[build] Clean up Bazel tags, fix excessive Windows warnings

- Disable Dawn diagnostic leading to excessive warning volume on Windows
- Drop check for libc++ >= 15, we have required LLVM 15 for a while.
- Don't mark workerd binary as no-arm64, which caused problems for downstream
  where it still needs to be built.
- Drop superfluous CI filter overrides – we already set the filters to
  off-by-default in the global config.
- Drop "slow" bazel tag – this has been superseded by the "enormous" size filter.

.bazelrc

@@ -59,8 +59,8 @@ build --per_file_copt='external@-Wno-error'
 build --per_file_copt='external/v8@-Wno-deprecated-declarations'
 build --per_file_copt='external/com_googlesource_chromium_icu@-Wno-ambiguous-reversed-operator,-Wno-deprecated-declarations'
 build --host_per_file_copt='external/com_googlesource_chromium_icu@-Wno-ambiguous-reversed-operator,-Wno-deprecated-declarations'
-build --per_file_copt='external/dawn@-Wno-shorten-64-to-32,-Wno-unneeded-internal-declaration'
-build --host_per_file_copt='external/dawn@-Wno-shorten-64-to-32,-Wno-unneeded-internal-declaration'
+build --per_file_copt='external/dawn@-Wno-shorten-64-to-32,-Wno-unneeded-internal-declaration,-Wno-deprecated-this-capture'
+build --host_per_file_copt='external/dawn@-Wno-shorten-64-to-32,-Wno-unneeded-internal-declaration,-Wno-deprecated-this-capture'
 build --per_file_copt='external/zlib@-Wno-unknown-warning-option,-Wno-deprecated-non-prototype'
 build --host_per_file_copt='external/zlib@-Wno-unknown-warning-option,-Wnodeprecated-non-prototype'
 # for some reason tcmalloc uses internal msan-enabled annotation in the code, rather than public one

build/ci.bazelrc

@@ -37,7 +37,7 @@ build:ci-test --remote_download_outputs=minimal
 # LLVM produces a bit more debug info on macOS by default to facilitate debugging with
 # LLDB. This is not needed for this use case, so disable it using -fno-standalone-debug –
 # this is already the default for Linux/Windows.
-build:ci-limit-storage --build_tag_filters=-off-by-default,-slow,-benchmark
+build:ci-limit-storage --build_tag_filters=-off-by-default,-benchmark
 build:ci-limit-storage --copt="-g1"
 build:ci-limit-storage --copt="-fno-standalone-debug"
 
@@ -55,8 +55,7 @@ build:ci-linux --config=ci-linux-common
 # Some tests (like Python import tests) take a long time to run and don't benefit much
 # from multi-platform testing. For that reason, we only run them in a single configuration
 # to minimize effect on CI pipeline runtime.
-build:ci-linux --build_tag_filters=-off-by-default
-test:ci-linux --test_tag_filters=-off-by-default --test_size_filters=small,medium,large,enormous
+test:ci-linux --test_size_filters=small,medium,large,enormous
 
 build:ci-linux-debug --config=ci-linux-common --config=ci-limit-storage
 build:ci-linux-debug --config=debug --config=rust-debug

src/workerd/jsg/iterator.h

@@ -160,23 +160,13 @@ class GeneratorImpl {
   friend Generator;
 };
 
-#if _LIBCPP_VERSION >= 15000
 template <class Func, class T>
 concept GeneratorCallback = std::invocable<Func, Lock&, T, GeneratorContext<T>&> &&
     std::same_as<void, std::invoke_result_t<Func, Lock&, T, GeneratorContext<T>&>>;
 
 template <class Func, class T>
 concept AsyncGeneratorCallback = std::invocable<Func, Lock&, T, GeneratorContext<T>&> &&
     std::same_as<Promise<void>, std::invoke_result_t<Func, Lock&, T, GeneratorContext<T>&>>;
-#else
-// These don't work in libc++ 11. I haven't tried 12-14, but they do work in 15. So we'll just
-// skip the extra type checking if we don't have libc++ 15 or newer.
-template <class Func, class T>
-concept GeneratorCallback = true;
-
-template <class Func, class T>
-concept AsyncGeneratorCallback = true;
-#endif
 
 template <typename T>
 class Generator final {

src/workerd/server/BUILD.bazel

@@ -45,7 +45,6 @@ wd_cc_binary(
     name = "workerd",
     srcs = ["workerd.c++"],
     malloc = ":malloc",
-    tags = ["no-arm64"],
     visibility = ["//visibility:public"],
     deps = [
         ":server",

src/workerd/server/tests/python/import_tests.bzl

@@ -51,6 +51,5 @@ def gen_import_tests(to_test):
             src = wd_test_fname,
             args = ["--experimental", "--pyodide-package-disk-cache-dir", "../all_pyodide_wheels"],
             data = [worker_py_fname, "@all_pyodide_wheels//:whls"],
-            tags = ["slow"],
             size = "enormous",
         )