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| author | Ben Gamari <ben@smart-cactus.org> | 2021-09-30 12:46:10 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-10-04 23:45:46 -0400 |
| commit | 347537a5999622def42da47572ca49580c53f29c (patch) | |
| tree | d7fde7d62c1c7764b6f785edacbcd84647619204 | |
| parent | 40c81dd297dcfb8259f35372d2367b00e3661603 (diff) | |
| download | haskell-347537a5999622def42da47572ca49580c53f29c.tar.gz | |
compiler: Improve Haddocks of atomic MachOps
| -rw-r--r-- | compiler/GHC/Cmm/MachOp.hs | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/compiler/GHC/Cmm/MachOp.hs b/compiler/GHC/Cmm/MachOp.hs index b5aa278ad7..7004fece51 100644 --- a/compiler/GHC/Cmm/MachOp.hs +++ b/compiler/GHC/Cmm/MachOp.hs @@ -669,9 +669,11 @@ data CallishMachOp | MO_AtomicRMW Width AtomicMachOp | MO_AtomicRead Width | MO_AtomicWrite Width + -- | Atomic compare-and-swap. Arguments are @[dest, expected, new]@. + -- Sequentially consistent. + -- Possible future refactoring: should this be an'MO_AtomicRMW' variant? | MO_Cmpxchg Width - -- Should be an AtomicRMW variant eventually. - -- Sequential consistent. + -- | Atomic swap. Arguments are @[dest, new]@ | MO_Xchg Width -- These rts provided functions are special: suspendThread releases the |