[llvm-bugs] [Bug 40848] New: Wrong debug info generated at -O1/-O2/-O3 (-O0 is correct)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40848

            Bug ID: 40848
           Summary: Wrong debug info generated at -O1/-O2/-O3 (-O0 is
                    correct)
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Keywords: wrong-debug
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: davide at freebsd.org
                CC: florian_hahn at apple.com, jeremy.morse.llvm at gmail.com,
                    llvm-bugs at lists.llvm.org, vsk at apple.com

$ cat outer.c 
void optimize_me_not() {}

$ cat 5.c 
int main() {
  int p_9 = -1662757339;
  optimize_me_not();
}


(lldb) br set -p optimize_me_not
Breakpoint 1: where = a.out`main + 1 at 5.c:4:3, address = 0x0000000000400481

#### -O1

(lldb) frame var p_9
(int) p_9 = -3

### -O0

(lldb) frame var p_9
(int) p_9 = -1662757339

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