[crankshaft] Remove dead Variable hole-checking code

src/crankshaft/ia32/lithium-codegen-ia32.cc

Index: src/crankshaft/ia32/lithium-codegen-ia32.cc
diff --git a/src/crankshaft/ia32/lithium-codegen-ia32.cc b/src/crankshaft/ia32/lithium-codegen-ia32.cc
index 6401e560b313ee70a06becab98184408f36e4529..d18ef4fd85f23be9ca4ad3b27d89051da216dd44 100644
--- a/src/crankshaft/ia32/lithium-codegen-ia32.cc
+++ b/src/crankshaft/ia32/lithium-codegen-ia32.cc
@@ -2364,36 +2364,13 @@ void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) {
   Register context = ToRegister(instr->context());
   Register result = ToRegister(instr->result());
   __ mov(result, ContextOperand(context, instr->slot_index()));
-
-  if (instr->hydrogen()->RequiresHoleCheck()) {
-    __ cmp(result, factory()->the_hole_value());
-    if (instr->hydrogen()->DeoptimizesOnHole()) {
-      DeoptimizeIf(equal, instr, DeoptimizeReason::kHole);
-    } else {
-      Label is_not_hole;
-      __ j(not_equal, &is_not_hole, Label::kNear);
-      __ mov(result, factory()->undefined_value());
-      __ bind(&is_not_hole);
-    }
-  }
 }
 
 
 void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) {
   Register context = ToRegister(instr->context());
   Register value = ToRegister(instr->value());
-
-  Label skip_assignment;
-
   Operand target = ContextOperand(context, instr->slot_index());
-  if (instr->hydrogen()->RequiresHoleCheck()) {
-    __ cmp(target, factory()->the_hole_value());
-    if (instr->hydrogen()->DeoptimizesOnHole()) {
-      DeoptimizeIf(equal, instr, DeoptimizeReason::kHole);
-    } else {
-      __ j(not_equal, &skip_assignment, Label::kNear);
-    }
-  }
 
   __ mov(target, value);
   if (instr->hydrogen()->NeedsWriteBarrier()) {
@@ -2410,8 +2387,6 @@ void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) {
                               EMIT_REMEMBERED_SET,
                               check_needed);
   }
-
-  __ bind(&skip_assignment);
 }