Performance Hotfix for 2.15.1 #261
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The calculatons for signed and unsigned type of lowest rank were expensive when there were a large number of constant expressions in the program. This commit improves performance by: 1. Creating classes to represent the set of integer constant expressions and integer constants in the program. 2. Creating a candidate table of IntegralTypes for each known constant integer value in the program, to avoid duplicate work. 3. Calculating the stlr and utlr for each constant value, not each constant expression.
This improves the performance of Rule 10.5 by computing all the types of the cast first, before determining whether they were invalid. Previously the join orderer found the essential type category of the "from" type, then joined that will invalid type categories, then joined that with all expressions of that type before filtering down to the cast.
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🤖 Beep Boop! Matrix Testing for this PR has been initiated. Please check back later for results. |
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🤖 Beep Boop! gcc/cpp/X86_64 Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! clang/cpp/X86_64 Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! qcc/cpp/AARCH64LE Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! gcc/c/X86_64 Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! clang/c/X86_64 Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! Matrix Testing for this PR has been initiated. Please check back later for results. |
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🤖 Beep Boop! qcc/c/AARCH64LE Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! Matrix Testing for this PR has been completed. If no reports were posted it means this PR does not contain things that need matrix testing! |
lcartey
approved these changes
Mar 17, 2023
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/test-performance |
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🏁 Beep Boop! Performance testing for this PR has been initiated. Please check back later for results. Note that the query package generation step must complete before testing will start so it might be a minute. |
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🤖 Beep Boop! clang/cpp/X86_64 Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! clang/c/X86_64 Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! gcc/c/X86_64 Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! gcc/cpp/X86_64 Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! qcc/cpp/AARCH64LE Matrix Testing for this PR has been completed but I didn't find anything to test! |
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🤖 Beep Boop! qcc/c/AARCH64LE Matrix Testing for this PR has been completed. See below for the results! |
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🤖 Beep Boop! Matrix Testing for this PR has been completed. If no reports were posted it means this PR does not contain things that need matrix testing! |
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🏁 Beep Boop! Performance testing complete! See below for performance of the last 3 runs vs your PR. Times are based on predicate performance. You can find full graphs and stats in the PR that was created for this test in the release engineering repo. 🏁 Below are the slowest predicates for the last 2 releases vs this PR. |
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Description
Performance Hotfix for 2.15.1.
Change request type
.ql,.qll,.qlsor unit tests)Rules with added or modified queries
Release change checklist
A change note (development_handbook.md#change-notes) is required for any pull request which modifies:
If you are only adding new rule queries, a change note is not required.
Author: Is a change note required?
🚨🚨🚨
Reviewer: Confirm that format of shared queries (not the .qll file, the
.ql file that imports it) is valid by running them within VS Code.
Reviewer: Confirm that either a change note is not required or the change note is required and has been added.
Query development review checklist
For PRs that add new queries or modify existing queries, the following checklist should be completed by both the author and reviewer:
Author
As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.
Reviewer
As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.