Revert "Revert CC related changes."

Disable entrypoint switching in ResetQuickAllocEntryPointsForThread
instead of callers. Fixes bug where instrumentation would switch
to non CC entrypoints for non X86_64 architectures causing aborts.

Bug: 31018974

Test: test-art-host
Test: test/run-test 099

This reverts commit 96172e0172c5fca6e9a5ad4b857a24d8c7b064e5.

Change-Id: If206694ae35ff4446c6a8a97bfbcbf2dac35e3f9
diff --git a/runtime/entrypoints/quick/quick_alloc_entrypoints.cc b/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
index 397655a..82bb8e5 100644
--- a/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
@@ -292,7 +292,7 @@
   entry_points_instrumented = instrumented;
 }
 
-void ResetQuickAllocEntryPoints(QuickEntryPoints* qpoints) {
+void ResetQuickAllocEntryPoints(QuickEntryPoints* qpoints, bool is_marking) {
 #if !defined(__APPLE__) || !defined(__LP64__)
   switch (entry_points_allocator) {
     case gc::kAllocatorTypeDlMalloc: {
@@ -320,7 +320,12 @@
     }
     case gc::kAllocatorTypeRegionTLAB: {
       CHECK(kMovingCollector);
-      SetQuickAllocEntryPoints_region_tlab(qpoints, entry_points_instrumented);
+      if (is_marking) {
+        SetQuickAllocEntryPoints_region_tlab(qpoints, entry_points_instrumented);
+      } else {
+        // Not marking means we need no read barriers and can just use the normal TLAB case.
+        SetQuickAllocEntryPoints_tlab(qpoints, entry_points_instrumented);
+      }
       return;
     }
     default:
@@ -328,6 +333,7 @@
   }
 #else
   UNUSED(qpoints);
+  UNUSED(is_marking);
 #endif
   UNIMPLEMENTED(FATAL);
   UNREACHABLE();