[llvm-bugs] [Bug 46013] New: Failure to optimize out casting in division of casted char (to int)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46013

            Bug ID: 46013
           Summary: Failure to optimize out casting in division of casted
                    char (to int)
           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

int f(signed char a)
{
    return (((unsigned int)(int)a) / 2LL);
}

This can be optimized to `return (unsigned)(int)a >> 1;`. This transformation
is done by GCC, but not by LLVM.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20200520/63a4d02b/attachment.html>