[llvm-bugs] [Bug 39091] New: Missed strlen(globalconststr) fold

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39091

            Bug ID: 39091
           Summary: Missed strlen(globalconststr) fold
           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

Currently, LLVM refuses to fold:

const char *key = "data"; // folded if key[]

int key_len(void) {
    return strlen(key);
}


Probably we need to support it in GetStringLength in ValueTracking.

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