Allow arguments in safepoints with registers.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index f3f80032a755dfa1eefe32f3d34070c7a84ff9c6..9c0287b6cd251e6b331cc653204c8f9cca909cf5 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -5987,14 +5987,9 @@ int Code::SourceStatementPosition(Address pc) {
 }
 
 
-uint8_t* Code::GetSafepointEntry(Address pc) {
+SafepointEntry Code::GetSafepointEntry(Address pc) {
   SafepointTable table(this);
-  unsigned pc_offset = static_cast<unsigned>(pc - instruction_start());
-  for (unsigned i = 0; i < table.length(); i++) {
-    // TODO(kasperl): Replace the linear search with binary search.
-    if (table.GetPcOffset(i) == pc_offset) return table.GetEntry(i);
-  }
-  return NULL;
+  return table.FindEntry(pc);
 }
 
 
@@ -6265,7 +6260,7 @@ void Code::Disassemble(const char* name, FILE* out) {
       PrintF(out, "%p  %4d  ", (instruction_start() + pc_offset), pc_offset);
       table.PrintEntry(i);
       PrintF(out, " (sp -> fp)");
-      int deoptimization_index = table.GetDeoptimizationIndex(i);
+      int deoptimization_index = table.GetEntry(i).deoptimization_index();
       if (deoptimization_index != Safepoint::kNoDeoptimizationIndex) {
         PrintF(out, "  %6d", deoptimization_index);
       } else {