Revert of Collect type feedback on result of Math.[round|ceil|floor]

src/mips/macro-assembler-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
@@ skipping 4584 matching lines @@
 
 
 void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
   DCHECK(!target.is(a1));
   GetBuiltinFunction(a1, id);
   // Load the code entry point from the builtins object.
   lw(target, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
 }
 
 
-void MacroAssembler::BranchIfNotBuiltin(Register function, Register temp,
-                                        BuiltinFunctionId id, Label* miss) {
-  DCHECK(!temp.is(at));
-  lw(temp, FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset));
-  lw(temp, FieldMemOperand(temp, SharedFunctionInfo::kFunctionDataOffset));
-  Branch(miss, ne, temp, Operand(Smi::FromInt(id)));
-}
-
-
 void MacroAssembler::SetCounter(StatsCounter* counter, int value,
                                 Register scratch1, Register scratch2) {
   if (FLAG_native_code_counters && counter->Enabled()) {
     li(scratch1, Operand(value));
     li(scratch2, Operand(ExternalReference(counter)));
     sw(scratch1, MemOperand(scratch2));
   }
 }
 
 
@@ skipping 1430 matching lines @@
   }
   if (mag.shift > 0) sra(result, result, mag.shift);
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS