4 files changed, 36 insertions, 12 deletions
diff --git a/deps/v8/tools/clusterfuzz/toolchain/BUILD.gn b/deps/v8/tools/clusterfuzz/toolchain/BUILD.gn
new file mode 100644
index 0000000000..ddcb4e1ad2
--- /dev/null
+++ b/deps/v8/tools/clusterfuzz/toolchain/BUILD.gn
@@ -0,0 +1,15 @@
+# Copyright 2019 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//build/toolchain/gcc_toolchain.gni")
+
+# Fake toolchain to enable build output for a pointer-compression-comparison
+# build in a nested build sub-directory. We toggle pointer compression when
+# this toolchain is used in v8/BUILD.gn.
+clang_toolchain("clang_x64_pointer_compression") {
+  toolchain_args = {
+    current_cpu = "x64"
+    current_os = "linux"
+  }
+}
diff --git a/deps/v8/tools/clusterfuzz/v8_foozzie.py b/deps/v8/tools/clusterfuzz/v8_foozzie.py
index ff481e9370..3b05d3829c 100755
--- a/deps/v8/tools/clusterfuzz/v8_foozzie.py
+++ b/deps/v8/tools/clusterfuzz/v8_foozzie.py
@@ -213,14 +213,15 @@ def parse_args():
   assert os.path.exists(options.first_d8)
   assert os.path.exists(options.second_d8)
 
+  # Ensure we make a sane comparison.
+  if (options.first_d8 == options.second_d8 and
+      options.first_config == options.second_config):
+    parser.error('Need either executable or config difference.')
+
   # Infer architecture from build artifacts.
   options.first_arch = infer_arch(options.first_d8)
   options.second_arch = infer_arch(options.second_d8)
 
-  # Ensure we make a sane comparison.
-  if (options.first_arch == options.second_arch and
-      options.first_config == options.second_config):
-    parser.error('Need either arch or config difference.')
   assert options.first_arch in SUPPORTED_ARCHS
   assert options.second_arch in SUPPORTED_ARCHS
   assert options.first_config in CONFIGS
diff --git a/deps/v8/tools/clusterfuzz/v8_foozzie_test.py b/deps/v8/tools/clusterfuzz/v8_foozzie_test.py
index 43b65e850b..356f79a1c3 100755
--- a/deps/v8/tools/clusterfuzz/v8_foozzie_test.py
+++ b/deps/v8/tools/clusterfuzz/v8_foozzie_test.py
@@ -38,10 +38,11 @@ class ConfigTest(unittest.TestCase):
         return 0.5
     self.assertEqual(
         [
-          '--first-config=ignition',
+          '--first-config=ignition_no_ic',
           '--second-config=ignition_turbo',
           '--second-d8=d8',
           '--second-config-extra-flags=--stress-scavenge=100',
+          '--second-config-extra-flags=--no-regexp-tier-up',
         ],
         v8_fuzz_config.Config('foo', Rng(), 42).choose_foozzie_flags(),
     )
diff --git a/deps/v8/tools/clusterfuzz/v8_fuzz_config.py b/deps/v8/tools/clusterfuzz/v8_fuzz_config.py
index 0dcacf216b..92bf0dd3aa 100644
--- a/deps/v8/tools/clusterfuzz/v8_fuzz_config.py
+++ b/deps/v8/tools/clusterfuzz/v8_fuzz_config.py
@@ -11,16 +11,18 @@ FOOZZIE_EXPERIMENTS = [
   [10, 'ignition', 'jitless', 'd8'],
   [10, 'ignition', 'slow_path', 'd8'],
   [5, 'ignition', 'slow_path_opt', 'd8'],
-  [26, 'ignition', 'ignition_turbo', 'd8'],
+  [25, 'ignition', 'ignition_turbo', 'd8'],
   [2, 'ignition_no_ic', 'ignition_turbo', 'd8'],
   [2, 'ignition', 'ignition_turbo_no_ic', 'd8'],
-  [18, 'ignition', 'ignition_turbo_opt', 'd8'],
+  [15, 'ignition', 'ignition_turbo_opt', 'd8'],
   [2, 'ignition_no_ic', 'ignition_turbo_opt', 'd8'],
-  [5, 'ignition_turbo_opt', 'ignition_turbo_opt', 'clang_x86/d8'],
-  [5, 'ignition_turbo', 'ignition_turbo', 'clang_x86/d8'],
-  [5, 'ignition', 'ignition', 'clang_x86/d8'],
-  [5, 'ignition', 'ignition', 'clang_x64_v8_arm64/d8'],
-  [5, 'ignition', 'ignition', 'clang_x86_v8_arm/d8'],
+  [4, 'ignition_turbo_opt', 'ignition_turbo_opt', 'clang_x64_pointer_compression/d8'],
+  [5, 'ignition_turbo', 'ignition_turbo', 'clang_x64_pointer_compression/d8'],
+  [4, 'ignition_turbo_opt', 'ignition_turbo_opt', 'clang_x86/d8'],
+  [4, 'ignition_turbo', 'ignition_turbo', 'clang_x86/d8'],
+  [4, 'ignition', 'ignition', 'clang_x86/d8'],
+  [4, 'ignition', 'ignition', 'clang_x64_v8_arm64/d8'],
+  [4, 'ignition', 'ignition', 'clang_x86_v8_arm/d8'],
 ]
 
 # Additional flag experiments. List of tuples like
@@ -37,6 +39,11 @@ ADDITIONAL_FLAGS = [
   (0.01, '--thread-pool-size=4'),
   (0.01, '--thread-pool-size=8'),
   (0.1, '--interrupt-budget=1000'),
+  (0.25, '--future'),
+  (0.2, '--no-regexp-tier-up'),
+  (0.1, '--regexp-interpret-all'),
+  (0.1, '--regexp-tier-up-ticks=10'),
+  (0.1, '--regexp-tier-up-ticks=100'),
 ]
 
 class Config(object):