5b648df1a8
Summary: RPTracker::reset(MI) is a very expensive call when the number of virtual registers is huge. We observed a long compilation time issue when RPT::reset() is called once for each cluster. In this work, we call RPT.reset() only at the first seen cluster, and use advance() to get the register pressure for the later clusters in the same basic block. This could effectively reduce the number of the expensive calls and thus reduce the compile time. Reviewers: rampitec Fixes: SWDEV-239161 Differential Revision: https://reviews.llvm.org/D95273 |
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README.txt
The LLVM Compiler Infrastructure ================================ This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.