[PATCH] D72184: [BPF] support atomic instructions

[Alexei Starovoitov via Phabricator via cfe-commits]

ast added inline comments.


================
Comment at: llvm/test/CodeGen/BPF/atomics_2.ll:14
+;   int test_xchg_64(long *p, long v) {
+;     return __sync_lock_test_and_set(p, v);
+;   }
----------------
test_and_set is not the same as xchg.
xchg doesn't do comparison.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72184/new/

https://reviews.llvm.org/D72184