[turbofan] Add support for reinterpreting integers as floating point and vice versa.

src/compiler/verifier.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/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 852 matching lines @@
     case IrOpcode::kFloat64Sqrt:
     case IrOpcode::kFloat64RoundDown:
     case IrOpcode::kFloat64RoundTruncate:
     case IrOpcode::kFloat64RoundTiesAway:
     case IrOpcode::kFloat64Equal:
     case IrOpcode::kFloat64LessThan:
     case IrOpcode::kFloat64LessThanOrEqual:
     case IrOpcode::kTruncateInt64ToInt32:
     case IrOpcode::kTruncateFloat64ToFloat32:
     case IrOpcode::kTruncateFloat64ToInt32:
+    case IrOpcode::kBitcastFloat32ToInt32:
+    case IrOpcode::kBitcastFloat64ToInt64:
+    case IrOpcode::kBitcastInt32ToFloat32:
+    case IrOpcode::kBitcastInt64ToFloat64:
     case IrOpcode::kChangeInt32ToInt64:
     case IrOpcode::kChangeUint32ToUint64:
     case IrOpcode::kChangeInt32ToFloat64:
     case IrOpcode::kChangeUint32ToFloat64:
     case IrOpcode::kChangeFloat32ToFloat64:
     case IrOpcode::kChangeFloat64ToInt32:
     case IrOpcode::kChangeFloat64ToUint32:
     case IrOpcode::kFloat64ExtractLowWord32:
     case IrOpcode::kFloat64ExtractHighWord32:
     case IrOpcode::kFloat64InsertLowWord32:
@@ skipping 263 matching lines @@
     // Check inputs for all nodes in the block.
     for (size_t i = 0; i < block->NodeCount(); i++) {
       Node* node = block->NodeAt(i);
       CheckInputsDominate(schedule, block, node, static_cast<int>(i) - 1);
     }
   }
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8