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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/112357] New: Documentation for
 vect-max-peeling-for-alignment references -1 but -1 does not work
Date: Thu, 02 Nov 2023 22:18:02 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: documentation
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112357

            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=3D-1` provides the follow=
ing
error message:
```
g++: error: argument to '--param=3Dvect-max-peeling-for-alignment=3D' shoul=
d 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.
```=