[llvm-bugs] [Bug 41350] New: Missing (trunc (phi (sext X), Y)) to (phi X, (trunc Y)) simplification

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Apr 2 13:12:52 PDT 2019


https://bugs.llvm.org/show_bug.cgi?id=41350

            Bug ID: 41350
           Summary: Missing (trunc (phi (sext X), Y)) to (phi X, (trunc
                    Y)) simplification
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: david.bolvansky at gmail.com
                CC: llvm-bugs at lists.llvm.org

As noted in PR41110, we also miss this tranformation.

(trunc (phi (sext X), Y)) ->  (phi X, (trunc Y))

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