Remove the "image" storage class

This doesn't exist in WGSL, and we don't have a supported path to
implement this in MSL.

This was preventing "image" from being used as an identifier.

Change-Id: I724e46c866a4dd488f45fbc1215ef23a67355a78
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78280
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: David Neto <dneto@google.com>

src/ast/storage_class.cc

@@ -35,8 +35,6 @@ const char* ToString(StorageClass sc) {
       return "uniform_constant";
     case StorageClass::kStorage:
       return "storage";
-    case StorageClass::kImage:
-      return "image";
     case StorageClass::kPrivate:
       return "private";
     case StorageClass::kFunction:

src/ast/storage_class.h

@@ -30,7 +30,6 @@ enum class StorageClass {
   kWorkgroup,
   kUniformConstant,
   kStorage,
-  kImage,
   kPrivate,
   kFunction
 };

src/reader/spirv/enum_converter.cc

@@ -52,8 +52,6 @@ ast::StorageClass EnumConverter::ToStorageClass(const SpvStorageClass sc) {
       return ast::StorageClass::kNone;
     case SpvStorageClassStorageBuffer:
       return ast::StorageClass::kStorage;
-    case SpvStorageClassImage:
-      return ast::StorageClass::kImage;
     case SpvStorageClassPrivate:
       return ast::StorageClass::kPrivate;
     case SpvStorageClassFunction:

src/reader/spirv/enum_converter_test.cc

@@ -134,8 +134,8 @@ TEST_P(SpvStorageClassTest, Samples) {
 INSTANTIATE_TEST_SUITE_P(
     EnumConverterGood,
     SpvStorageClassTest,
-    testing::Values(
+    testing::Values(StorageClassCase{SpvStorageClassInput, true,
-        StorageClassCase{SpvStorageClassInput, true, ast::StorageClass::kInput},
+                                     ast::StorageClass::kInput},
                     StorageClassCase{SpvStorageClassOutput, true,
                                      ast::StorageClass::kOutput},
                     StorageClassCase{SpvStorageClassUniform, true,
@@ -146,7 +146,6 @@ INSTANTIATE_TEST_SUITE_P(
                                      ast::StorageClass::kNone},
                     StorageClassCase{SpvStorageClassStorageBuffer, true,
                                      ast::StorageClass::kStorage},
-        StorageClassCase{SpvStorageClassImage, true, ast::StorageClass::kImage},
                     StorageClassCase{SpvStorageClassPrivate, true,
                                      ast::StorageClass::kPrivate},
                     StorageClassCase{SpvStorageClassFunction, true,

src/reader/spirv/parser_impl.cc

@@ -1483,7 +1483,6 @@ bool ParserImpl::EmitModuleScopeVariables() {
       case ast::StorageClass::kUniform:
       case ast::StorageClass::kUniformConstant:
       case ast::StorageClass::kStorage:
-      case ast::StorageClass::kImage:
       case ast::StorageClass::kWorkgroup:
       case ast::StorageClass::kPrivate:
         break;

src/reader/spirv/parser_impl_convert_type_test.cc

@@ -833,22 +833,6 @@ TEST_F(SpvParserTest, ConvertType_PointerStorageBuffer) {
   EXPECT_TRUE(p->error().empty());
 }
 
-TEST_F(SpvParserTest, ConvertType_PointerImage) {
-  auto p = parser(test::Assemble(Preamble() + R"(
-  %float = OpTypeFloat 32
-  %3 = OpTypePointer Image %float
-  )" + MainBody()));
-  EXPECT_TRUE(p->BuildInternalModule());
-
-  auto* type = p->ConvertType(3);
-  EXPECT_TRUE(type->Is<Pointer>());
-  auto* ptr_ty = type->As<Pointer>();
-  EXPECT_NE(ptr_ty, nullptr);
-  EXPECT_TRUE(ptr_ty->type->Is<F32>());
-  EXPECT_EQ(ptr_ty->storage_class, ast::StorageClass::kImage);
-  EXPECT_TRUE(p->error().empty());
-}
-
 TEST_F(SpvParserTest, ConvertType_PointerPrivate) {
   auto p = parser(test::Assemble(Preamble() + R"(
   %float = OpTypeFloat 32

src/reader/wgsl/lexer.cc

@@ -971,8 +971,6 @@ Token Lexer::check_keyword(const Source& source, std::string_view str) {
     return {Token::Type::kI32, source, "i32"};
   if (str == "if")
     return {Token::Type::kIf, source, "if"};
-  if (str == "image")
-    return {Token::Type::kImage, source, "image"};
   if (str == "import")
     return {Token::Type::kImport, source, "import"};
   if (str == "let")

src/reader/wgsl/lexer_test.cc

@@ -738,7 +738,6 @@ INSTANTIATE_TEST_SUITE_P(
         TokenData{"function", Token::Type::kFunction},
         TokenData{"i32", Token::Type::kI32},
         TokenData{"if", Token::Type::kIf},
-        TokenData{"image", Token::Type::kImage},
         TokenData{"import", Token::Type::kImport},
         TokenData{"let", Token::Type::kLet},
         TokenData{"loop", Token::Type::kLoop},

src/reader/wgsl/parser_impl.cc

@@ -1156,7 +1156,6 @@ Expect<const ast::Type*> ParserImpl::expect_type_decl_matrix(Token t) {
 //  | UNIFORM
 //  | WORKGROUP
 //  | STORAGE
-//  | IMAGE
 //  | PRIVATE
 //  | FUNCTION
 Expect<ast::StorageClass> ParserImpl::expect_storage_class(
@@ -1172,9 +1171,6 @@ Expect<ast::StorageClass> ParserImpl::expect_storage_class(
   if (match(Token::Type::kStorage))
     return {ast::StorageClass::kStorage, source};
 
-  if (match(Token::Type::kImage))
-    return {ast::StorageClass::kImage, source};
-
   if (match(Token::Type::kPrivate))
     return {ast::StorageClass::kPrivate, source};
 

src/reader/wgsl/parser_impl_storage_class_test.cc

@@ -50,7 +50,6 @@ INSTANTIATE_TEST_SUITE_P(
         StorageClassData{"workgroup", ast::StorageClass::kWorkgroup},
         StorageClassData{"storage", ast::StorageClass::kStorage},
         StorageClassData{"storage_buffer", ast::StorageClass::kStorage},
-        StorageClassData{"image", ast::StorageClass::kImage},
         StorageClassData{"private", ast::StorageClass::kPrivate},
         StorageClassData{"function", ast::StorageClass::kFunction}));
 

src/reader/wgsl/parser_impl_variable_qualifier_test.cc

@@ -58,8 +58,6 @@ INSTANTIATE_TEST_SUITE_P(
                             ast::Access::kUndefined},
         VariableStorageData{"storage_buffer", ast::StorageClass::kStorage,
                             ast::Access::kUndefined},
-        VariableStorageData{"image", ast::StorageClass::kImage,
-                            ast::Access::kUndefined},
         VariableStorageData{"private", ast::StorageClass::kPrivate,
                             ast::Access::kUndefined},
         VariableStorageData{"function", ast::StorageClass::kFunction,

src/reader/wgsl/token.cc

@@ -153,8 +153,6 @@ std::string_view Token::TypeToName(Type type) {
       return "i32";
     case Token::Type::kIf:
       return "if";
-    case Token::Type::kImage:
-      return "image";
     case Token::Type::kImport:
       return "import";
     case Token::Type::kLet:

src/reader/wgsl/token.h

@@ -163,8 +163,6 @@ class Token {
     kI32,
     /// A 'if'
     kIf,
-    /// A 'image'
-    kImage,
     /// A 'import'
     kImport,
     /// A 'let'

src/resolver/function_validation_test.cc

@@ -823,7 +823,6 @@ INSTANTIATE_TEST_SUITE_P(
                     TestParams{ast::StorageClass::kWorkgroup, true},
                     TestParams{ast::StorageClass::kUniformConstant, false},
                     TestParams{ast::StorageClass::kStorage, false},
-                    TestParams{ast::StorageClass::kImage, false},
                     TestParams{ast::StorageClass::kPrivate, true},
                     TestParams{ast::StorageClass::kFunction, true}));
 

src/writer/spirv/builder.cc

@@ -4219,8 +4219,6 @@ SpvStorageClass Builder::ConvertStorageClass(ast::StorageClass klass) const {
       return SpvStorageClassUniformConstant;
     case ast::StorageClass::kStorage:
       return SpvStorageClassStorageBuffer;
-    case ast::StorageClass::kImage:
-      return SpvStorageClassImage;
     case ast::StorageClass::kPrivate:
       return SpvStorageClassPrivate;
     case ast::StorageClass::kFunction:

src/writer/spirv/builder_type_test.cc

@@ -553,7 +553,6 @@ INSTANTIATE_TEST_SUITE_P(
         PtrData{ast::StorageClass::kUniformConstant,
                 SpvStorageClassUniformConstant},
         PtrData{ast::StorageClass::kStorage, SpvStorageClassStorageBuffer},
-        PtrData{ast::StorageClass::kImage, SpvStorageClassImage},
         PtrData{ast::StorageClass::kPrivate, SpvStorageClassPrivate},
         PtrData{ast::StorageClass::kFunction, SpvStorageClassFunction}));
 

test/unittest/reader/spirv/SpvParserTest_ConvertType_PointerImage.spvasm

@@ -1,19 +0,0 @@
-; Test: SpvParserTest_ConvertType_PointerImage.spvasm
-; SPIR-V
-; Version: 1.0
-; Generator: Khronos SPIR-V Tools Assembler; 0
-; Bound: 7
-; Schema: 0
-OpCapability Shader
-OpMemoryModel Logical Simple
-OpEntryPoint Fragment %1 "x_100"
-OpExecutionMode %1 OriginUpperLeft
-%float = OpTypeFloat 32
-%_ptr_Image_float = OpTypePointer Image %float
-%void = OpTypeVoid
-%5 = OpTypeFunction %void
-%1 = OpFunction %void None %5
-%6 = OpLabel
-OpReturn
-OpFunctionEnd
-