Remove uses of RangeCanInclude() in flooring division by power of 2.

src/a64/lithium-a64.cc

 // Copyright 2013 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 1731 matching lines @@
   return DefineAsRegister(new(zone()) LMapEnumLength(map));
 }
 
 
 LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) {
   ASSERT(instr->representation().IsInteger32());
   ASSERT(instr->left()->representation().Equals(instr->representation()));
   ASSERT(instr->right()->representation().Equals(instr->representation()));
   LOperand* dividend = UseRegisterAtStart(instr->left());
   int32_t divisor = instr->right()->GetInteger32Constant();
-  LInstruction* result =
-      DefineSameAsFirst(new(zone()) LFlooringDivByPowerOf2I(dividend, divisor));
-  bool can_deopt =
-      (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
-      (instr->left()->RangeCanInclude(kMinInt) && divisor == -1);
-  return can_deopt ? AssignEnvironment(result) : result;
+  LInstruction* result = DefineAsRegister(new(zone()) LFlooringDivByPowerOf2I(
+          dividend, divisor));
+  if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
+      (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) {
+    result = AssignEnvironment(result);
+  }
+  return result;
 }
 
 
 LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) {
   ASSERT(instr->representation().IsInteger32());
   ASSERT(instr->left()->representation().Equals(instr->representation()));
   ASSERT(instr->right()->representation().Equals(instr->representation()));
   LOperand* dividend = UseRegister(instr->left());
   int32_t divisor = instr->right()->GetInteger32Constant();
   LInstruction* result =
@@ skipping 794 matching lines @@
 
 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
   LOperand* receiver = UseRegister(instr->receiver());
   LOperand* function = UseRegister(instr->function());
   LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function);
   return AssignEnvironment(DefineAsRegister(result));
 }
 
 
 } }  // namespace v8::internal