Fastpath some spread-call desugaring.

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

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index b826c6cd4521f7eed3c482f9d41646aa08d7120e..abbf2085c666e80c7adb882150df3d1ba34e957c 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -2796,12 +2796,12 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
     __ Branch(&done, ne, result, Operand(scratch));
     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);
       __ lw(result, FieldMemOperand(result, Cell::kValueOffset));
       DeoptimizeIf(ne, instr, DeoptimizeReason::kHole, result,
-                   Operand(Smi::FromInt(Isolate::kArrayProtectorValid)));
+                   Operand(Smi::FromInt(Isolate::kProtectorValid)));
     }
     __ LoadRoot(result, Heap::kUndefinedValueRootIndex);
     __ bind(&done);