forked from OSchip/llvm-project
1bf4bbc492
If we promote the ABS and then Expand in LegalizeDAG, then both the sra and the xor will have their inputs sign extended. This generates extra code on RISCV which lacks an i8 or i16 sign extend instructon. If we expand during type legalization, then only the sra will get its input sign extended. RISCV is able to combine this with the sra by doing a shift left followed by an sra. Reviewed By: RKSimon Differential Revision: https://reviews.llvm.org/D121664 |
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| llvm.spec.in | ||
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.