Enable /GL for all targets in Official (behind a flag)

third_party/yasm/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.
 
 # The yasm build process creates a slew of small C subprograms that
 # dynamically generate files at various point in the build process.  This makes
 # the build integration moderately complex.
 #
 # There are three classes of dynamically generated files:
 #   1) C source files that should be included in the build (eg., lc3bid.c)
 #   2) C source files that are #included by static C sources (eg., license.c)
 #   3) Intermediate files that are used as input by other subprograms to
 #      further generate files in category #1 or #2.  (eg., version.mac)
 #
 # This structure is represented with the following targets:
 #   1) yasm -- Sources, flags for the main yasm executable. Also has most of
 #              of the actions and rules that invoke the subprograms.
 #   2) yasm_config -- General build configuration including setting a
 #              inputs listing the checked in version of files
 #              generated by manually running configure. These manually
 #              generated files are used by all binaries.
 #   3) yasm_utils -- Object files with memory management and hashing utilities
 #              shared between yasm and the genperf subprogram.
 #   4) genmacro, genmodule, etc. -- One executable target for each subprogram.
 #   5) generate_license, generate_module, etc. -- Actions that invoke programs
 #              built in #4 to generate .c files.
 #   6) compile_gperf, compile_re2c, etc. -- Actions that invoke programs that
 #              turn intermediate files into .c files.
 
+import("//build/config/compiler/compiler.gni")
+
 if (current_toolchain == host_toolchain) {
   # Various files referenced by multiple targets.
   yasm_gen_include_dir = "$target_gen_dir/include"
   config_makefile = "source/config/$host_os/Makefile"
   version_file = "version.mac"
 
   import("//build/compiled_action.gni")
 
   config("yasm_config") {
     include_dirs = [
@@ skipping 250 matching lines @@
     configs += [
       ":yasm_config",
       "//build/config/compiler:no_chromium_code",
       "//build/config/compiler:no_incompatible_pointer_warnings",
 
       # Must be after no_chromium_code for warning flags to be ordered
       # correctly.
       ":yasm_warnings",
     ]
 
+    # Disable WPO for yasm: crbug.com/604808
+    if (is_official_build && full_wpo_on_official) {
+      configs -= [ "//build/config/compiler:default_optimization" ]
+      configs += [ "//build/config/compiler:optimize_no_wpo" ]
+    }
+
     # Yasm generates a bunch of .c files which its source file #include.
     # Add the |target_gen_dir| into the include path so it can find them.
     # Ideally, these generated .c files would be placed into a separate
     # directory, but the gen_x86_insn.py script does not make this easy.
     include_dirs = [ yasm_gen_include_dir ]
 
     if (!is_win) {
       cflags = [
         "-std=c89",
         "-pedantic",
@@ skipping 215 matching lines @@
 
     # Output eventually #included by source/patched-yasm/frontends/yasm/x86id.c
     outputs = [
       "$yasm_gen_include_dir/x86insns.c",
       "$yasm_gen_include_dir/x86insn_gas.gperf",
       "$yasm_gen_include_dir/x86insn_nasm.gperf",
     ]
     args = [ rebase_path(yasm_gen_include_dir, root_build_dir) ]
   }
 }