mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-10 02:36:06 +00:00
1d02acb7a0
This trades a (register-renamer-friendly) movaps for a floating point / integer domain cross. That is a very bad trade, even on architectures where domain crossing is relatively fast. On any chip where there is even a cycle stall, this is a Very Bad Idea. It doesn't even seem likely to cause a spill to be introduced because the reason for the copy is to destructively shuffle in place. Thanks to Ben Kramer for fixing a bug in this code that my new shuffle lowering exposed and highlighting that perhaps it should just go away. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219090 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.