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* [gcc r14-3033] Improve -fopt-info-vec for basic-block vectorization
@ 2023-08-07 13:18 Richard Biener
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From: Richard Biener @ 2023-08-07 13:18 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:aa63c20420db78ca77ec243af02c7591b88d3b89
commit r14-3033-gaa63c20420db78ca77ec243af02c7591b88d3b89
Author: Richard Biener <rguenther@suse.de>
Date: Mon Aug 7 13:53:59 2023 +0200
Improve -fopt-info-vec for basic-block vectorization
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.
Diff:
---
gcc/tree-vect-slp.cc | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc
index a1b153035e1..eab3dcd40ec 100644
--- a/gcc/tree-vect-slp.cc
+++ b/gcc/tree-vect-slp.cc
@@ -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
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2023-08-07 13:18 [gcc r14-3033] Improve -fopt-info-vec for basic-block vectorization Richard Biener
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