[turbofan] Introduce integer multiplication with overflow.

src/compiler/code-assembler.h

 // Copyright 2015 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.
 
 #ifndef V8_COMPILER_CODE_ASSEMBLER_H_
 #define V8_COMPILER_CODE_ASSEMBLER_H_
 
 #include <map>
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
@@ skipping 67 matching lines @@
   V(Float64InsertHighWord32)               \
   V(IntPtrAdd)                             \
   V(IntPtrAddWithOverflow)                 \
   V(IntPtrSub)                             \
   V(IntPtrSubWithOverflow)                 \
   V(IntPtrMul)                             \
   V(Int32Add)                              \
   V(Int32AddWithOverflow)                  \
   V(Int32Sub)                              \
   V(Int32Mul)                              \
+  V(Int32MulWithOverflow)                  \
   V(Int32Div)                              \
   V(Int32Mod)                              \
   V(WordOr)                                \
   V(WordAnd)                               \
   V(WordXor)                               \
   V(WordShl)                               \
   V(WordShr)                               \
   V(WordSar)                               \
   V(WordRor)                               \
   V(Word32Or)                              \
@@ skipping 349 matching lines @@
   // Map of variables to the list of value nodes that have been added from each
   // merge path in their order of merging.
   std::map<Variable::Impl*, std::vector<Node*>> variable_merges_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_ASSEMBLER_H_