f2d6bcd767
Before:
Tuple counts for UnsignedDifferenceExpressionComparedZero::isGuarded#bff/3@ec24001m after 1.7s:
97431 ~0% {2} r1 = JOIN UnsignedDifferenceExpressionComparedZero::isGuarded#bff#join_rhs WITH project#BasicBlocks::Cached::basic_block_member ON FIRST 1 OUTPUT Rhs.1, Lhs.0 'sub'
11809769 ~1% {2} r2 = JOIN r1 WITH Guards::GuardCondition::controls_dispred#fff_10#join_rhs ON FIRST 1 OUTPUT Lhs.1 'sub', Rhs.1
11809769 ~0% {4} r3 = JOIN r2 WITH project#BasicBlocks::Cached::basic_block_member ON FIRST 1 OUTPUT Lhs.1, Rhs.1, false, Lhs.0 'sub'
629277 ~4% {7} r4 = JOIN r3 WITH Guards::GuardCondition::ensuresLt_dispred#ffffff_045123#join_rhs ON FIRST 3 OUTPUT Lhs.3 'sub', Lhs.0, Lhs.1, false, Rhs.3 'left', Rhs.4 'right', Rhs.5
628120 ~4% {7} r5 = SELECT r4 ON In.6 >= 0
628120 ~1% {3} r6 = SCAN r5 OUTPUT In.0 'sub', In.4 'left', In.5 'right'
return r6
After:
Tuple counts for UnsignedDifferenceExpressionComparedZero::isGuarded#fff/3@i2#a5071x3a after 392ms:
103763 ~0% {2} r1 = SCAN UnsignedDifferenceExpressionComparedZero::exprIsSubLeftOrLess#ff#prev_delta OUTPUT In.0 'sub', 26
103763 ~0% {1} r2 = JOIN r1 WITH exprs ON FIRST 2 OUTPUT Lhs.0 'sub'
97431 ~0% {3} r3 = JOIN r2 WITH project#BasicBlocks::Cached::basic_block_member ON FIRST 1 OUTPUT Rhs.1, false, Lhs.0 'sub'
629277 ~0% {7} r4 = JOIN r3 WITH Guards::GuardCondition::ensuresLt_dispred#ffffff_450123#join_rhs ON FIRST 2 OUTPUT Lhs.2 'sub', Lhs.0, false, Rhs.2, Rhs.3 'left', Rhs.4 'right', Rhs.5
628120 ~0% {7} r5 = SELECT r4 ON In.6 >= 0
628120 ~1% {6} r6 = SCAN r5 OUTPUT In.0 'sub', In.1, In.3, In.4 'left', In.5 'right', In.6
628120 ~1% {6} r7 = r6 AND NOT UnsignedDifferenceExpressionComparedZero::isGuarded#fff#prev(Lhs.0 'sub', Lhs.3 'left', Lhs.4 'right')
628120 ~0% {5} r8 = SCAN r7 OUTPUT In.2, In.1, In.0 'sub', In.3 'left', In.4 'right'
628120 ~1% {3} r9 = JOIN r8 WITH Guards::GuardCondition::controls_dispred#fff ON FIRST 2 OUTPUT Lhs.2 'sub', Lhs.3 'left', Lhs.4 'right'
return r9
CodeQL
This open source repository contains the standard CodeQL libraries and queries that power LGTM and the other CodeQL products that GitHub makes available to its customers worldwide. For the queries, libraries, and extractor that power Go analysis, visit the CodeQL for Go repository.
How do I learn CodeQL and run queries?
There is extensive documentation on getting started with writing CodeQL. You can use the interactive query console on LGTM.com or the CodeQL for Visual Studio Code extension to try out your queries on any open source project that's currently being analyzed.
Contributing
We welcome contributions to our standard library and standard checks. Do you have an idea for a new check, or how to improve an existing query? Then please go ahead and open a pull request! Before you do, though, please take the time to read our contributing guidelines. You can also consult our style guides to learn how to format your code for consistency and clarity, how to write query metadata, and how to write query help documentation for your query.
License
The code in this repository is licensed under the MIT License by GitHub.
Visual Studio Code integration
If you use Visual Studio Code to work in this repository, there are a few integration features to make development easier.
CodeQL for Visual Studio Code
You can install the CodeQL for Visual Studio Code extension to get syntax highlighting, IntelliSense, and code navigation for the QL language, as well as unit test support for testing CodeQL libraries and queries.
Tasks
The .vscode/tasks.json file defines custom tasks specific to working in this repository. To invoke one of these tasks, select the Terminal | Run Task... menu option, and then select the desired task from the dropdown. You can also invoke the Tasks: Run Task command from the command palette.