Merge V8 5.3.332.45.  DO NOT MERGE

Test: Manual

FPIIM-449

Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/src/compiler/ia32/instruction-scheduler-ia32.cc b/src/compiler/ia32/instruction-scheduler-ia32.cc
index f341db4..f19c328 100644
--- a/src/compiler/ia32/instruction-scheduler-ia32.cc
+++ b/src/compiler/ia32/instruction-scheduler-ia32.cc
@@ -84,6 +84,7 @@
     case kSSEFloat64InsertLowWord32:
     case kSSEFloat64InsertHighWord32:
     case kSSEFloat64LoadLowWord32:
+    case kSSEFloat64SilenceNaN:
     case kAVXFloat32Add:
     case kAVXFloat32Sub:
     case kAVXFloat32Mul: