re PR c++/87229 (ICE: tree code 'call_expr' is not supported in LTO streams)

2018-11-22  Richard Biener  <rguenther@suse.de>

	PR lto/87229
	PR lto/88112
	* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
	which can appear in size expressions.
	* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
	CALL_EXPR_BY_DESCRIPTOR.
	(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
	* tree-streamer-out.c (pack_ts_base_value_fields): Stream
	CALL_EXPR_BY_DESCRIPTOR.
	(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.

	Revert
	PR lto/87229
	* tree.c (free_lang_data_in_one_sizepos): Free non-gimple-val
	sizepos values.

From-SVN: r266372

gcc/ChangeLog

 2018-11-22  Richard Biener  <rguenther@suse.de>
 
+	PR lto/87229
+	PR lto/88112
+	* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
+	which can appear in size expressions.
+	* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
+	CALL_EXPR_BY_DESCRIPTOR.
+	(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
+	* tree-streamer-out.c (pack_ts_base_value_fields): Stream
+	CALL_EXPR_BY_DESCRIPTOR.
+	(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
+
+	Revert
+	PR lto/87229
+	* tree.c (free_lang_data_in_one_sizepos): Free non-gimple-val
+	sizepos values.
+
+2018-11-22  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/88069
 	* tree-ssa-sccvn.c (visit_phi): Tweak previous fix to not
 	apply to default defs.

gcc/lto-streamer-out.c

@@ -306,7 +306,6 @@ lto_is_streamable (tree expr)
      name version in lto_output_tree_ref (see output_ssa_names).  */
   return !is_lang_specific (expr)
 	 && code != SSA_NAME
-	 && code != CALL_EXPR
 	 && code != LANG_TYPE
 	 && code != MODIFY_EXPR
 	 && code != INIT_EXPR

gcc/tree-streamer-in.c

@@ -158,6 +158,11 @@ unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
       bp_unpack_value (bp, 8);
     }
+  else if (TREE_CODE (expr) == CALL_EXPR)
+    {
+      CALL_EXPR_BY_DESCRIPTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
+      bp_unpack_value (bp, 8);
+    }
   else
     bp_unpack_value (bp, 9);
 }
@@ -521,6 +526,8 @@ streamer_read_tree_bitfields (struct lto_input_block *ib,
 	    MR_DEPENDENCE_BASE (expr)
 	      = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 	}
+      else if (code == CALL_EXPR)
+	CALL_EXPR_IFN (expr) = bp_unpack_enum (&bp, internal_fn, IFN_LAST);
     }
 
   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))

gcc/tree-streamer-out.c

@@ -129,6 +129,11 @@ pack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
       bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1);
       bp_pack_value (bp, 0, 8);
     }
+  else if (TREE_CODE (expr) == CALL_EXPR)
+    {
+      bp_pack_value (bp, CALL_EXPR_BY_DESCRIPTOR (expr), 1);
+      bp_pack_value (bp, 0, 8);
+    }
   else
     bp_pack_value (bp, 0, 9);
 }
@@ -457,6 +462,8 @@ streamer_write_tree_bitfields (struct output_block *ob, tree expr)
 	  if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 	    bp_pack_value (&bp, MR_DEPENDENCE_BASE (expr), sizeof (short) * 8);
 	}
+      else if (code == CALL_EXPR)
+	bp_pack_enum (&bp, internal_fn, IFN_LAST, CALL_EXPR_IFN (expr));
     }
 
   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))

gcc/tree.c

@@ -5347,13 +5347,6 @@ free_lang_data_in_one_sizepos (tree *expr_p)
   tree expr = *expr_p;
   if (CONTAINS_PLACEHOLDER_P (expr))
     *expr_p = build0 (PLACEHOLDER_EXPR, TREE_TYPE (expr));
-  /* ???  We have to reset all non-GIMPLE sizepos because those eventually
-     refer to trees we cannot stream.  See for example PR87229 which
-     shows an example with non-gimplified abstract origins in C++.
-     Note this should only happen for abstract copies so setting sizes
-     to NULL is OK (but we cannot easily assert this).  */
-  else if (expr && !is_gimple_val (expr))
-    *expr_p = NULL_TREE;
 }