GN: Disable clang for simulators hosted on ia32

third_party/tcmalloc/BUILD.gn

 # Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 config("internal_config") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   cflags = [
     "-Wall",
     "-Wextra",
     "-Wno-missing-field-initializers",
@@ skipping 87 matching lines @@
     ]
   }
 
   cflags = [
     "-Wnon-virtual-dtor",
     "-Woverloaded-virtual",
     "-fno-rtti",
     "-fpermissive",
   ]
 
+  if (!is_clang && current_cpu == "x86") {
+    cflags += [
+      "-Wno-format"
+    ]
+  }
+
   set_sources_assignment_filter([
     # No debug allocator.
     "gperftools/src/debugallocation.cc",
     # Not needed when using emergency malloc.
     "gperftools/src/fake_stacktrace_scope.cc",
     # Not using the cpuprofiler
     "gperftools/src/base/thread_lister.c",
     "gperftools/src/base/thread_lister.h",
     "gperftools/src/profile-handler.cc",
     "gperftools/src/profile-handler.h",
     "gperftools/src/profiledata.cc",
     "gperftools/src/profiledata.h",
     "gperftools/src/profiler.cc",
   ])
 
   sources = tcmalloc_sources_list.sources
 }