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Mirror of https://github.com/RPCS3/llvm-mirror
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Fixes an infinite loop encountered in GVN. GVN will delay PRE if it encounters critical edges, attempt to split them later via calls to SplitCriticalEdge(), then restart. The caller of GVN::splitCriticalEdges() assumed a return value of true meant that critical edges were split, that the IR had changed, and that PRE should be re-attempted, upon which we loop infinitely. This was exposed after D88438, by compiling the Linux kernel for s390, but the test case is reproducible on x86. Fixes: https://github.com/ClangBuiltLinux/linux/issues/1261 Reviewed By: void Differential Revision: https://reviews.llvm.org/D94996 |
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| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| projects | ||
| resources | ||
| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitattributes | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| configure | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| llvm.spec.in | ||
| README.txt | ||
| RELEASE_TESTERS.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.