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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/98404] Compiler emits unexpected function call that may cause
 security problems
Date: Sun, 20 Dec 2020 21:37:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98404

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You can always -fno-tree-loop-distribute-patterns.

And as for -Os, especially in the earlier optimizations, GCC can't really k=
now
if a particular optimization will for a particular code result in larger or
smaller code, it needs to use heuristics, which is tuned for improving code
size in general, but can always misfire on some particular testcases.  For
inlining, GCC has -Os heuristics and estimation if function will grow or
decrease overall size.=