commit | a61f9fe31750cee65c726fb51f1b14e31e177258 | [log] [tgz] |
---|---|---|
author | Antonio Frighetto <me@antoniofrighetto.com> | Mon Apr 08 08:57:38 2024 +0200 |
committer | Antonio Frighetto <me@antoniofrighetto.com> | Wed Apr 24 16:55:33 2024 +0200 |
tree | a9dc91543def6a52c357ebe6ae500acce7578b47 | |
parent | c1d00510ab5e7f5052efb1e678173e3a97302e61 [diff] |
[Inline][Cloning] Defer simplification after phi-nodes resolution A logic issue arose when inlining via `CloneAndPruneFunctionInto`, which, besides cloning, performs instruction simplification as well. By the time a new cloned instruction is being simplified, phi-nodes are not remapped yet as the whole CFG needs to be processed first. As `VMap` state at this stage is incomplete, `threadCmpOverPHI` and variants could lead to unsound optimizations. This issue has been addressed by performing basic constant folding while cloning, and postponing instruction simplification once phi-nodes are revisited. Fixes: https://github.com/llvm/llvm-project/issues/87534.
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.
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.
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.