Sanjay Patel 4fd2e2a498 [DAGCombiner][x86] add transform/hook to decompose integer multiply into shift/add ... This is an alternative to D37896. I don't see a way to decompose multiplies generically without a target hook to tell us when it's profitable. ARM and AArch64 may be able to remove some duplicate code that overlaps with this transform. As a first step, we're only getting the most clear wins on the vector examples requested in PR34474: https://bugs.llvm.org/show_bug.cgi?id=34474 As noted in the code comment, it's likely that the x86 constraints are tighter than necessary, but it may not always be a win to replace a pmullw/pmulld. Differential Revision: https://reviews.llvm.org/D52195 llvm-svn: 342554		2018-09-19 15:57:40 +00:00
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llvm	[DAGCombiner][x86] add transform/hook to decompose integer multiply into shift/add	2018-09-19 15:57:40 +00:00
llvm-c	[LLVM-C][OCaml] Add UnifyFunctionExitNodes pass to C and OCaml APIs	2018-09-18 13:36:03 +00:00