Add programs to compare R8 and ProGuard output sizes
The script r8lib_size_compare.py runs R8 and ProGuard on r8.jar to
produce a minified r8lib.jar that keeps everything marked @Keep.
By default, inlining is disabled in both R8 and ProGuard to make
method-by-method comparison much easier. Pass --inlining to enable
inlining.
By default, the script only shows methods where R8's DEX output is 5 or
more instructions larger than ProGuard+D8's output. Pass --threshold 0
to display all methods.
* Pass extra keyword arguments from build_r8lib() to toolhelper.run() to
allow disabling inlining in R8 by passing the system property
-Dcom.android.tools.r8.disableinlining=1 to the JVM.
Change-Id: I35e2b0742c39a4a09aa61bc2bbc857cca8594843
diff --git a/tools/build_r8lib.py b/tools/build_r8lib.py
index c855bc5..4b7473e 100755
--- a/tools/build_r8lib.py
+++ b/tools/build_r8lib.py
@@ -25,16 +25,21 @@
ANDROID_JAR = 'third_party/android_jar/lib-v%s/android.jar' % API_LEVEL
-def build_r8lib():
+def build_r8lib(output_path=None, output_map=None, **kwargs):
+ if output_path is None:
+ output_path = R8LIB_JAR
+ if output_map is None:
+ output_map = R8LIB_MAP_FILE
toolhelper.run(
'r8',
('--release',
'--classfile',
'--lib', utils.RT_JAR,
utils.R8_JAR,
- '--output', R8LIB_JAR,
+ '--output', output_path,
'--pg-conf', utils.R8LIB_KEEP_RULES,
- '--pg-map-output', R8LIB_MAP_FILE))
+ '--pg-map-output', output_map),
+ **kwargs)
def test_d8sample():
