New array bounds check elimination pass (focused on induction variables and bitwise operations).

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4308 matching lines @@
         ToInteger32(LConstantOperand::cast(instr->index()));
     if (instr->hydrogen()->length()->representation().IsSmi()) {
       __ mov(ip, Operand(Smi::FromInt(constant_index)));
     } else {
       __ mov(ip, Operand(constant_index));
     }
     __ cmp(ip, ToRegister(instr->length()));
   } else {
     __ cmp(ToRegister(instr->index()), ToRegister(instr->length()));
   }
-  DeoptimizeIf(hs, instr->environment());
+  Condition condition = instr->hydrogen()->allow_equality() ? hi : hs;
+  DeoptimizeIf(condition, instr->environment());
 }
 
 
 void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) {
   Register external_pointer = ToRegister(instr->elements());
   Register key = no_reg;
   ElementsKind elements_kind = instr->elements_kind();
   bool key_is_constant = instr->key()->IsConstantOperand();
   int constant_key = 0;
   if (key_is_constant) {
@@ skipping 1540 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal