Reland "[interpeter] Move to table based peephole optimizer."

BUILD.gn

 # Copyright 2014 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/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 68 matching lines @@
   }
 }
 if (v8_enable_gdbjit == "") {
   if (defined(v8_enable_gdbjit_default)) {
     v8_enable_gdbjit = v8_enable_gdbjit_default
   } else {
     v8_enable_gdbjit = false
   }
 }
 
+v8_generated_peephole_source = "$target_gen_dir/bytecode-peephole-table.cc"
 v8_random_seed = "314159265"
 v8_toolset_for_shell = "host"
 
 ###############################################################################
 # Configurations
 #
 config("internal_config") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
   include_dirs = [ "." ]
@@ skipping 543 matching lines @@
       rebase_path("$root_out_dir/snapshot_blob.bin", root_build_dir),
     ]
   }
 
   if (v8_embed_script != "") {
     sources += [ v8_embed_script ]
     args += [ rebase_path(v8_embed_script, root_build_dir) ]
   }
 }
 
+action("run_mkpeephole") {
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+
+  deps = [ ":mkpeephole($v8_snapshot_toolchain)" ]
+
+  outputs = [ v8_generated_peephole_source ]
+
+  sources = []
+
+  script = "tools/run.py"
+
+  args = [
+    "./" + rebase_path(get_label_info(":mkpeephole($v8_snapshot_toolchain)",
+                                      "root_out_dir") + "/mkpeephole",
+                       root_build_dir),
+    rebase_path(v8_generated_peephole_source, root_build_dir),
+  ]
+}
+
 action("v8_dump_build_config") {
   script = "tools/testrunner/utils/dump_build_config.py"
   outputs = [
     "$root_out_dir/v8_build_config.json",
   ]
   args = [
     rebase_path("$root_out_dir/v8_build_config.json", root_build_dir),
     "dcheck_always_on=$dcheck_always_on",
     "is_asan=$is_asan",
     "is_cfi=$is_cfi",
@@ skipping 646 matching lines @@
     "src/interpreter/bytecode-dead-code-optimizer.h",
     "src/interpreter/bytecode-decoder.cc",
     "src/interpreter/bytecode-decoder.h",
     "src/interpreter/bytecode-flags.cc",
     "src/interpreter/bytecode-flags.h",
     "src/interpreter/bytecode-generator.cc",
     "src/interpreter/bytecode-generator.h",
     "src/interpreter/bytecode-label.h",
     "src/interpreter/bytecode-peephole-optimizer.cc",
     "src/interpreter/bytecode-peephole-optimizer.h",
+    "src/interpreter/bytecode-peephole-table.h",
     "src/interpreter/bytecode-pipeline.cc",
     "src/interpreter/bytecode-pipeline.h",
     "src/interpreter/bytecode-register-allocator.cc",
     "src/interpreter/bytecode-register-allocator.h",
     "src/interpreter/bytecode-register-optimizer.cc",
     "src/interpreter/bytecode-register-optimizer.h",
     "src/interpreter/bytecode-register.cc",
     "src/interpreter/bytecode-register.h",
     "src/interpreter/bytecode-traits.h",
     "src/interpreter/bytecodes.cc",
@@ skipping 578 matching lines @@
   }
 
   configs = [ ":internal_config" ]
 
   defines = []
   deps = [
     ":v8_libbase",
     ":v8_libsampler",
   ]
 
+  sources += [ v8_generated_peephole_source ]
+  deps += [ ":run_mkpeephole" ]
+
   if (is_win) {
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     cflags = [ "/wd4267" ]
   }
 
   if (v8_enable_i18n_support) {
     deps += [ "//third_party/icu" ]
     if (is_win) {
       deps += [ "//third_party/icu:icudata" ]
     }
@@ skipping 203 matching lines @@
     deps = [
       ":v8_base",
       ":v8_libplatform",
       ":v8_nosnapshot",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
 }
 
+v8_executable("mkpeephole") {
+  # mkpeephole needs to be built for the build host so the peephole lookup
+  # table can built during build. The table depends on the properties of
+  # bytecodes that are described in bytecodes.{cc,h}.
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+
+  sources = [
+    "src/interpreter/bytecode-peephole-optimizer.h",
+    "src/interpreter/bytecodes.cc",
+    "src/interpreter/bytecodes.h",
+    "src/interpreter/mkpeephole.cc",
+  ]
+
+  configs = [
+    ":external_config",
+    ":internal_config",
+  ]
+
+  deps = [
+    ":v8_libbase",
+    "//build/config/sanitizers:deps",
+    "//build/win:default_exe_manifest",
+  ]
+}
+
 ###############################################################################
 # Public targets
 #
 
 want_v8_shell =
     (current_toolchain == host_toolchain && v8_toolset_for_shell == "host") ||
     (current_toolchain == v8_snapshot_toolchain &&
      v8_toolset_for_shell == "host") ||
     (current_toolchain != host_toolchain && v8_toolset_for_shell == "target")
 
@@ skipping 286 matching lines @@
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_asmjs_fuzzer") {
 }