Re-re-land: Teach CorrelatedValuePropagation to reduce the width of udiv/urem instructions.
Summary:
If the operands of a udiv/urem can be proved to fit within a smaller
power-of-two-sized type, reduce the width of the udiv/urem.
Backed out for causing performance regressions. Re-landing
because we've determined that these regressions were noise.
Original Differential Revision: https://reviews.llvm.org/D44102
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328096
91177308-0d34-0410-b5e6-
96231b3b80d8
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