forked from OSchip/llvm-project
d6f7a65197
Summary: In `ClassID`, make sure we use an unsigned as based for the `lbits` shift. The previous code resulted in spurious sign extensions like for x64: ``` add esi, 0FFFFFFFFh movsxd rcx, esi and rcx, r15 ``` The code with the `U` added is: ``` add esi, 0FFFFFFFFh and rsi, r15 ``` And for `MaxCachedHint`, use a 32-bit division instead of `64-bit`, which is faster (https://lemire.me/blog/2017/11/16/fast-exact-integer-divisions-using-floating-point-operations/) and already used in other parts of the code (64-bit `GetChunkIdx`, 32-bit `GetMetaData` enforce 32-bit divisions) Not major performance gains by any mean, but they don't hurt. Reviewers: alekseyshl Reviewed By: alekseyshl Subscribers: kubamracek, delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D42916 llvm-svn: 324263 |
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| cmake | ||
| docs | ||
| include | ||
| lib | ||
| test | ||
| unittests | ||
| www | ||
| .arcconfig | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| README.txt | ||
README.txt
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================