Polymorphic inlining for some recognized methods in the optimizing compiler.

runtime/vm/intrinsifier_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"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
@@ skipping 118 matching lines @@
   __ addq(RDI, Immediate(kWordSize));
   __ jmp(&init_loop, Assembler::kNearJump);
   __ Bind(&done);
   __ ret();  // returns the newly allocated object in RAX.
 
   __ Bind(&fall_through);
   return false;
 }
 
 
-bool Intrinsifier::Array_getLength(Assembler* assembler) {
-  __ movq(RAX, Address(RSP, + 1 * kWordSize));
-  __ movq(RAX, FieldAddress(RAX, Array::length_offset()));
-  __ ret();
-  return true;
-}
-
-
-bool Intrinsifier::ImmutableArray_getLength(Assembler* assembler) {
-  return Array_getLength(assembler);
-}
-
-
 bool Intrinsifier::Array_getIndexed(Assembler* assembler) {
   Label fall_through;
   __ movq(RCX, Address(RSP, + 1 * kWordSize));  // Index.
   __ movq(RAX, Address(RSP, + 2 * kWordSize));  // Array.
   __ testq(RCX, Immediate(kSmiTagMask));
   __ j(NOT_ZERO, &fall_through, Assembler::kNearJump);  // Non-smi index.
   // Range check.
   __ cmpq(RCX, FieldAddress(RAX, Array::length_offset()));
   // Runtime throws exception.
   __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump);
@@ skipping 102 matching lines @@
   // Set the length field in the growable array object to 0.
   __ movq(FieldAddress(RAX, GrowableObjectArray::length_offset()),
           Immediate(0));
   __ ret();  // returns the newly allocated object in RAX.
 
   __ Bind(&fall_through);
   return false;
 }
 
 
-// Get length of growable object array.
-// On stack: growable array (+1), return-address (+0).
-bool Intrinsifier::GrowableArray_getLength(Assembler* assembler) {
-  __ movq(RAX, Address(RSP, + 1 * kWordSize));
-  __ movq(RAX, FieldAddress(RAX, GrowableObjectArray::length_offset()));
-  __ ret();
-  return true;
-}
-
-
 bool Intrinsifier::GrowableArray_getCapacity(Assembler* assembler) {
   __ movq(RAX, Address(RSP, + 1 * kWordSize));
   __ movq(RAX, FieldAddress(RAX, GrowableObjectArray::data_offset()));
   __ movq(RAX, FieldAddress(RAX, Array::length_offset()));
   __ ret();
   return true;
 }
 
 
 // Access growable object array at specified index.
@@ skipping 209 matching lines @@
   __ j(ABOVE_EQUAL, &done, Assembler::kNearJump);                              \
   __ movq(Address(RDI, 0), RBX);                                               \
   __ addq(RDI, Immediate(kWordSize));                                          \
   __ jmp(&init_loop, Assembler::kNearJump);                                    \
   __ Bind(&done);                                                              \
                                                                                \
   __ ret();                                                                    \
   __ Bind(&fall_through);                                                      \
 
 
-// Gets the length of a TypedData.
-bool Intrinsifier::TypedData_getLength(Assembler* assembler) {
-  __ movq(RAX, Address(RSP, + 1 * kWordSize));
-  __ movq(RAX, FieldAddress(RAX, TypedData::length_offset()));
-  __ ret();
-  // Generate enough code to satisfy patchability constraint.
-  intptr_t offset = __ CodeSize();
-  __ nop(JumpPattern::InstructionLength() - offset);
-  return true;
-}
-
-
 static ScaleFactor GetScaleFactor(intptr_t size) {
   switch (size) {
     case 1: return TIMES_1;
     case 2: return TIMES_2;
     case 4: return TIMES_4;
     case 8: return TIMES_8;
     case 16: return TIMES_16;
   }
   UNREACHABLE();
   return static_cast<ScaleFactor>(0);
@@ skipping 876 matching lines @@
   __ movq(RAX, FieldAddress(RAX, String::hash_offset()));
   __ cmpq(RAX, Immediate(0));
   __ j(EQUAL, &fall_through, Assembler::kNearJump);
   __ ret();
   __ Bind(&fall_through);
   // Hash not yet computed.
   return false;
 }
 
 
-bool Intrinsifier::String_getLength(Assembler* assembler) {
-  __ movq(RAX, Address(RSP, + 1 * kWordSize));  // String object.
-  __ movq(RAX, FieldAddress(RAX, String::length_offset()));
-  __ ret();
-  return true;
-}
-
-
 bool Intrinsifier::String_codeUnitAt(Assembler* assembler) {
   Label fall_through, try_two_byte_string;
   __ movq(RCX, Address(RSP, + 1 * kWordSize));  // Index.
   __ movq(RAX, Address(RSP, + 2 * kWordSize));  // String.
   __ testq(RCX, Immediate(kSmiTagMask));
   __ j(NOT_ZERO, &fall_through, Assembler::kNearJump);  // Non-smi index.
   // Range check.
   __ cmpq(RCX, FieldAddress(RAX, String::length_offset()));
   // Runtime throws exception.
   __ j(ABOVE_EQUAL, &fall_through, Assembler::kNearJump);
@@ skipping 250 matching lines @@
   __ Bind(&fall_through);
   return false;
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64