[Turbofan] SIMD tests for Int32x4Add, Sub, ReplaceLane.

src/compiler/x64/instruction-selector-x64.cc

Index: src/compiler/x64/instruction-selector-x64.cc
diff --git a/src/compiler/x64/instruction-selector-x64.cc b/src/compiler/x64/instruction-selector-x64.cc
index c5e31278d9c2263bded185314a5529e58aec7ff0..91495af95870d2c8f430a8069b464c562e1ee150 100644
--- a/src/compiler/x64/instruction-selector-x64.cc
+++ b/src/compiler/x64/instruction-selector-x64.cc
@@ -2320,6 +2320,25 @@ void InstructionSelector::VisitInt32x4ExtractLane(Node* node) {
        g.UseRegister(node->InputAt(0)), g.UseImmediate(node->InputAt(1)));
 }
 
+void InstructionSelector::VisitInt32x4ReplaceLane(Node* node) {
+  X64OperandGenerator g(this);
+  Emit(kX64Int32x4ReplaceLane, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)), g.UseImmediate(node->InputAt(1)),
+       g.Use(node->InputAt(2)));
+}
+
+void InstructionSelector::VisitInt32x4Add(Node* node) {
+  X64OperandGenerator g(this);
+  Emit(kX64Int32x4Add, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)), g.UseRegister(node->InputAt(1)));
+}
+
+void InstructionSelector::VisitInt32x4Sub(Node* node) {
+  X64OperandGenerator g(this);
+  Emit(kX64Int32x4Sub, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)), g.UseRegister(node->InputAt(1)));
+}
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {