[Bug bootstrap/77962] [7 Regression] Bootstrap failure on x86_64-linux starting with r241063

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77962

Segher Boessenkool <segher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Assignee|unassigned at gcc dot gnu.org      |segher at gcc dot gnu.org

--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 39801
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39801&action=edit
preliminary patch

This patch fixes the i386 problem (or, works around it).  On 32-bit
i386 the split prologue has to be created before the regular prologue
as far as I see.

Testing now if that works on powerpc; if not, we can always also
disallow separate shrink-wrapping functions with split stack (maybe
not a bad idea anyway).