forked from OSchip/llvm-project
32e6a34c02
In r267672, where the loop distribution pragma was introduced, I tried it hard to keep the old behavior for opt: when opt is invoked with -loop-distribute, it should distribute the loop (it's off by default when ran via the optimization pipeline). As MichaelZ has discovered this has the unintended consequence of breaking a very common developer work-flow to reproduce compilations using opt: First you print the pass pipeline of clang with -debug-pass=Arguments and then invoking opt with the returned arguments. clang -debug-pass will include -loop-distribute but the pass is invoked with default=off so nothing happens unless the loop carries the pragma. While through opt (default=on) we will try to distribute all loops. This changes opt's default to off as well to match clang. The tests are modified to explicitly enable the transformation. llvm-svn: 290235 |
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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.