The following includes whether we vectorize an epilogue, whether
we use loop masking and what vectorization factor (unroll factor)
we use. So it's now
t.c:4:21: optimized: loop vectorized using 64 byte vectors and unroll factor 32
t.c:4:21: optimized: epilogue loop vectorized using masked 64 byte vectors and
unroll factor 32
for a masked epilogue with AVX512 and HImode data for example. Rather
than
t.c:4:21: optimized: loop vectorized using 64 byte vectors
t.c:4:21: optimized: loop vectorized using 64 byte vectors
I verified we don't translate opt-info messages and thus excessive
use of %s to compose the strings should be OK.
Bootstrap and regtest ongoing on x86_64-unknown-linux-gnu
(merely to look for testcases scanning for the old message too
closely).
Any comments or suggestions for improvements?
* tree-vectorizer.cc (vect_transform_loops): When diagnosing
a vectorized loop indicate whether we vectorized an epilogue,
whether we used masked vectors and what unroll factor was
used.
---
gcc/tree-vectorizer.cc | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/gcc/tree-vectorizer.cc b/gcc/tree-vectorizer.cc
index 447f882c518..2f77e46ba99 100644
--- a/gcc/tree-vectorizer.cc
+++ b/gcc/tree-vectorizer.cc
@@ -1026,10 +1026,19 @@ vect_transform_loops (hash_table<simduid_to_vf>
*&simduid_to_vf_htab,
{
if (GET_MODE_SIZE (loop_vinfo->vector_mode).is_constant (&bytes))
dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
- "loop vectorized using %wu byte vectors\n", bytes);
+ "%sloop vectorized using %s%wu byte vectors and"
+ " unroll factor %u\n",
+ LOOP_VINFO_EPILOGUE_P (loop_vinfo)
+ ? "epilogue " : "",
+ LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo)
+ ? "masked " : "", bytes,
+ (unsigned int) LOOP_VINFO_VECT_FACTOR
+ (loop_vinfo).to_constant ());
else
dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
- "loop vectorized using variable length vectors\n");
+ "%sloop vectorized using variable length vectors\n",
+ LOOP_VINFO_EPILOGUE_P (loop_vinfo)
+ ? "epilogue " : "");
}
loop_p new_loop = vect_transform_loop (loop_vinfo,
--
2.43.0
