[PATCH] D44102: Teach CorrelatedValuePropagation to reduce the width of udiv/urem instructions.

[Justin Lebar via Phabricator via llvm-commits]

jlebar updated this revision to Diff 137140.
jlebar added a comment.

Use getConstantRange instead of getPredicateAt.

The new testcase that checks that sdiv i32 is narrowed to udiv i8 currently
fails because the sdiv i32 -> udiv i32 transition uses getPredicateAt rather
than getConstantRange.


https://reviews.llvm.org/D44102

Files:
  llvm/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp
  llvm/test/Transforms/CorrelatedValuePropagation/udiv.ll
  llvm/test/Transforms/CorrelatedValuePropagation/urem.ll

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