tree 87ff5251f8f843e64e3f3632c423856ba14ceadf
parent cfea667ed9bfbdd21bf9812d1598603fc359d2e1
author Xueliang Zhong <xueliang.zhong@linaro.org> 1551970135 +0000
committer Ulyana Trafimovich <skvadrik@google.com> 1594906308 +0000

VIXL simulator for ART (Stage1)

Quick User Guide: test/README.simulator.md

This CL enables running ART run-tests in a simulator on host machine.
Some benefits of using this simulator approach:
- No need to use a target device at all.
  Save developers from solving the device troubles: build, flash, usb,
  adb, etc.
- Speed up development/debug/test cycle.
- Allows easy debugging/testing new instruction features without real
  hardware.
- Allows using a smaller AOSP Android manifest master-art.

The Stage1 CL provides support for running 30% of current run-tests.
The rest unsupported test cases are kept in knownfailures.json.

Future work will be supporting proper stack frame layout between
simulator and quick entrypoints, so that stack walk,
QuickArgumentVisitor, deoptimization, etc can be supported.

This CL adds libart(d)-simulator-container library to the ART APEX. It
has cause the following increase of the APEX size (small, about 0.13% for
release APEX, measured for target aosp_arm64-userdebug):
 Before:
   88992 com.android.art.debug.apex
   51612 com.android.art.release.apex
  112352 com.android.art.testing.apex
 After:
   89124 com.android.art.debug.apex
   51680 com.android.art.release.apex
  112468 com.android.art.testing.apex

Test: art/test.py --run-test --optimizing --simulate-arm64
Test: art/test.py --run-test --optimizing --host
Test: m test-art-host-gtest

Change-Id: I078812dde9aaf7128d9f262b2102251927596b7f