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dawn-cmake/src/resolver/resolver_constants_test.cc
Ben Clayton 71f619b6f1 [resolver]: Begin constant value evaluation 
Move the bulk of the constant evaulation logic out of transform::FoldConstants and into Resolver and sem::Expression.

transform::FoldConstants now replace TypeConstructor nodes that have a constant value on the expression.

This is ground work to:
* Cleaning up the HLSL uniform buffer indexing, which is `/` and `%` arithmatic heavy
* Prepares us to handle `constexpr` when it lands in the spec
* Provide a centralized place to do constant evaluation, instead of the
  having similar logic scattered around the codebase.

Change-Id: I3e2f542be692046a8d243b62a82556db519953e7
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57426
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: James Price <jrprice@google.com>
2021-07-13 12:18:13 +00:00

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// Copyright 2021 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/resolver/resolver.h"
#include "gtest/gtest.h"
#include "src/resolver/resolver_test_helper.h"
#include "src/sem/expression.h"
namespace tint {
namespace resolver {
namespace {
using Scalar = sem::Constant::Scalar;
using ResolverConstantsTest = ResolverTest;
TEST_F(ResolverConstantsTest, Scalar_i32) {
auto* expr = Expr(99);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
EXPECT_TRUE(sem->Type()->Is<sem::I32>());
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_EQ(sem->ConstantValue().ElementType(), sem->Type());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 99);
}
TEST_F(ResolverConstantsTest, Scalar_u32) {
auto* expr = Expr(99u);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
EXPECT_TRUE(sem->Type()->Is<sem::U32>());
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_EQ(sem->ConstantValue().ElementType(), sem->Type());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].u32, 99u);
}
TEST_F(ResolverConstantsTest, Scalar_f32) {
auto* expr = Expr(9.9f);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
EXPECT_TRUE(sem->Type()->Is<sem::F32>());
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_EQ(sem->ConstantValue().ElementType(), sem->Type());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 9.9f);
}
TEST_F(ResolverConstantsTest, Scalar_bool) {
auto* expr = Expr(true);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
EXPECT_TRUE(sem->Type()->Is<sem::Bool>());
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_EQ(sem->ConstantValue().ElementType(), sem->Type());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].bool_, true);
}
TEST_F(ResolverConstantsTest, Vec3_ZeroInit_i32) {
auto* expr = vec3<i32>();
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::I32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::I32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 0);
EXPECT_EQ(sem->ConstantValue().Elements()[1].i32, 0);
EXPECT_EQ(sem->ConstantValue().Elements()[2].i32, 0);
}
TEST_F(ResolverConstantsTest, Vec3_ZeroInit_u32) {
auto* expr = vec3<u32>();
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::U32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::U32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].u32, 0u);
EXPECT_EQ(sem->ConstantValue().Elements()[1].u32, 0u);
EXPECT_EQ(sem->ConstantValue().Elements()[2].u32, 0u);
}
TEST_F(ResolverConstantsTest, Vec3_ZeroInit_f32) {
auto* expr = vec3<f32>();
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::F32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::F32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 0u);
EXPECT_EQ(sem->ConstantValue().Elements()[1].f32, 0u);
EXPECT_EQ(sem->ConstantValue().Elements()[2].f32, 0u);
}
TEST_F(ResolverConstantsTest, Vec3_ZeroInit_bool) {
auto* expr = vec3<bool>();
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::Bool>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::Bool>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].bool_, false);
EXPECT_EQ(sem->ConstantValue().Elements()[1].bool_, false);
EXPECT_EQ(sem->ConstantValue().Elements()[2].bool_, false);
}
TEST_F(ResolverConstantsTest, Vec3_Splat_i32) {
auto* expr = vec3<i32>(99);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::I32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::I32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 99);
EXPECT_EQ(sem->ConstantValue().Elements()[1].i32, 99);
EXPECT_EQ(sem->ConstantValue().Elements()[2].i32, 99);
}
TEST_F(ResolverConstantsTest, Vec3_Splat_u32) {
auto* expr = vec3<u32>(99u);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::U32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::U32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].u32, 99u);
EXPECT_EQ(sem->ConstantValue().Elements()[1].u32, 99u);
EXPECT_EQ(sem->ConstantValue().Elements()[2].u32, 99u);
}
TEST_F(ResolverConstantsTest, Vec3_Splat_f32) {
auto* expr = vec3<f32>(9.9f);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::F32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::F32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 9.9f);
EXPECT_EQ(sem->ConstantValue().Elements()[1].f32, 9.9f);
EXPECT_EQ(sem->ConstantValue().Elements()[2].f32, 9.9f);
}
TEST_F(ResolverConstantsTest, Vec3_Splat_bool) {
auto* expr = vec3<bool>(true);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::Bool>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::Bool>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].bool_, true);
EXPECT_EQ(sem->ConstantValue().Elements()[1].bool_, true);
EXPECT_EQ(sem->ConstantValue().Elements()[2].bool_, true);
}
TEST_F(ResolverConstantsTest, Vec3_FullConstruct_i32) {
auto* expr = vec3<i32>(1, 2, 3);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::I32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::I32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 1);
EXPECT_EQ(sem->ConstantValue().Elements()[1].i32, 2);
EXPECT_EQ(sem->ConstantValue().Elements()[2].i32, 3);
}
TEST_F(ResolverConstantsTest, Vec3_FullConstruct_u32) {
auto* expr = vec3<u32>(1u, 2u, 3u);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::U32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::U32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].u32, 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[1].u32, 2u);
EXPECT_EQ(sem->ConstantValue().Elements()[2].u32, 3u);
}
TEST_F(ResolverConstantsTest, Vec3_FullConstruct_f32) {
auto* expr = vec3<f32>(1.f, 2.f, 3.f);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::F32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::F32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 1.f);
EXPECT_EQ(sem->ConstantValue().Elements()[1].f32, 2.f);
EXPECT_EQ(sem->ConstantValue().Elements()[2].f32, 3.f);
}
TEST_F(ResolverConstantsTest, Vec3_FullConstruct_bool) {
auto* expr = vec3<bool>(true, false, true);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::Bool>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::Bool>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].bool_, true);
EXPECT_EQ(sem->ConstantValue().Elements()[1].bool_, false);
EXPECT_EQ(sem->ConstantValue().Elements()[2].bool_, true);
}
TEST_F(ResolverConstantsTest, Vec3_MixConstruct_i32) {
auto* expr = vec3<i32>(1, vec2<i32>(2, 3));
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::I32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::I32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 1);
EXPECT_EQ(sem->ConstantValue().Elements()[1].i32, 2);
EXPECT_EQ(sem->ConstantValue().Elements()[2].i32, 3);
}
TEST_F(ResolverConstantsTest, Vec3_MixConstruct_u32) {
auto* expr = vec3<u32>(vec2<u32>(1u, 2u), 3u);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::U32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::U32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].u32, 1u);
EXPECT_EQ(sem->ConstantValue().Elements()[1].u32, 2u);
EXPECT_EQ(sem->ConstantValue().Elements()[2].u32, 3u);
}
TEST_F(ResolverConstantsTest, Vec3_MixConstruct_f32) {
auto* expr = vec3<f32>(1.f, vec2<f32>(2.f, 3.f));
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::F32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::F32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 1.f);
EXPECT_EQ(sem->ConstantValue().Elements()[1].f32, 2.f);
EXPECT_EQ(sem->ConstantValue().Elements()[2].f32, 3.f);
}
TEST_F(ResolverConstantsTest, Vec3_MixConstruct_bool) {
auto* expr = vec3<bool>(vec2<bool>(true, false), true);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::Bool>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::Bool>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].bool_, true);
EXPECT_EQ(sem->ConstantValue().Elements()[1].bool_, false);
EXPECT_EQ(sem->ConstantValue().Elements()[2].bool_, true);
}
TEST_F(ResolverConstantsTest, Vec3_Cast_f32_to_32) {
auto* expr = vec3<i32>(vec3<f32>(1.1f, 2.2f, 3.3f));
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::I32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::I32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].i32, 1);
EXPECT_EQ(sem->ConstantValue().Elements()[1].i32, 2);
EXPECT_EQ(sem->ConstantValue().Elements()[2].i32, 3);
}
TEST_F(ResolverConstantsTest, Vec3_Cast_u32_to_f32) {
auto* expr = vec3<f32>(vec3<u32>(10u, 20u, 30u));
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem = Sem().Get(expr);
EXPECT_NE(sem, nullptr);
ASSERT_TRUE(sem->Type()->Is<sem::Vector>());
EXPECT_TRUE(sem->Type()->As<sem::Vector>()->type()->Is<sem::F32>());
EXPECT_EQ(sem->Type()->As<sem::Vector>()->size(), 3u);
EXPECT_EQ(sem->ConstantValue().Type(), sem->Type());
EXPECT_TRUE(sem->ConstantValue().ElementType()->Is<sem::F32>());
ASSERT_EQ(sem->ConstantValue().Elements().size(), 3u);
EXPECT_EQ(sem->ConstantValue().Elements()[0].f32, 10.f);
EXPECT_EQ(sem->ConstantValue().Elements()[1].f32, 20.f);
EXPECT_EQ(sem->ConstantValue().Elements()[2].f32, 30.f);
}
} // namespace
} // namespace resolver
} // namespace tint
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