mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-14 00:32:55 +00:00
d07494f102
This is already done for shifts. Allow it for rotations as well. E.g.: (rotl:i32 x, (trunc (and y, 31))) -> (rotl:i32 x, (and (trunc y), 31)) Use the newly factored-out distributeTruncateThroughAnd. With this patch and some X86.td tweaks we should be able to remove redundant masking of the rotation amount like in the example above. HW implicitly performs this masking. The testcase will be added as part of the X86 patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203316 91177308-0d34-0410-b5e6-96231b3b80d8
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, 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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.