[ia32][wasm] Support AVX instructions for I32x4Splat/ReplaceLane/ExtractLane

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 1900 matching lines @@
 
 void InstructionSelector::VisitI32x4ExtractLane(Node* node) {
   IA32OperandGenerator g(this);
   int32_t lane = OpParameter<int32_t>(node);
   Emit(kIA32I32x4ExtractLane, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)), g.UseImmediate(lane));
 }
 
 void InstructionSelector::VisitI32x4ReplaceLane(Node* node) {
   IA32OperandGenerator g(this);
-  int32_t lane = OpParameter<int32_t>(node);
-  Emit(kIA32I32x4ReplaceLane, g.DefineSameAsFirst(node),
-       g.UseRegister(node->InputAt(0)), g.UseImmediate(lane),
-       g.Use(node->InputAt(1)));
+  InstructionOperand operand0 = g.UseRegister(node->InputAt(0));
+  InstructionOperand operand1 = g.UseImmediate(OpParameter<int32_t>(node));
+  InstructionOperand operand2 = g.Use(node->InputAt(1));
+  if (IsSupported(AVX)) {
+    Emit(kAVXI32x4ReplaceLane, g.DefineAsRegister(node), operand0, operand1,
+         operand2);
+  } else {
+    Emit(kSSEI32x4ReplaceLane, g.DefineSameAsFirst(node), operand0, operand1,
+         operand2);
+  }
 }
 
 void InstructionSelector::VisitInt32AbsWithOverflow(Node* node) {
   UNREACHABLE();
 }
 
 void InstructionSelector::VisitInt64AbsWithOverflow(Node* node) {
   UNREACHABLE();
 }
 
@@ skipping 22 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8