forked from OSchip/llvm-project
ad8b7c1190
Summary: Lower control flow did not correctly handle the case that a loop break in if/else was on a condition that was not guaranteed to be masked by exec. The first test kernel shows an example of this going wrong; after exiting the loop, exec is all ones, even if it was not before the loop. The fix is for lowering of if-break and else-break to insert an S_AND_B64 to mask the break condition with exec. This commit also includes the optimization of not inserting that S_AND_B64 if it is obviously not needed because the break condition is the result of a V_CMP in the same basic block. V2: Addressed some review comments. V3: Test fixes. Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, dstuttard, t-tye, llvm-commits Differential Revision: https://reviews.llvm.org/D44046 Change-Id: I0fc56a01209a9e99d1d5c9b0ffd16f111caf200c llvm-svn: 333258 |
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| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| projects | ||
| resources | ||
| runtimes | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitattributes | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| LLVMBuild.txt | ||
| README.txt | ||
| RELEASE_TESTERS.TXT | ||
| configure | ||
| llvm.spec.in | ||
README.txt
Low Level Virtual Machine (LLVM) ================================ 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.