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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/15826] don't use "if" to extract a single bit
 bit-field.
Date: Sun, 19 Apr 2020 18:28:19 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D15826

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |law at redhat dot com
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D81601
         Resolution|---                         |FIXED

--- Comment #19 from Jeffrey A. Law <law at redhat dot com> ---
So the core issue here, using an if, conditional moves and the like to do
single bit field extraction/testing is resolved.

There is still an issue of canonicalizing the two representations which in =
turn
opens up the possibility of finding more common subexpressions when both fo=
rms
might be used.  That is actually being tracked via pr81601.=