S390: [wasm] Int64Lowering of Int64Mul on ia32 and arm.

src/compiler/s390/instruction-selector-s390.cc

 // 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.
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/s390/frames-s390.h"
 
@@ skipping 761 matching lines @@
 }
 
 void InstructionSelector::VisitInt32PairAdd(Node* node) {
   VisitPairBinop(this, kS390_AddPair, node);
 }
 
 void InstructionSelector::VisitInt32PairSub(Node* node) {
   VisitPairBinop(this, kS390_SubPair, node);
 }
 
+void InstructionSelector::VisitInt32PairMul(Node* node) {
+  S390OperandGenerator g(this);
+  InstructionOperand inputs[] = {g.UseUniqueRegister(node->InputAt(0)),
+                                 g.UseUniqueRegister(node->InputAt(1)),
+                                 g.UseUniqueRegister(node->InputAt(2)),
+                                 g.UseUniqueRegister(node->InputAt(3))};
+
+  InstructionOperand outputs[] = {
+      g.DefineAsRegister(node),
+      g.DefineAsRegister(NodeProperties::FindProjection(node, 1))};
+
+  Emit(kS390_MulPair, 2, outputs, 4, inputs);
+}
+
 void VisitPairShift(InstructionSelector* selector, ArchOpcode opcode,
                     Node* node) {
   S390OperandGenerator g(selector);
   Int32Matcher m(node->InputAt(2));
   InstructionOperand shift_operand;
   if (m.HasValue()) {
     shift_operand = g.UseImmediate(m.node());
   } else {
     shift_operand = g.UseUniqueRegister(m.node());
   }
@@ skipping 950 matching lines @@
          MachineOperatorBuilder::kFloat32RoundTruncate |
          MachineOperatorBuilder::kFloat64RoundTruncate |
          MachineOperatorBuilder::kFloat64RoundTiesAway |
          MachineOperatorBuilder::kWord32Popcnt |
          MachineOperatorBuilder::kWord64Popcnt;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8