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| author | Vladimir Marko <vmarko@google.com> | 2018-07-25 15:42:46 +0100 |
|---|---|---|
| committer | Vladimir Marko <vmarko@google.com> | 2018-08-03 08:59:07 +0000 |
| commit | 3232dbb6df866985089b13a36c56e2b39dd473ab (patch) | |
| tree | 055f3e8888bfb3cfd072a981e4733cfaad7b202c /compiler/optimizing/codegen_test_utils.h | |
| parent | b27d874ebc0c067d96994a6ebe3c10eaeb2e4a75 (diff) | |
Do not save/restore regs in ClinitCheck slow path.
The entrypoint is kSaveEverything, so the only register that
needs to be saved is the argument/return value register.
The size of the aosp_taimen-userdebug prebuilts:
- before:
arm/boot*.oat: 16811692
arm64/boot*.oat: 19801032
oat/arm64/services.odex: 20232208
- after:
arm/boot*.oat: 16798804 (-12.6KiB, -0.08%)
arm64/boot*.oat: 19804392 (+3.3KiB, +0.02%)
oat/arm64/services.odex: 20227784 (-4.3KiB, -0.02%)
Note that though there is less code, the metadata for the
arm64/boot*.oat outweighs the code size reduction because of
the register map encoding as value+shift introduced in
https://android-review.googlesource.com/695682
which it's ill-suited for kSaveEverything entrypoints. We
should reconsider that encoding.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: Pixel 2 XL boots.
Test: testrunner.py --target --optimizing
Change-Id: I5cd1deb90332a3b88a0a59d87925c557d9bff1ab
Diffstat (limited to 'compiler/optimizing/codegen_test_utils.h')
0 files changed, 0 insertions, 0 deletions