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gcc/libatomic/auto-config.h.in
Torvald Riegel 969a32ce93 Fix __atomic to not implement atomic loads with CAS. 
gcc/
	* builtins.c (fold_builtin_atomic_always_lock_free): Make "lock-free"
	conditional on existance of a fast atomic load.
	* optabs-query.c (can_atomic_load_p): New function.
	* optabs-query.h (can_atomic_load_p): Declare it.
	* optabs.c (expand_atomic_exchange): Always delegate to libatomic if
	no fast atomic load is available for the particular size of access.
	(expand_atomic_compare_and_swap): Likewise.
	(expand_atomic_load): Likewise.
	(expand_atomic_store): Likewise.
	(expand_atomic_fetch_op): Likewise.
	* testsuite/lib/target-supports.exp
	(check_effective_target_sync_int_128): Remove x86 because it provides
	no fast atomic load.
	(check_effective_target_sync_int_128_runtime): Likewise.

libatomic/
	* acinclude.m4: Add #define FAST_ATOMIC_LDST_*.
	* auto-config.h.in: Regenerate.
	* config/x86/host-config.h (FAST_ATOMIC_LDST_16): Define to 0.
	(atomic_compare_exchange_n): New.
	* glfree.c (EXACT, LARGER): Change condition and add comments.

From-SVN: r245098
2017-02-01 17:21:59 +00:00

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/* auto-config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
#undef AC_APPLE_UNIVERSAL_BUILD
/* Have __atomic_compare_exchange for 1 byte integers. */
#undef HAVE_ATOMIC_CAS_1
/* Have __atomic_compare_exchange for 16 byte integers. */
#undef HAVE_ATOMIC_CAS_16
/* Have __atomic_compare_exchange for 2 byte integers. */
#undef HAVE_ATOMIC_CAS_2
/* Have __atomic_compare_exchange for 4 byte integers. */
#undef HAVE_ATOMIC_CAS_4
/* Have __atomic_compare_exchange for 8 byte integers. */
#undef HAVE_ATOMIC_CAS_8
/* Have __atomic_exchange for 1 byte integers. */
#undef HAVE_ATOMIC_EXCHANGE_1
/* Have __atomic_exchange for 16 byte integers. */
#undef HAVE_ATOMIC_EXCHANGE_16
/* Have __atomic_exchange for 2 byte integers. */
#undef HAVE_ATOMIC_EXCHANGE_2
/* Have __atomic_exchange for 4 byte integers. */
#undef HAVE_ATOMIC_EXCHANGE_4
/* Have __atomic_exchange for 8 byte integers. */
#undef HAVE_ATOMIC_EXCHANGE_8
/* Have __atomic_fetch_add for 1 byte integers. */
#undef HAVE_ATOMIC_FETCH_ADD_1
/* Have __atomic_fetch_add for 16 byte integers. */
#undef HAVE_ATOMIC_FETCH_ADD_16
/* Have __atomic_fetch_add for 2 byte integers. */
#undef HAVE_ATOMIC_FETCH_ADD_2
/* Have __atomic_fetch_add for 4 byte integers. */
#undef HAVE_ATOMIC_FETCH_ADD_4
/* Have __atomic_fetch_add for 8 byte integers. */
#undef HAVE_ATOMIC_FETCH_ADD_8
/* Have __atomic_fetch_op for all op for 1 byte integers. */
#undef HAVE_ATOMIC_FETCH_OP_1
/* Have __atomic_fetch_op for all op for 16 byte integers. */
#undef HAVE_ATOMIC_FETCH_OP_16
/* Have __atomic_fetch_op for all op for 2 byte integers. */
#undef HAVE_ATOMIC_FETCH_OP_2
/* Have __atomic_fetch_op for all op for 4 byte integers. */
#undef HAVE_ATOMIC_FETCH_OP_4
/* Have __atomic_fetch_op for all op for 8 byte integers. */
#undef HAVE_ATOMIC_FETCH_OP_8
/* Have __atomic_load/store for 1 byte integers. */
#undef HAVE_ATOMIC_LDST_1
/* Have __atomic_load/store for 16 byte integers. */
#undef HAVE_ATOMIC_LDST_16
/* Have __atomic_load/store for 2 byte integers. */
#undef HAVE_ATOMIC_LDST_2
/* Have __atomic_load/store for 4 byte integers. */
#undef HAVE_ATOMIC_LDST_4
/* Have __atomic_load/store for 8 byte integers. */
#undef HAVE_ATOMIC_LDST_8
/* Have __atomic_test_and_set for 1 byte integers. */
#undef HAVE_ATOMIC_TAS_1
/* Have __atomic_test_and_set for 16 byte integers. */
#undef HAVE_ATOMIC_TAS_16
/* Have __atomic_test_and_set for 2 byte integers. */
#undef HAVE_ATOMIC_TAS_2
/* Have __atomic_test_and_set for 4 byte integers. */
#undef HAVE_ATOMIC_TAS_4
/* Have __atomic_test_and_set for 8 byte integers. */
#undef HAVE_ATOMIC_TAS_8
/* Define to 1 if the target supports __attribute__((alias(...))). */
#undef HAVE_ATTRIBUTE_ALIAS
/* Define to 1 if the target supports __attribute__((dllexport)). */
#undef HAVE_ATTRIBUTE_DLLEXPORT
/* Define to 1 if the target supports __attribute__((visibility(...))). */
#undef HAVE_ATTRIBUTE_VISIBILITY
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the <fenv.h> header file. */
#undef HAVE_FENV_H
/* Define to 1 if the target supports __attribute__((ifunc(...))). */
#undef HAVE_IFUNC
/* Have support for 1 byte integers. */
#undef HAVE_INT1
/* Have support for 16 byte integers. */
#undef HAVE_INT16
/* Have support for 2 byte integers. */
#undef HAVE_INT2
/* Have support for 4 byte integers. */
#undef HAVE_INT4
/* Have support for 8 byte integers. */
#undef HAVE_INT8
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to 1 if GNU symbol versioning is used for libatomic. */
#undef LIBAT_GNU_SYMBOL_VERSIONING
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#undef LT_OBJDIR
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* The size of `char', as computed by sizeof. */
#undef SIZEOF_CHAR
/* The size of `int', as computed by sizeof. */
#undef SIZEOF_INT
/* The size of `long', as computed by sizeof. */
#undef SIZEOF_LONG
/* The size of `short', as computed by sizeof. */
#undef SIZEOF_SHORT
/* The size of `void *', as computed by sizeof. */
#undef SIZEOF_VOID_P
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define if you can safely include both <string.h> and <strings.h>. */
#undef STRING_WITH_STRINGS
/* Version number of package */
#undef VERSION
/* The word size in bytes of the machine. */
#undef WORDSIZE
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
# undef WORDS_BIGENDIAN
# endif
#endif
#define MAYBE_HAVE_ATOMIC_LDST_1 HAVE_ATOMIC_LDST_1
#define FAST_ATOMIC_LDST_16 HAVE_ATOMIC_LDST_16
#define MAYBE_HAVE_ATOMIC_TAS_1 HAVE_ATOMIC_TAS_1
#define MAYBE_HAVE_ATOMIC_TAS_2 HAVE_ATOMIC_TAS_2
#define MAYBE_HAVE_ATOMIC_TAS_4 HAVE_ATOMIC_TAS_4
#define MAYBE_HAVE_ATOMIC_TAS_8 HAVE_ATOMIC_TAS_8
#define MAYBE_HAVE_ATOMIC_TAS_16 HAVE_ATOMIC_TAS_16
#define MAYBE_HAVE_ATOMIC_EXCHANGE_1 HAVE_ATOMIC_EXCHANGE_1
#define MAYBE_HAVE_ATOMIC_EXCHANGE_2 HAVE_ATOMIC_EXCHANGE_2
#define MAYBE_HAVE_ATOMIC_EXCHANGE_4 HAVE_ATOMIC_EXCHANGE_4
#define MAYBE_HAVE_ATOMIC_EXCHANGE_8 HAVE_ATOMIC_EXCHANGE_8
#define FAST_ATOMIC_LDST_1 HAVE_ATOMIC_LDST_1
#define MAYBE_HAVE_ATOMIC_EXCHANGE_16 HAVE_ATOMIC_EXCHANGE_16
#define MAYBE_HAVE_ATOMIC_CAS_1 HAVE_ATOMIC_CAS_1
#define MAYBE_HAVE_ATOMIC_CAS_2 HAVE_ATOMIC_CAS_2
#define MAYBE_HAVE_ATOMIC_CAS_4 HAVE_ATOMIC_CAS_4
#define MAYBE_HAVE_ATOMIC_CAS_8 HAVE_ATOMIC_CAS_8
#define MAYBE_HAVE_ATOMIC_CAS_16 HAVE_ATOMIC_CAS_16
#define MAYBE_HAVE_ATOMIC_FETCH_ADD_1 HAVE_ATOMIC_FETCH_ADD_1
#define MAYBE_HAVE_ATOMIC_FETCH_ADD_2 HAVE_ATOMIC_FETCH_ADD_2
#define MAYBE_HAVE_ATOMIC_FETCH_ADD_4 HAVE_ATOMIC_FETCH_ADD_4
#define MAYBE_HAVE_ATOMIC_FETCH_ADD_8 HAVE_ATOMIC_FETCH_ADD_8
#define MAYBE_HAVE_ATOMIC_LDST_2 HAVE_ATOMIC_LDST_2
#define MAYBE_HAVE_ATOMIC_FETCH_ADD_16 HAVE_ATOMIC_FETCH_ADD_16
#define MAYBE_HAVE_ATOMIC_FETCH_OP_1 HAVE_ATOMIC_FETCH_OP_1
#define MAYBE_HAVE_ATOMIC_FETCH_OP_2 HAVE_ATOMIC_FETCH_OP_2
#define MAYBE_HAVE_ATOMIC_FETCH_OP_4 HAVE_ATOMIC_FETCH_OP_4
#define MAYBE_HAVE_ATOMIC_FETCH_OP_8 HAVE_ATOMIC_FETCH_OP_8
#define MAYBE_HAVE_ATOMIC_FETCH_OP_16 HAVE_ATOMIC_FETCH_OP_16
#ifndef WORDS_BIGENDIAN
#define WORDS_BIGENDIAN 0
#endif
#define FAST_ATOMIC_LDST_2 HAVE_ATOMIC_LDST_2
#define MAYBE_HAVE_ATOMIC_LDST_4 HAVE_ATOMIC_LDST_4
#define FAST_ATOMIC_LDST_4 HAVE_ATOMIC_LDST_4
#define MAYBE_HAVE_ATOMIC_LDST_8 HAVE_ATOMIC_LDST_8
#define FAST_ATOMIC_LDST_8 HAVE_ATOMIC_LDST_8
#define MAYBE_HAVE_ATOMIC_LDST_16 HAVE_ATOMIC_LDST_16
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