[wasm] Int64Lowering of Int64Mul on ia32 and arm.

src/compiler/machine-operator.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/machine-operator.h"
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 
@@ skipping 180 matching lines @@
   V(Float64LessThanOrEqual, Operator::kNoProperties, 2, 0, 1)                 \
   V(Float64ExtractLowWord32, Operator::kNoProperties, 1, 0, 1)                \
   V(Float64ExtractHighWord32, Operator::kNoProperties, 1, 0, 1)               \
   V(Float64InsertLowWord32, Operator::kNoProperties, 2, 0, 1)                 \
   V(Float64InsertHighWord32, Operator::kNoProperties, 2, 0, 1)                \
   V(LoadStackPointer, Operator::kNoProperties, 0, 0, 1)                       \
   V(LoadFramePointer, Operator::kNoProperties, 0, 0, 1)                       \
   V(LoadParentFramePointer, Operator::kNoProperties, 0, 0, 1)                 \
   V(Int32PairAdd, Operator::kNoProperties, 4, 0, 2)                           \
   V(Int32PairSub, Operator::kNoProperties, 4, 0, 2)                           \
+  V(Int32PairMul, Operator::kNoProperties, 4, 0, 2)                           \
   V(Word32PairShl, Operator::kNoProperties, 3, 0, 2)                          \
   V(Word32PairShr, Operator::kNoProperties, 3, 0, 2)                          \
   V(Word32PairSar, Operator::kNoProperties, 3, 0, 2)
 
 #define PURE_OPTIONAL_OP_LIST(V)                            \
   V(Word32Ctz, Operator::kNoProperties, 1, 0, 1)            \
   V(Word64Ctz, Operator::kNoProperties, 1, 0, 1)            \
   V(Word32ReverseBits, Operator::kNoProperties, 1, 0, 1)    \
   V(Word64ReverseBits, Operator::kNoProperties, 1, 0, 1)    \
   V(Word32Popcnt, Operator::kNoProperties, 1, 0, 1)         \
@@ skipping 270 matching lines @@
 
 // On 32 bit platforms we need to get a reference to optional operators of
 // 64-bit instructions for later Int64Lowering, even though 32 bit platforms
 // don't support the original 64-bit instruction.
 const Operator* MachineOperatorBuilder::Word64CtzPlaceholder() {
   return &cache_.kWord64Ctz;
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8