Revert of [interpeter] Move to table based peephole optimizer.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 245c63a49dfb58779441c56284724beb8cc697e1..24f339044f155f7760e3482fa22cf13a4c889fbf 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -86,7 +86,6 @@
   }
 }
 
-v8_generated_peephole_source = "$target_gen_dir/bytecode-peephole-table.cc"
 v8_random_seed = "314159265"
 v8_toolset_for_shell = "host"
 
@@ -648,25 +647,6 @@
     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") {
@@ -1331,7 +1311,6 @@
     "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",
@@ -1930,9 +1909,6 @@
     ":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" ]
@@ -2156,31 +2132,6 @@
   }
 }
 
-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
 #