Nikita Popov 38880e6df9 Reapply "[DemandedBits][BDCE] Support vectors of integers" ... DemandedBits and BDCE currently only support scalar integers. This patch extends them to also handle vector integer operations. In this case bits are not tracked for individual vector elements, instead a bit is demanded if it is demanded for any of the elements. This matches the behavior of computeKnownBits in ValueTracking and SimplifyDemandedBits in InstCombine. Unlike the previous iteration of this patch, getDemandedBits() can now again be called on arbirary (sized) instructions, even if they don't have integer or vector of integer type. (For vector types the size of the returned mask will now be the scalar size in bits though.) The added LoopVectorize test case shows a case which triggered an assertion failure with the previous attempt, because getDemandedBits() was called on a pointer-typed instruction. Differential Revision: https://reviews.llvm.org/D55297 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348602 91177308-0d34-0410-b5e6-96231b3b80d8		2018-12-07 15:38:13 +00:00
..
basic.ll
intrinsics.ll	[DemandedBits] Add support for funnel shifts	2018-11-26 15:36:57 +00:00
vectors.ll	Reapply "[DemandedBits][BDCE] Support vectors of integers"	2018-12-07 15:38:13 +00:00