Update copyright years.

[thirdparty/gcc.git] / gcc / tree-complex.c

diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c
index 804edd11e53a0b74f90ae74acda6f6e2dbacd8a2..b11da01a58b45c00f0e3037f9188af03634170db 100644 (file)
--- a/gcc/tree-complex.c
+++ b/gcc/tree-complex.c
@@ -1,5 +1,5 @@
 /* Lower complex number operations to scalar operations.
-   Copyright (C) 2004-2019 Free Software Foundation, Inc.
+   Copyright (C) 2004-2021 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -318,7 +318,7 @@ complex_propagate::visit_stmt (gimple *stmt, edge *taken_edge_p ATTRIBUTE_UNUSED
 
   lhs = gimple_get_lhs (stmt);
   /* Skip anything but GIMPLE_ASSIGN and GIMPLE_CALL with a lhs.  */
-  if (!lhs)
+  if (!lhs || SSA_NAME_OCCURS_IN_ABNORMAL_PHI (lhs))
     return SSA_PROP_VARYING;
 
   /* These conditions should be satisfied due to the initial filter
@@ -417,6 +417,9 @@ complex_propagate::visit_phi (gphi *phi)
      set up in init_dont_simulate_again.  */
   gcc_assert (TREE_CODE (TREE_TYPE (lhs)) == COMPLEX_TYPE);
 
+  if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (lhs))
+    return SSA_PROP_VARYING;
+
   /* We've set up the lattice values such that IOR neatly models PHI meet.  */
   new_l = UNINITIALIZED;
   for (i = gimple_phi_num_args (phi) - 1; i >= 0; --i)
@@ -569,7 +572,8 @@ set_component_ssa_name (tree ssa_name, bool imag_p, tree value)
     {
       /* Replace an anonymous base value with the variable from cvc_lookup.
         This should result in better debug info.  */
-      if (SSA_NAME_VAR (ssa_name)
+      if (!SSA_NAME_IS_DEFAULT_DEF (value)
+         && SSA_NAME_VAR (ssa_name)
          && (!SSA_NAME_VAR (value) || DECL_IGNORED_P (SSA_NAME_VAR (value)))
          && !DECL_IGNORED_P (SSA_NAME_VAR (ssa_name)))
        {
@@ -1776,7 +1780,7 @@ tree_lower_complex (void)
     return 0;
 
   complex_lattice_values.create (num_ssa_names);
-  complex_lattice_values.safe_grow_cleared (num_ssa_names);
+  complex_lattice_values.safe_grow_cleared (num_ssa_names, true);
 
   init_parameter_lattice_values ();
   class complex_propagate complex_propagate;
@@ -1787,7 +1791,7 @@ tree_lower_complex (void)
   complex_variable_components = new int_tree_htab_type (10);
 
   complex_ssa_name_components.create (2 * num_ssa_names);
-  complex_ssa_name_components.safe_grow_cleared (2 * num_ssa_names);
+  complex_ssa_name_components.safe_grow_cleared (2 * num_ssa_names, true);
 
   update_parameter_components ();