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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/107772] function prologue generated even
 though it's only needed in an unlikely path
Date: Sun, 20 Nov 2022 19:23:35 +0000
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X-Bugzilla-Component: rtl-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107772

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-11-20

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, though this is more than just the your normal shrink wrapping ca=
se
as you need to split the loop into two.

Though maybe having the prologue and epoligue around the function call inst=
ead
might be better ....

Anyways this is still a more complex case for shrink wrapping.

I Noticed that LLVM does not even do a shrink wrapping for the early return=
 if
b =3D=3D e on entering the function.=