New linear scan allocator.

runtime/vm/intermediate_language_ia32.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_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 637 matching lines @@
 
 LocationSummary* NativeCallComp::MakeLocationSummary() const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 3;
   LocationSummary* locs = new LocationSummary(kNumInputs,
                                               kNumTemps,
                                               LocationSummary::kCall);
   locs->set_temp(0, Location::RegisterLocation(EAX));
   locs->set_temp(1, Location::RegisterLocation(ECX));
   locs->set_temp(2, Location::RegisterLocation(EDX));
-  locs->set_out(Location::RequiresRegister());
+  locs->set_out(Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 void NativeCallComp::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(locs()->temp(0).reg() == EAX);
   ASSERT(locs()->temp(1).reg() == ECX);
   ASSERT(locs()->temp(2).reg() == EDX);
   Register result = locs()->out().reg();
 
@@ skipping 725 matching lines @@
   const ExternalLabel label("alloc_context",
                             StubCode::AllocateContextEntryPoint());
   compiler->GenerateCall(token_pos(),
                          try_index(),
                          &label,
                          PcDescriptors::kOther);
 }
 
 
 LocationSummary* CloneContextComp::MakeLocationSummary() const {
-  return LocationSummary::Make(1,
-                               Location::RequiresRegister(),
-                               LocationSummary::kCall);
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 0;
+  LocationSummary* locs = new LocationSummary(kNumInputs,
+                                              kNumTemps,
+                                              LocationSummary::kCall);
+  locs->set_in(0, Location::RegisterLocation(EAX));
+  locs->set_out(Location::RegisterLocation(EAX));
+  return locs;
 }
 
 
 void CloneContextComp::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register context_value = locs()->in(0).reg();
   Register result = locs()->out().reg();
 
   __ PushObject(Object::ZoneHandle());  // Make room for the result.
   __ pushl(context_value);
   compiler->GenerateCallRuntime(cid(),
@@ skipping 749 matching lines @@
   ASSERT(locs()->out().reg() == EAX);
   __ CompareObject(locs()->out().reg(), compiler->bool_true());
   EmitBranchOnCondition(compiler, branch_condition);
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64