[llvm-bugs] [Bug 25166] New: [Loop Idiom Recognizer] Missing basic memset support for loops with negative stride

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https://llvm.org/bugs/show_bug.cgi?id=25166

            Bug ID: 25166
           Summary: [Loop Idiom Recognizer] Missing basic memset support
                    for loops with negative stride
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Loop Optimizer
          Assignee: unassignedbugs at nondot.org
          Reporter: mcrosier at codeaurora.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

GCC generates a memset for the below loop, while LLVM does not.

void test(int *arr) {
  for (int i = 1023; i >= 0; --i)
    arr[i] = 0;
}

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