Access struct member name through sem.

This CL changes the uses of Declaration()->symbol for struct members in
the sem to access the `Name` directly.

Bug: tint:1718
Change-Id: I3050147b97bea66d6c283e176a7152f36eb2b25f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112444
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

src/tint/inspector/inspector.cc

@@ -648,9 +648,9 @@ void Inspector::AddEntryPointInOutVariables(std::string name,
     if (auto* struct_ty = unwrapped_type->As<sem::Struct>()) {
         // Recurse into members.
         for (auto* member : struct_ty->Members()) {
-            AddEntryPointInOutVariables(
-                name + "." + program_->Symbols().NameFor(member->Declaration()->symbol),
-                member->Type(), member->Declaration()->attributes, member->Location(), variables);
+            AddEntryPointInOutVariables(name + "." + program_->Symbols().NameFor(member->Name()),
+                                        member->Type(), member->Declaration()->attributes,
+                                        member->Location(), variables);
         }
         return;
     }

src/tint/resolver/resolver.cc

@@ -3620,7 +3620,7 @@ bool Resolver::ApplyAddressSpaceUsageToType(ast::AddressSpace address_space,
                                               decl->type->source)) {
                 std::stringstream err;
                 err << "while analyzing structure member " << sem_.TypeNameOf(str) << "."
-                    << builder_->Symbols().NameFor(decl->symbol);
+                    << builder_->Symbols().NameFor(member->Name());
                 AddNote(err.str(), decl->source);
                 return false;
             }

src/tint/resolver/validator.cc

@@ -413,7 +413,7 @@ bool Validator::AddressSpaceLayout(const sem::Type* store_ty,
     };
 
     auto member_name_of = [this](const sem::StructMember* sm) {
-        return symbols_.NameFor(sm->Declaration()->symbol);
+        return symbols_.NameFor(sm->Name());
     };
 
     // Only validate the [type + address space] once

src/tint/sem/struct.cc

@@ -80,7 +80,7 @@ bool Struct::Equals(const sem::Type& other) const {
 
 const StructMember* Struct::FindMember(Symbol name) const {
     for (auto* member : members_) {
-        if (member->Declaration()->symbol == name) {
+        if (member->Name() == name) {
             return member;
         }
     }
@@ -102,9 +102,7 @@ std::string Struct::FriendlyName(const SymbolTable& symbols) const {
 std::string Struct::Layout(const tint::SymbolTable& symbols) const {
     std::stringstream ss;
 
-    auto member_name_of = [&](const sem::StructMember* sm) {
-        return symbols.NameFor(sm->Declaration()->symbol);
-    };
+    auto member_name_of = [&](const sem::StructMember* sm) { return symbols.NameFor(sm->Name()); };
 
     if (Members().empty()) {
         return {};

src/tint/transform/canonicalize_entry_point_io.cc

@@ -359,10 +359,10 @@ struct CanonicalizeEntryPointIO::State {
                 continue;
             }
 
-            auto* member_ast = member->Declaration();
-            auto name = ctx.src->Symbols().NameFor(member_ast->symbol);
+            auto name = ctx.src->Symbols().NameFor(member->Name());
 
-            auto attributes = CloneShaderIOAttributes(member_ast->attributes, do_interpolate);
+            auto attributes =
+                CloneShaderIOAttributes(member->Declaration()->attributes, do_interpolate);
             auto* input_expr =
                 AddInput(name, member->Type(), member->Location(), std::move(attributes));
             inner_struct_values.Push(input_expr);
@@ -388,9 +388,9 @@ struct CanonicalizeEntryPointIO::State {
                     continue;
                 }
 
-                auto* member_ast = member->Declaration();
-                auto name = ctx.src->Symbols().NameFor(member_ast->symbol);
-                auto attributes = CloneShaderIOAttributes(member_ast->attributes, do_interpolate);
+                auto name = ctx.src->Symbols().NameFor(member->Name());
+                auto attributes =
+                    CloneShaderIOAttributes(member->Declaration()->attributes, do_interpolate);
 
                 // Extract the original structure member.
                 AddOutput(name, member->Type(), member->Location(), std::move(attributes),

src/tint/transform/decompose_memory_access.cc

@@ -645,8 +645,8 @@ struct DecomposeMemoryAccess::State {
                             utils::Vector<const ast::Statement*, 8> stmts;
                             for (auto* member : str->Members()) {
                                 auto* offset = b.Add("offset", u32(member->Offset()));
-                                auto* element = b.MemberAccessor(
-                                    "value", ctx.Clone(member->Declaration()->symbol));
+                                auto* element =
+                                    b.MemberAccessor("value", ctx.Clone(member->Name()));
                                 Symbol store =
                                     StoreFunc(buf_ty, member->Type()->UnwrapRef(), var_user);
                                 auto* call = b.Call(store, "buffer", offset, element);

src/tint/transform/num_workgroups_from_uniform.cc

@@ -107,7 +107,7 @@ Transform::ApplyResult NumWorkgroupsFromUniform::Apply(const Program* src,
                 // Capture the symbols that would be used to access this member, which
                 // we will replace later. We currently have no way to get from the
                 // parameter directly to the member accessor expressions that use it.
-                to_replace.insert({param->Declaration()->symbol, member->Declaration()->symbol});
+                to_replace.insert({param->Declaration()->symbol, member->Name()});
 
                 // Remove the struct member.
                 // The CanonicalizeEntryPointIO transform will have generated this

src/tint/transform/packed_vec3.cc

@@ -57,7 +57,7 @@ struct PackedVec3::State {
 
                                 // Apply the PackedVec3::Attribute to the member
                                 auto* member_decl = member->Declaration();
-                                auto name = ctx.Clone(member_decl->symbol);
+                                auto name = ctx.Clone(member->Name());
                                 auto* type = ctx.Clone(member_decl->type);
                                 utils::Vector<const ast::Attribute*, 4> attrs{
                                     b.ASTNodes().Create<Attribute>(b.ID(), b.AllocateNodeID()),

src/tint/transform/truncate_interstage_variables.cc

@@ -131,8 +131,7 @@ Transform::ApplyResult TruncateInterstageVariables::Apply(const Program* src,
                     }
 
                     truncated_members.Push(ctx.Clone(member->Declaration()));
-                    initializer_exprs.Push(
-                        b.MemberAccessor("io", ctx.Clone(member->Declaration()->symbol)));
+                    initializer_exprs.Push(b.MemberAccessor("io", ctx.Clone(member->Name())));
                 }
 
                 // Create the new shader io struct.