[turbofan] Add the TruncateFloat32ToInt32 operator to turbofan.

src/compiler/instruction-selector.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/instruction-selector.h"
 
 #include <limits>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
@@ skipping 938 matching lines @@
     case IrOpcode::kChangeFloat32ToFloat64:
       return MarkAsFloat64(node), VisitChangeFloat32ToFloat64(node);
     case IrOpcode::kChangeInt32ToFloat64:
       return MarkAsFloat64(node), VisitChangeInt32ToFloat64(node);
     case IrOpcode::kChangeUint32ToFloat64:
       return MarkAsFloat64(node), VisitChangeUint32ToFloat64(node);
     case IrOpcode::kChangeFloat64ToInt32:
       return MarkAsWord32(node), VisitChangeFloat64ToInt32(node);
     case IrOpcode::kChangeFloat64ToUint32:
       return MarkAsWord32(node), VisitChangeFloat64ToUint32(node);
+    case IrOpcode::kTruncateFloat32ToInt32:
+      return MarkAsWord32(node), VisitTruncateFloat32ToInt32(node);
     case IrOpcode::kTryTruncateFloat32ToInt64:
       return MarkAsWord64(node), VisitTryTruncateFloat32ToInt64(node);
     case IrOpcode::kTryTruncateFloat64ToInt64:
       return MarkAsWord64(node), VisitTryTruncateFloat64ToInt64(node);
     case IrOpcode::kTryTruncateFloat32ToUint64:
       return MarkAsWord64(node), VisitTryTruncateFloat32ToUint64(node);
     case IrOpcode::kTryTruncateFloat64ToUint64:
       return MarkAsWord64(node), VisitTryTruncateFloat64ToUint64(node);
     case IrOpcode::kChangeInt32ToInt64:
       return MarkAsWord64(node), VisitChangeInt32ToInt64(node);
@@ skipping 645 matching lines @@
   return new (instruction_zone()) FrameStateDescriptor(
       instruction_zone(), state_info.type(), state_info.bailout_id(),
       state_info.state_combine(), parameters, locals, stack,
       state_info.shared_info(), outer_state);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8