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" } } */