// Copyright 2022 The Tint Authors. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include "src/tint/resolver/const_eval_test.h" using namespace tint::number_suffixes; // NOLINT namespace tint::resolver { namespace { struct Case { Value input; struct Success { Value value; }; struct Failure { builder::CreatePtrs create_ptrs; }; utils::Result expected; }; static std::ostream& operator<<(std::ostream& o, const Case& c) { o << "input: " << c.input; if (c.expected) { o << ", expected: " << c.expected.Get().value; } else { o << ", expected failed bitcast to " << c.expected.Failure().create_ptrs; } return o; } template Case Success(FROM input, TO expected) { return Case{input, Case::Success{expected}}; } template Case Failure(FROM input) { return Case{input, Case::Failure{builder::CreatePtrsFor()}}; } using ResolverConstEvalBitcastTest = ResolverTestWithParam; TEST_P(ResolverConstEvalBitcastTest, Test) { const auto& input = GetParam().input; const auto& expected = GetParam().expected; // Get the target type CreatePtrs builder::CreatePtrs target_create_ptrs; if (expected) { target_create_ptrs = expected.Get().value.create_ptrs; } else { target_create_ptrs = expected.Failure().create_ptrs; } auto* target_ty = target_create_ptrs.ast(*this); ASSERT_NE(target_ty, nullptr); auto* input_val = input.Expr(*this); const ast::Expression* expr = Bitcast(Source{{12, 34}}, target_ty, input_val); WrapInFunction(expr); auto* target_sem_ty = target_create_ptrs.sem(*this); if (expected) { EXPECT_TRUE(r()->Resolve()) << r()->error(); auto* sem = Sem().GetVal(expr); ASSERT_NE(sem, nullptr); EXPECT_TYPE(sem->Type(), target_sem_ty); ASSERT_NE(sem->ConstantValue(), nullptr); EXPECT_TYPE(sem->ConstantValue()->Type(), target_sem_ty); auto expected_values = expected.Get().value.args; auto got_values = ScalarsFrom(sem->ConstantValue()); EXPECT_EQ(expected_values, got_values); } else { ASSERT_FALSE(r()->Resolve()); EXPECT_THAT(r()->error(), testing::StartsWith("12:34 error:")); EXPECT_THAT(r()->error(), testing::HasSubstr("cannot be represented as")); } } const u32 nan_as_u32 = utils::Bitcast(std::numeric_limits::quiet_NaN()); const i32 nan_as_i32 = utils::Bitcast(std::numeric_limits::quiet_NaN()); const u32 inf_as_u32 = utils::Bitcast(std::numeric_limits::infinity()); const i32 inf_as_i32 = utils::Bitcast(std::numeric_limits::infinity()); const u32 neg_inf_as_u32 = utils::Bitcast(-std::numeric_limits::infinity()); const i32 neg_inf_as_i32 = utils::Bitcast(-std::numeric_limits::infinity()); INSTANTIATE_TEST_SUITE_P(Bitcast, ResolverConstEvalBitcastTest, testing::ValuesIn({ // Bitcast to same (concrete) type, no change Success(Val(0_u), Val(0_u)), // Success(Val(0_i), Val(0_i)), // Success(Val(0_f), Val(0_f)), // Success(Val(123_u), Val(123_u)), // Success(Val(123_i), Val(123_i)), // Success(Val(123.456_f), Val(123.456_f)), // Success(Val(u32::Highest()), Val(u32::Highest())), // Success(Val(u32::Lowest()), Val(u32::Lowest())), // Success(Val(i32::Highest()), Val(i32::Highest())), // Success(Val(i32::Lowest()), Val(i32::Lowest())), // Success(Val(f32::Highest()), Val(f32::Highest())), // Success(Val(f32::Lowest()), Val(f32::Lowest())), // // Bitcast to different type Success(Val(0_u), Val(0_i)), // Success(Val(0_u), Val(0_f)), // Success(Val(0_i), Val(0_u)), // Success(Val(0_i), Val(0_f)), // Success(Val(0.0_f), Val(0_i)), // Success(Val(0.0_f), Val(0_u)), // Success(Val(1_u), Val(1_i)), // Success(Val(1_u), Val(1.4013e-45_f)), // Success(Val(1_i), Val(1_u)), // Success(Val(1_i), Val(1.4013e-45_f)), // Success(Val(1.0_f), Val(0x3F800000_u)), // Success(Val(1.0_f), Val(0x3F800000_i)), // Success(Val(123_u), Val(123_i)), // Success(Val(123_u), Val(1.7236e-43_f)), // Success(Val(123_i), Val(123_u)), // Success(Val(123_i), Val(1.7236e-43_f)), // Success(Val(123.0_f), Val(0x42F60000_u)), // Success(Val(123.0_f), Val(0x42F60000_i)), // // Bitcast from abstract materializes lhs first, // so same results as above. Success(Val(0_a), Val(0_i)), // Success(Val(0_a), Val(0_f)), // Success(Val(0_a), Val(0_u)), // Success(Val(0_a), Val(0_f)), // Success(Val(0_a), Val(0_i)), // Success(Val(0_a), Val(0_u)), // Success(Val(1_a), Val(1_i)), // Success(Val(1_a), Val(1.4013e-45_f)), // Success(Val(1_a), Val(1_u)), // Success(Val(1_a), Val(1.4013e-45_f)), // Success(Val(1.0_a), Val(0x3F800000_u)), // Success(Val(1.0_a), Val(0x3F800000_i)), // Success(Val(123_a), Val(123_i)), // Success(Val(123_a), Val(1.7236e-43_f)), // Success(Val(123_a), Val(123_u)), // Success(Val(123_a), Val(1.7236e-43_f)), // Success(Val(123.0_a), Val(0x42F60000_u)), // Success(Val(123.0_a), Val(0x42F60000_i)), // // u32 <-> i32 sign bit Success(Val(0xFFFFFFFF_u), Val(-1_i)), // Success(Val(-1_i), Val(0xFFFFFFFF_u)), // Success(Val(0x80000000_u), Val(i32::Lowest())), // Success(Val(i32::Lowest()), Val(0x80000000_u)), // // Vector tests Success(Vec(0_u, 1_u, 123_u), Vec(0_i, 1_i, 123_i)), Success(Vec(0.0_f, 1.0_f, 123.0_f), Vec(0_i, 0x3F800000_i, 0x42F60000_i)), // Unrepresentable Failure(Val(nan_as_u32)), // Failure(Val(nan_as_i32)), // Failure(Val(inf_as_u32)), // Failure(Val(inf_as_i32)), // Failure(Val(neg_inf_as_u32)), // Failure(Val(neg_inf_as_i32)), // Failure>(Vec(nan_as_u32, 0_u)), // Failure>(Vec(nan_as_i32, 0_i)), // Failure>(Vec(inf_as_u32, 0_u)), // Failure>(Vec(inf_as_i32, 0_i)), // Failure>(Vec(neg_inf_as_u32, 0_u)), // Failure>(Vec(neg_inf_as_i32, 0_i)), // Failure>(Vec(0_u, nan_as_u32)), // Failure>(Vec(0_i, nan_as_i32)), // Failure>(Vec(0_u, inf_as_u32)), // Failure>(Vec(0_i, inf_as_i32)), // Failure>(Vec(0_u, neg_inf_as_u32)), // Failure>(Vec(0_i, neg_inf_as_i32)), // })); } // namespace } // namespace tint::resolver