Fix performance regressions due to lazy initialization.

tools/check-static-initializers.sh

 #!/bin/bash
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 13 matching lines @@
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Checks that the number of compilation units having at least one static
 # initializer in d8 matches the one defined below.
 # Note that the project must be built with SCons before running this script.
 
 # Allow:
+#  - _GLOBAL__I__ZN2v810LineEditor6first_E
 #  - _GLOBAL__I__ZN2v88internal32AtomicOps_Internalx86CPUFeaturesE
-#  - _GLOBAL__I__ZN2v810LineEditor6first_E
-expected_static_init_count=2
+#  - _GLOBAL__I__ZN2v88internal8ThreadId18highest_thread_id_E
+expected_static_init_count=3
 
 v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)
 d8="${v8_root}/d8"
 
 if [ ! -f "$d8" ]; then
   echo "Please build the project with SCons."
   exit 1
 fi
 
 static_inits=$(nm "$d8" | grep _GLOBAL__I | awk '{ print $NF; }')
 
 static_init_count=$(echo "$static_inits" | wc -l)
 
 if [ $static_init_count -gt $expected_static_init_count ]; then
   echo "Too many static initializers."
   echo "$static_inits"
   exit 1
 fi