https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94019
Kewen Lin <linkw at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-03-04
CC| |linkw at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |linkw at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Kewen Lin <linkw at gcc dot gnu.org> ---
It's a power7 specific test case issue, the failure is due to the below
statement existence:
__vector signed char vect__4.25;
Without misaligned vector access support, it has to use realign_load which
requires one vector char based control vector.
vect__4.22_82 = MEM <vector(8) short unsigned int> [(short unsigned int
*)vectp_b.24_81];
vect__4.25_83 = __builtin_altivec_mask_for_load (vectp_b.24_79);
...
vect__4.29_91 = MEM <vector(8) short unsigned int> [(short unsigned int
*)vectp_b.27_90];
vect__4.30_92 = REALIGN_LOAD <vect__4.26_84, vect__4.29_91, vect__4.25_83>;
The fix can be to guard the check under misaligned vector access support.
--- a/gcc/testsuite/gcc.dg/vect/vect-over-widen-17.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-over-widen-17.c
@@ -41,6 +41,6 @@ main (void)
}
/* { dg-final { scan-tree-dump-not {vect_recog_over_widening_pattern:
detected} "vect" } } */
-/* { dg-final { scan-tree-dump-not {vector[^\n]*char} "vect" } } */
+/* { dg-final { scan-tree-dump-not {vector[^\n]*char} "vect" { target
vect_hw_misalign } } } */
/* { dg-final { scan-tree-dump-not {vector[^ ]* int} "vect" } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" } } */
