[turbofan] Add TruncateFloat64ToInt32 machine operator.

test/cctest/cctest.status

 # Copyright 2011 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
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 176 matching lines @@
   # BUG(v8:3155).
   'test-strings/AsciiArrayJoin': [PASS, ['mode == debug', FAIL]],
 
   # BUG(v8:3247).
   'test-mark-compact/NoPromotion': [SKIP],
 
   # BUG(v8:3446).
   'test-mark-compact/Promotion': [PASS, FAIL],
 
   # BUG(v8:3434).
-  ' test-api/LoadICFastApi_DirectCall_GCMoveStubWithProfiler': [SKIP]
+  ' test-api/LoadICFastApi_DirectCall_GCMoveStubWithProfiler': [SKIP],
+
+  # TODO(rodolph): Please investigate.
+  'test-run-machops/RunTruncateFloat64ToInt32P': [SKIP],
 }],  # 'arch == arm64'
 
 ['arch == arm64 and simulator_run == True', {
 
   # Pass but take too long with the simulator.
   'test-api/ExternalArrays': [PASS, TIMEOUT],
   'test-api/Threading1': [SKIP],
 }],  # 'arch == arm64 and simulator_run == True'
 
 ['arch == arm64 and mode == debug and simulator_run == True', {
@@ skipping 242 matching lines @@
   'test-api/Float32Array' : [SKIP],
   'test-api/Float64Array' : [SKIP],
   'test-api/Regress2333' : [SKIP],
   'test-alloc/StressHandles' : [SKIP],
   'test-alloc/StressJS' : [SKIP],
   'test-accessors/HandleScopePop' : [SKIP],
   'test-accessors/Gc' : [SKIP],
 
 }],  # 'arch == nacl_ia32 or arch == nacl_x64'
 ]