https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108601
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |liuhongt at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
To me it's obvious that the path in the backtrace gets a non-constant niter
bump
since we're dealing with epilog peeling. Either we need to reject this when
requiring a peeled epilogue or we should deal with a non-constant skip_niters.
This was introduced with r13-2503-gc13223b790bbc5.
Btw, I wonder why we need to use this function instead of re-using the
IV from the vectorized loop (or extracting the "last" value from the
vectorized variant).
It should be possible to construct a testcase with a vectorizable non-linear IV
that requires peeling of the epilog?
