Clement Courbet 4f713f8431 [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
..
AggressiveInstCombine	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Coroutines	[opaque pointer types] Pass value type to LoadInst creation.	2019-02-01 20:44:24 +00:00
Hello	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
InstCombine	[InstCombine] Fold add nsw + sadd.with.overflow	2019-03-06 18:30:00 +00:00
Instrumentation	[msan] Instrument x86 BMI intrinsics.	2019-03-04 22:58:20 +00:00
IPO	[PGO] Context sensitive PGO (part 3)	2019-03-04 20:21:27 +00:00
ObjCARC	[opaque pointer types] Pass function type for CallBase::setCalledFunction.	2019-02-01 20:44:54 +00:00
Scalar	[LSR] Attempt to increase the accuracy of LSR's setup cost	2019-03-07 13:44:40 +00:00
Utils	[SelectionDAG] Allow the user to specify a memeq function.	2019-03-08 09:07:45 +00:00
Vectorize	Hide two unused debugging methods, NFCI.	2019-03-01 17:15:21 +00:00
CMakeLists.txt	Another try to commit 323321 (aggressive instruction combine).	2018-01-25 12:06:32 +00:00
LLVMBuild.txt	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00