rust/compiler/rustc_ty_utils
Scott McMurray 754f488d46 Use preserve_mostcc for extern "rust-cold"
As experimentation in 115242 has shown looks better than `coldcc`.

And *don't* use a different convention for cold on Windows, because that actually ends up making things worse.

cc tracking issue 97544
2023-08-26 17:42:59 -07:00
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