Revert^2 "Lazily allocate DexCache arrays."

We rarely need the DexCache for compiled code.
Delay the allocation in hope we never need it.
This reduces DexCache memory usage by ~25% at startup.

This reverts commit b9b7d91f5ceb0b738e1774992fd6fe205c6091e9.

Bug: b/181097963
Test: test.py -b --host
Test: run previously failing go/ab build in forrest
Change-Id: I818ad8f75d2d5387891a96edec49bc7933cd171f

1 files changed, 3 insertions, 2 deletions

diff --git a/runtime/class_linker_test.cc b/runtime/class_linker_test.cc
index e0f498d6aa..8e51149236 100644
--- a/runtime/class_linker_test.cc
+++ b/runtime/class_linker_test.cc
@@ -1541,8 +1541,9 @@ TEST_F(ClassLinkerTest, RegisterDexFileName) {
                                                         nullptr,
                                                         nullptr));
   // Make a copy of the dex cache with changed name.
-  LinearAlloc* alloc = Runtime::Current()->GetLinearAlloc();
-  dex_cache.Assign(class_linker->AllocAndInitializeDexCache(Thread::Current(), *dex_file, alloc));
+  dex_cache.Assign(class_linker->AllocAndInitializeDexCache(Thread::Current(),
+                                                            *dex_file,
+                                                            /* class_loader= */ nullptr));
   DCHECK_EQ(dex_cache->GetLocation()->CompareTo(location.Get()), 0);
   {
     WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);