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| author | Noah Misch <noah@leadboat.com> | 2015-07-08 20:44:21 -0400 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2015-07-08 20:44:21 -0400 |
| commit | 1e700e0fa02b3fd8990d4eaa8bd51b9352cc9736 (patch) | |
| tree | 4995a5b0fa2565a2cc900612291740dc822cbc4f /src | |
| parent | 0d32d2e693ed69b3080be91f734c547f703b49ad (diff) | |
| download | postgresql-1e700e0fa02b3fd8990d4eaa8bd51b9352cc9736.tar.gz postgresql-1e700e0fa02b3fd8990d4eaa8bd51b9352cc9736.zip | |
Given a gcc-compatible xlc compiler, prefer xlc-style atomics.
This evades a ppc64le "IBM XL C/C++ for Linux" compiler bug. Back-patch
to 9.5, where the atomics facility was introduced.
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/port/atomics.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/include/port/atomics.h b/src/include/port/atomics.h index 1a4c748cb97..97a00641119 100644 --- a/src/include/port/atomics.h +++ b/src/include/port/atomics.h @@ -81,8 +81,15 @@ * * pg_atomic_compare_exchange_u32(), pg_atomic_fetch_add_u32() * using compiler intrinsics are a good idea. */ +/* + * Given a gcc-compatible xlc compiler, prefer the xlc implementation. The + * ppc64le "IBM XL C/C++ for Linux, V13.1.2" implements both interfaces, but + * __sync_lock_test_and_set() of one-byte types elicits SIGSEGV. + */ +#if defined(__IBMC__) || defined(__IBMCPP__) +#include "port/atomics/generic-xlc.h" /* gcc or compatible, including clang and icc */ -#if defined(__GNUC__) || defined(__INTEL_COMPILER) +#elif defined(__GNUC__) || defined(__INTEL_COMPILER) #include "port/atomics/generic-gcc.h" #elif defined(WIN32_ONLY_COMPILER) #include "port/atomics/generic-msvc.h" @@ -90,8 +97,6 @@ #include "port/atomics/generic-acc.h" #elif defined(__SUNPRO_C) && !defined(__GNUC__) #include "port/atomics/generic-sunpro.h" -#elif (defined(__IBMC__) || defined(__IBMCPP__)) && !defined(__GNUC__) -#include "port/atomics/generic-xlc.h" #else /* * Unsupported compiler, we'll likely use slower fallbacks... At least |