On Wed, Aug 12, 2015 at 11:12:29AM +0100, Matthew Wahab wrote: > ARMv8.1 adds instructions for atomic compare-and-swap with optional > memory ordering specifiers. This patch series adds the instructions to > GCC, making them available with -march=armv8.1-a or with > -march=armv8-a+lse, and using them to implement the __sync and __atomic > builtins. > > This patch adds an internal TARGET_LSE macro, to check target support > for the atomic instructions. > > Subsequent patches > - add and use atomic compare-and-swap instructions; > - add tests for the compare-and-swap; > > Tested the series for aarch64-none-linux-gnu with native bootstrap and make > check and for aarch64-none-elf with cross-compiled check-gcc. Also tested > aarch64-none-elf with cross-compiled check-gcc on an emulator that supports > ARMv8.1. > > Ok for trunk? > Matthew
OK. Thanks, James > > 2015-08-12 Matthew Wahab <matthew.wa...@arm.com> > > * config/aarch64/aarch64.h (AARCH64_ISA_LSE): New. > (TARGET_LSE): New.
