Fastpath some spread-call desugaring.

src/crankshaft/arm/lithium-codegen-arm.cc

Index: src/crankshaft/arm/lithium-codegen-arm.cc
diff --git a/src/crankshaft/arm/lithium-codegen-arm.cc b/src/crankshaft/arm/lithium-codegen-arm.cc
index 76d0a6817c911f669ff39592b6ecf895e45f18a9..e092a9e040c7ac2dce6b975542a83378a110671a 100644
--- a/src/crankshaft/arm/lithium-codegen-arm.cc
+++ b/src/crankshaft/arm/lithium-codegen-arm.cc
@@ -2870,11 +2870,11 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
     __ b(ne, &done);
     if (info()->IsStub()) {
       // A stub can safely convert the hole to undefined only if the array
-      // protector cell contains (Smi) Isolate::kArrayProtectorValid. Otherwise
+      // protector cell contains (Smi) Isolate::kProtectorValid. Otherwise
       // it needs to bail out.
       __ LoadRoot(result, Heap::kArrayProtectorRootIndex);
       __ ldr(result, FieldMemOperand(result, Cell::kValueOffset));
-      __ cmp(result, Operand(Smi::FromInt(Isolate::kArrayProtectorValid)));
+      __ cmp(result, Operand(Smi::FromInt(Isolate::kProtectorValid)));
       DeoptimizeIf(ne, instr, DeoptimizeReason::kHole);
     }
     __ LoadRoot(result, Heap::kUndefinedValueRootIndex);