[wasm] Int64Lowering of I64Shl on ia32.

src/compiler/ia32/instruction-selector-ia32.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/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
@@ skipping 567 matching lines @@
 
 void InstructionSelector::VisitWord32Shr(Node* node) {
   VisitShift(this, node, kIA32Shr);
 }
 
 
 void InstructionSelector::VisitWord32Sar(Node* node) {
   VisitShift(this, node, kIA32Sar);
 }
 
+void InstructionSelector::VisitWord32PairShl(Node* node) {
+  IA32OperandGenerator g(this);
+
+  Node* shift = node->InputAt(2);
+  InstructionOperand shift_operand;
+  if (g.CanBeImmediate(shift)) {
+    shift_operand = g.UseImmediate(shift);
+  } else {
+    shift_operand = g.UseFixed(shift, ecx);
+  }
+  InstructionOperand inputs[] = {g.UseFixed(node->InputAt(0), eax),
+                                 g.UseFixed(node->InputAt(1), edx),
+                                 shift_operand};
+
+  InstructionOperand outputs[] = {
+      g.DefineAsFixed(node, eax),
+      g.DefineAsFixed(NodeProperties::FindProjection(node, 1), edx)};
+
+  Emit(kIA32PairShl, 2, outputs, 3, inputs);
+}
 
 void InstructionSelector::VisitWord32Ror(Node* node) {
   VisitShift(this, node, kIA32Ror);
 }
 
 
 void InstructionSelector::VisitWord32Clz(Node* node) {
   IA32OperandGenerator g(this);
   Emit(kIA32Lzcnt, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
@@ skipping 846 matching lines @@
              MachineOperatorBuilder::kFloat64RoundTruncate |
              MachineOperatorBuilder::kFloat32RoundTiesEven |
              MachineOperatorBuilder::kFloat64RoundTiesEven;
   }
   return flags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8