New linear scan allocator.

runtime/vm/intermediate_language_x64.cc

Index: runtime/vm/intermediate_language_x64.cc
diff --git a/runtime/vm/intermediate_language_x64.cc b/runtime/vm/intermediate_language_x64.cc
index 2f76bd4e446ca874ae8c4875eaec4ee02b368225..e59b35042a98c9249ecc822b2c319bcbb74ab65b 100644
--- a/runtime/vm/intermediate_language_x64.cc
+++ b/runtime/vm/intermediate_language_x64.cc
@@ -463,8 +463,7 @@ LocationSummary* RelationalOpComp::MakeLocationSummary() const {
     const intptr_t kNumInputs = 2;
     const intptr_t kNumTemps = 1;
     LocationSummary* summary = new LocationSummary(kNumInputs,
-                                                   kNumTemps,
-                                                   LocationSummary::kCall);
+                                                   kNumTemps);
     summary->set_in(0, Location::RequiresRegister());
     summary->set_in(1, Location::RequiresRegister());
     if (!is_fused_with_branch()) {
@@ -1372,7 +1371,7 @@ LocationSummary* CheckStackOverflowComp::MakeLocationSummary() const {
   LocationSummary* summary = new LocationSummary(kNumInputs,
                                                  kNumTemps,
                                                  LocationSummary::kCall);
-  summary->set_temp(0, Location::RequiresRegister());
+  summary->set_temp(0, Location::RegisterLocation(R10));

[srdjan, 2012/07/19 22:54:39]

Document why R10.

[Vyacheslav Egorov (Google), 2012/07/24 12:26:41]

Done.

   return summary;
 }