Revert "Reland Clang 11, Roll buildroot to...

Revert "Reland Clang 11, Roll buildroot to 1bc40a5f916adb93d87e2a2230a0ec43db876c1c (#17457)" (#17464)

This reverts commit a4026cc9.

DEPS

@@ -136,7 +136,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + '1bc40a5f916adb93d87e2a2230a0ec43db876c1c',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + 'a0fb98af7b6f50f17b47ab7968f3f5664d0d6316',
 
    # Fuchsia compatibility
    #
@@ -517,8 +517,8 @@ deps = {
   'src/buildtools/{host_os}-x64/clang': {
     'packages': [
       {
-        'package': 'fuchsia/third_party/clang/${{platform}}',
-        'version': 'git_revision:7e9747b50bcb1be28d4a3236571e8050835497a6'
+        'package': 'fuchsia/clang/${{platform}}',
+        'version': 'git_revision:de39621f0f03f20633bdfa50bde97a3908bf6e98'
       }
     ],
     'condition': 'host_os == "mac" or host_os == "linux"',

flow/layers/performance_overlay_layer_unittests.cc

@@ -88,8 +88,6 @@ static void TestPerformanceOverlayLayerGold(int refresh_rate) {
       << "Please either set --golden-dir, or make sure that the unit test is "
       << "run from the right directory (e.g., flutter/engine/src).";
 
-  // TODO(https://github.com/flutter/flutter/issues/53784): enable this on all
-  // platforms.
 #if !defined(OS_LINUX)
   GTEST_SKIP() << "Skipping golden tests on non-Linux OSes";
 #endif  // OS_LINUX

shell/platform/embedder/tests/embedder_unittests.cc

@@ -1430,7 +1430,7 @@ TEST_F(EmbedderTest,
       });
 
   context.GetCompositor().SetPlatformViewRendererCallback(
-      [&](const FlutterLayer& layer, GrContext*
+      [&](const FlutterLayer& layer, GrContext *
           /* don't use because software compositor */) -> sk_sp<SkImage> {
         auto surface = CreateRenderSurface(
             layer, nullptr /* null because software compositor */);
@@ -3001,12 +3001,6 @@ TEST_F(EmbedderTest, VerifyB143464703WithSoftwareBackend) {
   auto renderered_scene = context.GetNextSceneImage();
 
   latch.Wait();
-
-  // TODO(https://github.com/flutter/flutter/issues/53784): enable this on all
-  // platforms.
-#if !defined(OS_LINUX)
-  GTEST_SKIP() << "Skipping golden tests on non-Linux OSes";
-#endif  // OS_LINUX
   ASSERT_TRUE(ImageMatchesFixture("verifyb143464703_soft_noxform.png",
                                   renderered_scene));
 }

testing/symbols/verify_exported.dart

@@ -110,90 +110,8 @@ int _checkAndroid(String outPath, String nmPath, Iterable<String> builds) {
       'JNI_OnLoad': 'T',
       '_binary_icudtl_dat_size': 'A',
       '_binary_icudtl_dat_start': 'D',
-      // TODO(fxb/47943): Remove these once Clang lld does not expose them.
-      // arm
-      '__adddf3': 'T',
-      '__addsf3': 'T',
-      '__aeabi_cdcmpeq': 'T',
-      '__aeabi_cdcmple': 'T',
-      '__aeabi_cdrcmple': 'T',
-      '__aeabi_d2lz': 'T',
-      '__aeabi_d2uiz': 'T',
-      '__aeabi_d2ulz': 'T',
-      '__aeabi_dadd': 'T',
-      '__aeabi_dcmpeq': 'T',
-      '__aeabi_dcmpge': 'T',
-      '__aeabi_dcmpgt': 'T',
-      '__aeabi_dcmple': 'T',
-      '__aeabi_dcmplt': 'T',
-      '__aeabi_ddiv': 'T',
-      '__aeabi_dmul': 'T',
-      '__aeabi_drsub': 'T',
-      '__aeabi_dsub': 'T',
-      '__aeabi_f2d': 'T',
-      '__aeabi_fadd': 'T',
-      '__aeabi_frsub': 'T',
-      '__aeabi_fsub': 'T',
-      '__aeabi_i2d': 'T',
-      '__aeabi_i2f': 'T',
-      '__aeabi_l2d': 'T',
-      '__aeabi_l2f': 'T',
-      '__aeabi_lasr': 'T',
-      '__aeabi_ldivmod': 'T',
-      '__aeabi_llsl': 'T',
-      '__aeabi_llsr': 'T',
-      '__aeabi_ui2d': 'T',
-      '__aeabi_ui2f': 'T',
-      '__aeabi_uidiv': 'T',
-      '__aeabi_uidivmod': 'T',
-      '__aeabi_ul2d': 'T',
-      '__aeabi_ul2f': 'T',
-      '__aeabi_uldivmod': 'T',
-      '__ashldi3': 'T',
-      '__ashrdi3': 'T',
-      '__cmpdf2': 'T',
-      '__divdf3': 'T',
-      '__divdi3': 'T',
-      '__eqdf2': 'T',
-      '__extendsfdf2': 'T',
-      '__fixdfdi': 'T',
-      '__fixunsdfdi': 'T',
-      '__fixunsdfsi': 'T',
-      '__floatdidf': 'T',
-      '__floatdisf': 'T',
-      '__floatsidf': 'T',
-      '__floatsisf': 'T',
-      '__floatundidf': 'T',
-      '__floatundisf': 'T',
-      '__floatunsidf': 'T',
-      '__floatunsisf': 'T',
-      '__gedf2': 'T',
-      '__gnu_ldivmod_helper': 'T',
-      '__gnu_uldivmod_helper': 'T',
-      '__gtdf2': 'T',
-      '__ledf2': 'T',
-      '__lshrdi3': 'T',
-      '__ltdf2': 'T',
-      '__muldf3': 'T',
-      '__nedf2': 'T',
-      '__subdf3': 'T',
-      '__subsf3': 'T',
-      '__udivdi3': 'T',
-      '__udivsi3': 'T',
-      // arm64
-      '__clz_tab': 'R',
-      '__udivti3': 'T',
-      // arm64 && x64
-      '__emutls_get_address': 'T',
-      '__emutls_register_common': 'T',
     };
-    final Map<String, String> badSymbols = <String, String>{};
-    for (final String key in entryMap.keys) {
-      if (entryMap[key] != expectedSymbols[key]) {
-        badSymbols[key] = entryMap[key];
-      }
-    }
-    if (badSymbols.isNotEmpty) {
+    if (!const MapEquality<String, String>().equals(entryMap, expectedSymbols)) {
       print('ERROR: $libFlutter exports the wrong symbols');
       print(' Expected $expectedSymbols');
       print(' Library has $entryMap.');