libstdc++-v3/include/ext · a6bc04232912152fff06106d082c8f04a6d6fa91 · lvzhengyang / riscv-gcc-1

re PR libstdc++/51798 (libstdc++ atomicity performance regression due to __sync_fetch_and_add) · 7dcbaaa9

	PR libstdc++/51798
	* config/cpu/generic/atomicity_builtins/atomicity.h
	(__exchange_and_add, __atomic_add): Use __atomic_fetch_add
	with __ATOMIC_ACQ_REL semantics instead of __sync_fetch_and_add.
	* include/ext/atomicity.h (__exchange_and_add, __atomic_add):
	Likewise.

From-SVN: r183644

committed Jan 27, 2012

7dcbaaa9

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pb_ds		Loading commit data...
algorithm		Loading commit data...
alloc_traits.h		Loading commit data...
array_allocator.h		Loading commit data...
atomicity.h		Loading commit data...
bitmap_allocator.h		Loading commit data...
cast.h		Loading commit data...
codecvt_specializations.h		Loading commit data...
concurrence.h		Loading commit data...
debug_allocator.h		Loading commit data...
enc_filebuf.h		Loading commit data...
extptr_allocator.h		Loading commit data...
functional		Loading commit data...
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malloc_allocator.h		Loading commit data...
memory		Loading commit data...
mt_allocator.h		Loading commit data...
new_allocator.h		Loading commit data...
numeric		Loading commit data...
numeric_traits.h		Loading commit data...
pod_char_traits.h		Loading commit data...
pointer.h		Loading commit data...
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rb_tree		Loading commit data...
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rope		Loading commit data...
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sso_string_base.h		Loading commit data...
stdio_filebuf.h		Loading commit data...
stdio_sync_filebuf.h		Loading commit data...
string_conversions.h		Loading commit data...
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