Revert "Avoid creating weak cells for literal arrays that are empty of literals."

src/builtins/arm64/builtins-arm64.cc

Index: src/builtins/arm64/builtins-arm64.cc
diff --git a/src/builtins/arm64/builtins-arm64.cc b/src/builtins/arm64/builtins-arm64.cc
index 12512cedbbefb938d847f876d2b8922dc959f57c..1b14c42c44af7c84f1a53ca09c6b1e25d59b47f9 100644
--- a/src/builtins/arm64/builtins-arm64.cc
+++ b/src/builtins/arm64/builtins-arm64.cc
@@ -1337,31 +1337,13 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   const int bailout_id = BailoutId::None().ToInt();
   __ Cmp(temp, Operand(Smi::FromInt(bailout_id)));
   __ B(ne, &loop_bottom);
-
   // Literals available?
-  Label got_literals, maybe_cleared_weakcell;
-  Register temp2 = x7;
   __ Ldr(temp, FieldMemOperand(array_pointer,
                                SharedFunctionInfo::kOffsetToPreviousLiterals));
-  // temp contains either a WeakCell pointing to the literals array or the
-  // literals array directly.
-  STATIC_ASSERT(WeakCell::kValueOffset == FixedArray::kLengthOffset);
-  __ Ldr(temp2, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ JumpIfSmi(temp2, &maybe_cleared_weakcell);
-  // temp2 is a pointer, therefore temp is a WeakCell pointing to a literals
-  // array.
   __ Ldr(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ jmp(&got_literals);
-
-  // r4 is a smi. If it's 0, then we are looking at a cleared WeakCell
-  // around the literals array, and we should visit the runtime. If it's > 0,
-  // then temp already contains the literals array.
-  __ bind(&maybe_cleared_weakcell);
-  __ Cmp(temp2, Operand(Smi::FromInt(0)));
-  __ B(eq, &gotta_call_runtime);
+  __ JumpIfSmi(temp, &gotta_call_runtime);
 
   // Save the literals in the closure.
-  __ bind(&got_literals);
   __ Str(temp, FieldMemOperand(closure, JSFunction::kLiteralsOffset));
   __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, x7,
                       kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,