[AMDGPU] Avoid bundling a SCHED_BARRIER with memops (#153533) Avoid bundling a SCHED_BARRIER with memops. Memops are still can be bundled and a SCHED_BARRIER ends the bundle. (e.g. [load, load, ... SCHED_BARRIER(exclusive from the bundle) ), This is to honor the SCHED_BARRIERs maximally without intervention of bundling. If a SCHED_BARRIER is placed in a bundle between memops, the SCHED_BARRIER is not used during IGroupLPMutation in postra mi-sched phase. In addition, bundling memory ops with in-between SCHED_BARRIER can prevent that SCHED_BARRIER or any neighboring SCHED_BARRIER being honored. As users already provided SCHED_BARRIER between memory ops, don't bundle it together with memory ops. Bypassing any bundling in a MBB with a SCHED_BARRIER removes all those problems occur.
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.