[Bug target/105922] autovectorizer does not handle fp exceptions correctly for SVE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105922 Andrew Pinski changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |DUPLICATE --- Comment #3 from Andrew Pinski --- Dup of bug 96373. *** This bug has been marked as a duplicate of bug 96373 ***
[Bug target/105922] autovectorizer does not handle fp exceptions correctly for SVE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105922 Richard Biener changed: What|Removed |Added Keywords||wrong-code --- Comment #2 from Richard Biener --- (In reply to Andrew Pinski from comment #1) > Confirmed. The division should have been predicated on the same as the > load/store but currently GCC does not do that. > > GCC does not really support looking into fpu status bits or exceptions while > vectorizing either. It effectively "supports" it by failing to vectorize when exception state builtins are used in the vectorized region and otherwise it just accumulates exception bits (but it doesn't support in-order traps if you enable exceptions to trap). Note there's a bit of confusion as to what exactly controls FP exception bit correctness and the documentation should probably be clarified.
[Bug target/105922] autovectorizer does not handle fp exceptions correctly for SVE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105922 Andrew Pinski changed: What|Removed |Added Summary|AArch64 SVE instruction |autovectorizer does not |generated with all SIMD |handle fp exceptions |lane active and zero-divide |correctly for SVE |exception flag raised | Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed||2022-06-12 --- Comment #1 from Andrew Pinski --- Confirmed. The division should have been predicated on the same as the load/store but currently GCC does not do that. GCC does not really support looking into fpu status bits or exceptions while vectorizing either.
