[Bug target/66655] [5/6 Regression] miscompilation due to ipa-ra on MinGW

[rogero at howzatt dot demon.co.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66655

--- Comment #14 from Roger Orr <rogero at howzatt dot demon.co.uk> ---
I don't know I'm afraid: I'm a very occasional mingw user and I haven't
(yet...) tried building gcc on mingw...