Remove support for Javascript warnings in the VM.

runtime/vm/intermediate_language_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/compiler.h"
@@ skipping 6051 matching lines @@
     }
   } else {
     const Register length = length_loc.reg();
     const Register index = index_loc.reg();
     __ cmp(index, Operand(length));
     __ b(deopt, CS);
   }
 }
 
 
-static void EmitJavascriptIntOverflowCheck(FlowGraphCompiler* compiler,
-                                           Label* overflow,
-                                           Register result_lo,
-                                           Register result_hi) {
-  // Compare upper half.
-  Label check_lower;
-  __ CompareImmediate(result_hi, 0x00200000);
-  __ b(overflow, GT);
-  __ b(&check_lower, NE);
-
-  __ CompareImmediate(result_lo, 0);
-  __ b(overflow, HI);
-
-  __ Bind(&check_lower);
-  __ CompareImmediate(result_hi, -0x00200000);
-  __ b(overflow, LT);
-  // Anything in the lower part would make the number bigger than the lower
-  // bound, so we are done.
-}
-
-
 LocationSummary* BinaryMintOpInstr::MakeLocationSummary(Zone* zone,
                                                         bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary = new(zone) LocationSummary(
       zone, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
   summary->set_in(1, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
@@ skipping 57 matching lines @@
       // TODO(regis): Range analysis may eliminate the deopt check.
       __ cmp(left_hi, Operand(left_lo, ASR, 31));
       __ cmp(right_hi, Operand(right_lo, ASR, 31), EQ);
       __ b(deopt, NE);
       __ smull(out_lo, out_hi, left_lo, right_lo);
       break;
     }
     default:
       UNREACHABLE();
   }
-  if (FLAG_throw_on_javascript_int_overflow) {
-    EmitJavascriptIntOverflowCheck(compiler, deopt, out_lo, out_hi);
-  }
 }
 
 
 LocationSummary* ShiftMintOpInstr::MakeLocationSummary(Zone* zone,
                                                        bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary = new(zone) LocationSummary(
       zone, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
@@ skipping 125 matching lines @@
           __ cmp(left_hi, Operand(out_hi, ASR, shift), EQ);
           // Overflow if they aren't equal.
           __ b(deopt, NE);
         }
         break;
       }
       default:
         UNREACHABLE();
     }
   }
-
-  if (FLAG_throw_on_javascript_int_overflow) {
-    EmitJavascriptIntOverflowCheck(compiler, deopt, out_lo, out_hi);
-  }
 }
 
 
 LocationSummary* UnaryMintOpInstr::MakeLocationSummary(Zone* zone,
                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary = new(zone) LocationSummary(
       zone, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
   summary->set_out(0, Location::Pair(Location::RequiresRegister(),
                                      Location::RequiresRegister()));
   return summary;
 }
 
 
 void UnaryMintOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(op_kind() == Token::kBIT_NOT);
   PairLocation* left_pair = locs()->in(0).AsPairLocation();
   Register left_lo = left_pair->At(0).reg();
   Register left_hi = left_pair->At(1).reg();
 
   PairLocation* out_pair = locs()->out(0).AsPairLocation();
   Register out_lo = out_pair->At(0).reg();
   Register out_hi = out_pair->At(1).reg();
-
-  Label* deopt = NULL;
-
-  if (FLAG_throw_on_javascript_int_overflow) {
-    deopt = compiler->AddDeoptStub(deopt_id(), ICData::kDeoptUnaryMintOp);
-  }
   __ mvn(out_lo, Operand(left_lo));
   __ mvn(out_hi, Operand(left_hi));
-  if (FLAG_throw_on_javascript_int_overflow) {
-    EmitJavascriptIntOverflowCheck(compiler, deopt, out_lo, out_hi);
-  }
 }
 
 
 CompileType BinaryUint32OpInstr::ComputeType() const {
   return CompileType::Int();
 }
 
 
 CompileType ShiftUint32OpInstr::ComputeType() const {
   return CompileType::Int();
@@ skipping 492 matching lines @@
                                 1,
                                 locs());
   __ Drop(1);
   __ Pop(result);
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM