Merge branch 'trunk' into toolchain-overload-diagnostics

Author: zygoloid

toolchain/check/BUILD

@@ -24,6 +24,7 @@ cc_library(
         "cpp/custom_type_mapping.cpp",
         "cpp/import.cpp",
         "cpp/location.cpp",
+        "cpp/operators.cpp",
         "cpp/overload_resolution.cpp",
         "cpp/thunk.cpp",
         "cpp/type_mapping.cpp",
@@ -74,6 +75,7 @@ cc_library(
         "cpp/custom_type_mapping.h",
         "cpp/import.h",
         "cpp/location.h",
+        "cpp/operators.h",
         "cpp/overload_resolution.h",
         "cpp/thunk.h",
         "cpp/type_mapping.h",

toolchain/check/context.h

@@ -286,6 +286,9 @@ class Context {
   auto ast_context() -> clang::ASTContext& {
     return sem_ir().clang_ast_unit()->getASTContext();
   }
+  auto clang_decls() -> SemIR::ClangDeclStore& {
+    return sem_ir().clang_decls();
+  }
   auto names() -> SemIR::NameStoreWrapper { return sem_ir().names(); }
   auto name_scopes() -> SemIR::NameScopeStore& {
     return sem_ir().name_scopes();