Allow loading holes from holey smi arrays

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index b173e30a2bc6075fa376b8182fd6aaac71c4d555..4378418182522e51d9d4a7325644b43ae5ba1e5b 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3286,7 +3286,8 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
       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));