This repo holds a collection of utilities used by RyuJIT developers to automate tasks when working on CoreCLR. Initial utilities are around producing diffs of codegen changes.
Copy down the appropraite bootstrap.{cmd|sh} for your platform and run it. The script
will enlist in the jitutils project and perform the basics listed in the details section
following.
To prepare the tools for use, from the root of the cloned jitutils repo, do the following:
- Download required package dependencies:
dotnet restore- NOTE: On Mac, you need to first use
ulimit -n 2048or thedotnet restorewill fail.
- NOTE: On Mac, you need to first use
- Build and publish the tools:
build.{cmd|sh} -f -p
This will create the following directories in the repo root:
bin- contains one directory for each built tool.fx- contains a set of frameworks assemblies that can be used for asm diffs.
Add each tool subdirectory to your path so you can easily invoke them, e.g.:
set jitutils=<path to root of jitutils clone>
set PATH=%PATH%;%jitutils%\bin\jit-dasm;%jitutils%\bin\jit-diff;%jitutils%\bin\jit-analyze
For a more complete introduction look at the getting started guide.
This is a general tool to produce diffs for compiled MSIL assemblies. The tool relies on a base and diff crossgen.exe as inputs, either by using a prebuilt base from the CI builds and a local experimental build, or building both a base and diff locally.
Sample help commandline:
$ jit-dasm --help
usage: jit-dasm [-b <arg>] [-d <arg>] [-o <arg>] [-t <arg>] [-f <arg>]
[--gcinfo] [-v] [-r] [-p <arg>...] [--] <assembly>...
-b, --base <arg> The base compiler exe.
-d, --diff <arg> The diff compiler exe.
-o, --output <arg> The output path.
-t, --tag <arg> Name of root in output directory. Allows
for many sets of output.
-f, --file <arg> Name of file to take list of assemblies
from. Both a file and assembly list can
be used.
--gcinfo Add GC info to the disasm output.
-v, --verbose Enable verbose output.
-r, --recursive Scan directories recursively.
-p, --platform <arg>... Path to platform assemblies
<assembly>... The list of assemblies or directories to
scan for assemblies.
jit-diff is a tool specifically targeting CoreCLR. It has a prebaked list of interesting assemblies to use for generating assembly diffs and understands enough of the structure to make it more streamlined. jit-diff uses jit-dasm under the covers to produce the diffs so for other projects a new utility could be produced that works in a similar way.
Sample help commandlines:
$ jit-diff --help
usage: jit-diff <command> [<args>]
diff Run asm diff of base/diff.
list List defaults and available tools asmdiff.json.
install Install tool in config.
$ jit-diff diff --help
usage: jit-diff diff [-b <arg>] [-d <arg>] [-o <arg>] [-a] [-t <arg>]
[-m] [-f] [-v] [--core_root <arg>] [--test_root <arg>]
-b, --base <arg> The base compiler exe or tag.
-d, --diff <arg> The diff compiler exe or tag.
-o, --output <arg> The output path.
-a, --analyze Analyze resulting base, diff dasm
directories.
-t, --tag <arg> Name of root in output directory. Allows
for many sets of output.
-c, --corlibonly Disasm *corlib only
-f, --frameworksonly Disasm frameworks only
-v, --verbose Enable verbose output
--core_root <arg> Path to test CORE_ROOT.
--test_root <arg> Path to test tree.
The jit-analyze tool understand the format of the *.dasm files in a diff and can extract this data to produce a summary and/or dump the info to a unified data file (CSV, JSON) The common usage of the tool is to extract interesting diffs, if any, from a diff run as part of the development progresses.
Sample help commandline:
$ jit-analyze --help
usage: jit-analyze [-b <arg>] [-d <arg>] [-r] [-c <arg>] [-w]
[--reconcile] [--json <arg>] [--tsv <arg>]
-b, --base <arg> Base file or directory.
-d, --diff <arg> Diff file or directory.
-r, --recursive Search directories recursively.
-c, --count <arg> Count of files and methods (at most) to output
in the summary. (count) improvements and
(count) regressions of each will be included.
(default 5)
-w, --warn Generate warning output for files/methods that
only exists in one dataset or the other (only
in base or only in diff).
--reconcile If there are methods that exist only in base or
diff, create zero-sized counterparts in diff,
and vice-versa. Update size deltas accordingly.
--json <arg> Dump analysis data to specified file in JSON
format.
--tsv <arg> Dump analysis data to specified file in
tab-separated format.
This is a skeleton project that exists to pull down a predictable set of framework
assemblies and publish them in the root in the subdirectory './fx'. Today this is
set to the RC2 version of the NetCoreApp1.0 frameworks. When this package is installed
via the build.{cmd|sh} script this set can be used on any supported platform for
diffing. Note: The RC2 mscorlib.dll is removed, as this assembly should be updated from
the selected base runtime that is under test for consistency. To add particular packages
to the set you diff, add their dependencies to the project.json in this project and
they will be pulled in and published in the standalone directory './fx'.