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 93801fa070a4a4c0d97d2045968a33e5c44a8f7e..5f4ebdd1f3e831785c53095682458e192c58972a 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -2784,7 +2784,7 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
       __ 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);