More shared code.

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2012, 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/flow_graph_compiler.h"
 
 #include "lib/error.h"
 #include "vm/ast_printer.h"
 #include "vm/code_descriptors.h"
 #include "vm/code_generator.h"
-#include "vm/debugger.h"
 #include "vm/disassembler.h"
 #include "vm/il_printer.h"
-#include "vm/intrinsifier.h"
 #include "vm/locations.h"
-#include "vm/longjump.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, print_scopes, false, "Print scopes of local variables.");
 DEFINE_FLAG(bool, trace_functions, false, "Trace entry of each function.");
 DECLARE_FLAG(bool, enable_type_checks);
-DECLARE_FLAG(bool, intrinsify);
-DECLARE_FLAG(int, optimization_counter_threshold);
 DECLARE_FLAG(bool, print_ast);
-DECLARE_FLAG(bool, report_usage_count);
 DECLARE_FLAG(bool, code_comments);
 
 
 void DeoptimizationStub::GenerateCode(FlowGraphCompilerShared* compiler) {
   Assembler* assem = compiler->assembler();
 #define __ assem->
   __ Comment("Deopt stub for id %d", deopt_id_);
   __ Bind(entry_label());
   for (intptr_t i = 0; i < registers_.length(); i++) {
     if (registers_[i] != kNoRegister) {
@@ skipping 13 matching lines @@
 FlowGraphCompiler::FlowGraphCompiler(
     Assembler* assembler,
     const ParsedFunction& parsed_function,
     const GrowableArray<BlockEntryInstr*>& block_order,
     bool is_optimizing)
     : FlowGraphCompilerShared(assembler,
                               parsed_function,
                               block_order,
                               is_optimizing) {}
 
-
-void FlowGraphCompiler::Bailout(const char* reason) {
-  const char* kFormat = "FlowGraphCompiler Bailout: %s %s.";
-  const char* function_name = parsed_function().function().ToCString();
-  intptr_t len = OS::SNPrint(NULL, 0, kFormat, function_name, reason) + 1;
-  char* chars = reinterpret_cast<char*>(
-      Isolate::Current()->current_zone()->Allocate(len));
-  OS::SNPrint(chars, len, kFormat, function_name, reason);
-  const Error& error = Error::Handle(
-      LanguageError::New(String::Handle(String::New(chars))));
-  Isolate::Current()->long_jump_base()->Jump(1, error);
-}
-
-
 #define __ assembler()->
 
 
 // Jumps to labels 'is_instance' or 'is_not_instance' respectively, if
 // type test is conclusive, otherwise fallthrough if a type test could not
 // be completed.
 // RAX: instance (must survive),
 RawSubtypeTestCache*
 FlowGraphCompiler::GenerateInstantiatedTypeWithArgumentsTest(
     intptr_t cid,
@@ skipping 463 matching lines @@
     } else {
       __ LoadObject(dst, value->AsConstant()->value());
     }
   } else {
     ASSERT(value->IsUse());
     __ popq(dst);
   }
 }
 
 
-void FlowGraphCompiler::EmitInstanceCall(intptr_t cid,
-                                         intptr_t token_index,
-                                         intptr_t try_index,
-                                         const String& function_name,
-                                         intptr_t argument_count,
-                                         const Array& argument_names,
-                                         intptr_t checked_argument_count) {
-  ICData& ic_data =
-      ICData::ZoneHandle(ICData::New(parsed_function().function(),
-                                     function_name,
-                                     cid,
-                                     checked_argument_count));
-  const Array& arguments_descriptor =
-      CodeGenerator::ArgumentsDescriptor(argument_count, argument_names);
+intptr_t FlowGraphCompiler::EmitInstanceCall(ExternalLabel* target_label,
+                                         const ICData& ic_data,
+                                         const Array& arguments_descriptor,
+                                         intptr_t argument_count) {
   __ LoadObject(RBX, ic_data);
   __ LoadObject(R10, arguments_descriptor);
 
-  uword label_address = 0;
-  switch (checked_argument_count) {
-    case 1:
-      label_address = StubCode::OneArgCheckInlineCacheEntryPoint();
-      break;
-    case 2:
-      label_address = StubCode::TwoArgsCheckInlineCacheEntryPoint();
-      break;
-    default:
-      UNIMPLEMENTED();
-  }
-  ExternalLabel target_label("InlineCache", label_address);
-  __ call(&target_label);
-  AddCurrentDescriptor(PcDescriptors::kIcCall, cid, token_index, try_index);
+  __ call(target_label);
+  const intptr_t descr_offset = assembler()->CodeSize();
   __ Drop(argument_count);
+  return descr_offset;
+}
+
+intptr_t FlowGraphCompiler::EmitStaticCall(const Function& function,
+                                           const Array& arguments_descriptor,
+                                           intptr_t argument_count) {
+  __ LoadObject(RBX, function);
+  __ LoadObject(R10, arguments_descriptor);
+  __ call(&StubCode::CallStaticFunctionLabel());
+  const intptr_t descr_offset = assembler()->CodeSize();
+  __ Drop(argument_count);
+  return descr_offset;
 }
 
 
-void FlowGraphCompiler::EmitStaticCall(intptr_t token_index,
-                                       intptr_t try_index,
-                                       const Function& function,
-                                       intptr_t argument_count,
-                                       const Array& argument_names) {
-  const Array& arguments_descriptor =
-      CodeGenerator::ArgumentsDescriptor(argument_count, argument_names);
-  __ LoadObject(RBX, function);
-  __ LoadObject(R10, arguments_descriptor);
-
-  GenerateCall(token_index,
-               try_index,
-               &StubCode::CallStaticFunctionLabel(),
-               PcDescriptors::kFuncCall);
-  __ Drop(argument_count);
-}
-
-
 // Optimize instanceof type test by adding inlined tests for:
 // - NULL -> return false.
 // - Smi -> compile time subtype check (only if dst class is not parameterized).
 // - Class equality (only if class is not parameterized).
 // Inputs:
 // - RAX: object.
 // - RDX: instantiator type arguments or raw_null.
 // - RCX: instantiator or raw_null.
 // Destroys RCX and RDX.
 // Returns:
@@ skipping 312 matching lines @@
   __ jmp(&null_args_loop_condition, Assembler::kNearJump);
   const Address original_argument_addr(RBP, RCX, TIMES_8, 2 * kWordSize);
   __ Bind(&null_args_loop);
   __ movq(original_argument_addr, raw_null);
   __ Bind(&null_args_loop_condition);
   __ decq(RCX);
   __ j(POSITIVE, &null_args_loop, Assembler::kNearJump);
 }
 
 
-bool FlowGraphCompiler::CanOptimize() {
-  return
-      !FLAG_report_usage_count &&
-      (FLAG_optimization_counter_threshold >= 0) &&
-      !Isolate::Current()->debugger()->IsActive();
-}
-
-
-void FlowGraphCompiler::IntrinsifyGetter() {
+void FlowGraphCompiler::GenerateInlinedGetter(intptr_t offset) {
   // TOS: return address.
   // +1 : receiver.
   // Sequence node has one return node, its input is load field node.
-  const SequenceNode& sequence_node = *parsed_function().node_sequence();
-  ASSERT(sequence_node.length() == 1);
-  ASSERT(sequence_node.NodeAt(0)->IsReturnNode());
-  const ReturnNode& return_node = *sequence_node.NodeAt(0)->AsReturnNode();
-  ASSERT(return_node.value()->IsLoadInstanceFieldNode());
-  const LoadInstanceFieldNode& load_node =
-      *return_node.value()->AsLoadInstanceFieldNode();
   __ movq(RAX, Address(RSP, 1 * kWordSize));
-  __ movq(RAX, FieldAddress(RAX, load_node.field().Offset()));
+  __ movq(RAX, FieldAddress(RAX, offset));
   __ ret();
 }
 
 
-void FlowGraphCompiler::IntrinsifySetter() {
+void FlowGraphCompiler::GenerateInlinedSetter(intptr_t offset) {
   // TOS: return address.
   // +1 : value
   // +2 : receiver.
   // Sequence node has one store node and one return NULL node.
-  const SequenceNode& sequence_node = *parsed_function().node_sequence();
-  ASSERT(sequence_node.length() == 2);
-  ASSERT(sequence_node.NodeAt(0)->IsStoreInstanceFieldNode());
-  ASSERT(sequence_node.NodeAt(1)->IsReturnNode());
-  const StoreInstanceFieldNode& store_node =
-      *sequence_node.NodeAt(0)->AsStoreInstanceFieldNode();
   __ movq(RAX, Address(RSP, 2 * kWordSize));  // Receiver.
   __ movq(RBX, Address(RSP, 1 * kWordSize));  // Value.
-  __ StoreIntoObject(RAX, FieldAddress(RAX, store_node.field().Offset()), RBX);
+  __ StoreIntoObject(RAX, FieldAddress(RAX, offset), RBX);
   const Immediate raw_null =
       Immediate(reinterpret_cast<intptr_t>(Object::null()));
   __ movq(RAX, raw_null);
   __ ret();
 }
 
 
-// Returns 'true' if code generation for this function is complete, i.e.,
-// no fall-through to regular code is needed.
-bool FlowGraphCompiler::TryIntrinsify() {
-  if (!CanOptimize()) return false;
-  // Intrinsification skips arguments checks, therefore disable if in checked
-  // mode.
-  if (FLAG_intrinsify && !FLAG_trace_functions && !FLAG_enable_type_checks) {
-    if ((parsed_function().function().kind() == RawFunction::kImplicitGetter)) {
-      IntrinsifyGetter();
-      return true;
-    }
-    if ((parsed_function().function().kind() == RawFunction::kImplicitSetter)) {
-      IntrinsifySetter();
-      return true;
-    }
-  }
-  // Even if an intrinsified version of the function was successfully
-  // generated, it may fall through to the non-intrinsified method body.
-  if (!FLAG_trace_functions) {
-    return Intrinsifier::Intrinsify(parsed_function().function(), assembler());
-  }
-  return false;
-}
-
-
 void FlowGraphCompiler::CompileGraph() {
   InitCompiler();
   if (TryIntrinsify()) {
     // Make it patchable: code must have a minimum code size, nop(2) increases
     // the minimum code size appropriately.
     __ nop(2);
     __ int3();
     __ jmp(&StubCode::FixCallersTargetLabel());
     return;
   }
@@ skipping 94 matching lines @@
 
 void FlowGraphCompiler::GenerateCallRuntime(intptr_t cid,
                                             intptr_t token_index,
                                             intptr_t try_index,
                                             const RuntimeEntry& entry) {
   __ CallRuntime(entry);
   AddCurrentDescriptor(PcDescriptors::kOther, cid, token_index, try_index);
 }
 
 
-void FlowGraphCompiler::FinalizeComments(const Code& code) {
-  code.set_comments(assembler()->GetCodeComments());
-}
-
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64