bc10a41080
Use add_with_carry builtin to improve the performance of addition and multiplication of UInt class. For 128-bit, it is as fast as using __uint128_t. Microbenchmark for addition: https://quick-bench.com/q/-5a6xM4T8rIXBhqMTtLE-DD2h8w Microbenchmark for multiplication: https://quick-bench.com/q/P2muLAzJ_W-VqWCuxEJ0CU0bLDg Microbenchmark for shift right: https://quick-bench.com/q/N-jkKXaVsGQ4AAv3k8VpsVkua5Y Microbenchmark for shift left: https://quick-bench.com/q/5-RzwF8UdslC-zuhNajXtXdzLRM Reviewed By: sivachandra Differential Revision: https://reviews.llvm.org/D137871
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.