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| author | Feng Xue <fxue@os.amperecomputing.com> | 2024-06-15 23:17:10 +0800 |
|---|---|---|
| committer | Feng Xue <fxue@os.amperecomputing.com> | 2024-06-20 10:35:38 +0800 |
| commit | 70466e6f9d9fb87f78ffe2e397ca876b380cb493 (patch) | |
| tree | 090edef1f11732443da8e4ab8e91e8f83ca19cba | |
| parent | ebfffb6c6557f1375c230ae6751f697cdfab4a60 (diff) | |
| download | gcc-70466e6f9d9fb87f78ffe2e397ca876b380cb493.zip gcc-70466e6f9d9fb87f78ffe2e397ca876b380cb493.tar.gz gcc-70466e6f9d9fb87f78ffe2e397ca876b380cb493.tar.bz2 | |
vect: Add a function to check lane-reducing stmt
Add a utility function to check if a statement is lane-reducing operation,
which could simplify some existing code.
2024-06-16 Feng Xue <fxue@os.amperecomputing.com>
gcc/
* tree-vectorizer.h (lane_reducing_stmt_p): New function.
* tree-vect-slp.cc (vect_analyze_slp): Use new function
lane_reducing_stmt_p to check statement.
| -rw-r--r-- | gcc/tree-vect-slp.cc | 4 | ||||
| -rw-r--r-- | gcc/tree-vectorizer.h | 12 |
2 files changed, 13 insertions, 3 deletions
diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc index 7d18b5b..a566594 100644 --- a/gcc/tree-vect-slp.cc +++ b/gcc/tree-vect-slp.cc @@ -3919,7 +3919,6 @@ vect_analyze_slp (vec_info *vinfo, unsigned max_tree_size) scalar_stmts.create (loop_vinfo->reductions.length ()); for (auto next_info : loop_vinfo->reductions) { - gassign *g; next_info = vect_stmt_to_vectorize (next_info); if ((STMT_VINFO_RELEVANT_P (next_info) || STMT_VINFO_LIVE_P (next_info)) @@ -3931,8 +3930,7 @@ vect_analyze_slp (vec_info *vinfo, unsigned max_tree_size) { /* Do not discover SLP reductions combining lane-reducing ops, that will fail later. */ - if (!(g = dyn_cast <gassign *> (STMT_VINFO_STMT (next_info))) - || !lane_reducing_op_p (gimple_assign_rhs_code (g))) + if (!lane_reducing_stmt_p (STMT_VINFO_STMT (next_info))) scalar_stmts.quick_push (next_info); else { diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index 6bb0f5c..60224f4 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -2169,12 +2169,24 @@ vect_apply_runtime_profitability_check_p (loop_vec_info loop_vinfo) && th >= vect_vf_for_cost (loop_vinfo)); } +/* Return true if CODE is a lane-reducing opcode. */ + inline bool lane_reducing_op_p (code_helper code) { return code == DOT_PROD_EXPR || code == WIDEN_SUM_EXPR || code == SAD_EXPR; } +/* Return true if STMT is a lane-reducing statement. */ + +inline bool +lane_reducing_stmt_p (gimple *stmt) +{ + if (auto *assign = dyn_cast <gassign *> (stmt)) + return lane_reducing_op_p (gimple_assign_rhs_code (assign)); + return false; +} + /* Source location + hotness information. */ extern dump_user_location_t vect_location; |