Revert "Validate storage class constraints"

This reverts commit fd5829e5ead28012956b214940392407aa455530.

Reason for revert: Temporarily reverting as this is preventing a tint->dawn roll, which is needed to fix the dawn->chrome roll.

Original change's description:
> Validate storage class constraints
>
> As defined by https://gpuweb.github.io/gpuweb/wgsl/#storage-class-layout-constraints
>
> Bug: tint:643
> Change-Id: I9c78ba69a792a80c263a17b0a6e9b4810fdb7f30
> Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/56780
> Kokoro: Kokoro <noreply+kokoro@google.com>
> Commit-Queue: Antonio Maiorano <amaiorano@google.com>
> Reviewed-by: Ben Clayton <bclayton@google.com>

TBR=bclayton@google.com,amaiorano@google.com,noreply+kokoro@google.com,tint-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I8dbd0e46b3e3291ef08797a196d0d9abd2a78845
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: tint:643
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57704
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c545a74..dd3f2d1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -637,7 +637,6 @@
     resolver/resolver_test_helper.cc
     resolver/resolver_test_helper.h
     resolver/resolver_test.cc
-    resolver/storage_class_layout_validation_test.cc
     resolver/storage_class_validation_test.cc
     resolver/struct_layout_test.cc
     resolver/struct_pipeline_stage_use_test.cc
diff --git a/src/inspector/inspector_test.cc b/src/inspector/inspector_test.cc
index 54078d5..2aa1c49 100644
--- a/src/inspector/inspector_test.cc
+++ b/src/inspector/inspector_test.cc
@@ -2239,14 +2239,11 @@
 }
 
 TEST_F(InspectorGetUniformBufferResourceBindingsTest, ContainingArray) {
-  // Manually create uniform buffer to make sure it had a valid layout (array
-  // with elem stride of 16, and that is 16-byte aligned within the struct)
-  ast::Struct* foo_struct_type = Structure(
-      "foo_type",
-      {Member("0__i32", ty.i32()),
-       Member("b", ty.array(ty.u32(), 4, /*stride*/ 16), {MemberAlign(16)})},
-      {create<ast::StructBlockDecoration>()});
-
+  // TODO(bclayton) - This is not a legal structure layout for uniform buffer
+  // usage. Once crbug.com/tint/628 is implemented, this will fail validation
+  // and will need to be fixed.
+  ast::Struct* foo_struct_type =
+      MakeUniformBufferType("foo_type", {ty.i32(), ty.array<u32, 4>()});
   AddUniformBuffer("foo_ub", ty.Of(foo_struct_type), 0, 0);
 
   MakeStructVariableReferenceBodyFunction("ub_func", "foo_ub", {{0, ty.i32()}});
@@ -2266,8 +2263,8 @@
             result[0].resource_type);
   EXPECT_EQ(0u, result[0].bind_group);
   EXPECT_EQ(0u, result[0].binding);
-  EXPECT_EQ(80u, result[0].size);
-  EXPECT_EQ(80u, result[0].size_no_padding);
+  EXPECT_EQ(20u, result[0].size);
+  EXPECT_EQ(20u, result[0].size_no_padding);
 }
 
 TEST_F(InspectorGetStorageBufferResourceBindingsTest, Simple) {
diff --git a/src/program_builder.h b/src/program_builder.h
index 70b356d..f0b0e05 100644
--- a/src/program_builder.h
+++ b/src/program_builder.h
@@ -25,7 +25,6 @@
 #include "src/ast/assignment_statement.h"
 #include "src/ast/atomic.h"
 #include "src/ast/binary_expression.h"
-#include "src/ast/binding_decoration.h"
 #include "src/ast/bitcast_expression.h"
 #include "src/ast/bool.h"
 #include "src/ast/bool_literal.h"
@@ -55,7 +54,6 @@
 #include "src/ast/stage_decoration.h"
 #include "src/ast/storage_texture.h"
 #include "src/ast/stride_decoration.h"
-#include "src/ast/struct_block_decoration.h"
 #include "src/ast/struct_member_align_decoration.h"
 #include "src/ast/struct_member_offset_decoration.h"
 #include "src/ast/struct_member_size_decoration.h"
@@ -1381,9 +1379,7 @@
   /// value.
   /// @returns a new `ast::Variable`, which is automatically registered as a
   /// global variable with the ast::Module.
-  template <typename NAME,
-            typename... OPTIONAL,
-            traits::EnableIfIsNotType<traits::Decay<NAME>, Source>* = nullptr>
+  template <typename NAME, typename... OPTIONAL>
   ast::Variable* Global(NAME&& name,
                         const ast::Type* type,
                         OPTIONAL&&... optional) {
@@ -1680,35 +1676,6 @@
     return create<ast::StructMemberAlignDecoration>(source_, val);
   }
 
-  /// Creates a ast::StructBlockDecoration
-  /// @returns the struct block decoration pointer
-  ast::StructBlockDecoration* StructBlock() {
-    return create<ast::StructBlockDecoration>();
-  }
-
-  /// Creates the ast::GroupDecoration
-  /// @param value group decoration index
-  /// @returns the group decoration pointer
-  ast::GroupDecoration* Group(uint32_t value) {
-    return create<ast::GroupDecoration>(value);
-  }
-
-  /// Creates the ast::BindingDecoration
-  /// @param value the binding index
-  /// @returns the binding deocration pointer
-  ast::BindingDecoration* Binding(uint32_t value) {
-    return create<ast::BindingDecoration>(value);
-  }
-
-  /// Convenience function to create both a ast::GroupDecoration and
-  /// ast::BindingDecoration
-  /// @param group the group index
-  /// @param binding the binding index
-  /// @returns a decoration list with both the group and binding decorations
-  ast::DecorationList GroupAndBinding(uint32_t group, uint32_t binding) {
-    return {Group(group), Binding(binding)};
-  }
-
   /// Creates an ast::Function and registers it with the ast::Module.
   /// @param source the source information
   /// @param name the function name
diff --git a/src/resolver/resolver.cc b/src/resolver/resolver.cc
index 3f1e6f3..fe559f3 100644
--- a/src/resolver/resolver.cc
+++ b/src/resolver/resolver.cc
@@ -15,8 +15,6 @@
 #include "src/resolver/resolver.h"
 
 #include <algorithm>
-#include <cmath>
-#include <iomanip>
 #include <utility>
 
 #include "src/ast/alias.h"
@@ -687,228 +685,6 @@
     return false;
   }
 
-  // TODO(bclayton): Call this at the end of resolve on all uniform and storage
-  // referenced structs
-  if (!ValidateStorageClassLayout(info)) {
-    return false;
-  }
-
-  return true;
-}
-
-bool Resolver::ValidateStorageClassLayout(const sem::Struct* str,
-                                          ast::StorageClass sc) {
-  // https://gpuweb.github.io/gpuweb/wgsl/#storage-class-layout-constraints
-
-  auto is_uniform_struct_or_array = [sc](const sem::Type* ty) {
-    return sc == ast::StorageClass::kUniform &&
-           ty->IsAnyOf<sem::Array, sem::Struct>();
-  };
-
-  auto is_uniform_struct = [sc](const sem::Type* ty) {
-    return sc == ast::StorageClass::kUniform && ty->Is<sem::Struct>();
-  };
-
-  auto required_alignment_of = [&](const sem::Type* ty) {
-    uint32_t actual_align = 0;
-    uint32_t actual_size = 0;
-    DefaultAlignAndSize(ty, actual_align, actual_size);
-    uint32_t required_align = actual_align;
-    if (is_uniform_struct_or_array(ty)) {
-      required_align = utils::RoundUp(16u, actual_align);
-    }
-    return required_align;
-  };
-
-  auto member_name_of = [this](const sem::StructMember* sm) {
-    return builder_->Symbols().NameFor(sm->Declaration()->symbol());
-  };
-
-  auto type_name_of = [this](const sem::StructMember* sm) {
-    return sm->Declaration()->type()->FriendlyName(builder_->Symbols());
-  };
-
-  // TODO(amaiorano): Output struct and member decorations so that this output
-  // can be copied verbatim back into source
-  auto get_struct_layout_string = [&](const sem::Struct* st) -> std::string {
-    std::stringstream ss;
-
-    if (st->Members().empty()) {
-      TINT_ICE(Resolver, diagnostics_) << "Validation should have ensured that "
-                                          "structs have at least one member";
-      return {};
-    }
-    const auto* const last_member = st->Members().back();
-    const uint32_t last_member_struct_padding_offset =
-        last_member->Offset() + last_member->Size();
-
-    // Compute max widths to align output
-    const auto offset_w =
-        static_cast<int>(::log10(last_member_struct_padding_offset)) + 1;
-    const auto size_w = static_cast<int>(::log10(st->Size())) + 1;
-    const auto align_w = static_cast<int>(::log10(st->Align())) + 1;
-
-    auto print_struct_begin_line = [&](size_t align, size_t size,
-                                       std::string struct_name) {
-      ss << "/*          " << std::setw(offset_w) << " "
-         << "align(" << std::setw(align_w) << align << ") size("
-         << std::setw(size_w) << size << ") */ struct " << struct_name
-         << " {\n";
-    };
-
-    auto print_struct_end_line = [&]() {
-      ss << "/*                         "
-         << std::setw(offset_w + size_w + align_w) << " "
-         << "*/ };";
-    };
-
-    auto print_member_line = [&](size_t offset, size_t align, size_t size,
-                                 std::string s) {
-      ss << "/* offset(" << std::setw(offset_w) << offset << ") align("
-         << std::setw(align_w) << align << ") size(" << std::setw(size_w)
-         << size << ") */   " << s << ";\n";
-    };
-
-    print_struct_begin_line(st->Align(), st->Size(),
-                            st->FriendlyName(builder_->Symbols()));
-
-    for (size_t i = 0; i < st->Members().size(); ++i) {
-      auto* const m = st->Members()[i];
-
-      // Output field alignment padding, if any
-      auto* const prev_member = (i == 0) ? nullptr : str->Members()[i - 1];
-      if (prev_member) {
-        uint32_t padding =
-            m->Offset() - (prev_member->Offset() + prev_member->Size());
-        if (padding > 0) {
-          size_t padding_offset = m->Offset() - padding;
-          print_member_line(padding_offset, 1, padding,
-                            "// -- implicit field alignment padding --");
-        }
-      }
-
-      // Output member
-      std::string member_name = member_name_of(m);
-      print_member_line(m->Offset(), m->Align(), m->Size(),
-                        member_name_of(m) + " : " + type_name_of(m));
-    }
-
-    // Output struct size padding, if any
-    uint32_t struct_padding = st->Size() - last_member_struct_padding_offset;
-    if (struct_padding > 0) {
-      print_member_line(last_member_struct_padding_offset, 1, struct_padding,
-                        "// -- implicit struct size padding --");
-    }
-
-    print_struct_end_line();
-
-    return ss.str();
-  };
-
-  if (!ast::IsHostShareable(sc)) {
-    return true;
-  }
-
-  for (size_t i = 0; i < str->Members().size(); ++i) {
-    auto* const m = str->Members()[i];
-    uint32_t required_align = required_alignment_of(m->Type());
-
-    // Validate that member is at a valid byte offset
-    if (m->Offset() % required_align != 0) {
-      AddError("the offset of a struct member of type '" + type_name_of(m) +
-                   "' in storage class '" + ast::str(sc) +
-                   "' must be a multiple of " + std::to_string(required_align) +
-                   " bytes, but '" + member_name_of(m) +
-                   "' is currently at offset " + std::to_string(m->Offset()) +
-                   ". Consider setting [[align(" +
-                   std::to_string(required_align) + ")]] on this member",
-               m->Declaration()->source());
-
-      AddNote("see layout of struct:\n" + get_struct_layout_string(str),
-              str->Declaration()->source());
-
-      if (auto* member_str = m->Type()->As<sem::Struct>()) {
-        AddNote("and layout of struct member:\n" +
-                    get_struct_layout_string(member_str),
-                member_str->Declaration()->source());
-      }
-
-      return false;
-    }
-
-    // For uniform buffers, validate that the number of bytes between the
-    // previous member of type struct and the current is a multiple of 16 bytes.
-    auto* const prev_member = (i == 0) ? nullptr : str->Members()[i - 1];
-    if (prev_member && is_uniform_struct(prev_member->Type())) {
-      const uint32_t prev_to_curr_offset = m->Offset() - prev_member->Offset();
-      if (prev_to_curr_offset % 16 != 0) {
-        AddError(
-            "uniform storage requires that the number of bytes between the "
-            "start of the previous member of type struct and the current "
-            "member be a multiple of 16 bytes, but there are currently " +
-                std::to_string(prev_to_curr_offset) + " bytes between '" +
-                member_name_of(prev_member) + "' and '" + member_name_of(m) +
-                "'. Consider setting [[align(16)]] on this member",
-            m->Declaration()->source());
-
-        AddNote("see layout of struct:\n" + get_struct_layout_string(str),
-                str->Declaration()->source());
-
-        auto* prev_member_str = prev_member->Type()->As<sem::Struct>();
-        AddNote("and layout of previous member struct:\n" +
-                    get_struct_layout_string(prev_member_str),
-                prev_member_str->Declaration()->source());
-        return false;
-      }
-    }
-
-    // For uniform buffer array members, validate that array elements are
-    // aligned to 16 bytes
-    if (auto* arr = m->Type()->As<sem::Array>()) {
-      if (sc == ast::StorageClass::kUniform) {
-        // We already validated that this array member is itself aligned to 16
-        // bytes above, so we only need to validate that stride is a multiple of
-        // 16 bytes.
-        if (arr->Stride() % 16 != 0) {
-          AddError(
-              "uniform storage requires that array elements be aligned to 16 "
-              "bytes, but array stride of '" +
-                  member_name_of(m) + "' is currently " +
-                  std::to_string(arr->Stride()) +
-                  ". Consider setting [[stride(" +
-                  std::to_string(
-                      utils::RoundUp(required_align, arr->Stride())) +
-                  ")]] on the array type",
-              m->Declaration()->type()->source());
-          AddNote("see layout of struct:\n" + get_struct_layout_string(str),
-                  str->Declaration()->source());
-          return false;
-        }
-      }
-    }
-
-    // If member is struct, recurse
-    if (auto* str_member = m->Type()->As<sem::Struct>()) {
-      // Cache result of struct + storage class pair
-      if (valid_struct_storage_layouts_.emplace(str_member, sc).second) {
-        if (!ValidateStorageClassLayout(str_member, sc)) {
-          return false;
-        }
-      }
-    }
-  }
-
-  return true;
-}
-
-bool Resolver::ValidateStorageClassLayout(const VariableInfo* info) {
-  if (auto* str = info->type->UnwrapRef()->As<sem::Struct>()) {
-    if (!ValidateStorageClassLayout(str, info->storage_class)) {
-      AddNote("see declaration of variable", info->declaration->source());
-      return false;
-    }
-  }
-
   return true;
 }
 
@@ -3860,6 +3636,7 @@
   // Validation of storage-class rules requires analysing the actual variable
   // usage of the structure, and so is performed as part of the variable
   // validation.
+  // TODO(crbug.com/tint/628): Actually implement storage-class validation.
   uint32_t struct_size = 0;
   uint32_t struct_align = 1;
 
diff --git a/src/resolver/resolver.h b/src/resolver/resolver.h
index bc3f58f..04b7326 100644
--- a/src/resolver/resolver.h
+++ b/src/resolver/resolver.h
@@ -16,11 +16,9 @@
 #define SRC_RESOLVER_RESOLVER_H_
 
 #include <memory>
-#include <set>
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
-#include <utility>
 #include <vector>
 
 #include "src/intrinsic_table.h"
@@ -124,9 +122,6 @@
     const sem::Intrinsic* intrinsic;
   };
 
-  std::set<std::pair<const sem::Struct*, ast::StorageClass>>
-      valid_struct_storage_layouts_;
-
   /// Structure holding semantic information about a function.
   /// Used to build the sem::Function nodes at the end of resolving.
   struct FunctionInfo {
@@ -317,10 +312,6 @@
                                 const sem::Array* arr_type);
   bool ValidateTypeDecl(const ast::TypeDecl* named_type) const;
   bool ValidateNoDuplicateDecorations(const ast::DecorationList& decorations);
-  // sem::Struct is assumed to have at least one member
-  bool ValidateStorageClassLayout(const sem::Struct* type,
-                                  ast::StorageClass sc);
-  bool ValidateStorageClassLayout(const VariableInfo* info);
 
   /// @returns the sem::Type for the ast::Type `ty`, building it if it
   /// hasn't been constructed already. If an error is raised, nullptr is
diff --git a/src/resolver/storage_class_layout_validation_test.cc b/src/resolver/storage_class_layout_validation_test.cc
deleted file mode 100644
index 5339f13..0000000
--- a/src/resolver/storage_class_layout_validation_test.cc
+++ /dev/null
@@ -1,390 +0,0 @@
-// 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 "gmock/gmock.h"
-#include "src/resolver/resolver_test_helper.h"
-
-namespace tint {
-namespace resolver {
-namespace {
-
-using ResolverStorageClassLayoutValidationTest = ResolverTest;
-
-// Detect unaligned member for storage buffers
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       StorageBuffer_UnalignedMember) {
-  // [[block]]
-  // struct S {
-  //     [[size(5)]] a : f32;
-  //     [[align(1)]] b : f32;
-  // };
-  // [[group(0), binding(0)]]
-  // var<storage> a : S;
-
-  Structure(Source{{12, 34}}, "S",
-            {Member("a", ty.f32(), {MemberSize(5)}),
-             Member(Source{{34, 56}}, "b", ty.f32(), {MemberAlign(1)})},
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("S"), ast::StorageClass::kStorage,
-         GroupAndBinding(0, 0));
-
-  ASSERT_FALSE(r()->Resolve());
-  EXPECT_EQ(
-      r()->error(),
-      R"(34:56 error: the offset of a struct member of type 'f32' in storage class 'storage' must be a multiple of 4 bytes, but 'b' is currently at offset 5. Consider setting [[align(4)]] on this member
-12:34 note: see layout of struct:
-/*           align(4) size(12) */ struct S {
-/* offset(0) align(4) size( 5) */   a : f32;
-/* offset(5) align(1) size( 4) */   b : f32;
-/* offset(9) align(1) size( 3) */   // -- implicit struct size padding --;
-/*                             */ };
-78:90 note: see declaration of variable)");
-}
-
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       StorageBuffer_UnalignedMember_SuggestedFix) {
-  // [[block]]
-  // struct S {
-  //     [[size(5)]] a : f32;
-  //     [[align(4)]] b : f32;
-  // };
-  // [[group(0), binding(0)]]
-  // var<storage> a : S;
-
-  Structure(Source{{12, 34}}, "S",
-            {Member("a", ty.f32(), {MemberSize(5)}),
-             Member(Source{{34, 56}}, "b", ty.f32(), {MemberAlign(4)})},
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("S"), ast::StorageClass::kStorage,
-         GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-// Detect unaligned struct member for uniform buffers
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_UnalignedMember_Struct) {
-  // struct Inner {
-  //   scalar : i32;
-  // };
-  //
-  // [[block]]
-  // struct Outer {
-  //   scalar : f32;
-  //   inner : Inner;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Structure(Source{{12, 34}}, "Inner", {Member("scalar", ty.i32())});
-
-  Structure(Source{{34, 56}}, "Outer",
-            {
-                Member("scalar", ty.f32()),
-                Member(Source{{56, 78}}, "inner", ty.type_name("Inner")),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_FALSE(r()->Resolve());
-  EXPECT_EQ(
-      r()->error(),
-      R"(56:78 error: the offset of a struct member of type 'Inner' in storage class 'uniform' must be a multiple of 16 bytes, but 'inner' is currently at offset 4. Consider setting [[align(16)]] on this member
-34:56 note: see layout of struct:
-/*           align(4) size(8) */ struct Outer {
-/* offset(0) align(4) size(4) */   scalar : f32;
-/* offset(4) align(4) size(4) */   inner : Inner;
-/*                            */ };
-12:34 note: and layout of struct member:
-/*           align(4) size(4) */ struct Inner {
-/* offset(0) align(4) size(4) */   scalar : i32;
-/*                            */ };
-78:90 note: see declaration of variable)");
-}
-
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_UnalignedMember_Struct_SuggestedFix) {
-  // struct Inner {
-  //   scalar : i32;
-  // };
-  //
-  // [[block]]
-  // struct Outer {
-  //   scalar : f32;
-  //   [[align(16)]] inner : Inner;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Structure(Source{{12, 34}}, "Inner", {Member("scalar", ty.i32())});
-
-  Structure(Source{{34, 56}}, "Outer",
-            {
-                Member("scalar", ty.f32()),
-                Member(Source{{56, 78}}, "inner", ty.type_name("Inner"),
-                       {MemberAlign(16)}),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-// Detect unaligned array member for uniform buffers
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_UnalignedMember_Array) {
-  // type Inner = [[stride(16)]] array<f32, 10>;
-  //
-  // [[block]]
-  // struct Outer {
-  //   scalar : f32;
-  //   inner : Inner;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-  Alias("Inner", ty.array(ty.f32(), 10, 16));
-
-  Structure(Source{{12, 34}}, "Outer",
-            {
-                Member("scalar", ty.f32()),
-                Member(Source{{56, 78}}, "inner", ty.type_name("Inner")),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_FALSE(r()->Resolve());
-  EXPECT_EQ(
-      r()->error(),
-      R"(56:78 error: the offset of a struct member of type 'Inner' in storage class 'uniform' must be a multiple of 16 bytes, but 'inner' is currently at offset 4. Consider setting [[align(16)]] on this member
-12:34 note: see layout of struct:
-/*             align(4) size(164) */ struct Outer {
-/* offset(  0) align(4) size(  4) */   scalar : f32;
-/* offset(  4) align(4) size(160) */   inner : Inner;
-/*                                */ };
-78:90 note: see declaration of variable)");
-}
-
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_UnalignedMember_Array_SuggestedFix) {
-  // type Inner = [[stride(16)]] array<f32, 10>;
-  //
-  // [[block]]
-  // struct Outer {
-  //   scalar : f32;
-  //   [[align(16)]] inner : Inner;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-  Alias("Inner", ty.array(ty.f32(), 10, 16));
-
-  Structure(Source{{12, 34}}, "Outer",
-            {
-                Member("scalar", ty.f32()),
-                Member(Source{{34, 56}}, "inner", ty.type_name("Inner"),
-                       {MemberAlign(16)}),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-// Detect uniform buffers with byte offset between 2 members that is not a
-// multiple of 16 bytes
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_MembersOffsetNotMultipleOf16) {
-  // struct Inner {
-  //   [[align(1), size(5)]] scalar : i32;
-  // };
-  //
-  // [[block]]
-  // struct Outer {
-  //   inner : Inner;
-  //   scalar : i32;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Structure(Source{{12, 34}}, "Inner",
-            {Member("scalar", ty.i32(), {MemberAlign(1), MemberSize(5)})});
-
-  Structure(Source{{34, 56}}, "Outer",
-            {
-                Member(Source{{56, 78}}, "inner", ty.type_name("Inner")),
-                Member(Source{{78, 90}}, "scalar", ty.i32()),
-            },
-            {StructBlock()});
-
-  Global(Source{{22, 24}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_FALSE(r()->Resolve());
-  EXPECT_EQ(
-      r()->error(),
-      R"(78:90 error: uniform storage requires that the number of bytes between the start of the previous member of type struct and the current member be a multiple of 16 bytes, but there are currently 8 bytes between 'inner' and 'scalar'. Consider setting [[align(16)]] on this member
-34:56 note: see layout of struct:
-/*            align(4) size(12) */ struct Outer {
-/* offset( 0) align(1) size( 5) */   inner : Inner;
-/* offset( 5) align(1) size( 3) */   // -- implicit field alignment padding --;
-/* offset( 8) align(4) size( 4) */   scalar : i32;
-/*                              */ };
-12:34 note: and layout of previous member struct:
-/*           align(1) size(5) */ struct Inner {
-/* offset(0) align(1) size(5) */   scalar : i32;
-/*                            */ };
-22:24 note: see declaration of variable)");
-}
-
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_MembersOffsetNotMultipleOf16_SuggestedFix) {
-  // struct Inner {
-  //   [[align(1), size(5)]] scalar : i32;
-  // };
-  //
-  // [[block]]
-  // struct Outer {
-  //   [[align(16)]] inner : Inner;
-  //   scalar : i32;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Structure(Source{{12, 34}}, "Inner",
-            {Member("scalar", ty.i32(), {MemberAlign(1), MemberSize(5)})});
-
-  Structure(Source{{34, 56}}, "Outer",
-            {
-                Member(Source{{56, 78}}, "inner", ty.type_name("Inner")),
-                Member(Source{{78, 90}}, "scalar", ty.i32(), {MemberAlign(16)}),
-            },
-            {StructBlock()});
-
-  Global(Source{{22, 34}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-// Make sure that this doesn't fail validation because vec3's align is 16, but
-// size is 12. 's' should be at offset 12, which is okay here.
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_Vec3MemberOffset_NoFail) {
-  // [[block]]
-  // struct ScalarPackedAtEndOfVec3 {
-  //     v : vec3<f32>;
-  //     s : f32;
-  // };
-  // [[group(0), binding(0)]]
-  // var<uniform> a : ScalarPackedAtEndOfVec3;
-
-  Structure("ScalarPackedAtEndOfVec3",
-            {
-                Member("v", ty.vec3(ty.f32())),
-                Member("s", ty.f32()),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("ScalarPackedAtEndOfVec3"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-// Detect array stride must be a multiple of 16 bytes for uniform buffers
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_InvalidArrayStride) {
-  // type Inner = [[stride(8)]] array<f32, 10>;
-  //
-  // [[block]]
-  // struct Outer {
-  //   inner : Inner;
-  //   scalar : i32;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Alias("Inner", ty.array(ty.f32(), 10, 8));
-
-  Structure(Source{{12, 34}}, "Outer",
-            {
-                Member("inner", ty.type_name(Source{{34, 56}}, "Inner")),
-                Member("scalar", ty.i32()),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_FALSE(r()->Resolve());
-  EXPECT_EQ(
-      r()->error(),
-      R"(34:56 error: uniform storage requires that array elements be aligned to 16 bytes, but array stride of 'inner' is currently 8. Consider setting [[stride(16)]] on the array type
-12:34 note: see layout of struct:
-/*            align(4) size(84) */ struct Outer {
-/* offset( 0) align(4) size(80) */   inner : Inner;
-/* offset(80) align(4) size( 4) */   scalar : i32;
-/*                              */ };
-78:90 note: see declaration of variable)");
-}
-
-TEST_F(ResolverStorageClassLayoutValidationTest,
-       UniformBuffer_InvalidArrayStride_SuggestedFix) {
-  // type Inner = [[stride(16)]] array<f32, 10>;
-  //
-  // [[block]]
-  // struct Outer {
-  //   inner : Inner;
-  //   scalar : i32;
-  // };
-  //
-  // [[group(0), binding(0)]]
-  // var<uniform> a : Outer;
-
-  Alias("Inner", ty.array(ty.f32(), 10, 16));
-
-  Structure(Source{{12, 34}}, "Outer",
-            {
-                Member("inner", ty.type_name(Source{{34, 56}}, "Inner")),
-                Member("scalar", ty.i32()),
-            },
-            {StructBlock()});
-
-  Global(Source{{78, 90}}, "a", ty.type_name("Outer"),
-         ast::StorageClass::kUniform, GroupAndBinding(0, 0));
-
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
-}
-
-}  // namespace
-}  // namespace resolver
-}  // namespace tint
diff --git a/src/resolver/storage_class_validation_test.cc b/src/resolver/storage_class_validation_test.cc
index 2d75c1f..c9a1ea5 100644
--- a/src/resolver/storage_class_validation_test.cc
+++ b/src/resolver/storage_class_validation_test.cc
@@ -263,7 +263,7 @@
              create<ast::GroupDecoration>(0),
          });
 
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
+  ASSERT_TRUE(r()->Resolve());
 }
 
 TEST_F(ResolverStorageClassValidationTest, UniformBufferNoError_Aliases) {
@@ -279,7 +279,7 @@
              create<ast::GroupDecoration>(0),
          });
 
-  ASSERT_TRUE(r()->Resolve()) << r()->error();
+  ASSERT_TRUE(r()->Resolve());
 }
 
 }  // namespace
diff --git a/src/transform/array_length_from_uniform.cc b/src/transform/array_length_from_uniform.cc
index 35fbcb9..bb182c9 100644
--- a/src/transform/array_length_from_uniform.cc
+++ b/src/transform/array_length_from_uniform.cc
@@ -67,16 +67,11 @@
   ast::Variable* buffer_size_ubo = nullptr;
   auto get_ubo = [&]() {
     if (!buffer_size_ubo) {
-      // Emit an array<vec4<u32>, N>, where N is 1/4 number of elements.
-      // We do this because UBOs require an element stride that is 16-byte
-      // aligned.
       auto* buffer_size_struct = ctx.dst->Structure(
           ctx.dst->Sym(),
           {ctx.dst->Member(
               kBufferSizeMemberName,
-              ctx.dst->ty.array(ctx.dst->ty.vec4(ctx.dst->ty.u32()),
-                                (max_buffer_size_index / 4) + 1))},
-
+              ctx.dst->ty.array(ctx.dst->ty.u32(), max_buffer_size_index + 1))},
           ast::DecorationList{ctx.dst->create<ast::StructBlockDecoration>()});
       buffer_size_ubo = ctx.dst->Global(
           ctx.dst->Sym(), ctx.dst->ty.Of(buffer_size_struct),
@@ -104,20 +99,18 @@
 
     // Get the storage buffer that contains the runtime array.
     // We assume that the argument to `arrayLength` has the form
-    // `&resource.array`, which requires that `InlinePointerLets` and
-    // `Simplify` have been run before this transform.
+    // `&resource.array`, which requires that `InlinePointerLets` and `Simplify`
+    // have been run before this transform.
     auto* param = call_expr->params()[0]->As<ast::UnaryOpExpression>();
     if (!param || param->op() != ast::UnaryOp::kAddressOf) {
       TINT_ICE(Transform, ctx.dst->Diagnostics())
-          << "expected form of arrayLength argument to be "
-             "&resource.array";
+          << "expected form of arrayLength argument to be &resource.array";
       break;
     }
     auto* accessor = param->expr()->As<ast::MemberAccessorExpression>();
     if (!accessor) {
       TINT_ICE(Transform, ctx.dst->Diagnostics())
-          << "expected form of arrayLength argument to be "
-             "&resource.array";
+          << "expected form of arrayLength argument to be &resource.array";
       break;
     }
     auto* storage_buffer_expr = accessor->structure();
@@ -125,8 +118,7 @@
         sem.Get(storage_buffer_expr)->As<sem::VariableUser>();
     if (!storage_buffer_sem) {
       TINT_ICE(Transform, ctx.dst->Diagnostics())
-          << "expected form of arrayLength argument to be "
-             "&resource.array";
+          << "expected form of arrayLength argument to be &resource.array";
       break;
     }
 
@@ -143,13 +135,9 @@
     }
 
     // Load the total storage buffer size from the UBO.
-    uint32_t array_index = idx_itr->second / 4;
-    auto* vec_expr = ctx.dst->IndexAccessor(
+    auto* total_storage_buffer_size = ctx.dst->IndexAccessor(
         ctx.dst->MemberAccessor(get_ubo()->symbol(), kBufferSizeMemberName),
-        array_index);
-    uint32_t vec_index = idx_itr->second % 4;
-    auto* total_storage_buffer_size =
-        ctx.dst->IndexAccessor(vec_expr, vec_index);
+        idx_itr->second);
 
     // Calculate actual array length
     //                total_storage_buffer_size - array_offset
diff --git a/src/transform/array_length_from_uniform_test.cc b/src/transform/array_length_from_uniform_test.cc
index 6ab39ee..a173de8 100644
--- a/src/transform/array_length_from_uniform_test.cc
+++ b/src/transform/array_length_from_uniform_test.cc
@@ -81,7 +81,7 @@
   auto* expect = R"(
 [[block]]
 struct tint_symbol {
-  buffer_size : array<vec4<u32>, 1>;
+  buffer_size : array<u32, 1>;
 };
 
 [[group(0), binding(30)]] var<uniform> tint_symbol_1 : tint_symbol;
@@ -96,7 +96,7 @@
 
 [[stage(compute), workgroup_size(1)]]
 fn main() {
-  var len : u32 = ((tint_symbol_1.buffer_size[0u][0u] - 4u) / 4u);
+  var len : u32 = ((tint_symbol_1.buffer_size[0u] - 4u) / 4u);
 }
 )";
 
@@ -134,7 +134,7 @@
   auto* expect = R"(
 [[block]]
 struct tint_symbol {
-  buffer_size : array<vec4<u32>, 1>;
+  buffer_size : array<u32, 1>;
 };
 
 [[group(0), binding(30)]] var<uniform> tint_symbol_1 : tint_symbol;
@@ -150,7 +150,7 @@
 
 [[stage(compute), workgroup_size(1)]]
 fn main() {
-  var len : u32 = ((tint_symbol_1.buffer_size[0u][0u] - 8u) / 64u);
+  var len : u32 = ((tint_symbol_1.buffer_size[0u] - 8u) / 64u);
 }
 )";
 
@@ -175,48 +175,29 @@
   x : i32;
   arr1 : array<i32>;
 };
+
 [[block]]
 struct SB2 {
   x : i32;
   arr2 : array<vec4<f32>>;
 };
-[[block]]
-struct SB3 {
-  x : i32;
-  arr3 : array<vec4<f32>>;
-};
-[[block]]
-struct SB4 {
-  x : i32;
-  arr4 : array<vec4<f32>>;
-};
-[[block]]
-struct SB5 {
-  x : i32;
-  arr5 : array<vec4<f32>>;
-};
 
 [[group(0), binding(2)]] var<storage, read> sb1 : SB1;
+
 [[group(1), binding(2)]] var<storage, read> sb2 : SB2;
-[[group(2), binding(2)]] var<storage, read> sb3 : SB3;
-[[group(3), binding(2)]] var<storage, read> sb4 : SB4;
-[[group(4), binding(2)]] var<storage, read> sb5 : SB5;
 
 [[stage(compute), workgroup_size(1)]]
 fn main() {
   var len1 : u32 = arrayLength(&(sb1.arr1));
   var len2 : u32 = arrayLength(&(sb2.arr2));
-  var len3 : u32 = arrayLength(&(sb3.arr3));
-  var len4 : u32 = arrayLength(&(sb4.arr4));
-  var len5 : u32 = arrayLength(&(sb5.arr5));
-  var x : u32 = (len1 + len2 + len3 + len4 + len5);
+  var x : u32 = (len1 + len2);
 }
 )";
 
   auto* expect = R"(
 [[block]]
 struct tint_symbol {
-  buffer_size : array<vec4<u32>, 2>;
+  buffer_size : array<u32, 2>;
 };
 
 [[group(0), binding(30)]] var<uniform> tint_symbol_1 : tint_symbol;
@@ -233,51 +214,21 @@
   arr2 : array<vec4<f32>>;
 };
 
-[[block]]
-struct SB3 {
-  x : i32;
-  arr3 : array<vec4<f32>>;
-};
-
-[[block]]
-struct SB4 {
-  x : i32;
-  arr4 : array<vec4<f32>>;
-};
-
-[[block]]
-struct SB5 {
-  x : i32;
-  arr5 : array<vec4<f32>>;
-};
-
 [[group(0), binding(2)]] var<storage, read> sb1 : SB1;
 
 [[group(1), binding(2)]] var<storage, read> sb2 : SB2;
 
-[[group(2), binding(2)]] var<storage, read> sb3 : SB3;
-
-[[group(3), binding(2)]] var<storage, read> sb4 : SB4;
-
-[[group(4), binding(2)]] var<storage, read> sb5 : SB5;
-
 [[stage(compute), workgroup_size(1)]]
 fn main() {
-  var len1 : u32 = ((tint_symbol_1.buffer_size[0u][0u] - 4u) / 4u);
-  var len2 : u32 = ((tint_symbol_1.buffer_size[0u][1u] - 16u) / 16u);
-  var len3 : u32 = ((tint_symbol_1.buffer_size[0u][2u] - 16u) / 16u);
-  var len4 : u32 = ((tint_symbol_1.buffer_size[0u][3u] - 16u) / 16u);
-  var len5 : u32 = ((tint_symbol_1.buffer_size[1u][0u] - 16u) / 16u);
-  var x : u32 = ((((len1 + len2) + len3) + len4) + len5);
+  var len1 : u32 = ((tint_symbol_1.buffer_size[0u] - 4u) / 4u);
+  var len2 : u32 = ((tint_symbol_1.buffer_size[1u] - 16u) / 16u);
+  var x : u32 = (len1 + len2);
 }
 )";
 
   ArrayLengthFromUniform::Config cfg({0, 30u});
   cfg.bindpoint_to_size_index.emplace(sem::BindingPoint{0, 2u}, 0);
   cfg.bindpoint_to_size_index.emplace(sem::BindingPoint{1u, 2u}, 1);
-  cfg.bindpoint_to_size_index.emplace(sem::BindingPoint{2u, 2u}, 2);
-  cfg.bindpoint_to_size_index.emplace(sem::BindingPoint{3u, 2u}, 3);
-  cfg.bindpoint_to_size_index.emplace(sem::BindingPoint{4u, 2u}, 4);
 
   DataMap data;
   data.Add<ArrayLengthFromUniform::Config>(std::move(cfg));
diff --git a/test/BUILD.gn b/test/BUILD.gn
index 2eebbff..7439a56 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -246,7 +246,6 @@
     "../src/resolver/resolver_test.cc",
     "../src/resolver/resolver_test_helper.cc",
     "../src/resolver/resolver_test_helper.h",
-    "../src/resolver/storage_class_layout_validation_test.cc",
     "../src/resolver/storage_class_validation_test.cc",
     "../src/resolver/struct_layout_test.cc",
     "../src/resolver/struct_pipeline_stage_use_test.cc",
diff --git a/test/intrinsics/arrayLength/complex_via_let.wgsl.expected.msl b/test/intrinsics/arrayLength/complex_via_let.wgsl.expected.msl
index 9c7e44c..d690d24 100644
--- a/test/intrinsics/arrayLength/complex_via_let.wgsl.expected.msl
+++ b/test/intrinsics/arrayLength/complex_via_let.wgsl.expected.msl
@@ -2,14 +2,14 @@
 
 using namespace metal;
 struct tint_symbol_1 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct S {
   /* 0x0000 */ int a[1];
 };
 
 kernel void tint_symbol(constant tint_symbol_1& tint_symbol_2 [[buffer(30)]]) {
-  uint const l1 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
+  uint const l1 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
   return;
 }
 
diff --git a/test/intrinsics/arrayLength/deprecated.wgsl.expected.msl b/test/intrinsics/arrayLength/deprecated.wgsl.expected.msl
index 40f5a45..c86fc59 100644
--- a/test/intrinsics/arrayLength/deprecated.wgsl.expected.msl
+++ b/test/intrinsics/arrayLength/deprecated.wgsl.expected.msl
@@ -2,15 +2,15 @@
 
 using namespace metal;
 struct tint_symbol_1 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct S {
   /* 0x0000 */ int a[1];
 };
 
 kernel void tint_symbol(constant tint_symbol_1& tint_symbol_2 [[buffer(30)]]) {
-  uint const l1 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
-  uint const l2 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
+  uint const l1 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
+  uint const l2 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
   return;
 }
 
diff --git a/test/intrinsics/arrayLength/simple.wgsl.expected.msl b/test/intrinsics/arrayLength/simple.wgsl.expected.msl
index 9c7e44c..d690d24 100644
--- a/test/intrinsics/arrayLength/simple.wgsl.expected.msl
+++ b/test/intrinsics/arrayLength/simple.wgsl.expected.msl
@@ -2,14 +2,14 @@
 
 using namespace metal;
 struct tint_symbol_1 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct S {
   /* 0x0000 */ int a[1];
 };
 
 kernel void tint_symbol(constant tint_symbol_1& tint_symbol_2 [[buffer(30)]]) {
-  uint const l1 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
+  uint const l1 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
   return;
 }
 
diff --git a/test/intrinsics/arrayLength/via_let.wgsl.expected.msl b/test/intrinsics/arrayLength/via_let.wgsl.expected.msl
index 9c7e44c..d690d24 100644
--- a/test/intrinsics/arrayLength/via_let.wgsl.expected.msl
+++ b/test/intrinsics/arrayLength/via_let.wgsl.expected.msl
@@ -2,14 +2,14 @@
 
 using namespace metal;
 struct tint_symbol_1 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct S {
   /* 0x0000 */ int a[1];
 };
 
 kernel void tint_symbol(constant tint_symbol_1& tint_symbol_2 [[buffer(30)]]) {
-  uint const l1 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
+  uint const l1 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
   return;
 }
 
diff --git a/test/intrinsics/arrayLength/via_let_complex.wgsl.expected.msl b/test/intrinsics/arrayLength/via_let_complex.wgsl.expected.msl
index 9c7e44c..d690d24 100644
--- a/test/intrinsics/arrayLength/via_let_complex.wgsl.expected.msl
+++ b/test/intrinsics/arrayLength/via_let_complex.wgsl.expected.msl
@@ -2,14 +2,14 @@
 
 using namespace metal;
 struct tint_symbol_1 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct S {
   /* 0x0000 */ int a[1];
 };
 
 kernel void tint_symbol(constant tint_symbol_1& tint_symbol_2 [[buffer(30)]]) {
-  uint const l1 = ((tint_symbol_2.buffer_size[0u][0u] - 0u) / 4u);
+  uint const l1 = ((tint_symbol_2.buffer_size[0u] - 0u) / 4u);
   return;
 }
 
diff --git a/test/intrinsics/gen/arrayLength/1588cd.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/1588cd.wgsl.expected.msl
index 3553097..4f53a60 100644
--- a/test/intrinsics/gen/arrayLength/1588cd.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/1588cd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[2];
 };
 struct SB_RO {
   /* 0x0000 */ int arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_1588cd(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][1u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[1u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {
diff --git a/test/intrinsics/gen/arrayLength/61b1c7.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/61b1c7.wgsl.expected.msl
index 97d2857..71c7a83 100644
--- a/test/intrinsics/gen/arrayLength/61b1c7.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/61b1c7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct SB_RW {
   /* 0x0000 */ int arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_61b1c7(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][0u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[0u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {
diff --git a/test/intrinsics/gen/arrayLength/a0f5ca.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/a0f5ca.wgsl.expected.msl
index ed94999..ad28d92 100644
--- a/test/intrinsics/gen/arrayLength/a0f5ca.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/a0f5ca.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[2];
 };
 struct SB_RO {
   /* 0x0000 */ float arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_a0f5ca(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][1u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[1u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {
diff --git a/test/intrinsics/gen/arrayLength/cdd123.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/cdd123.wgsl.expected.msl
index 525920c..fdbb89d 100644
--- a/test/intrinsics/gen/arrayLength/cdd123.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/cdd123.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct SB_RW {
   /* 0x0000 */ float arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_cdd123(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][0u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[0u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {
diff --git a/test/intrinsics/gen/arrayLength/cfca0a.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/cfca0a.wgsl.expected.msl
index 97cbb4f..14068e5 100644
--- a/test/intrinsics/gen/arrayLength/cfca0a.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/cfca0a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[2];
 };
 struct SB_RO {
   /* 0x0000 */ uint arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_cfca0a(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][1u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[1u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {
diff --git a/test/intrinsics/gen/arrayLength/eb510f.wgsl.expected.msl b/test/intrinsics/gen/arrayLength/eb510f.wgsl.expected.msl
index d345929..04f8508 100644
--- a/test/intrinsics/gen/arrayLength/eb510f.wgsl.expected.msl
+++ b/test/intrinsics/gen/arrayLength/eb510f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 struct tint_symbol_2 {
-  /* 0x0000 */ uint4 buffer_size[1];
+  /* 0x0000 */ uint buffer_size[1];
 };
 struct SB_RW {
   /* 0x0000 */ uint arg_0[1];
@@ -12,7 +12,7 @@
 };
 
 void arrayLength_eb510f(constant tint_symbol_2& tint_symbol_3) {
-  uint res = ((tint_symbol_3.buffer_size[0u][0u] - 0u) / 4u);
+  uint res = ((tint_symbol_3.buffer_size[0u] - 0u) / 4u);
 }
 
 vertex tint_symbol vertex_main(constant tint_symbol_2& tint_symbol_3 [[buffer(30)]]) {