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* [gcc r12-5067] Introduce build_debug_expr_decl
@ 2021-11-09 16:55 Martin Jambor
  0 siblings, 0 replies; only message in thread
From: Martin Jambor @ 2021-11-09 16:55 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:2d60c0a3eedea4d0f1d40806a5f95540a1a4219e

commit r12-5067-g2d60c0a3eedea4d0f1d40806a5f95540a1a4219e
Author: Martin Jambor <mjambor@suse.cz>
Date:   Tue Nov 9 17:54:23 2021 +0100

    Introduce build_debug_expr_decl
    
    This patch introduces a helper function build_debug_expr_decl to build
    DEBUG_EXPR_DECL tree nodes in the most common way and replaces with a
    call of this function all code pieces which build such a DECL itself
    and sets its mode to the TYPE_MODE of its type.
    
    There still remain 11 instances of open-coded creation of a
    DEBUG_EXPR_DECL which set the mode of the DECL to something else.  It
    would probably be a good idea to figure out that has any effect and if
    not, convert them to calls of build_debug_expr_decl too.  But this
    patch deliberately does not introduce any functional changes.
    
    gcc/ChangeLog:
    
    2021-11-08  Martin Jambor  <mjambor@suse.cz>
    
            * tree.h (build_debug_expr_decl): Declare.
            * tree.c (build_debug_expr_decl): New function.
            * cfgexpand.c (avoid_deep_ter_for_debug): Use build_debug_expr_decl
            instead of building a DEBUG_EXPR_DECL.
            * ipa-param-manipulation.c
            (ipa_param_body_adjustments::prepare_debug_expressions): Likewise.
            * omp-simd-clone.c (ipa_simd_modify_stmt_ops): Likewise.
            * tree-ssa-ccp.c (optimize_atomic_bit_test_and): Likewise.
            * tree-ssa-phiopt.c (spaceship_replacement): Likewise.
            * tree-ssa-reassoc.c (make_new_ssa_for_def): Likewise.

Diff:
---
 gcc/cfgexpand.c              |  5 +----
 gcc/ipa-param-manipulation.c |  5 +----
 gcc/omp-simd-clone.c         |  5 +----
 gcc/tree-ssa-ccp.c           |  5 +----
 gcc/tree-ssa-phiopt.c        | 10 ++--------
 gcc/tree-ssa-reassoc.c       |  5 +----
 gcc/tree.c                   | 12 ++++++++++++
 gcc/tree.h                   |  1 +
 8 files changed, 20 insertions(+), 28 deletions(-)

diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index 01d0cdc548a..55ff75bd78e 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -4341,11 +4341,8 @@ avoid_deep_ter_for_debug (gimple *stmt, int depth)
 	  tree &vexpr = deep_ter_debug_map->get_or_insert (use);
 	  if (vexpr != NULL)
 	    continue;
-	  vexpr = make_node (DEBUG_EXPR_DECL);
+	  vexpr = build_debug_expr_decl (TREE_TYPE (use));
 	  gimple *def_temp = gimple_build_debug_bind (vexpr, use, g);
-	  DECL_ARTIFICIAL (vexpr) = 1;
-	  TREE_TYPE (vexpr) = TREE_TYPE (use);
-	  SET_DECL_MODE (vexpr, TYPE_MODE (TREE_TYPE (use)));
 	  gimple_stmt_iterator gsi = gsi_for_stmt (g);
 	  gsi_insert_after (&gsi, def_temp, GSI_NEW_STMT);
 	  avoid_deep_ter_for_debug (def_temp, 0);
diff --git a/gcc/ipa-param-manipulation.c b/gcc/ipa-param-manipulation.c
index 4610fc4ac03..ae3149718ca 100644
--- a/gcc/ipa-param-manipulation.c
+++ b/gcc/ipa-param-manipulation.c
@@ -1200,10 +1200,7 @@ ipa_param_body_adjustments::prepare_debug_expressions (tree dead_ssa)
 	= unshare_expr_without_location (gimple_assign_rhs_to_tree (def));
       remap_with_debug_expressions (&val);
 
-      tree vexpr = make_node (DEBUG_EXPR_DECL);
-      DECL_ARTIFICIAL (vexpr) = 1;
-      TREE_TYPE (vexpr) = TREE_TYPE (val);
-      SET_DECL_MODE (vexpr, TYPE_MODE (TREE_TYPE (val)));
+      tree vexpr = build_debug_expr_decl (TREE_TYPE (val));
       m_dead_stmt_debug_equiv.put (def, val);
       m_dead_ssa_debug_equiv.put (dead_ssa, vexpr);
       return true;
diff --git a/gcc/omp-simd-clone.c b/gcc/omp-simd-clone.c
index b772b7ff520..4d43a86669a 100644
--- a/gcc/omp-simd-clone.c
+++ b/gcc/omp-simd-clone.c
@@ -910,11 +910,8 @@ ipa_simd_modify_stmt_ops (tree *tp, int *walk_subtrees, void *data)
       gimple *stmt;
       if (is_gimple_debug (info->stmt))
 	{
-	  tree vexpr = make_node (DEBUG_EXPR_DECL);
+	  tree vexpr = build_debug_expr_decl (TREE_TYPE (repl));
 	  stmt = gimple_build_debug_source_bind (vexpr, repl, NULL);
-	  DECL_ARTIFICIAL (vexpr) = 1;
-	  TREE_TYPE (vexpr) = TREE_TYPE (repl);
-	  SET_DECL_MODE (vexpr, TYPE_MODE (TREE_TYPE (repl)));
 	  repl = vexpr;
 	}
       else
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c
index 70ce6a4d5b8..60ae5e6601f 100644
--- a/gcc/tree-ssa-ccp.c
+++ b/gcc/tree-ssa-ccp.c
@@ -3452,10 +3452,7 @@ optimize_atomic_bit_test_and (gimple_stmt_iterator *gsip,
       tree temp = NULL_TREE;
       if (!throws || after || single_pred_p (e->dest))
 	{
-	  temp = make_node (DEBUG_EXPR_DECL);
-	  DECL_ARTIFICIAL (temp) = 1;
-	  TREE_TYPE (temp) = TREE_TYPE (lhs);
-	  SET_DECL_MODE (temp, TYPE_MODE (TREE_TYPE (lhs)));
+	  temp = build_debug_expr_decl (TREE_TYPE (lhs));
 	  tree t = build2 (LSHIFT_EXPR, TREE_TYPE (lhs), new_lhs, bit);
 	  g = gimple_build_debug_bind (temp, t, g);
 	  if (throws && !after)
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c
index 0e339c46afa..173ac835ca6 100644
--- a/gcc/tree-ssa-phiopt.c
+++ b/gcc/tree-ssa-phiopt.c
@@ -2429,19 +2429,13 @@ spaceship_replacement (basic_block cond_bb, basic_block middle_bb,
 	     all floating point numbers should be comparable.  */
 	  gimple_stmt_iterator gsi = gsi_after_labels (gimple_bb (phi));
 	  tree type = TREE_TYPE (phires);
-	  tree temp1 = make_node (DEBUG_EXPR_DECL);
-	  DECL_ARTIFICIAL (temp1) = 1;
-	  TREE_TYPE (temp1) = type;
-	  SET_DECL_MODE (temp1, TYPE_MODE (type));
+	  tree temp1 = build_debug_expr_decl (type);
 	  tree t = build2 (one_cmp, boolean_type_node, lhs1, rhs2);
 	  t = build3 (COND_EXPR, type, t, build_one_cst (type),
 		      build_int_cst (type, -1));
 	  gimple *g = gimple_build_debug_bind (temp1, t, phi);
 	  gsi_insert_before (&gsi, g, GSI_SAME_STMT);
-	  tree temp2 = make_node (DEBUG_EXPR_DECL);
-	  DECL_ARTIFICIAL (temp2) = 1;
-	  TREE_TYPE (temp2) = type;
-	  SET_DECL_MODE (temp2, TYPE_MODE (type));
+	  tree temp2 = build_debug_expr_decl (type);
 	  t = build2 (EQ_EXPR, boolean_type_node, lhs1, rhs2);
 	  t = build3 (COND_EXPR, type, t, build_zero_cst (type), temp1);
 	  g = gimple_build_debug_bind (temp2, t, phi);
diff --git a/gcc/tree-ssa-reassoc.c b/gcc/tree-ssa-reassoc.c
index db9fb4e1cac..6a555e7c553 100644
--- a/gcc/tree-ssa-reassoc.c
+++ b/gcc/tree-ssa-reassoc.c
@@ -1259,15 +1259,12 @@ make_new_ssa_for_def (gimple *stmt, enum tree_code opcode, tree op)
 	{
 	  if (new_debug_lhs == NULL_TREE)
 	    {
-	      new_debug_lhs = make_node (DEBUG_EXPR_DECL);
+	      new_debug_lhs = build_debug_expr_decl (TREE_TYPE (lhs));
 	      gdebug *def_temp
 		= gimple_build_debug_bind (new_debug_lhs,
 					   build2 (opcode, TREE_TYPE (lhs),
 						   new_lhs, op),
 					   stmt);
-	      DECL_ARTIFICIAL (new_debug_lhs) = 1;
-	      TREE_TYPE (new_debug_lhs) = TREE_TYPE (lhs);
-	      SET_DECL_MODE (new_debug_lhs, TYPE_MODE (TREE_TYPE (lhs)));
 	      gimple_set_uid (def_temp, gimple_uid (stmt));
 	      gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
 	      gsi_insert_after (&gsi, def_temp, GSI_SAME_STMT);
diff --git a/gcc/tree.c b/gcc/tree.c
index 7bfd64160f4..845228a055b 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -5280,6 +5280,18 @@ build_decl (location_t loc, enum tree_code code, tree name,
   return t;
 }
 
+/* Create and return a DEBUG_EXPR_DECL node of the given TYPE.  */
+
+tree
+build_debug_expr_decl (tree type)
+{
+  tree vexpr = make_node (DEBUG_EXPR_DECL);
+  DECL_ARTIFICIAL (vexpr) = 1;
+  TREE_TYPE (vexpr) = type;
+  SET_DECL_MODE (vexpr, TYPE_MODE (type));
+  return vexpr;
+}
+
 /* Builds and returns function declaration with NAME and TYPE.  */
 
 tree
diff --git a/gcc/tree.h b/gcc/tree.h
index 7542d97ce12..f62c00bc870 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -4567,6 +4567,7 @@ extern tree build_tree_list (tree, tree CXX_MEM_STAT_INFO);
 extern tree build_tree_list_vec (const vec<tree, va_gc> * CXX_MEM_STAT_INFO);
 extern tree build_decl (location_t, enum tree_code,
 			tree, tree CXX_MEM_STAT_INFO);
+extern tree build_debug_expr_decl (tree type);
 extern tree build_fn_decl (const char *, tree);
 extern tree build_translation_unit_decl (tree);
 extern tree build_block (tree, tree, tree, tree);


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