[llvm-bugs] [Bug 46822] New: Failure to optimize based on [[noreturn]]

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Jul 23 08:36:46 PDT 2020


            Bug ID: 46822
           Summary: Failure to optimize based on [[noreturn]]
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: gabravier at gmail.com
                CC: llvm-bugs at lists.llvm.org

[[noreturn]] void g(int i)
    if (i > 0)

This can be optimized to `abort();`. This transformation is done by GCC, but
not by LLVM.

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