Direct calls to @CriticalNative methods.

Emit direct calls from compiled managed code to the native
code registered with the method, avoiding the JNI stub.

Golem results:
art-opt-cc                       x86 x86-64    arm  arm64
NativeDowncallStaticCritical  +12.5% +62.5% +75.9% +41.7%
NativeDowncallStaticCritical6 +55.6% +87.5% +72.1% +35.3%
art-opt                          x86 x86-64    arm  arm64
NativeDowncallStaticCritical  +28.6% +85.6% +76.4% +38.4%
NativeDowncallStaticCritical6 +44.6% +44.6% +74.6% +32.2%

Test: Covered by 178-app-image-native-method.
Test: m test-art-host-gtest
Test: testrunner.py --host --debuggable --ndebuggable \
          --optimizing --jit --jit-on-first-use
Test: run-gtests.sh
Test: testrunner.py --target --optimizing
Test: testrunner.py --target --debuggable --ndebuggable \
          --optimizing --jit --jit-on-first-use -t 178
Test: aosp_cf_x86_phone-userdebug boots.
Test: aosp_cf_x86_phone-userdebug/jitzygote boots.
Bug: 112189621
Change-Id: I8b37da51e8fe0b7bc513bb81b127fe0416068866

1 files changed, 5 insertions, 0 deletions

diff --git a/runtime/entrypoints/entrypoint_utils.h b/runtime/entrypoints/entrypoint_utils.h
index 85082d389d..dfc1eddde3 100644
--- a/runtime/entrypoints/entrypoint_utils.h
+++ b/runtime/entrypoints/entrypoint_utils.h
@@ -44,6 +44,7 @@ class ArtField;
 class ArtMethod;
 class HandleScope;
 enum InvokeType : uint32_t;
+class MethodReference;
 class OatQuickMethodHeader;
 class ScopedObjectAccessAlreadyRunnable;
 class Thread;
@@ -218,6 +219,10 @@ constexpr size_t kJniCookieSize = sizeof(uint32_t);
 inline HandleScope* GetGenericJniHandleScope(ArtMethod** managed_sp,
                                              size_t num_handle_scope_references);
 
+// Update .bss method entrypoint if the `callee_reference` has an associated oat file
+// and that oat file has a .bss entry for the `callee_reference`.
+void MaybeUpdateBssMethodEntry(ArtMethod* callee, MethodReference callee_reference);
+
 }  // namespace art
 
 #endif  // ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_