Active smi-only optimizations for large array literals.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 2ee1594f8671227fad384b33ea3192ce531c3a73..1cbac44225b39b74fe626848fcd2434ca2a4dd16 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1516,12 +1516,10 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
     __ RecordWriteField(
         r1, offset, result_register(), r2, kLRHasBeenSaved, kDontSaveFPRegs,
         EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
-    if (FLAG_smi_only_arrays) {
-      __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset));
-      __ CheckFastSmiOnlyElements(r3, r2, &no_map_change);
-      __ push(r6);  // Copy of array literal.
-      __ CallRuntime(Runtime::kNonSmiElementStored, 1);
-    }
+    __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset));
+    __ CheckFastSmiOnlyElements(r3, r2, &no_map_change);
+    __ push(r6);  // Copy of array literal.
+    __ CallRuntime(Runtime::kNonSmiElementStored, 1);
     __ bind(&no_map_change);
 
     PrepareForBailoutForId(expr->GetIdForElement(i), NO_REGISTERS);