CASE1(Sign, sign), // enum value 103
    })));

// OpenCL.std: 2.4 Geometric instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLGeometric, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE2(Cross, cross), // enum value 104
        CASE2(Distance, distance),
        CASE1(Length, length),
        CASE1(Normalize, normalize),
        CASE2(Fast_distance, fast_distance),
        CASE1(Fast_length, fast_length),
        CASE1(Fast_normalize, fast_normalize), // enum value 110
    })));

// OpenCL.std: 2.5 Relational instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLRelational, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE3(Bitselect, bitselect), // enum value 186
        CASE3(Select, select), // enum value 187
    })));

// OpenCL.std: 2.6 Vector data load and store instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLVectorLoadStore, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        // The last argument to Vloadn must be one of 2, 3, 4, 8, 16.
        CASE2Lit(Vloadn, vloadn, 2),
        CASE2Lit(Vloadn, vloadn, 3),
        CASE2Lit(Vloadn, vloadn, 4),
        CASE2Lit(Vloadn, vloadn, 8),
        CASE2Lit(Vloadn, vloadn, 16),
        CASE3(Vstoren, vstoren),
        CASE2(Vload_half, vload_half),
        CASE2Lit(Vload_halfn, vload_halfn, 2),
        CASE2Lit(Vload_halfn, vload_halfn, 3),
        CASE2Lit(Vload_halfn, vload_halfn, 4),
        CASE2Lit(Vload_halfn, vload_halfn, 8),
        CASE2Lit(Vload_halfn, vload_halfn, 16),
        CASE3(Vstore_half, vstore_half),
        // Try all the rounding modes.
        CASE3Round(Vstore_half_r, vstore_half_r, RTE),
        CASE3Round(Vstore_half_r, vstore_half_r, RTZ),
        CASE3Round(Vstore_half_r, vstore_half_r, RTP),
        CASE3Round(Vstore_half_r, vstore_half_r, RTN),
        CASE3(Vstore_halfn, vstore_halfn),
        CASE3Round(Vstore_halfn_r, vstore_halfn_r, RTE),
        CASE3Round(Vstore_halfn_r, vstore_halfn_r, RTZ),
        CASE3Round(Vstore_halfn_r, vstore_halfn_r, RTP),
        CASE3Round(Vstore_halfn_r, vstore_halfn_r, RTN),
        CASE2Lit(Vloada_halfn, vloada_halfn, 2),
        CASE2Lit(Vloada_halfn, vloada_halfn, 3),
        CASE2Lit(Vloada_halfn, vloada_halfn, 4),
        CASE2Lit(Vloada_halfn, vloada_halfn, 8),
        CASE2Lit(Vloada_halfn, vloada_halfn, 16),
        CASE3(Vstorea_halfn, vstorea_halfn),
        CASE3Round(Vstorea_halfn_r, vstorea_halfn_r, RTE),
        CASE3Round(Vstorea_halfn_r, vstorea_halfn_r, RTZ),
        CASE3Round(Vstorea_halfn_r, vstorea_halfn_r, RTP),
        CASE3Round(Vstorea_halfn_r, vstorea_halfn_r, RTN),
    })));

// OpenCL.std: 2.7 Miscellaneous vector instructions
INSTANTIATE_TEST_CASE_P(
    OpenCLMiscellaneousVector, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE2(Shuffle, shuffle),
        CASE3(Shuffle2, shuffle2),
    })));

// OpenCL.std: 2.8 Miscellaneous instructions

#define PREFIX uint32_t(OpenCLLIB::Entrypoints::Printf), "printf"
INSTANTIATE_TEST_CASE_P(
    OpenCLMiscPrintf, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
      // Printf is interesting becuase it takes a variable number of arguments.
      // Start with zero optional arguments.
      {PREFIX, "%4", {4}},
      {PREFIX, "%4 %5", {4, 5}},
      {PREFIX, "%4 %5 %6", {4, 5, 6}},
      {PREFIX, "%4 %5 %6 %7", {4, 5, 6, 7}},
      {PREFIX, "%4 %5 %6 %7 %8", {4, 5, 6, 7, 8}},
      {PREFIX, "%4 %5 %6 %7 %8 %9", {4, 5, 6, 7, 8, 9}},
      {PREFIX, "%4 %5 %6 %7 %8 %9 %10", {4, 5, 6, 7, 8, 9, 10}},
      {PREFIX, "%4 %5 %6 %7 %8 %9 %10 %11", {4, 5, 6, 7, 8, 9, 10, 11}},
      {PREFIX, "%4 %5 %6 %7 %8 %9 %10 %11 %12",
        {4, 5, 6, 7, 8, 9, 10, 11, 12}},
      {PREFIX, "%4 %5 %6 %7 %8 %9 %10 %11 %12 %13",
        {4, 5, 6, 7, 8, 9, 10, 11, 12, 13}},
      {PREFIX, "%4 %5 %6 %7 %8 %9 %10 %11 %12 %13 %14",
        {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}},
    })));
#undef PREFIX

INSTANTIATE_TEST_CASE_P(
    OpenCLMiscPrefetch, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE2(Prefetch, prefetch),
    })));

// OpenCL.std: 2.9.1 Image encoding
// No new instructions defined in this section.

// OpenCL.std: 2.9.2 Sampler encoding
// No new instructions defined in this section.

// OpenCL.std: 2.9.3 Image read
// No new instructions defined in this section.
// Use core instruction OpImageSampleExplicitLod instead.

// OpenCL.std: 2.9.4 Image write
INSTANTIATE_TEST_CASE_P(
    OpenCLImageWrite, ExtInstOpenCLStdRoundTripTest,
    ::testing::ValuesIn(std::vector<InstructionCase>({
        CASE4(Write_imagef_mipmap_lod, write_imagef_mipmap_lod),
        CASE4(Write_imagei_mipmap_lod, write_imagei_mipmap_lod),
        CASE4(Write_imageui_mipmap_lod, write_imageui_mipmap_lod),
    })));

// clang-format on

#undef CASE1
#undef CASE2
#undef CASE3
#undef CASE4
#undef CASE2Lit
#undef CASE3Round

}  // anonymous namespace