mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-04-06 09:44:39 +00:00
544d686bc0
During statepoint lowering we can sometimes avoid spilling of the value if we know that it was already spilled for previous statepoint. We were doing this by checking if incoming statepoint value was lowered into load from stack slot. This was working only in boundaries of one basic block. But instead of looking at the lowered node we can look directly at the llvm-ir value and if it was gc.relocate (or some simple modification of it) look up stack slot for it's derived pointer and reuse stack slot from it. This allows us to look across basic block boundaries. Differential Revision: http://reviews.llvm.org/D10251 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239472 91177308-0d34-0410-b5e6-96231b3b80d8
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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.