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Improve -fopt-info-vec for basic-block vectorization

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We currently dump notes like

flow_lam.f:65:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:65:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:65:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:65:72: optimized: basic block part vectorized using 32 byte vectors
..

repeating the same location for multiple instances because we
clobber vect_location during BB vectorization.  The following
avoids this, improving things to

flow_lam.f:15:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:16:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:17:72: optimized: basic block part vectorized using 32 byte vectors
flow_lam.f:18:72: optimized: basic block part vectorized using 32 byte vectors
...

	* tree-vect-slp.cc (vect_slp_region): Save/restore vect_location
	around dumping code.
This commit is contained in:
Richard Biener 2023-08-07 13:53:59 +02:00
parent 831017d5e7
commit aa63c20420
1 changed files with 8 additions and 0 deletions
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8
gcc/tree-vect-slp.cc
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@ -7496,6 +7496,7 @@ vect_slp_region (vec<basic_block> bbs, vec<data_reference_p> datarefs,
if (instance->subgraph_entries.is_empty ())
continue;
dump_user_location_t saved_vect_location = vect_location;
vect_location = instance->location ();
if (!unlimited_cost_model (NULL)
&& !vect_bb_vectorization_profitable_p
@ -7505,9 +7506,11 @@ vect_slp_region (vec<basic_block> bbs, vec<data_reference_p> datarefs,
dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
"not vectorized: vectorization is not "
"profitable.\n");
vect_location = saved_vect_location;
continue;
}
vect_location = saved_vect_location;
if (!dbg_cnt (vect_slp))
continue;
@ -7557,6 +7560,9 @@ vect_slp_region (vec<basic_block> bbs, vec<data_reference_p> datarefs,
"using SLP\n");
vectorized = true;
dump_user_location_t saved_vect_location = vect_location;
vect_location = instance->location ();
vect_schedule_slp (bb_vinfo, instance->subgraph_entries);
unsigned HOST_WIDE_INT bytes;
@ -7572,6 +7578,8 @@ vect_slp_region (vec<basic_block> bbs, vec<data_reference_p> datarefs,
"basic block part vectorized using "
"variable length vectors\n");
}
vect_location = saved_vect_location;
}
}
else