https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96864
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Summary|loop not vectorized due to |loop not vectorized due
|cost model |AVX512 condition handling
Blocks| |53947
Keywords| |missed-optimization
Target| |x86_64-*-* i?86-*-*
Ever confirmed|0 |1
Last reconfirmed| |2020-08-31
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
t.c:3:5: missed: not vectorized: relevant stmt not supported: patt_25 =
(<signed-boolean:1>) patt_24;
t.c:6:5: missed: bad operation or unsupported loop bound.
t.c:6:5: note: ***** Analysis failed with vector mode V4DF
it's more a bad pattern for condition vectorization and AVX512 it seems.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
