https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86538
--- Comment #5 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> --- Author: ramana Date: Tue Apr 30 12:02:30 2019 New Revision: 270689 URL: https://gcc.gnu.org/viewcvs?rev=270689&root=gcc&view=rev Log: [Patch AArch64] Add __ARM_FEATURE_ATOMICS This keeps coming up repeatedly and the ACLE has finally added __ARM_FEATURE_ATOMICS for the LSE feature in GCC. This is now part of the latest ACLE release (https://developer.arm.com/docs/101028/latest/5-feature-test-macros) I know it's late for GCC-9 but this is a simple macro which need not wait for another year. Ok for trunk and to backport to all release branches ? Tested with a simple build and a smoke test. Backport from mainline. PR target/86538 * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Define __ARM_FEATURE_ATOMICS Modified: branches/gcc-9-branch/gcc/ChangeLog branches/gcc-9-branch/gcc/config/aarch64/aarch64-c.c
