61480755ee
Allow multiple -p/-perfdata args (comma-separated and repeated). Process them in parallel with `--perfdata-jobs/-pj` (default 4, 0 for all available hardware threads). Keep YAML/DataReader inputs single-profile only. This also enables density computation with multiple perf files. Prior to that, it was impossible to compute total density as it wasn't computed from symbolized profiles. Depends on #199323 #199322 #199321 #199320 Test Plan: Updated pre-aggregated-perf.test and perf_test For a large binary (300MB text) and 7 ETM perf data files (6GB each), compared to parallel perf2bolt + merge-fdata: * processing time is equal: 670+3s -> 669s (within noise), * output is equivalent: sorted fdata is equal. Reviewers: paschalis-mpeis, rafaelauler, yozhu, ayermolo, yavtuk, maksfb, yota9 Reviewed By: paschalis-mpeis, rafaelauler Pull Request: https://github.com/llvm/llvm-project/pull/199324 |
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| SECURITY.md | ||
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.