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| author | Noah Misch | 2020-10-12 04:31:37 +0000 |
|---|---|---|
| committer | Noah Misch | 2020-10-12 04:31:37 +0000 |
| commit | f5c1167b173d6e7a5d4c938fe716f0d29ae7228d (patch) | |
| tree | 377ddd8d4a6af5912322d0fa7562af50889faf91 | |
| parent | 80f8eb79e24d9b7963eaf17ce846667e2c6b6e6f (diff) | |
For ppc gcc, implement 64-bit compare_exchange and fetch_add with asm.
While xlc defines __64BIT__, gcc does not. Due to this oversight in
commit 30ee5d17c20dbb282a9952b3048d6ad52d56c371, gcc builds continued
implementing 64-bit atomics by way of intrinsics. Back-patch to v13,
where that commit first appeared.
Reviewed by Tom Lane.
Discussion: https://postgr.es/m/[email protected]
| -rw-r--r-- | src/include/port/atomics/arch-ppc.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/port/atomics/arch-ppc.h b/src/include/port/atomics/arch-ppc.h index fdfe0d0cd5f..68e66033ad7 100644 --- a/src/include/port/atomics/arch-ppc.h +++ b/src/include/port/atomics/arch-ppc.h @@ -32,14 +32,14 @@ typedef struct pg_atomic_uint32 } pg_atomic_uint32; /* 64bit atomics are only supported in 64bit mode */ -#ifdef __64BIT__ +#if SIZEOF_VOID_P >= 8 #define PG_HAVE_ATOMIC_U64_SUPPORT typedef struct pg_atomic_uint64 { volatile uint64 value pg_attribute_aligned(8); } pg_atomic_uint64; -#endif /* __64BIT__ */ +#endif /* * This mimics gcc __atomic_compare_exchange_n(..., __ATOMIC_SEQ_CST), but |