[test] Skip test with gcc build

Also enable test runner to differentiate between clang and gcc.

Bug: v8:8919
Change-Id: Icdcae0aba3644a1b1b9ddc6c037eabde27d717f7
Reviewed-on: https://chromium-review.googlesource.com/c/1491634
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59906}

BUILD.gn

@@ -1190,6 +1190,7 @@ action("v8_dump_build_config") {
     "is_android=$is_android",
     "is_asan=$is_asan",
     "is_cfi=$is_cfi",
+    "is_clang=$is_clang",
     "is_component_build=$is_component_build",
     "is_debug=$v8_enable_debugging_features",
     "is_gcov_coverage=$is_gcov_coverage",

test/cctest/cctest.status

@@ -110,6 +110,9 @@
   # BUG(v8:8739). Wasm interpreter does not create proper stack traces.
   'test-wasm-stack/RunWasmInterpreter_CollectDetailedWasmStack_WasmError': [SKIP],
 
+  # https://crbug.com/v8/8919
+  'test-platform/StackAlignment': [PASS, ['not is_clang', SKIP]],
+
   ############################################################################
   # Slow tests.
   'test-debug/CallFunctionInDebugger': [PASS, ['mode == debug', SLOW]],

tools/testrunner/base_runner.py

@@ -183,6 +183,7 @@ class BuildConfig(object):
     self.dcheck_always_on = build_config['dcheck_always_on']
     self.gcov_coverage = build_config['is_gcov_coverage']
     self.is_android = build_config['is_android']
+    self.is_clang = build_config['is_clang']
     self.is_debug = build_config['is_debug']
     self.msan = build_config['is_msan']
     self.no_i18n = not build_config['v8_enable_i18n_support']
@@ -657,6 +658,7 @@ class BaseTestRunner(object):
       "gc_stress": False,
       "gcov_coverage": self.build_config.gcov_coverage,
       "isolates": options.isolates,
+      "is_clang": self.build_config.is_clang,
       "mips_arch_variant": mips_arch_variant,
       "mode": self.mode_options.status_mode
               if not self.build_config.dcheck_always_on

tools/unittests/testdata/testroot1/v8_build_config.json

@@ -4,6 +4,7 @@
   "is_android": false,
   "is_asan": false,
   "is_cfi": false,
+  "is_clang": true,
   "is_component_build": false,
   "is_debug": false,
   "is_gcov_coverage": false,

tools/unittests/testdata/testroot2/v8_build_config.json

@@ -4,6 +4,7 @@
   "is_android": false,
   "is_asan": false,
   "is_cfi": false,
+  "is_clang": true,
   "is_component_build": false,
   "is_debug": false,
   "is_gcov_coverage": false,