Add floor, ceil, round (truncate) instructions for ia32, x64 (if SSE4.1) and

src/compiler/raw-machine-assembler.cc

Index: src/compiler/raw-machine-assembler.cc
diff --git a/src/compiler/raw-machine-assembler.cc b/src/compiler/raw-machine-assembler.cc
index 39d44f3c6304f1113adc7662199b256550575e22..464827cb1d8a01ad46a19a6b2fb6067877061ee9 100644
--- a/src/compiler/raw-machine-assembler.cc
+++ b/src/compiler/raw-machine-assembler.cc
@@ -13,10 +13,11 @@ namespace compiler {
 
 RawMachineAssembler::RawMachineAssembler(Graph* graph,
                                          MachineSignature* machine_sig,
-                                         MachineType word)
+                                         MachineType word,
+                                         MachineOperatorBuilder::Flags flags)
     : GraphBuilder(graph),
       schedule_(new (zone()) Schedule(zone())),
-      machine_(word),
+      machine_(word, flags),
       common_(zone()),
       machine_sig_(machine_sig),
       call_descriptor_(