middle-end/108086 - more operand scanner reduction in inlining

There's another round of redundant operand scanning in
remap_gimple_stmt.  The following removes this and also improves
one special-case to call a cheaper inline function.

	PR middle-end/108086
	* tree-inline.cc (remap_gimple_stmt): Add stmts to the
	sequence without updating them.  Simplify x == x detection.

diff --git a/gcc/tree-inline.cc b/gcc/tree-inline.cc
index 0360f1f..02d8c39 100644 (file)
--- a/gcc/tree-inline.cc
+++ b/gcc/tree-inline.cc
@@ -1535,7 +1535,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
       if (id->reset_location)
        gimple_set_location (bind, input_location);
       id->debug_stmts.safe_push (bind);
-      gimple_seq_add_stmt (&stmts, bind);
+      gimple_seq_add_stmt_without_update (&stmts, bind);
       return stmts;
     }
 
@@ -1765,7 +1765,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
     }
   else
     {
-      if (gimple_assign_copy_p (stmt)
+      if (gimple_assign_single_p (stmt)
          && gimple_assign_lhs (stmt) == gimple_assign_rhs1 (stmt)
          && auto_var_in_fn_p (gimple_assign_lhs (stmt), id->src_fn))
        {
@@ -1833,7 +1833,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
          if (id->reset_location)
            gimple_set_location (copy, input_location);
          id->debug_stmts.safe_push (copy);
-         gimple_seq_add_stmt (&stmts, copy);
+         gimple_seq_add_stmt_without_update (&stmts, copy);
          return stmts;
        }
       if (gimple_debug_source_bind_p (stmt))
@@ -1845,7 +1845,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
          if (id->reset_location)
            gimple_set_location (copy, input_location);
          id->debug_stmts.safe_push (copy);
-         gimple_seq_add_stmt (&stmts, copy);
+         gimple_seq_add_stmt_without_update (&stmts, copy);
          return stmts;
        }
       if (gimple_debug_nonbind_marker_p (stmt))
@@ -1859,7 +1859,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
 
          gdebug *copy = as_a <gdebug *> (gimple_copy (stmt));
          id->debug_stmts.safe_push (copy);
-         gimple_seq_add_stmt (&stmts, copy);
+         gimple_seq_add_stmt_without_update (&stmts, copy);
          return stmts;
        }
 
@@ -1967,7 +1967,7 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
               !gsi_end_p (egsi);
               gsi_next (&egsi))
            walk_gimple_op (gsi_stmt (egsi), remap_gimple_op_r, &wi);
-         gimple_seq_add_seq (&stmts, extra_stmts);
+         gimple_seq_add_seq_without_update (&stmts, extra_stmts);
        }
     }
 
@@ -2006,14 +2006,14 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id)
                                     gimple_cond_code (cond),
                                     gimple_cond_lhs (cond),
                                     gimple_cond_rhs (cond));
-           gimple_seq_add_stmt (&stmts, cmp);
+           gimple_seq_add_stmt_without_update (&stmts, cmp);
            gimple_cond_set_code (cond, NE_EXPR);
            gimple_cond_set_lhs (cond, gimple_assign_lhs (cmp));
            gimple_cond_set_rhs (cond, boolean_false_node);
          }
     }
 
-  gimple_seq_add_stmt (&stmts, copy);
+  gimple_seq_add_stmt_without_update (&stmts, copy);
   return stmts;
 }