diff --git a/src/tint/BUILD.gn b/src/tint/BUILD.gn
index 3741764..27ae656 100644
--- a/src/tint/BUILD.gn
+++ b/src/tint/BUILD.gn
@@ -1016,6 +1016,7 @@
 
   tint_unittests_source_set("tint_unittests_ast_src") {
     sources = [
+      "ast/access_test.cc",
       "ast/address_space_test.cc",
       "ast/alias_test.cc",
       "ast/array_test.cc",
diff --git a/src/tint/CMakeLists.txt b/src/tint/CMakeLists.txt
index adcb118..e846756 100644
--- a/src/tint/CMakeLists.txt
+++ b/src/tint/CMakeLists.txt
@@ -535,11 +535,11 @@
   writer/writer.h
 )
 
-tint_generated(ast/access)
+tint_generated(ast/access BENCH TEST)
 tint_generated(ast/address_space BENCH TEST)
 tint_generated(ast/builtin_value BENCH TEST)
 tint_generated(ast/extension BENCH TEST)
-tint_generated(ast/interpolate_attribute)
+tint_generated(ast/interpolate_attribute BENCH TEST)
 tint_generated(ast/texel_format BENCH TEST)
 tint_generated(resolver/init_conv_intrinsic)
 tint_generated(sem/builtin_type)
@@ -809,7 +809,6 @@
     ast/increment_decrement_statement_test.cc
     ast/index_accessor_expression_test.cc
     ast/int_literal_expression_test.cc
-    ast/interpolate_attribute_test.cc
     ast/invariant_attribute_test.cc
     ast/location_attribute_test.cc
     ast/loop_statement_test.cc
diff --git a/src/tint/ast/access_bench.cc b/src/tint/ast/access_bench.cc
new file mode 100644
index 0000000..46b4f93
--- /dev/null
+++ b/src/tint/ast/access_bench.cc
@@ -0,0 +1,51 @@
+// 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.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   src/tint/ast/access_bench.cc.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+#include "src/tint/ast/access.h"
+
+#include <array>
+
+#include "benchmark/benchmark.h"
+
+namespace tint::ast {
+namespace {
+
+void AccessParser(::benchmark::State& state) {
+    std::array kStrings{
+        "ccad",       "3",           "rVad",         "read",       "1ead",
+        "rqaJ",       "rlla77",      "reqqdppriHHe", "rv_wcit",    "reabGwrte",
+        "read_write", "read_vriite", "re8d_wriWWe",  "Meadxxrite", "wggte",
+        "VtX",        "writ3",       "write",        "writE",      "TTrPte",
+        "wxxidd",
+    };
+    for (auto _ : state) {
+        for (auto& str : kStrings) {
+            auto result = ParseAccess(str);
+            benchmark::DoNotOptimize(result);
+        }
+    }
+}
+
+BENCHMARK(AccessParser);
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/access_bench.cc.tmpl b/src/tint/ast/access_bench.cc.tmpl
new file mode 100644
index 0000000..e4ef341
--- /dev/null
+++ b/src/tint/ast/access_bench.cc.tmpl
@@ -0,0 +1,29 @@
+{{- /*
+--------------------------------------------------------------------------------
+Template file for use with tools/src/cmd/gen to generate access_bench.cc
+
+To update the generated file, run:
+    ./tools/run gen
+
+See:
+* tools/src/cmd/gen for structures used by this template
+* https://golang.org/pkg/text/template/ for documentation on the template syntax
+--------------------------------------------------------------------------------
+*/ -}}
+
+{{- Import "src/tint/templates/enums.tmpl.inc" -}}
+{{- $enum := (Sem.Enum "access") -}}
+
+#include "src/tint/ast/access.h"
+
+#include <array>
+
+#include "benchmark/benchmark.h"
+
+namespace tint::ast {
+namespace {
+
+{{ Eval "BenchmarkParseEnum" $enum }}
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/access_test.cc b/src/tint/ast/access_test.cc
new file mode 100644
index 0000000..017915d
--- /dev/null
+++ b/src/tint/ast/access_test.cc
@@ -0,0 +1,82 @@
+// 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.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   src/tint/ast/access_test.cc.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+#include "src/tint/ast/access.h"
+
+#include <string>
+
+#include "src/tint/ast/test_helper.h"
+#include "src/tint/utils/string.h"
+
+namespace tint::ast {
+namespace {
+
+namespace parse_print_tests {
+
+struct Case {
+    const char* string;
+    Access value;
+};
+
+inline std::ostream& operator<<(std::ostream& out, Case c) {
+    return out << "'" << std::string(c.string) << "'";
+}
+
+static constexpr Case kValidCases[] = {
+    {"read", Access::kRead},
+    {"read_write", Access::kReadWrite},
+    {"write", Access::kWrite},
+};
+
+static constexpr Case kInvalidCases[] = {
+    {"ccad", Access::kUndefined},       {"3", Access::kUndefined},
+    {"rVad", Access::kUndefined},       {"read1write", Access::kUndefined},
+    {"reaJqqrite", Access::kUndefined}, {"rea7ll_write", Access::kUndefined},
+    {"wrqHtpp", Access::kUndefined},    {"ve", Access::kUndefined},
+    {"Grbe", Access::kUndefined},
+};
+
+using AccessParseTest = testing::TestWithParam<Case>;
+
+TEST_P(AccessParseTest, Parse) {
+    const char* string = GetParam().string;
+    Access expect = GetParam().value;
+    EXPECT_EQ(expect, ParseAccess(string));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases, AccessParseTest, testing::ValuesIn(kValidCases));
+INSTANTIATE_TEST_SUITE_P(InvalidCases, AccessParseTest, testing::ValuesIn(kInvalidCases));
+
+using AccessPrintTest = testing::TestWithParam<Case>;
+
+TEST_P(AccessPrintTest, Print) {
+    Access value = GetParam().value;
+    const char* expect = GetParam().string;
+    EXPECT_EQ(expect, utils::ToString(value));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases, AccessPrintTest, testing::ValuesIn(kValidCases));
+
+}  // namespace parse_print_tests
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/access_test.cc.tmpl b/src/tint/ast/access_test.cc.tmpl
new file mode 100644
index 0000000..9b4b71a
--- /dev/null
+++ b/src/tint/ast/access_test.cc.tmpl
@@ -0,0 +1,30 @@
+{{- /*
+--------------------------------------------------------------------------------
+Template file for use with tools/src/cmd/gen to generate access_test.cc
+
+To update the generated file, run:
+    ./tools/run gen
+
+See:
+* tools/src/cmd/gen for structures used by this template
+* https://golang.org/pkg/text/template/ for documentation on the template syntax
+--------------------------------------------------------------------------------
+*/ -}}
+
+{{- Import "src/tint/templates/enums.tmpl.inc" -}}
+{{- $enum := (Sem.Enum "access") -}}
+
+#include "src/tint/ast/access.h"
+
+#include <string>
+
+#include "src/tint/ast/test_helper.h"
+#include "src/tint/utils/string.h"
+
+namespace tint::ast {
+namespace {
+
+{{ Eval "TestParsePrintEnum" $enum}}
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/interpolate_attribute_bench.cc b/src/tint/ast/interpolate_attribute_bench.cc
new file mode 100644
index 0000000..6382139
--- /dev/null
+++ b/src/tint/ast/interpolate_attribute_bench.cc
@@ -0,0 +1,67 @@
+// 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.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   src/tint/ast/interpolate_attribute_bench.cc.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+#include "src/tint/ast/interpolate_attribute.h"
+
+#include <array>
+
+#include "benchmark/benchmark.h"
+
+namespace tint::ast {
+namespace {
+
+void InterpolationTypeParser(::benchmark::State& state) {
+    std::array kStrings{
+        "ccat",         "3",           "fVat",        "flat",        "1lat",
+        "fqaJ",         "flla77",      "lippeHHr",    "cin",         "lbGea",
+        "linear",       "liveaii",     "liWWe8r",     "xxiner",      "perggpctXve",
+        "ueVspXtve",    "3erspective", "perspective", "perspectivE", "peTTspectiPe",
+        "pxxdrspectve",
+    };
+    for (auto _ : state) {
+        for (auto& str : kStrings) {
+            auto result = ParseInterpolationType(str);
+            benchmark::DoNotOptimize(result);
+        }
+    }
+}
+
+BENCHMARK(InterpolationTypeParser);
+
+void InterpolationSamplingParser(::benchmark::State& state) {
+    std::array kStrings{
+        "44enter", "cSSVVter",     "centRr",     "center",   "ent9r",  "cente",   "VentORr",
+        "cenyroi", "77errtrllnid", "04entroid",  "centroid", "enooid", "centzzd", "ceiippr1i",
+        "saXXple", "55IImpnn99",   "aHHrrmplSS", "sample",   "kkle",   "jagRR",   "smbe",
+    };
+    for (auto _ : state) {
+        for (auto& str : kStrings) {
+            auto result = ParseInterpolationSampling(str);
+            benchmark::DoNotOptimize(result);
+        }
+    }
+}
+
+BENCHMARK(InterpolationSamplingParser);
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/interpolate_attribute_bench.cc.tmpl b/src/tint/ast/interpolate_attribute_bench.cc.tmpl
new file mode 100644
index 0000000..b75fe44
--- /dev/null
+++ b/src/tint/ast/interpolate_attribute_bench.cc.tmpl
@@ -0,0 +1,27 @@
+{{- /*
+--------------------------------------------------------------------------------
+Template file for use with tools/src/cmd/gen to generate interpolate_attribute_bench.cc
+
+See:
+* tools/src/cmd/gen for structures used by this template
+* https://golang.org/pkg/text/template/ for documentation on the template syntax
+--------------------------------------------------------------------------------
+*/ -}}
+
+{{- Import "src/tint/templates/enums.tmpl.inc" -}}
+
+#include "src/tint/ast/interpolate_attribute.h"
+
+#include <array>
+
+#include "benchmark/benchmark.h"
+
+namespace tint::ast {
+namespace {
+
+{{ Eval "BenchmarkParseEnum" (Sem.Enum "interpolation_type")}}
+
+{{ Eval "BenchmarkParseEnum" (Sem.Enum "interpolation_sampling")}}
+
+}  // namespace
+}  // namespace tint::ast
diff --git a/src/tint/ast/interpolate_attribute_test.cc b/src/tint/ast/interpolate_attribute_test.cc
index d8b6601..6c1204f 100644
--- a/src/tint/ast/interpolate_attribute_test.cc
+++ b/src/tint/ast/interpolate_attribute_test.cc
@@ -12,9 +12,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   src/tint/ast/interpolate_attribute_test.cc.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
 #include "src/tint/ast/interpolate_attribute.h"
 
+#include <string>
+
 #include "src/tint/ast/test_helper.h"
+#include "src/tint/utils/string.h"
 
 namespace tint::ast {
 namespace {
@@ -28,5 +39,117 @@
     EXPECT_EQ(InterpolationSampling::kCenter, d->sampling);
 }
 
+namespace interpolation_type_tests {
+
+namespace parse_print_tests {
+
+struct Case {
+    const char* string;
+    InterpolationType value;
+};
+
+inline std::ostream& operator<<(std::ostream& out, Case c) {
+    return out << "'" << std::string(c.string) << "'";
+}
+
+static constexpr Case kValidCases[] = {
+    {"flat", InterpolationType::kFlat},
+    {"linear", InterpolationType::kLinear},
+    {"perspective", InterpolationType::kPerspective},
+};
+
+static constexpr Case kInvalidCases[] = {
+    {"ccat", InterpolationType::kUndefined},          {"3", InterpolationType::kUndefined},
+    {"fVat", InterpolationType::kUndefined},          {"1inear", InterpolationType::kUndefined},
+    {"lnqqar", InterpolationType::kUndefined},        {"linell77", InterpolationType::kUndefined},
+    {"perppHqective", InterpolationType::kUndefined}, {"cespctve", InterpolationType::kUndefined},
+    {"ebGpective", InterpolationType::kUndefined},
+};
+
+using InterpolationTypeParseTest = testing::TestWithParam<Case>;
+
+TEST_P(InterpolationTypeParseTest, Parse) {
+    const char* string = GetParam().string;
+    InterpolationType expect = GetParam().value;
+    EXPECT_EQ(expect, ParseInterpolationType(string));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases, InterpolationTypeParseTest, testing::ValuesIn(kValidCases));
+INSTANTIATE_TEST_SUITE_P(InvalidCases,
+                         InterpolationTypeParseTest,
+                         testing::ValuesIn(kInvalidCases));
+
+using InterpolationTypePrintTest = testing::TestWithParam<Case>;
+
+TEST_P(InterpolationTypePrintTest, Print) {
+    InterpolationType value = GetParam().value;
+    const char* expect = GetParam().string;
+    EXPECT_EQ(expect, utils::ToString(value));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases, InterpolationTypePrintTest, testing::ValuesIn(kValidCases));
+
+}  // namespace parse_print_tests
+
+}  // namespace interpolation_type_tests
+
+namespace interpolation_sampling_tests {
+
+namespace parse_print_tests {
+
+struct Case {
+    const char* string;
+    InterpolationSampling value;
+};
+
+inline std::ostream& operator<<(std::ostream& out, Case c) {
+    return out << "'" << std::string(c.string) << "'";
+}
+
+static constexpr Case kValidCases[] = {
+    {"center", InterpolationSampling::kCenter},
+    {"centroid", InterpolationSampling::kCentroid},
+    {"sample", InterpolationSampling::kSample},
+};
+
+static constexpr Case kInvalidCases[] = {
+    {"cevteii", InterpolationSampling::kUndefined}, {"ceWWt8r", InterpolationSampling::kUndefined},
+    {"xxentr", InterpolationSampling::kUndefined},  {"ceXggrid", InterpolationSampling::kUndefined},
+    {"ceXriu", InterpolationSampling::kUndefined},  {"centr3id", InterpolationSampling::kUndefined},
+    {"sEmple", InterpolationSampling::kUndefined},  {"amTTlPP", InterpolationSampling::kUndefined},
+    {"ddamxxl", InterpolationSampling::kUndefined},
+};
+
+using InterpolationSamplingParseTest = testing::TestWithParam<Case>;
+
+TEST_P(InterpolationSamplingParseTest, Parse) {
+    const char* string = GetParam().string;
+    InterpolationSampling expect = GetParam().value;
+    EXPECT_EQ(expect, ParseInterpolationSampling(string));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases,
+                         InterpolationSamplingParseTest,
+                         testing::ValuesIn(kValidCases));
+INSTANTIATE_TEST_SUITE_P(InvalidCases,
+                         InterpolationSamplingParseTest,
+                         testing::ValuesIn(kInvalidCases));
+
+using InterpolationSamplingPrintTest = testing::TestWithParam<Case>;
+
+TEST_P(InterpolationSamplingPrintTest, Print) {
+    InterpolationSampling value = GetParam().value;
+    const char* expect = GetParam().string;
+    EXPECT_EQ(expect, utils::ToString(value));
+}
+
+INSTANTIATE_TEST_SUITE_P(ValidCases,
+                         InterpolationSamplingPrintTest,
+                         testing::ValuesIn(kValidCases));
+
+}  // namespace parse_print_tests
+
+}  // namespace interpolation_sampling_tests
+
 }  // namespace
 }  // namespace tint::ast
diff --git a/src/tint/ast/interpolate_attribute_test.cc.tmpl b/src/tint/ast/interpolate_attribute_test.cc.tmpl
new file mode 100644
index 0000000..1adc9ab
--- /dev/null
+++ b/src/tint/ast/interpolate_attribute_test.cc.tmpl
@@ -0,0 +1,45 @@
+{{- /*
+--------------------------------------------------------------------------------
+Template file for use with tools/src/cmd/gen to generate interpolate_attribute_test.cc
+
+See:
+* tools/src/cmd/gen for structures used by this template
+* https://golang.org/pkg/text/template/ for documentation on the template syntax
+--------------------------------------------------------------------------------
+*/ -}}
+
+{{- Import "src/tint/templates/enums.tmpl.inc" -}}
+
+#include "src/tint/ast/interpolate_attribute.h"
+
+#include <string>
+
+#include "src/tint/ast/test_helper.h"
+#include "src/tint/utils/string.h"
+
+namespace tint::ast {
+namespace {
+
+using InterpolateAttributeTest = TestHelper;
+
+TEST_F(InterpolateAttributeTest, Creation) {
+    auto* d =
+        create<InterpolateAttribute>(InterpolationType::kLinear, InterpolationSampling::kCenter);
+    EXPECT_EQ(InterpolationType::kLinear, d->type);
+    EXPECT_EQ(InterpolationSampling::kCenter, d->sampling);
+}
+
+namespace interpolation_type_tests {
+
+{{ Eval "TestParsePrintEnum" (Sem.Enum "interpolation_type")}}
+
+}  // namespace interpolation_type_tests
+
+namespace interpolation_sampling_tests {
+
+{{ Eval "TestParsePrintEnum" (Sem.Enum "interpolation_sampling")}}
+
+}  // namespace interpolation_sampling_tests
+
+}  // namespace
+}  // namespace tint::ast