https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108271
Robin Dapp <rdapp at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rdapp at gcc dot gnu.org
--- Comment #3 from Robin Dapp <rdapp at gcc dot gnu.org> ---
This is basically the same problem as PR108412. As long as loads/stores have a
high(ish) latency and we mostly do load/store, they will tend to lump together
at the end of the function. Setting vector load/store to a latency of <= 2
helps here and we might want to do this in order to avoid excessive spilling.
I had to deal with this before, e.g. in SPEC2006's calculix.
In the end insn scheduling wouldn't buy us anything and rather caused more
spilling causing performance degradationl
