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From: "gabravier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/98966] New: Failure to optimize conditional
 or with 1 based on boolean condition to direct or
Date: Wed, 03 Feb 2021 23:53:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98966

            Bug ID: 98966
           Summary: Failure to optimize conditional or with 1 based on
                    boolean condition to direct or
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gabravier at gmail dot com
  Target Milestone: ---

int f(int m, bool c)
{
    return c ? (m | 1) : m;
}

This can be optimized to `return m | c;`. This transformation is done by LL=
VM,
but not by GCC.=