Update copyright years.

[thirdparty/gcc.git] / gcc / tree-ssa-dce.c

diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c
index 9fb156c120d937f0fd43fbf5ff4192cda6f55e8f..d155bdfb2aefd121a578fc81f609946592ca4933 100644 (file)
--- a/gcc/tree-ssa-dce.c
+++ b/gcc/tree-ssa-dce.c
@@ -1,5 +1,5 @@
 /* Dead code elimination pass for the GNU compiler.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
    Contributed by Ben Elliston <bje@redhat.com>
    and Andrew MacLeod <amacleod@redhat.com>
    Adapted to use control dependence by Steven Bosscher, SUSE Labs.
@@ -656,67 +656,7 @@ valid_new_delete_pair_p (gimple *new_call, gimple *delete_call)
 {
   tree new_asm = DECL_ASSEMBLER_NAME (gimple_call_fndecl (new_call));
   tree delete_asm = DECL_ASSEMBLER_NAME (gimple_call_fndecl (delete_call));
-  const char *new_name = IDENTIFIER_POINTER (new_asm);
-  const char *delete_name = IDENTIFIER_POINTER (delete_asm);
-  unsigned int new_len = IDENTIFIER_LENGTH (new_asm);
-  unsigned int delete_len = IDENTIFIER_LENGTH (delete_asm);
-
-  if (new_len < 5 || delete_len < 6)
-    return false;
-  if (new_name[0] == '_')
-    ++new_name, --new_len;
-  if (new_name[0] == '_')
-    ++new_name, --new_len;
-  if (delete_name[0] == '_')
-    ++delete_name, --delete_len;
-  if (delete_name[0] == '_')
-    ++delete_name, --delete_len;
-  if (new_len < 4 || delete_len < 5)
-    return false;
-  /* *_len is now just the length after initial underscores.  */
-  if (new_name[0] != 'Z' || new_name[1] != 'n')
-    return false;
-  if (delete_name[0] != 'Z' || delete_name[1] != 'd')
-    return false;
-  /* _Znw must match _Zdl, _Zna must match _Zda.  */
-  if ((new_name[2] != 'w' || delete_name[2] != 'l')
-      && (new_name[2] != 'a' || delete_name[2] != 'a'))
-    return false;
-  /* 'j', 'm' and 'y' correspond to size_t.  */
-  if (new_name[3] != 'j' && new_name[3] != 'm' && new_name[3] != 'y')
-    return false;
-  if (delete_name[3] != 'P' || delete_name[4] != 'v')
-    return false;
-  if (new_len == 4
-      || (new_len == 18 && !memcmp (new_name + 4, "RKSt9nothrow_t", 14)))
-    {
-      /* _ZnXY or _ZnXYRKSt9nothrow_t matches
-        _ZdXPv, _ZdXPvY and _ZdXPvRKSt9nothrow_t.  */
-      if (delete_len == 5)
-       return true;
-      if (delete_len == 6 && delete_name[5] == new_name[3])
-       return true;
-      if (delete_len == 19 && !memcmp (delete_name + 5, "RKSt9nothrow_t", 14))
-       return true;
-    }
-  else if ((new_len == 19 && !memcmp (new_name + 4, "St11align_val_t", 15))
-          || (new_len == 33
-              && !memcmp (new_name + 4, "St11align_val_tRKSt9nothrow_t", 29)))
-    {
-      /* _ZnXYSt11align_val_t or _ZnXYSt11align_val_tRKSt9nothrow_t matches
-        _ZdXPvSt11align_val_t or _ZdXPvYSt11align_val_t or  or
-        _ZdXPvSt11align_val_tRKSt9nothrow_t.  */
-      if (delete_len == 20 && !memcmp (delete_name + 5, "St11align_val_t", 15))
-       return true;
-      if (delete_len == 21
-         && delete_name[5] == new_name[3]
-         && !memcmp (delete_name + 6, "St11align_val_t", 15))
-       return true;
-      if (delete_len == 34
-         && !memcmp (delete_name + 5, "St11align_val_tRKSt9nothrow_t", 29))
-       return true;
-    }
-  return false;
+  return valid_new_delete_pair_p (new_asm, delete_asm);
 }
 
 /* Propagate necessity using the operands of necessary statements.