BoundsCheck should be extended to support array_bounds_checks_elimination

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
===================================================================
--- src/mips/lithium-mips.cc	(revision 11854)
+++ src/mips/lithium-mips.cc	(working copy)
@@ -1606,6 +1606,9 @@
 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) {
   LOperand* value = UseRegisterAtStart(instr->index());
   LOperand* length = UseRegister(instr->length());
+  if (instr->lower_offset() != 0 || instr->upper_offset() != 0) {
+    UNIMPLEMENTED();
+  }
   return AssignEnvironment(new(zone()) LBoundsCheck(value, length));
 }