[Bug tree-optimization/77848] Gimple if-conversion results in redundant comparisons

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77848

--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
OK, I will try to get some machine time to do performance testing of the
existing patch as soon as possible.

Here is the list of failures:

> FAIL: gcc.dg/vect/bb-slp-cond-1.c -flto -ffat-lto-objects  scan-tree-dump-times slp1 "basic block vectorized" 1
> FAIL: gcc.dg/vect/bb-slp-cond-1.c scan-tree-dump-times slp1 "basic block vectorized" 1
66a69,76
> FAIL: gcc.dg/vect/vect-cond-1.c -flto -ffat-lto-objects  scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-1.c scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-3.c -flto -ffat-lto-objects  scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-3.c scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-4.c -flto -ffat-lto-objects  scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-4.c scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-6.c -flto -ffat-lto-objects  scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1
> FAIL: gcc.dg/vect/vect-cond-6.c scan-tree-dump-times vect "OUTER LOOP VECTORIZED" 1