re PR tree-optimization/87898 (ICE in separate_decls_in_region_debug, at tree-parloops.c:961)

	PR tree-optimization/87898
	* omp-simd-clone.c (ipa_simd_modify_stmt_ops): Formatting fix.
	(ipa_simd_modify_function_body): Remove debug stmts where the first
	argument was changed into a non-decl.

	* gcc.dg/gomp/pr87898.c: New test.

From-SVN: r266093

gcc/ChangeLog

+2018-11-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/87898
+	* omp-simd-clone.c (ipa_simd_modify_stmt_ops): Formatting fix.
+	(ipa_simd_modify_function_body): Remove debug stmts where the first
+	argument was changed into a non-decl.
+
 2018-11-13  Peter Bergner  <bergner@linux.ibm.com>
 
 	PR rtl-optimization/87899

gcc/omp-simd-clone.c

@@ -834,11 +834,8 @@ ipa_simd_modify_stmt_ops (tree *tp, int *walk_subtrees, void *data)
   struct ipa_parm_adjustment *cand = NULL;
   if (TREE_CODE (*tp) == PARM_DECL)
     cand = ipa_get_adjustment_candidate (&tp, NULL, info->adjustments, true);
-  else
-    {
-      if (TYPE_P (*tp))
-	*walk_subtrees = 0;
-    }
+  else if (TYPE_P (*tp))
+    *walk_subtrees = 0;
 
   tree repl = NULL_TREE;
   if (cand)
@@ -1014,6 +1011,21 @@ ipa_simd_modify_function_body (struct cgraph_node *node,
 	  if (info.modified)
 	    {
 	      update_stmt (stmt);
+	      /* If the above changed the var of a debug bind into something
+		 different, remove the debug stmt.  We could also for all the
+		 replaced parameters add VAR_DECLs for debug info purposes,
+		 add debug stmts for those to be the simd array accesses and
+		 replace debug stmt var operand with that var.  Debugging of
+		 vectorized loops doesn't work too well, so don't bother for
+		 now.  */
+	      if ((gimple_debug_bind_p (stmt)
+		   && !DECL_P (gimple_debug_bind_get_var (stmt)))
+		  || (gimple_debug_source_bind_p (stmt)
+		      && !DECL_P (gimple_debug_source_bind_get_var (stmt))))
+		{
+		  gsi_remove (&gsi, true);
+		  continue;
+		}
 	      if (maybe_clean_eh_stmt (stmt))
 		gimple_purge_dead_eh_edges (gimple_bb (stmt));
 	    }

gcc/testsuite/ChangeLog

+2018-11-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/87898
+	* gcc.dg/gomp/pr87898.c: New test.
+
 2018-11-13  David Malcolm  <dmalcolm@redhat.com>
 
 	* g++.dg/plugin/comment_plugin.c: Replace "source_location" with

gcc/testsuite/gcc.dg/gomp/pr87898.c

+/* PR tree-optimization/87898 */
+/* { dg-do compile { target fgraphite } } */
+/* { dg-options "-O1 -floop-parallelize-all -fopenmp -ftree-parallelize-loops=2 -g" } */
+
+#pragma omp declare simd
+void
+foo (int x)
+{
+  x = 0;
+}