Clement Courbet 8e16d73346 [SelectionDAG] Allow the user to specify a memeq function. ... Summary: Right now, when we encounter a string equality check, e.g. `if (memcmp(a, b, s) == 0)`, we try to expand to a comparison if `s` is a small compile-time constant, and fall back on calling `memcmp()` else. This is sub-optimal because memcmp has to compute much more than equality. This patch replaces `memcmp(a, b, s) == 0` by `bcmp(a, b, s) == 0` on platforms that support `bcmp`. `bcmp` can be made much more efficient than `memcmp` because equality compare is trivially parallel while lexicographic ordering has a chain dependency. Subscribers: fedor.sergeev, jyknight, ckennelly, gchatelet, llvm-commits Differential Revision: https://reviews.llvm.org/D56593 llvm-svn: 355672		2019-03-08 09:07:45 +00:00
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llvm	[SelectionDAG] Allow the user to specify a memeq function.	2019-03-08 09:07:45 +00:00
llvm-c	[OptRemarks] Make OptRemarks more generic: rename OptRemarks to Remarks	2019-03-05 20:45:17 +00:00