Remove default monomorphic check code from functions and stubs that do not need it.

runtime/vm/stub_code_arm64.cc

 // Copyright (c) 2014, 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"
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 2055 matching lines @@
 }
 
 
 // Called from megamorphic calls.
 //  R0: receiver
 //  R5: MegamorphicCache (preserved)
 // Passed to target:
 //  CODE_REG: target Code
 //  R4: arguments descriptor
 void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   // Jump if receiver is a smi.
   Label smi_case;
   __ TestImmediate(R0, kSmiTagMask);
   __ b(&smi_case, EQ);
 
   // Loads the cid of the object.
   __ LoadClassId(R0, R0);
 
   Label cid_loaded;
   __ Bind(&cid_loaded);
@@ skipping 53 matching lines @@
 }
 
 
 // Called from switchable IC calls.
 //  R0: receiver
 //  R5: ICData (preserved)
 // Passed to target:
 //  CODE_REG: target Code object
 //  R4: arguments descriptor
 void StubCode::GenerateICCallThroughFunctionStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label loop, found, miss;
   __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset()));
   __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset()));
   __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag);
   // R8: first IC entry
   __ LoadTaggedClassIdMayBeSmi(R1, R0);
   // R1: receiver cid as Smi
 
   __ Bind(&loop);
   __ ldr(R2, Address(R8, 0));
@@ skipping 15 matching lines @@
 
   __ Bind(&miss);
   __ LoadIsolate(R2);
   __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset()));
   __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset()));
   __ br(R1);
 }
 
 
 void StubCode::GenerateICCallThroughCodeStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label loop, found, miss;
   __ ldr(R4, FieldAddress(R5, ICData::arguments_descriptor_offset()));
   __ ldr(R8, FieldAddress(R5, ICData::ic_data_offset()));
   __ AddImmediate(R8, R8, Array::data_offset() - kHeapObjectTag);
   // R8: first IC entry
   __ LoadTaggedClassIdMayBeSmi(R1, R0);
   // R1: receiver cid as Smi
 
   __ Bind(&loop);
   __ ldr(R2, Address(R8, 0));
@@ skipping 18 matching lines @@
   __ ldr(CODE_REG, Address(R2, Isolate::ic_miss_code_offset()));
   __ ldr(R1, FieldAddress(CODE_REG, Code::entry_point_offset()));
   __ br(R1);
 }
 
 
 // Called from switchable IC calls.
 //  R0: receiver
 //  R5: SingleTargetCache
 void StubCode::GenerateUnlinkedCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   __ EnterStubFrame();
   __ Push(R0);  // Preserve receiver.
 
   __ Push(ZR);  // Result slot.
   __ Push(R0);  // Arg0: Receiver
   __ Push(R5);  // Arg1: UnlinkedCall
   __ CallRuntime(kUnlinkedCallRuntimeEntry, 2);
   __ Drop(2);
   __ Pop(R5);  // result = IC
 
   __ Pop(R0);  // Restore receiver.
   __ LeaveStubFrame();
 
   __ ldr(CODE_REG, Address(THR, Thread::ic_lookup_through_code_stub_offset()));
   __ ldr(R1, FieldAddress(CODE_REG, Code::checked_entry_point_offset()));
   __ br(R1);
 }
 
 
 // Called from switchable IC calls.
 //  R0: receiver
 //  R5: SingleTargetCache
 // Passed to target:
 //  CODE_REG: target Code object
 void StubCode::GenerateSingleTargetCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label miss;
-
   __ LoadClassIdMayBeSmi(R1, R0);
   __ ldr(R2, FieldAddress(R5, SingleTargetCache::lower_limit_offset()),
          kUnsignedWord);
   __ ldr(R3, FieldAddress(R5, SingleTargetCache::upper_limit_offset()),
          kUnsignedWord);
 
   __ cmp(R1, Operand(R2));
   __ b(&miss, LT);
   __ cmp(R1, Operand(R3));
   __ b(&miss, GT);
@@ skipping 43 matching lines @@
 }
 
 
 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) {
   __ brk(0);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64