commit 98873affc25ef6bc96f8c65f828f28530b8f3fcd
author Vladimir Marko <vmarko@google.com> Wed Dec 16 12:10:03 2020 +0000
committer Vladimir Marko <vmarko@google.com> Fri Jan 08 13:44:10 2021 +0000
tree be471ad310edb1aa3a7b3df44528905ec7ce9a6c
parent 771708f3f0a15c1ae50617b4141c5f5dd47bf94f

arm64: Implement VarHandle intrinsics for byte array views.

Using benchmarks provided by
    https://android-review.googlesource.com/1420959
on blueline little cores with fixed frequency 1420800:
                             before after
GetByteArrayViewInt          27.093 0.024
SetByteArrayViewInt          28.067 0.024
GetByteArrayViewBigEndianInt 27.142 0.026
SetByteArrayViewBigEndianInt 28.040 0.025

Test: testrunner.py --target --64 --optimizing
Bug: 71781600
Change-Id: I604326675042bd63dce8ec15075714003ca9915d

compiler/optimizing/intrinsics_arm_vixl.cc

diff --git a/compiler/optimizing/intrinsics_arm_vixl.cc b/compiler/optimizing/intrinsics_arm_vixl.cc
index 94e207b..df214cc 100644
--- a/compiler/optimizing/intrinsics_arm_vixl.cc
+++ b/compiler/optimizing/intrinsics_arm_vixl.cc
@@ -3755,7 +3755,7 @@
   if (number_of_arguments == /* VarHandle object */ 1u + expected_coordinates_count) {
     return invoke->GetType();
   } else {
-    return invoke->InputAt(number_of_arguments - 1u)->GetType();
+    return GetDataTypeFromShorty(invoke, number_of_arguments - 1u);
   }
 }
 
@@ -4265,7 +4265,7 @@
   }
 
   uint32_t number_of_arguments = invoke->GetNumberOfArguments();
-  DataType::Type value_type = invoke->InputAt(number_of_arguments - 1u)->GetType();
+  DataType::Type value_type = GetDataTypeFromShorty(invoke, number_of_arguments - 1u);
   if ((kEmitCompilerReadBarrier && !kUseBakerReadBarrier) &&
       value_type == DataType::Type::kReference) {
     // Unsupported for non-Baker read barrier because the artReadBarrierSlow() ignores