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

src/builtins/mips/builtins-mips.cc

Index: src/builtins/mips/builtins-mips.cc
diff --git a/src/builtins/mips/builtins-mips.cc b/src/builtins/mips/builtins-mips.cc
index b8d91e01ee93dad828903e2d828d46e58c5e2671..dd4ad5b3e5ad91db87882972d43d325e46cde81c 100644
--- a/src/builtins/mips/builtins-mips.cc
+++ b/src/builtins/mips/builtins-mips.cc
@@ -1321,28 +1321,13 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
                               SharedFunctionInfo::kOffsetToPreviousOsrAstId));
   const int bailout_id = BailoutId::None().ToInt();
   __ Branch(&loop_bottom, ne, temp, Operand(Smi::FromInt(bailout_id)));
-
   // Literals available?
-  Label got_literals, maybe_cleared_weakcell;
   __ lw(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);
-  __ lw(t0, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ JumpIfSmi(t0, &maybe_cleared_weakcell);
-  // t0 is a pointer, therefore temp is a WeakCell pointing to a literals array.
   __ lw(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ jmp(&got_literals);
-
-  // t0 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);
-  __ Branch(&gotta_call_runtime, eq, t0, Operand(Smi::FromInt(0)));
+  __ JumpIfSmi(temp, &gotta_call_runtime);
 
   // Save the literals in the closure.
-  __ bind(&got_literals);
   __ lw(t0, MemOperand(sp, 0));
   __ sw(temp, FieldMemOperand(t0, JSFunction::kLiteralsOffset));
   __ push(index);