[Bug rtl-optimization/64317] [5 Regression] Ineffective allocation of PIC base register

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64317

Jeffrey A. Law <law at redhat dot com> changed:

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--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
Vlad,

What's the rationale behind the 50% probability cutoff for forming an EBB?  For
the purposes of inheritance, ISTM you want the biggest EBBs possible to give
you a maximal window in which to find an insn to inherit from?  Or is it the
case that EBB formation impacts both spilling and inheritance in IRA/LRA?