forked from OSchip/llvm-project
8ffdabdb61
Summary: Copying all of the saved register state on every entry to parseInstruction is a severe performance contraint, especially because most of this saved state is never used. On x86 linux this is about 560 bytes, and will be more on other platforms. When performance testing libunwind, this memcpy appears at the top of nearly all our tests. By only saving this state as needed, we see increasing in performance of around 2.5% for the ctak test here. https://github.com/clasp-developers/ctak Certain internal extremely exception-heavy tasks run in about 2/3 the time. Note that by stashing the new boolean inside what had been padding in the original structure, this uses no additional memory. Subscribers: fedor.sergeev, libcxx-commits Tags: #libc Differential Revision: https://reviews.llvm.org/D75692 |
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| .clang-format | ||
| CMakeLists.txt | ||
| LICENSE.TXT | ||