git.postgresql.org Git - postgresql.git/commitdiff

Thu, 9 Jul 2015 00:44:21 +0000 (20:44 -0400)

Thu, 9 Jul 2015 00:44:21 +0000 (20:44 -0400)

This evades a ppc64le "IBM XL C/C++ for Linux" compiler bug. Back-patch
to 9.5, where the atomics facility was introduced.

index 1a4c748cb97172e4a35220e6efd44767e6127d51..97a00641119d0e277ab9a84d514daee82f5e54ac 100644 (file)

* * 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"

#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

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