src/tint/lang/wgsl/resolver/const_eval_member_access_test.cc - dawn - Git at Google

 // 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/lang/wgsl/resolver/const_eval_test.h"

 namespace tint::resolver {
 namespace {

 using namespace tint::builtin::fluent_types;  // NOLINT
 using namespace tint::number_suffixes;        // NOLINT

 TEST_F(ResolverConstEvalTest, StructMemberAccess) {
     Structure("Inner", utils::Vector{
                            Member("i1", ty.i32()),
                            Member("i2", ty.u32()),
                            Member("i3", ty.f32()),
                            Member("i4", ty.bool_()),
                        });

     Structure("Outer", utils::Vector{
                            Member("o1", ty("Inner")),
                            Member("o2", ty("Inner")),
                        });
     auto* outer_expr = Call("Outer",  //
                             Call("Inner", 1_i, 2_u, 3_f, true), Call("Inner"));
     auto* o1_expr = MemberAccessor(outer_expr, "o1");
     auto* i2_expr = MemberAccessor(o1_expr, "i2");
     WrapInFunction(i2_expr);

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* outer = Sem().Get(outer_expr);
     ASSERT_NE(outer, nullptr);
     auto* str = outer->Type()->As<type::Struct>();
     ASSERT_NE(str, nullptr);
     EXPECT_EQ(str->Members().Length(), 2u);
     ASSERT_NE(outer->ConstantValue(), nullptr);
     EXPECT_TYPE(outer->ConstantValue()->Type(), outer->Type());
     EXPECT_TRUE(outer->ConstantValue()->AnyZero());
     EXPECT_FALSE(outer->ConstantValue()->AllZero());

     auto* o1 = Sem().Get(o1_expr);
     ASSERT_NE(o1->ConstantValue(), nullptr);
     EXPECT_FALSE(o1->ConstantValue()->AnyZero());
     EXPECT_FALSE(o1->ConstantValue()->AllZero());
     EXPECT_TRUE(o1->ConstantValue()->Type()->Is<type::Struct>());
     EXPECT_EQ(o1->ConstantValue()->Index(0)->ValueAs<i32>(), 1_i);
     EXPECT_EQ(o1->ConstantValue()->Index(1)->ValueAs<u32>(), 2_u);
     EXPECT_EQ(o1->ConstantValue()->Index(2)->ValueAs<f32>(), 3_f);
     EXPECT_EQ(o1->ConstantValue()->Index(2)->ValueAs<bool>(), true);

     auto* i2 = Sem().Get(i2_expr);
     ASSERT_NE(i2->ConstantValue(), nullptr);
     EXPECT_FALSE(i2->ConstantValue()->AnyZero());
     EXPECT_FALSE(i2->ConstantValue()->AllZero());
     EXPECT_TRUE(i2->ConstantValue()->Type()->Is<type::U32>());
     EXPECT_EQ(i2->ConstantValue()->ValueAs<u32>(), 2_u);
 }

 TEST_F(ResolverConstEvalTest, Matrix_AFloat_Construct_From_AInt_Vectors) {
     auto* c = Const("a", Call<mat2x2<Infer>>(              //
                              Call<vec2<Infer>>(1_a, 2_a),  //
                              Call<vec2<Infer>>(3_a, 4_a)));
     WrapInFunction(c);

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* sem = Sem().Get(c);
     ASSERT_NE(sem, nullptr);
     EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
     auto* cv = sem->ConstantValue();
     EXPECT_TYPE(cv->Type(), sem->Type());
     EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
     EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::AbstractFloat>());
     EXPECT_FALSE(cv->AnyZero());
     EXPECT_FALSE(cv->AllZero());
     auto* c0 = cv->Index(0);
     auto* c1 = cv->Index(1);
     EXPECT_EQ(c0->Index(0)->ValueAs<AFloat>(), 1.0);
     EXPECT_EQ(c0->Index(1)->ValueAs<AFloat>(), 2.0);
     EXPECT_EQ(c1->Index(0)->ValueAs<AFloat>(), 3.0);
     EXPECT_EQ(c1->Index(1)->ValueAs<AFloat>(), 4.0);
 }

 TEST_F(ResolverConstEvalTest, MatrixMemberAccess_AFloat) {
     auto* c = Const("a", Call<mat2x3<Infer>>(                         //
                              Call<vec3<Infer>>(1.0_a, 2.0_a, 3.0_a),  //
                              Call<vec3<Infer>>(4.0_a, 5.0_a, 6.0_a)));

     auto* col_0 = Const("col_0", IndexAccessor("a", 0_i));
     auto* col_1 = Const("col_1", IndexAccessor("a", 1_i));
     auto* e00 = Const("e00", IndexAccessor("col_0", 0_i));
     auto* e01 = Const("e01", IndexAccessor("col_0", 1_i));
     auto* e02 = Const("e02", IndexAccessor("col_0", 2_i));
     auto* e10 = Const("e10", IndexAccessor("col_1", 0_i));
     auto* e11 = Const("e11", IndexAccessor("col_1", 1_i));
     auto* e12 = Const("e12", IndexAccessor("col_1", 2_i));

     (void)col_0;
     (void)col_1;

     WrapInFunction(c, col_0, col_1, e00, e01, e02, e10, e11, e12);

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* sem = Sem().Get(c);
     ASSERT_NE(sem, nullptr);
     EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
     auto* cv = sem->ConstantValue();
     EXPECT_TYPE(cv->Type(), sem->Type());
     EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
     EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::AbstractFloat>());
     EXPECT_FALSE(cv->AnyZero());
     EXPECT_FALSE(cv->AllZero());

     auto* sem_col0 = Sem().Get(col_0);
     ASSERT_NE(sem_col0, nullptr);
     EXPECT_TRUE(sem_col0->Type()->Is<type::Vector>());
     EXPECT_EQ(sem_col0->ConstantValue()->Index(0)->ValueAs<AFloat>(), 1.0);
     EXPECT_EQ(sem_col0->ConstantValue()->Index(1)->ValueAs<AFloat>(), 2.0);
     EXPECT_EQ(sem_col0->ConstantValue()->Index(2)->ValueAs<AFloat>(), 3.0);

     auto* sem_col1 = Sem().Get(col_1);
     ASSERT_NE(sem_col1, nullptr);
     EXPECT_TRUE(sem_col1->Type()->Is<type::Vector>());
     EXPECT_EQ(sem_col1->ConstantValue()->Index(0)->ValueAs<AFloat>(), 4.0);
     EXPECT_EQ(sem_col1->ConstantValue()->Index(1)->ValueAs<AFloat>(), 5.0);
     EXPECT_EQ(sem_col1->ConstantValue()->Index(2)->ValueAs<AFloat>(), 6.0);

     auto* sem_e00 = Sem().Get(e00);
     ASSERT_NE(sem_e00, nullptr);
     EXPECT_TRUE(sem_e00->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e00->ConstantValue()->ValueAs<AFloat>(), 1.0);

     auto* sem_e01 = Sem().Get(e01);
     ASSERT_NE(sem_e01, nullptr);
     EXPECT_TRUE(sem_e01->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e01->ConstantValue()->ValueAs<AFloat>(), 2.0);

     auto* sem_e02 = Sem().Get(e02);
     ASSERT_NE(sem_e02, nullptr);
     EXPECT_TRUE(sem_e02->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e02->ConstantValue()->ValueAs<AFloat>(), 3.0);

     auto* sem_e10 = Sem().Get(e10);
     ASSERT_NE(sem_e10, nullptr);
     EXPECT_TRUE(sem_e10->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e10->ConstantValue()->ValueAs<AFloat>(), 4.0);

     auto* sem_e11 = Sem().Get(e11);
     ASSERT_NE(sem_e11, nullptr);
     EXPECT_TRUE(sem_e11->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e11->ConstantValue()->ValueAs<AFloat>(), 5.0);

     auto* sem_e12 = Sem().Get(e12);
     ASSERT_NE(sem_e12, nullptr);
     EXPECT_TRUE(sem_e12->Type()->Is<type::AbstractFloat>());
     EXPECT_EQ(sem_e12->ConstantValue()->ValueAs<AFloat>(), 6.0);
 }

 TEST_F(ResolverConstEvalTest, MatrixMemberAccess_f32) {
     auto* c = Const("a", Call<mat2x3<Infer>>(                         //
                              Call<vec3<Infer>>(1.0_f, 2.0_f, 3.0_f),  //
                              Call<vec3<Infer>>(4.0_f, 5.0_f, 6.0_f)));

     auto* col_0 = Const("col_0", IndexAccessor("a", 0_i));
     auto* col_1 = Const("col_1", IndexAccessor("a", 1_i));
     auto* e00 = Const("e00", IndexAccessor("col_0", 0_i));
     auto* e01 = Const("e01", IndexAccessor("col_0", 1_i));
     auto* e02 = Const("e02", IndexAccessor("col_0", 2_i));
     auto* e10 = Const("e10", IndexAccessor("col_1", 0_i));
     auto* e11 = Const("e11", IndexAccessor("col_1", 1_i));
     auto* e12 = Const("e12", IndexAccessor("col_1", 2_i));

     (void)col_0;
     (void)col_1;

     WrapInFunction(c, col_0, col_1, e00, e01, e02, e10, e11, e12);

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* sem = Sem().Get(c);
     ASSERT_NE(sem, nullptr);
     EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
     auto* cv = sem->ConstantValue();
     EXPECT_TYPE(cv->Type(), sem->Type());
     EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
     EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::F32>());
     EXPECT_FALSE(cv->AnyZero());
     EXPECT_FALSE(cv->AllZero());

     auto* sem_col0 = Sem().Get(col_0);
     ASSERT_NE(sem_col0, nullptr);
     EXPECT_TRUE(sem_col0->Type()->Is<type::Vector>());
     EXPECT_EQ(sem_col0->ConstantValue()->Index(0)->ValueAs<f32>(), 1.0f);
     EXPECT_EQ(sem_col0->ConstantValue()->Index(1)->ValueAs<f32>(), 2.0f);
     EXPECT_EQ(sem_col0->ConstantValue()->Index(2)->ValueAs<f32>(), 3.0f);

     auto* sem_col1 = Sem().Get(col_1);
     ASSERT_NE(sem_col1, nullptr);
     EXPECT_TRUE(sem_col1->Type()->Is<type::Vector>());
     EXPECT_EQ(sem_col1->ConstantValue()->Index(0)->ValueAs<f32>(), 4.0f);
     EXPECT_EQ(sem_col1->ConstantValue()->Index(1)->ValueAs<f32>(), 5.0f);
     EXPECT_EQ(sem_col1->ConstantValue()->Index(2)->ValueAs<f32>(), 6.0f);

     auto* sem_e00 = Sem().Get(e00);
     ASSERT_NE(sem_e00, nullptr);
     EXPECT_TRUE(sem_e00->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e00->ConstantValue()->ValueAs<f32>(), 1.0f);

     auto* sem_e01 = Sem().Get(e01);
     ASSERT_NE(sem_e01, nullptr);
     EXPECT_TRUE(sem_e01->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e01->ConstantValue()->ValueAs<f32>(), 2.0f);

     auto* sem_e02 = Sem().Get(e02);
     ASSERT_NE(sem_e02, nullptr);
     EXPECT_TRUE(sem_e02->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e02->ConstantValue()->ValueAs<f32>(), 3.0f);

     auto* sem_e10 = Sem().Get(e10);
     ASSERT_NE(sem_e10, nullptr);
     EXPECT_TRUE(sem_e10->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e10->ConstantValue()->ValueAs<f32>(), 4.0f);

     auto* sem_e11 = Sem().Get(e11);
     ASSERT_NE(sem_e11, nullptr);
     EXPECT_TRUE(sem_e11->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e11->ConstantValue()->ValueAs<f32>(), 5.0f);

     auto* sem_e12 = Sem().Get(e12);
     ASSERT_NE(sem_e12, nullptr);
     EXPECT_TRUE(sem_e12->Type()->Is<type::F32>());
     EXPECT_EQ(sem_e12->ConstantValue()->ValueAs<f32>(), 6.0f);
 }

 namespace ArrayAccess {
 struct Case {
     Value input;
 };
 static Case C(Value input) {
     return Case{std::move(input)};
 }
 static std::ostream& operator<<(std::ostream& o, const Case& c) {
     return o << "input: " << c.input;
 }

 using ResolverConstEvalArrayAccessTest = ResolverTestWithParam<Case>;
 TEST_P(ResolverConstEvalArrayAccessTest, Test) {
     Enable(builtin::Extension::kF16);

     auto& param = GetParam();
     auto* expr = param.input.Expr(*this);
     auto* a = Const("a", expr);

     utils::Vector<const ast::IndexAccessorExpression*, 4> index_accessors;
     for (size_t i = 0; i < param.input.args.Length(); ++i) {
         auto* index = IndexAccessor("a", Expr(i32(i)));
         index_accessors.Push(index);
     }

     utils::Vector<const ast::Statement*, 5> stmts;
     stmts.Push(WrapInStatement(a));
     for (auto* ia : index_accessors) {
         stmts.Push(WrapInStatement(ia));
     }
     WrapInFunction(std::move(stmts));

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* sem = Sem().GetVal(expr);
     ASSERT_NE(sem, nullptr);
     auto* arr = sem->Type()->As<type::Array>();
     ASSERT_NE(arr, nullptr);

     EXPECT_TYPE(sem->ConstantValue()->Type(), sem->Type());
     for (size_t i = 0; i < index_accessors.Length(); ++i) {
         auto* ia_sem = Sem().Get(index_accessors[i]);
         ASSERT_NE(ia_sem, nullptr);
         ASSERT_NE(ia_sem->ConstantValue(), nullptr);
         EXPECT_EQ(ia_sem->ConstantValue()->ValueAs<AInt>(), i);
     }
 }
 template <typename T>
 std::vector<Case> ArrayAccessCases() {
     if constexpr (std::is_same_v<T, bool>) {
         return {
             C(Array(false, true)),
         };
     } else {
         return {
             C(Array(T(0))),                          //
             C(Array(T(0), T(1))),                    //
             C(Array(T(0), T(1), T(2))),              //
             C(Array(T(0), T(1), T(2), T(3))),        //
             C(Array(T(0), T(1), T(2), T(3), T(4))),  //
         };
     }
 }
 INSTANTIATE_TEST_SUITE_P(  //
     ArrayAccess,
     ResolverConstEvalArrayAccessTest,
     testing::ValuesIn(Concat(ArrayAccessCases<AInt>(),    //
                              ArrayAccessCases<AFloat>(),  //
                              ArrayAccessCases<i32>(),     //
                              ArrayAccessCases<u32>(),     //
                              ArrayAccessCases<f32>(),     //
                              ArrayAccessCases<f16>(),     //
                              ArrayAccessCases<bool>())));
 }  // namespace ArrayAccess

 namespace VectorAccess {
 struct Case {
     Value input;
 };
 static Case C(Value input) {
     return Case{std::move(input)};
 }
 static std::ostream& operator<<(std::ostream& o, const Case& c) {
     return o << "input: " << c.input;
 }

 using ResolverConstEvalVectorAccessTest = ResolverTestWithParam<Case>;
 TEST_P(ResolverConstEvalVectorAccessTest, Test) {
     Enable(builtin::Extension::kF16);

     auto& param = GetParam();
     auto* expr = param.input.Expr(*this);
     auto* a = Const("a", expr);

     utils::Vector<const ast::IndexAccessorExpression*, 4> index_accessors;
     for (size_t i = 0; i < param.input.args.Length(); ++i) {
         auto* index = IndexAccessor("a", Expr(i32(i)));
         index_accessors.Push(index);
     }

     utils::Vector<const ast::Statement*, 5> stmts;
     stmts.Push(WrapInStatement(a));
     for (auto* ia : index_accessors) {
         stmts.Push(WrapInStatement(ia));
     }
     WrapInFunction(std::move(stmts));

     EXPECT_TRUE(r()->Resolve()) << r()->error();

     auto* sem = Sem().GetVal(expr);
     ASSERT_NE(sem, nullptr);
     auto* vec = sem->Type()->As<type::Vector>();
     ASSERT_NE(vec, nullptr);

     EXPECT_TYPE(sem->ConstantValue()->Type(), sem->Type());
     for (size_t i = 0; i < index_accessors.Length(); ++i) {
         auto* ia_sem = Sem().Get(index_accessors[i]);
         ASSERT_NE(ia_sem, nullptr);
         ASSERT_NE(ia_sem->ConstantValue(), nullptr);
         EXPECT_EQ(ia_sem->ConstantValue()->ValueAs<AInt>(), i);
     }
 }
 template <typename T>
 std::vector<Case> VectorAccessCases() {
     if constexpr (std::is_same_v<T, bool>) {
         return {
             C(Vec(false, true)),
         };
     } else {
         return {
             C(Vec(T(0), T(1))),              //
             C(Vec(T(0), T(1), T(2))),        //
             C(Vec(T(0), T(1), T(2), T(3))),  //
         };
     }
 }
 INSTANTIATE_TEST_SUITE_P(  //
     VectorAccess,
     ResolverConstEvalVectorAccessTest,
     testing::ValuesIn(Concat(VectorAccessCases<AInt>(),    //
                              VectorAccessCases<AFloat>(),  //
                              VectorAccessCases<i32>(),     //
                              VectorAccessCases<u32>(),     //
                              VectorAccessCases<f32>(),     //
                              VectorAccessCases<f16>(),     //
                              VectorAccessCases<bool>())));
 }  // namespace VectorAccess

 }  // namespace
 }  // namespace tint::resolver
	// 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/lang/wgsl/resolver/const_eval_test.h"

	namespace tint::resolver {
	namespace {

	using namespace tint::builtin::fluent_types; // NOLINT
	using namespace tint::number_suffixes; // NOLINT

	TEST_F(ResolverConstEvalTest, StructMemberAccess) {
	Structure("Inner", utils::Vector{
	Member("i1", ty.i32()),
	Member("i2", ty.u32()),
	Member("i3", ty.f32()),
	Member("i4", ty.bool_()),
	});

	Structure("Outer", utils::Vector{
	Member("o1", ty("Inner")),
	Member("o2", ty("Inner")),
	});
	auto* outer_expr = Call("Outer", //
	Call("Inner", 1_i, 2_u, 3_f, true), Call("Inner"));
	auto* o1_expr = MemberAccessor(outer_expr, "o1");
	auto* i2_expr = MemberAccessor(o1_expr, "i2");
	WrapInFunction(i2_expr);

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* outer = Sem().Get(outer_expr);
	ASSERT_NE(outer, nullptr);
	auto* str = outer->Type()->As<type::Struct>();
	ASSERT_NE(str, nullptr);
	EXPECT_EQ(str->Members().Length(), 2u);
	ASSERT_NE(outer->ConstantValue(), nullptr);
	EXPECT_TYPE(outer->ConstantValue()->Type(), outer->Type());
	EXPECT_TRUE(outer->ConstantValue()->AnyZero());
	EXPECT_FALSE(outer->ConstantValue()->AllZero());

	auto* o1 = Sem().Get(o1_expr);
	ASSERT_NE(o1->ConstantValue(), nullptr);
	EXPECT_FALSE(o1->ConstantValue()->AnyZero());
	EXPECT_FALSE(o1->ConstantValue()->AllZero());
	EXPECT_TRUE(o1->ConstantValue()->Type()->Is<type::Struct>());
	EXPECT_EQ(o1->ConstantValue()->Index(0)->ValueAs<i32>(), 1_i);
	EXPECT_EQ(o1->ConstantValue()->Index(1)->ValueAs<u32>(), 2_u);
	EXPECT_EQ(o1->ConstantValue()->Index(2)->ValueAs<f32>(), 3_f);
	EXPECT_EQ(o1->ConstantValue()->Index(2)->ValueAs<bool>(), true);

	auto* i2 = Sem().Get(i2_expr);
	ASSERT_NE(i2->ConstantValue(), nullptr);
	EXPECT_FALSE(i2->ConstantValue()->AnyZero());
	EXPECT_FALSE(i2->ConstantValue()->AllZero());
	EXPECT_TRUE(i2->ConstantValue()->Type()->Is<type::U32>());
	EXPECT_EQ(i2->ConstantValue()->ValueAs<u32>(), 2_u);
	}

	TEST_F(ResolverConstEvalTest, Matrix_AFloat_Construct_From_AInt_Vectors) {
	auto* c = Const("a", Call<mat2x2<Infer>>( //
	Call<vec2<Infer>>(1_a, 2_a), //
	Call<vec2<Infer>>(3_a, 4_a)));
	WrapInFunction(c);

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* sem = Sem().Get(c);
	ASSERT_NE(sem, nullptr);
	EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
	auto* cv = sem->ConstantValue();
	EXPECT_TYPE(cv->Type(), sem->Type());
	EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
	EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::AbstractFloat>());
	EXPECT_FALSE(cv->AnyZero());
	EXPECT_FALSE(cv->AllZero());
	auto* c0 = cv->Index(0);
	auto* c1 = cv->Index(1);
	EXPECT_EQ(c0->Index(0)->ValueAs<AFloat>(), 1.0);
	EXPECT_EQ(c0->Index(1)->ValueAs<AFloat>(), 2.0);
	EXPECT_EQ(c1->Index(0)->ValueAs<AFloat>(), 3.0);
	EXPECT_EQ(c1->Index(1)->ValueAs<AFloat>(), 4.0);
	}

	TEST_F(ResolverConstEvalTest, MatrixMemberAccess_AFloat) {
	auto* c = Const("a", Call<mat2x3<Infer>>( //
	Call<vec3<Infer>>(1.0_a, 2.0_a, 3.0_a), //
	Call<vec3<Infer>>(4.0_a, 5.0_a, 6.0_a)));

	auto* col_0 = Const("col_0", IndexAccessor("a", 0_i));
	auto* col_1 = Const("col_1", IndexAccessor("a", 1_i));
	auto* e00 = Const("e00", IndexAccessor("col_0", 0_i));
	auto* e01 = Const("e01", IndexAccessor("col_0", 1_i));
	auto* e02 = Const("e02", IndexAccessor("col_0", 2_i));
	auto* e10 = Const("e10", IndexAccessor("col_1", 0_i));
	auto* e11 = Const("e11", IndexAccessor("col_1", 1_i));
	auto* e12 = Const("e12", IndexAccessor("col_1", 2_i));

	(void)col_0;
	(void)col_1;

	WrapInFunction(c, col_0, col_1, e00, e01, e02, e10, e11, e12);

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* sem = Sem().Get(c);
	ASSERT_NE(sem, nullptr);
	EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
	auto* cv = sem->ConstantValue();
	EXPECT_TYPE(cv->Type(), sem->Type());
	EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
	EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::AbstractFloat>());
	EXPECT_FALSE(cv->AnyZero());
	EXPECT_FALSE(cv->AllZero());

	auto* sem_col0 = Sem().Get(col_0);
	ASSERT_NE(sem_col0, nullptr);
	EXPECT_TRUE(sem_col0->Type()->Is<type::Vector>());
	EXPECT_EQ(sem_col0->ConstantValue()->Index(0)->ValueAs<AFloat>(), 1.0);
	EXPECT_EQ(sem_col0->ConstantValue()->Index(1)->ValueAs<AFloat>(), 2.0);
	EXPECT_EQ(sem_col0->ConstantValue()->Index(2)->ValueAs<AFloat>(), 3.0);

	auto* sem_col1 = Sem().Get(col_1);
	ASSERT_NE(sem_col1, nullptr);
	EXPECT_TRUE(sem_col1->Type()->Is<type::Vector>());
	EXPECT_EQ(sem_col1->ConstantValue()->Index(0)->ValueAs<AFloat>(), 4.0);
	EXPECT_EQ(sem_col1->ConstantValue()->Index(1)->ValueAs<AFloat>(), 5.0);
	EXPECT_EQ(sem_col1->ConstantValue()->Index(2)->ValueAs<AFloat>(), 6.0);

	auto* sem_e00 = Sem().Get(e00);
	ASSERT_NE(sem_e00, nullptr);
	EXPECT_TRUE(sem_e00->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e00->ConstantValue()->ValueAs<AFloat>(), 1.0);

	auto* sem_e01 = Sem().Get(e01);
	ASSERT_NE(sem_e01, nullptr);
	EXPECT_TRUE(sem_e01->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e01->ConstantValue()->ValueAs<AFloat>(), 2.0);

	auto* sem_e02 = Sem().Get(e02);
	ASSERT_NE(sem_e02, nullptr);
	EXPECT_TRUE(sem_e02->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e02->ConstantValue()->ValueAs<AFloat>(), 3.0);

	auto* sem_e10 = Sem().Get(e10);
	ASSERT_NE(sem_e10, nullptr);
	EXPECT_TRUE(sem_e10->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e10->ConstantValue()->ValueAs<AFloat>(), 4.0);

	auto* sem_e11 = Sem().Get(e11);
	ASSERT_NE(sem_e11, nullptr);
	EXPECT_TRUE(sem_e11->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e11->ConstantValue()->ValueAs<AFloat>(), 5.0);

	auto* sem_e12 = Sem().Get(e12);
	ASSERT_NE(sem_e12, nullptr);
	EXPECT_TRUE(sem_e12->Type()->Is<type::AbstractFloat>());
	EXPECT_EQ(sem_e12->ConstantValue()->ValueAs<AFloat>(), 6.0);
	}

	TEST_F(ResolverConstEvalTest, MatrixMemberAccess_f32) {
	auto* c = Const("a", Call<mat2x3<Infer>>( //
	Call<vec3<Infer>>(1.0_f, 2.0_f, 3.0_f), //
	Call<vec3<Infer>>(4.0_f, 5.0_f, 6.0_f)));

	auto* col_0 = Const("col_0", IndexAccessor("a", 0_i));
	auto* col_1 = Const("col_1", IndexAccessor("a", 1_i));
	auto* e00 = Const("e00", IndexAccessor("col_0", 0_i));
	auto* e01 = Const("e01", IndexAccessor("col_0", 1_i));
	auto* e02 = Const("e02", IndexAccessor("col_0", 2_i));
	auto* e10 = Const("e10", IndexAccessor("col_1", 0_i));
	auto* e11 = Const("e11", IndexAccessor("col_1", 1_i));
	auto* e12 = Const("e12", IndexAccessor("col_1", 2_i));

	(void)col_0;
	(void)col_1;

	WrapInFunction(c, col_0, col_1, e00, e01, e02, e10, e11, e12);

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* sem = Sem().Get(c);
	ASSERT_NE(sem, nullptr);
	EXPECT_TRUE(sem->Type()->Is<type::Matrix>());
	auto* cv = sem->ConstantValue();
	EXPECT_TYPE(cv->Type(), sem->Type());
	EXPECT_TRUE(cv->Index(0)->Type()->Is<type::Vector>());
	EXPECT_TRUE(cv->Index(0)->Index(0)->Type()->Is<type::F32>());
	EXPECT_FALSE(cv->AnyZero());
	EXPECT_FALSE(cv->AllZero());

	auto* sem_col0 = Sem().Get(col_0);
	ASSERT_NE(sem_col0, nullptr);
	EXPECT_TRUE(sem_col0->Type()->Is<type::Vector>());
	EXPECT_EQ(sem_col0->ConstantValue()->Index(0)->ValueAs<f32>(), 1.0f);
	EXPECT_EQ(sem_col0->ConstantValue()->Index(1)->ValueAs<f32>(), 2.0f);
	EXPECT_EQ(sem_col0->ConstantValue()->Index(2)->ValueAs<f32>(), 3.0f);

	auto* sem_col1 = Sem().Get(col_1);
	ASSERT_NE(sem_col1, nullptr);
	EXPECT_TRUE(sem_col1->Type()->Is<type::Vector>());
	EXPECT_EQ(sem_col1->ConstantValue()->Index(0)->ValueAs<f32>(), 4.0f);
	EXPECT_EQ(sem_col1->ConstantValue()->Index(1)->ValueAs<f32>(), 5.0f);
	EXPECT_EQ(sem_col1->ConstantValue()->Index(2)->ValueAs<f32>(), 6.0f);

	auto* sem_e00 = Sem().Get(e00);
	ASSERT_NE(sem_e00, nullptr);
	EXPECT_TRUE(sem_e00->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e00->ConstantValue()->ValueAs<f32>(), 1.0f);

	auto* sem_e01 = Sem().Get(e01);
	ASSERT_NE(sem_e01, nullptr);
	EXPECT_TRUE(sem_e01->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e01->ConstantValue()->ValueAs<f32>(), 2.0f);

	auto* sem_e02 = Sem().Get(e02);
	ASSERT_NE(sem_e02, nullptr);
	EXPECT_TRUE(sem_e02->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e02->ConstantValue()->ValueAs<f32>(), 3.0f);

	auto* sem_e10 = Sem().Get(e10);
	ASSERT_NE(sem_e10, nullptr);
	EXPECT_TRUE(sem_e10->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e10->ConstantValue()->ValueAs<f32>(), 4.0f);

	auto* sem_e11 = Sem().Get(e11);
	ASSERT_NE(sem_e11, nullptr);
	EXPECT_TRUE(sem_e11->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e11->ConstantValue()->ValueAs<f32>(), 5.0f);

	auto* sem_e12 = Sem().Get(e12);
	ASSERT_NE(sem_e12, nullptr);
	EXPECT_TRUE(sem_e12->Type()->Is<type::F32>());
	EXPECT_EQ(sem_e12->ConstantValue()->ValueAs<f32>(), 6.0f);
	}

	namespace ArrayAccess {
	struct Case {
	Value input;
	};
	static Case C(Value input) {
	return Case{std::move(input)};
	}
	static std::ostream& operator<<(std::ostream& o, const Case& c) {
	return o << "input: " << c.input;
	}

	using ResolverConstEvalArrayAccessTest = ResolverTestWithParam<Case>;
	TEST_P(ResolverConstEvalArrayAccessTest, Test) {
	Enable(builtin::Extension::kF16);

	auto& param = GetParam();
	auto* expr = param.input.Expr(*this);
	auto* a = Const("a", expr);

	utils::Vector<const ast::IndexAccessorExpression*, 4> index_accessors;
	for (size_t i = 0; i < param.input.args.Length(); ++i) {
	auto* index = IndexAccessor("a", Expr(i32(i)));
	index_accessors.Push(index);
	}

	utils::Vector<const ast::Statement*, 5> stmts;
	stmts.Push(WrapInStatement(a));
	for (auto* ia : index_accessors) {
	stmts.Push(WrapInStatement(ia));
	}
	WrapInFunction(std::move(stmts));

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* sem = Sem().GetVal(expr);
	ASSERT_NE(sem, nullptr);
	auto* arr = sem->Type()->As<type::Array>();
	ASSERT_NE(arr, nullptr);

	EXPECT_TYPE(sem->ConstantValue()->Type(), sem->Type());
	for (size_t i = 0; i < index_accessors.Length(); ++i) {
	auto* ia_sem = Sem().Get(index_accessors[i]);
	ASSERT_NE(ia_sem, nullptr);
	ASSERT_NE(ia_sem->ConstantValue(), nullptr);
	EXPECT_EQ(ia_sem->ConstantValue()->ValueAs<AInt>(), i);
	}
	}
	template <typename T>
	std::vector<Case> ArrayAccessCases() {
	if constexpr (std::is_same_v<T, bool>) {
	return {
	C(Array(false, true)),
	};
	} else {
	return {
	C(Array(T(0))), //
	C(Array(T(0), T(1))), //
	C(Array(T(0), T(1), T(2))), //
	C(Array(T(0), T(1), T(2), T(3))), //
	C(Array(T(0), T(1), T(2), T(3), T(4))), //
	};
	}
	}
	INSTANTIATE_TEST_SUITE_P( //
	ArrayAccess,
	ResolverConstEvalArrayAccessTest,
	testing::ValuesIn(Concat(ArrayAccessCases<AInt>(), //
	ArrayAccessCases<AFloat>(), //
	ArrayAccessCases<i32>(), //
	ArrayAccessCases<u32>(), //
	ArrayAccessCases<f32>(), //
	ArrayAccessCases<f16>(), //
	ArrayAccessCases<bool>())));
	} // namespace ArrayAccess

	namespace VectorAccess {
	struct Case {
	Value input;
	};
	static Case C(Value input) {
	return Case{std::move(input)};
	}
	static std::ostream& operator<<(std::ostream& o, const Case& c) {
	return o << "input: " << c.input;
	}

	using ResolverConstEvalVectorAccessTest = ResolverTestWithParam<Case>;
	TEST_P(ResolverConstEvalVectorAccessTest, Test) {
	Enable(builtin::Extension::kF16);

	auto& param = GetParam();
	auto* expr = param.input.Expr(*this);
	auto* a = Const("a", expr);

	utils::Vector<const ast::IndexAccessorExpression*, 4> index_accessors;
	for (size_t i = 0; i < param.input.args.Length(); ++i) {
	auto* index = IndexAccessor("a", Expr(i32(i)));
	index_accessors.Push(index);
	}

	utils::Vector<const ast::Statement*, 5> stmts;
	stmts.Push(WrapInStatement(a));
	for (auto* ia : index_accessors) {
	stmts.Push(WrapInStatement(ia));
	}
	WrapInFunction(std::move(stmts));

	EXPECT_TRUE(r()->Resolve()) << r()->error();

	auto* sem = Sem().GetVal(expr);
	ASSERT_NE(sem, nullptr);
	auto* vec = sem->Type()->As<type::Vector>();
	ASSERT_NE(vec, nullptr);

	EXPECT_TYPE(sem->ConstantValue()->Type(), sem->Type());
	for (size_t i = 0; i < index_accessors.Length(); ++i) {
	auto* ia_sem = Sem().Get(index_accessors[i]);
	ASSERT_NE(ia_sem, nullptr);
	ASSERT_NE(ia_sem->ConstantValue(), nullptr);
	EXPECT_EQ(ia_sem->ConstantValue()->ValueAs<AInt>(), i);
	}
	}
	template <typename T>
	std::vector<Case> VectorAccessCases() {
	if constexpr (std::is_same_v<T, bool>) {
	return {
	C(Vec(false, true)),
	};
	} else {
	return {
	C(Vec(T(0), T(1))), //
	C(Vec(T(0), T(1), T(2))), //
	C(Vec(T(0), T(1), T(2), T(3))), //
	};
	}
	}
	INSTANTIATE_TEST_SUITE_P( //
	VectorAccess,
	ResolverConstEvalVectorAccessTest,
	testing::ValuesIn(Concat(VectorAccessCases<AInt>(), //
	VectorAccessCases<AFloat>(), //
	VectorAccessCases<i32>(), //
	VectorAccessCases<u32>(), //
	VectorAccessCases<f32>(), //
	VectorAccessCases<f16>(), //
	VectorAccessCases<bool>())));
	} // namespace VectorAccess

	} // namespace
	} // namespace tint::resolver