[llvm-bugs] [Bug 46409] New: Failure to optimize out strcpy call when passed a parameter that could be evaluated at constant time

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46409

            Bug ID: 46409
           Summary: Failure to optimize out strcpy call when passed a
                    parameter that could be evaluated at constant time
           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

char *f(void)
{
    char *p = (char *)malloc(1);
    char s[] = "";
    strcpy(p, s);
    return p;
}

The call to strcpy can be omitted her and just replaced by `*p = 0;`. This
transformation is done by GCC, but not by LLVM.

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