[Bug tree-optimization/112357] New: Documentation for vect-max-peeling-for-alignment references -1 but -1 does not work

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112357

            Bug ID: 112357
           Summary: Documentation for vect-max-peeling-for-alignment
                    references -1 but -1 does not work
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Using `-O2 --param vect-max-peeling-for-alignment=-1` provides the following
error message:
```
g++: error: argument to '--param=vect-max-peeling-for-alignment=' should be a
non-negative integer
```

But https://gcc.gnu.org/onlinedocs//gcc/Optimize-Options.html documents -1:
```
vect-max-peeling-for-alignment
The maximum number of loop peels to enhance access alignment for vectorizer.
Value -1 means no limit.
```