https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65546
Bug ID: 65546
Summary: FAIL: gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Created attachment 35128
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35128&action=edit
.vect dump of failed test.
With gcc 5, the costmodel-vect-31a.c test fails the following assertion:
gcc.log:FAIL: gcc.dg/vect/costmodel/ppc/costmodel-vect-31a.c
scan-tree-dump-times vect "vectorization not profitable" 1
The .vect dump shows vectorization failed (as the test assertion expects) but
due to unsupported alignment rather than due to vectorization not being
profitable.
costmodel-vect-31a.c:27:3: note: Analyze phi: ivtmp_1 = PHI <ivtmp_12(4),
16(2)>
costmodel-vect-31a.c:27:3: note: vect_model_store_cost: aligned.
costmodel-vect-31a.c:27:3: note: vect_get_data_access_cost: inside_cost = 1,
outside_cost = 0.
costmodel-vect-31a.c:27:3: note: not vectorized: unsupported unaligned
store.tmp.b[i_15]
costmodel-vect-31a.c:27:3: note: bad data alignment.
costmodel-vect-31a.c:21:5: note: vectorized 0 loops in function.
