https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92543
--- Comment #3 from rsandifo at gcc dot gnu.org
---
Author: rsandifo
Date: Thu Nov 21 17:43:24 2019
New Revision: 278591
URL: https://gcc.gnu.org/viewcvs?rev=278591=gcc=rev
Log:
Add more markup to vect-alias-check-{1,18}.c (PR 92543)
In vect-alias-check-1.c we unroll the inner loop and then vectorise
the stores at a[c + 1][b]. Since the access has no guaranteed
alignemnt, we need a realignment mechanism or support for unaligned
accesses in order to vectorise.
In vect-alias-check-18.c we use a reverse access and so need
permute support in order to vectorise.
I'm not really sure when this part of the testsuite prefers
{ xfail { ! foo } } and when it prefers { target foo }. xfail
seems like the most common choice for the alignment restriction,
whereas vect_int and vect_perm are mostly dg-require-effective-target
style features, so I went with that combination.
2019-11-21 Richard Sandiford
gcc/testsuite/
PR testsuite/92543
* gcc.dg/vect/vect-alias-check-1.c: XFAIL the alias check message
if there is no realignment support and no support for unaligned
accesses.
* gcc.dg/vect/vect-alias-check-18.c: Restrict the test for the
alias message to targets that have permute support.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/vect-alias-check-1.c
trunk/gcc/testsuite/gcc.dg/vect/vect-alias-check-18.c
