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

runtime/vm/stub_code_x64.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"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 2023 matching lines @@
 }
 
 
 // Called from megamorphic calls.
 //  RDI: receiver
 //  RBX: MegamorphicCache (preserved)
 // Passed to target:
 //  CODE_REG: target Code
 //  R10: arguments descriptor
 void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   // Jump if receiver is a smi.
   Label smi_case;
   __ testq(RDI, Immediate(kSmiTagMask));
   // Jump out of line for smi case.
   __ j(ZERO, &smi_case, Assembler::kNearJump);
 
   // Loads the cid of the object.
   __ LoadClassId(RAX, RDI);
 
   Label cid_loaded;
@@ skipping 51 matching lines @@
 }
 
 
 // Called from switchable IC calls.
 //  RDI: receiver
 //  RBX: ICData (preserved)
 // Passed to target:
 //  CODE_REG: target Code object
 //  R10: arguments descriptor
 void StubCode::GenerateICCallThroughFunctionStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label loop, found, miss;
-
   __ movq(R13, FieldAddress(RBX, ICData::ic_data_offset()));
   __ movq(R10, FieldAddress(RBX, ICData::arguments_descriptor_offset()));
   __ leaq(R13, FieldAddress(R13, Array::data_offset()));
   // R13: first IC entry
   __ LoadTaggedClassIdMayBeSmi(RAX, RDI);
   // RAX: receiver cid as Smi
 
   __ Bind(&loop);
   __ movq(R9, Address(R13, 0));
   __ cmpq(RAX, R9);
@@ skipping 16 matching lines @@
 
   __ Bind(&miss);
   __ LoadIsolate(RAX);
   __ movq(CODE_REG, Address(RAX, Isolate::ic_miss_code_offset()));
   __ movq(RCX, FieldAddress(CODE_REG, Code::entry_point_offset()));
   __ jmp(RCX);
 }
 
 
 void StubCode::GenerateICCallThroughCodeStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label loop, found, miss;
-
   __ movq(R13, FieldAddress(RBX, ICData::ic_data_offset()));
   __ movq(R10, FieldAddress(RBX, ICData::arguments_descriptor_offset()));
   __ leaq(R13, FieldAddress(R13, Array::data_offset()));
   // R13: first IC entry
   __ LoadTaggedClassIdMayBeSmi(RAX, RDI);
   // RAX: receiver cid as Smi
 
   __ Bind(&loop);
   __ movq(R9, Address(R13, 0));
   __ cmpq(RAX, R9);
@@ skipping 18 matching lines @@
   __ LoadIsolate(RAX);
   __ movq(CODE_REG, Address(RAX, Isolate::ic_miss_code_offset()));
   __ movq(RCX, FieldAddress(CODE_REG, Code::entry_point_offset()));
   __ jmp(RCX);
 }
 
 
 //  RDI: receiver
 //  RBX: UnlinkedCall
 void StubCode::GenerateUnlinkedCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   __ EnterStubFrame();
   __ pushq(RDI);  // Preserve receiver.
 
   __ pushq(Immediate(0));  // Result slot.
   __ pushq(RDI);           // Arg0: Receiver
   __ pushq(RBX);           // Arg1: UnlinkedCall
   __ CallRuntime(kUnlinkedCallRuntimeEntry, 2);
   __ popq(RBX);
   __ popq(RBX);
   __ popq(RBX);  // result = IC
 
   __ popq(RDI);  // Restore receiver.
   __ LeaveStubFrame();
 
   __ movq(CODE_REG, Address(THR, Thread::ic_lookup_through_code_stub_offset()));
   __ movq(RCX, FieldAddress(CODE_REG, Code::checked_entry_point_offset()));
   __ jmp(RCX);
 }
 
 
 // Called from switchable IC calls.
 //  RDI: receiver
 //  RBX: SingleTargetCache
 // Passed to target::
 //  CODE_REG: target Code object
 void StubCode::GenerateSingleTargetCallStub(Assembler* assembler) {
-  __ NoMonomorphicCheckedEntry();
-
   Label miss;
   __ LoadClassIdMayBeSmi(RAX, RDI);
   __ movl(R9, FieldAddress(RBX, SingleTargetCache::lower_limit_offset()));
   __ movl(R10, FieldAddress(RBX, SingleTargetCache::upper_limit_offset()));
   __ cmpq(RAX, R9);
   __ j(LESS, &miss, Assembler::kNearJump);
   __ cmpq(RAX, R10);
   __ j(GREATER, &miss, Assembler::kNearJump);
   __ movq(RCX, FieldAddress(RBX, SingleTargetCache::entry_point_offset()));
   __ movq(CODE_REG, FieldAddress(RBX, SingleTargetCache::target_offset()));
@@ skipping 40 matching lines @@
 }
 
 
 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) {
   __ int3();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64