Allow loading holes from holey smi arrays

src/mips64/lithium-codegen-mips64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/cpu-profiler.h"
 #include "src/hydrogen-osr.h"
@@ skipping 3317 matching lines @@
   if (hinstr->RequiresHoleCheck()) {
     if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) {
       __ SmiTst(result, scratch);
       DeoptimizeIf(ne, instr, Deoptimizer::kNotASmi, scratch,
                    Operand(zero_reg));
     } else {
       __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
       DeoptimizeIf(eq, instr, Deoptimizer::kHole, result, Operand(scratch));
     }
   } else if (instr->hydrogen()->hole_mode() == CONVERT_HOLE_TO_UNDEFINED) {
-    DCHECK(instr->hydrogen()->elements_kind() == FAST_HOLEY_ELEMENTS);
+    DCHECK(instr->hydrogen()->elements_kind() == FAST_HOLEY_SMI_ELEMENTS ||
+           instr->hydrogen()->elements_kind() == FAST_HOLEY_ELEMENTS);
     Label done;
     __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
     __ Branch(&done, ne, result, Operand(scratch));
     if (info()->IsStub()) {
       // A stub can safely convert the hole to undefined only if the array
       // protector cell contains (Smi) Isolate::kArrayProtectorValid. Otherwise
       // it needs to bail out.
       __ LoadRoot(result, Heap::kArrayProtectorRootIndex);
       // The comparison only needs LS bits of value, which is a smi.
       __ ld(result, FieldMemOperand(result, Cell::kValueOffset));
@@ skipping 2712 matching lines @@
   __ li(at, scope_info);
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal