jni: Do not create a managed frame for @CriticalNative.

Omit managed frame for @CriticalNative methods, do not check
for exceptions and and make a tail call when possible.
Pass the method pointer in a hidden argument to prepare for
implementing late binding for @CriticalNative methods.

This changes only the JNI compiler, Generic JNI shall be
updated in a separate change.

Performance improvements reported by Golem (art-opt-cc):
                                 x86 x86-64    arm  arm64
NativeDowncallStaticCritical6   +17%   +50%   +88%  +139%
NativeDowncallStaticCritical    +37%   +32%  +103%  +216%

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: aosp_taimen-userdebug boots.
Test: run-gtests.sh
Test: testrunner.py --target --optimizing
Bug: 112189621
Change-Id: I5758c8f478627f2eee8f615b4537a907c211b9f8

1 files changed, 11 insertions, 0 deletions

diff --git a/compiler/utils/mips/assembler_mips.cc b/compiler/utils/mips/assembler_mips.cc
index a9d1a25530..6b73695208 100644
--- a/compiler/utils/mips/assembler_mips.cc
+++ b/compiler/utils/mips/assembler_mips.cc
@@ -5191,6 +5191,17 @@ void MipsAssembler::VerifyObject(FrameOffset src ATTRIBUTE_UNUSED,
   // TODO: not validating references.
 }
 
+void MipsAssembler::Jump(ManagedRegister mbase, Offset offset, ManagedRegister mscratch) {
+  MipsManagedRegister base = mbase.AsMips();
+  MipsManagedRegister scratch = mscratch.AsMips();
+  CHECK(base.IsCoreRegister()) << base;
+  CHECK(scratch.IsCoreRegister()) << scratch;
+  LoadFromOffset(kLoadWord, scratch.AsCoreRegister(),
+                 base.AsCoreRegister(), offset.Int32Value());
+  Jr(scratch.AsCoreRegister());
+  NopIfNoReordering();
+}
+
 void MipsAssembler::Call(ManagedRegister mbase, Offset offset, ManagedRegister mscratch) {
   MipsManagedRegister base = mbase.AsMips();
   MipsManagedRegister scratch = mscratch.AsMips();