re PR debug/90900 (ICE in copy_rtx, at rtl.c:376)

2019-06-18  Richard Biener  <rguenther@suse.de>

	PR debug/90900
	* cfgexpand.c (expand_debug_expr): Treat NOTE_P DECL_RTL
	as if optimized away.

	* gcc.dg/gomp/pr90900.c: New testcase.

From-SVN: r272421

gcc/ChangeLog

+2019-06-18  Richard Biener  <rguenther@suse.de>
+
+	PR debug/90900
+	* cfgexpand.c (expand_debug_expr): Treat NOTE_P DECL_RTL
+	as if optimized away.
+
 2019-06-18  Tom de Vries  <tdevries@suse.de>
 
 	* config/nvptx/nvptx-protos.h (gen_set_softstack_insn): Remove.

gcc/cfgexpand.c

@@ -4387,7 +4387,11 @@ expand_debug_expr (tree exp)
       op0 = DECL_RTL_IF_SET (exp);
 
       /* This decl was probably optimized away.  */
-      if (!op0)
+      if (!op0
+	  /* At least label RTXen are sometimes replaced by
+	     NOTE_INSN_DELETED_LABEL.  Any notes here are not
+	     handled by copy_rtx.  */
+	  || NOTE_P (op0))
 	{
 	  if (!VAR_P (exp)
 	      || DECL_EXTERNAL (exp)

gcc/testsuite/ChangeLog

+2019-06-18  Richard Biener  <rguenther@suse.de>
+
+	PR debug/90900
+	* gcc.dg/gomp/pr90900.c: New testcase.
+
 2019-06-18  Martin Sebor  <msebor@redhat.com>
 
 	* gcc.dg/pr90866-2.c: Remove a pointless declaration

gcc/testsuite/gcc.dg/gomp/pr90900.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fopenmp -g" } */
+
+void f (int a)
+{
+  void *x = &&lab;
+#pragma omp parallel
+  if (a)
+    { lab: __builtin_unreachable(); }
+  x;
+}