Remove obsolete LiveRange::FirstPosWithHint helper.

src/lithium-allocator.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 211 matching lines @@
 bool LiveRange::CanBeSpilled(LifetimePosition pos) {
   // We cannot spill a live range that has a use requiring a register
   // at the current or the immediate next position.
   UsePosition* use_pos = NextRegisterPosition(pos);
   if (use_pos == NULL) return true;
   return
       use_pos->pos().Value() > pos.NextInstruction().InstructionEnd().Value();
 }
 
 
-UsePosition* LiveRange::FirstPosWithHint() const {
-  UsePosition* pos = first_pos_;
-  while (pos != NULL && !pos->HasHint()) pos = pos->next();
-  return pos;
-}
-
-
 LOperand* LiveRange::CreateAssignedOperand(Zone* zone) {
   LOperand* op = NULL;
   if (HasRegisterAssigned()) {
     ASSERT(!IsSpilled());
     if (IsDouble()) {
       op = LDoubleRegister::Create(assigned_register(), zone);
     } else {
       op = LRegister::Create(assigned_register(), zone);
     }
   } else if (IsSpilled()) {
@@ skipping 1557 matching lines @@
   for (int i = 0; i < inactive_live_ranges_.length(); ++i) {
     LiveRange* cur_inactive = inactive_live_ranges_.at(i);
     ASSERT(cur_inactive->End().Value() > current->Start().Value());
     LifetimePosition next_intersection =
         cur_inactive->FirstIntersection(current);
     if (!next_intersection.IsValid()) continue;
     int cur_reg = cur_inactive->assigned_register();
     free_until_pos[cur_reg] = Min(free_until_pos[cur_reg], next_intersection);
   }
 
-  UsePosition* hinted_use = current->FirstPosWithHint();
-  if (hinted_use != NULL) {
-    LOperand* hint = hinted_use->hint();
-    if (hint->IsRegister() || hint->IsDoubleRegister()) {
-      int register_index = hint->index();
-      TraceAlloc(
-          "Found reg hint %s (free until [%d) for live range %d (end %d[).\n",
-          RegisterName(register_index),
-          free_until_pos[register_index].Value(),
-          current->id(),
-          current->End().Value());
+  LOperand* hint = current->FirstHint();
+  if (hint != NULL && (hint->IsRegister() || hint->IsDoubleRegister())) {
+    int register_index = hint->index();
+    TraceAlloc(
+        "Found reg hint %s (free until [%d) for live range %d (end %d[).\n",
+        RegisterName(register_index),
+        free_until_pos[register_index].Value(),
+        current->id(),
+        current->End().Value());
 
-      // The desired register is free until the end of the current live range.
-      if (free_until_pos[register_index].Value() >= current->End().Value()) {
-        TraceAlloc("Assigning preferred reg %s to live range %d\n",
-                   RegisterName(register_index),
-                   current->id());
-        SetLiveRangeAssignedRegister(current, register_index, mode_, zone_);
-        return true;
-      }
+    // The desired register is free until the end of the current live range.
+    if (free_until_pos[register_index].Value() >= current->End().Value()) {
+      TraceAlloc("Assigning preferred reg %s to live range %d\n",
+                 RegisterName(register_index),
+                 current->id());
+      SetLiveRangeAssignedRegister(current, register_index, mode_, zone_);
+      return true;
     }
   }
 
   // Find the register which stays free for the longest time.
   int reg = 0;
   for (int i = 1; i < RegisterCount(); ++i) {
     if (free_until_pos[i].Value() > free_until_pos[reg].Value()) {
       reg = i;
     }
   }
@@ skipping 342 matching lines @@
     LiveRange* current = live_ranges()->at(i);
     if (current != NULL) current->Verify();
   }
 }
 
 
 #endif
 
 
 } }  // namespace v8::internal