X87: enable the X87 turbofan support.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
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@@ skipping 283 matching lines @@
 
   # BUG(1075): Unresolved crashes on MIPS also.
   'test-serialize/Deserialize': [SKIP],
   'test-serialize/DeserializeFromSecondSerializationAndRunScript2': [SKIP],
   'test-serialize/DeserializeAndRunScript2': [SKIP],
   'test-serialize/DeserializeFromSecondSerialization': [SKIP],
 }],  # 'arch == mips64el'
 
 ##############################################################################
 ['arch == x87', {
-
-  # Test requires turbofan:
-  'codegen-tester/CompareWrapper': [SKIP],
-  'codegen-tester/ParametersEqual': [SKIP],
-  'test-simplified-lowering/LowerStringOps_to_call_and_compare': [SKIP],
-  'test-serialize/SerializeInternalReference': [FAIL],
+  'test-run-machops/RunFloat64InsertLowWord32': [SKIP]
 }],  # 'arch == x87'
 
 ##############################################################################
 ['arch == android_arm or arch == android_ia32', {
 
   # Tests crash as there is no /tmp directory in Android.
   'test-log/LogAccessorCallbacks': [SKIP],
   'test-log/LogCallbacks': [SKIP],
   'test-log/ProfLazyMode': [SKIP],
 }],  # 'arch == android_arm or arch == android_ia32'
@@ skipping 114 matching lines @@
 ##############################################################################
 ['arch == ppc and simulator_run == True or arch == ppc64 and simulator_run == True', {
 
   # Pass but take too long with the simulator.
   'test-api/Threading1': [PASS, SLOW],
   'test-api/Threading2': [PASS, SLOW],
   'test-api/ExternalArrays': [PASS, SLOW],
 
 }],  # 'arch == ppc64 and simulator_run == True'
 ]