[Bug rtl-optimization/116053] [14/15 Regression] during RTL pass: cprop_hardreg ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 2 with -O1 -finstrument-functions -fno-forward-propagate -fno-delete-dead-exceptions -fnon-call-exceptions

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116053

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

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

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r14-4944-gf55cdce3f8dd8503e080e35be59c5f5390f6d95e
Note, GIMPLE knows that the function returns its first argument.
>From optimization POV, sometimes it can be useful to propagate the first
argument to whatever uses the return value for pass-through functions, in other
cases it is beneficial to use the return value instead of having to
save/restore the argument across the call somewhere (at least if it is more
costly to compute it).