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Enable building libomp.so for 32-bit x86. This is done by selectively

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enabling the functions that save and restore MXCSR, since access to this
register requires SSE support.

Note that you may run into other issues with OpenMP on i386, since this
*not* yet supported upstream, and certainly not extensively tested.

PR:		236062, 236582
MFC after:	1 month
X-MFC-With:	r344779
This commit is contained in:
Dimitry Andric 2019-03-18 21:04:28 +00:00
parent 66110c6521
commit eccf47f57a
3 changed files with 7 additions and 4 deletions
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7
contrib/openmp/runtime/src/kmp.h
View File

@ -3666,8 +3666,13 @@ extern int __kmp_read_from_file(char const *path, char const *format, ...);
extern void __kmp_query_cpuid(kmp_cpuinfo_t *p);
#define __kmp_load_mxcsr(p) _mm_setcsr(*(p))
#if __SSE__
static inline void __kmp_load_mxcsr(const kmp_uint32 *p) { _mm_setcsr(*(p)); }
static inline void __kmp_store_mxcsr(kmp_uint32 *p) { *p = _mm_getcsr(); }
#else
static inline void __kmp_load_mxcsr(const kmp_uint32 *) {}
static inline void __kmp_store_mxcsr(kmp_uint32 *) {}
#endif
extern void __kmp_load_x87_fpu_control_word(kmp_int16 *p);
extern void __kmp_store_x87_fpu_control_word(kmp_int16 *p);

2
contrib/openmp/runtime/src/kmp_runtime.cpp
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@ -8104,7 +8104,7 @@ __kmp_determine_reduction_method(
#elif KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_AARCH || KMP_ARCH_MIPS
#if KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_HURD
#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_WINDOWS || KMP_OS_HURD
// basic tuning

2
lib/Makefile
View File

@ -196,9 +196,7 @@ _libproc= libproc
_librtld_db= librtld_db
.endif
.if !defined(COMPAT_32BIT)
SUBDIR.${MK_OPENMP}+= libomp
.endif
SUBDIR.${MK_OPENSSL}+= libmp
SUBDIR.${MK_PMC}+= libpmc libpmcstat
SUBDIR.${MK_RADIUS_SUPPORT}+= libradius