Use ScopedArenaAllocator for code generation.

Reuse the memory previously allocated on the ArenaStack by
optimization passes.

This CL handles only the architecture-independent codegen
and slow paths, architecture-dependent codegen allocations
shall be moved to the ScopedArenaAllocator in a follow-up.

Memory needed to compile the two most expensive methods for
aosp_angler-userdebug boot image:
  BatteryStats.dumpCheckinLocked() : 19.6MiB -> 18.5MiB (-1189KiB)
  BatteryStats.dumpLocked(): 39.3MiB -> 37.0MiB (-2379KiB)

Also move definitions of functions that use bit_vector-inl.h
from bit_vector.h also to bit_vector-inl.h .

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 64312607
Change-Id: I84688c3a5a95bf90f56bd3a150bc31fedc95f29c

1 files changed, 9 insertions, 1 deletions

diff --git a/runtime/base/debug_stack.h b/runtime/base/debug_stack.h
index e19aecb712..886065db30 100644
--- a/runtime/base/debug_stack.h
+++ b/runtime/base/debug_stack.h
@@ -94,11 +94,19 @@ class DebugStackReferenceImpl {
   DebugStackReferenceImpl(const DebugStackReferenceImpl& other)
     : counter_(other.counter_), ref_count_(counter_->IncrementRefCount()) {
   }
+  DebugStackReferenceImpl(DebugStackReferenceImpl&& other)
+    : counter_(other.counter_), ref_count_(other.ref_count_) {
+    other.counter_ = nullptr;
+  }
   DebugStackReferenceImpl& operator=(const DebugStackReferenceImpl& other) {
     CHECK(counter_ == other.counter_);
     return *this;
   }
-  ~DebugStackReferenceImpl() { counter_->DecrementRefCount(); }
+  ~DebugStackReferenceImpl() {
+    if (counter_ != nullptr) {
+      counter_->DecrementRefCount();
+    }
+  }
   void CheckTop() { CHECK_EQ(counter_->GetRefCount(), ref_count_); }
 
  private: