Optimizing: Tag more arena allocations.

Replace GrowableArray with ArenaVector and tag arena
allocations with new allocation types.

As part of this, make the register allocator a bit more
efficient, doing bulk insert/erase. Some loops are now
O(n) instead of O(n^2).

Change-Id: Ifac0871ffb34b121cc0447801a2d07eefd308c14

1 files changed, 3 insertions, 6 deletions

diff --git a/compiler/optimizing/locations.cc b/compiler/optimizing/locations.cc
index d14dfc190f..ebdf7a2f65 100644
--- a/compiler/optimizing/locations.cc
+++ b/compiler/optimizing/locations.cc
@@ -23,18 +23,15 @@ namespace art {
 LocationSummary::LocationSummary(HInstruction* instruction,
                                  CallKind call_kind,
                                  bool intrinsified)
-    : inputs_(instruction->GetBlock()->GetGraph()->GetArena(), instruction->InputCount()),
-      temps_(instruction->GetBlock()->GetGraph()->GetArena(), 0),
+    : inputs_(instruction->InputCount(),
+              instruction->GetBlock()->GetGraph()->GetArena()->Adapter(kArenaAllocLocationSummary)),
+      temps_(instruction->GetBlock()->GetGraph()->GetArena()->Adapter(kArenaAllocLocationSummary)),
       output_overlaps_(Location::kOutputOverlap),
       call_kind_(call_kind),
       stack_mask_(nullptr),
       register_mask_(0),
       live_registers_(),
       intrinsified_(intrinsified) {
-  inputs_.SetSize(instruction->InputCount());
-  for (size_t i = 0; i < instruction->InputCount(); ++i) {
-    inputs_.Put(i, Location());
-  }
   instruction->SetLocations(this);
 
   if (NeedsSafepoint()) {