- Move

runtime/vm/intermediate_language_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/intermediate_language.h"
 
 #include "vm/compiler.h"
@@ skipping 2584 matching lines @@
 }
 
 
 class CheckStackOverflowSlowPath : public SlowPathCode {
  public:
   explicit CheckStackOverflowSlowPath(CheckStackOverflowInstr* instruction)
       : instruction_(instruction) { }
 
   virtual void EmitNativeCode(FlowGraphCompiler* compiler) {
     if (FLAG_use_osr && osr_entry_label()->IsLinked()) {
-      uword flags_address = Isolate::Current()->stack_overflow_flags_address();
-      Register temp = instruction_->locs()->temp(0).reg();
       __ Comment("CheckStackOverflowSlowPathOsr");
       __ Bind(osr_entry_label());
-      if (FLAG_allow_absolute_addresses) {
-        __ LoadImmediate(temp, Immediate(flags_address));
-        __ movq(Address(temp, 0), Immediate(Isolate::kOsrRequest));
-      } else {
-        __ LoadIsolate(TMP);
-        __ movq(Address(TMP, Isolate::stack_overflow_flags_offset()),
-                Immediate(Isolate::kOsrRequest));
-      }
+      __ movq(Address(THR, Thread::stack_overflow_flags_offset()),
+              Immediate(Thread::kOsrRequest));
     }
     __ Comment("CheckStackOverflowSlowPath");
     __ Bind(entry_label());
     compiler->SaveLiveRegisters(instruction_->locs());
     // pending_deoptimization_env_ is needed to generate a runtime call that
     // may throw an exception.
     ASSERT(compiler->pending_deoptimization_env_ == NULL);
     Environment* env = compiler->SlowPathEnvironmentFor(instruction_);
     compiler->pending_deoptimization_env_ = env;
     compiler->GenerateRuntimeCall(instruction_->token_pos(),
@@ skipping 24 matching lines @@
   Label osr_entry_label_;
 };
 
 
 void CheckStackOverflowInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   CheckStackOverflowSlowPath* slow_path = new CheckStackOverflowSlowPath(this);
   compiler->AddSlowPathCode(slow_path);
 
   Register temp = locs()->temp(0).reg();
   // Generate stack overflow check.
-  if (compiler->is_optimizing() && FLAG_allow_absolute_addresses) {
-    __ LoadImmediate(
-        temp, Immediate(Isolate::Current()->stack_limit_address()));
-    __ cmpq(RSP, Address(temp, 0));
-  } else {
-    __ LoadIsolate(temp);
-    __ cmpq(RSP, Address(temp, Isolate::stack_limit_offset()));
-  }
+  __ cmpq(RSP, Address(THR, Thread::stack_limit_offset()));
   __ j(BELOW_EQUAL, slow_path->entry_label());
   if (compiler->CanOSRFunction() && in_loop()) {
     // In unoptimized code check the usage counter to trigger OSR at loop
     // stack checks.  Use progressively higher thresholds for more deeply
     // nested loops to attempt to hit outer loops with OSR when possible.
     __ LoadObject(temp, compiler->parsed_function().function());
     int32_t threshold =
         FLAG_optimization_counter_threshold * (loop_depth() + 1);
     __ cmpl(FieldAddress(temp, Function::usage_counter_offset()),
             Immediate(threshold));
@@ skipping 3843 matching lines @@
   __ Drop(1);
   __ popq(result);
 }
 
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64