re PR debug/49827 (sparc64-linux and cris-elf bootstrap failures due to ICE in…

re PR debug/49827 (sparc64-linux and cris-elf bootstrap failures due to ICE in dwarf2cfi.c connect_traces)

PR debug/49827
        * dwarf2cfi.c (create_trace_edges): Handle sequences properly.

From-SVN: r176728

gcc/ChangeLog

 2011-07-24  Richard Henderson  <rth@redhat.com>
 
+	PR debug/49827
+	* dwarf2cfi.c (create_trace_edges): Handle sequences properly.
+
+2011-07-24  Richard Henderson  <rth@redhat.com>
+
 	* dwarf2cfi.c (maybe_record_trace_start): Add abnormal parameter.
 	Zero args_size for abnormal edges.  Adjust all callers.
 

gcc/dwarf2cfi.c

@@ -2507,6 +2507,14 @@ create_trace_edges (rtx insn)
 	for (lab = nonlocal_goto_handler_labels; lab; lab = XEXP (lab, 1))
 	  maybe_record_trace_start (XEXP (lab, 0), insn, true);
     }
+  else if (GET_CODE (PATTERN (insn)) == SEQUENCE)
+    {
+      rtx seq = PATTERN (insn);
+      int i, n = XVECLEN (seq, 0);
+      for (i = 0; i < n; ++i)
+	create_trace_edges (XVECEXP (seq, 0, i));
+      return;
+    }
 
   /* Process EH edges.  */
   if (CALL_P (insn) || cfun->can_throw_non_call_exceptions)