re PR tree-optimization/87301 (ICE: verify_gimple failed (error: statement…

re PR tree-optimization/87301 (ICE: verify_gimple failed (error: statement marked for throw, but doesn't))

2018-09-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87301
	* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup): Properly
	clean EH info from leftover copy assignments.

	* gcc.dg/torture/pr87301.c: New testcase.

From-SVN: r264364

gcc/ChangeLog

+2018-09-17  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/87301
+	* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup): Properly
+	clean EH info from leftover copy assignments.
+
 2018-09-17  Martin Liska  <mliska@suse.cz>
 
 	PR gcov-profile/85871

gcc/testsuite/ChangeLog

+2018-09-17  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/87301
+	* gcc.dg/torture/pr87301.c: New testcase.
+
 2018-09-17  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/85954

gcc/testsuite/gcc.dg/torture/pr87301.c

+/* { dg-do compile } */
+/* { dg-additional-options "-Wno-div-by-zero" } */
+
+void
+bl (int *be)
+{
+  int lo;
+    {
+      int **ny;
+
+      if (*be == 0)
+	{
+	  int ***k8 = &ny;
+	  int uj = (__INTPTR_TYPE__)&lo;
+
+	  for (;;)
+	    if (***k8 == 0)
+	      {
+		uj = !!(1 / 0) ? !(lo = 0) : 0;
+		(void) uj;
+
+		if (*ny == 0)
+		  for (;;)
+		    if (***k8 == 0)
+		      {
+		      }
+
+		for (lo = 0; lo < 2; ++lo)
+		  {
+		  }
+	      }
+	}
+    }
+}

gcc/tree-ssa-sccvn.c

@@ -5461,7 +5461,10 @@ eliminate_dom_walker::eliminate_cleanup (bool region_p)
 		if (is_gimple_assign (stmt))
 		  {
 		    gimple_assign_set_rhs_from_tree (&gsi, sprime);
-		    update_stmt (gsi_stmt (gsi));
+		    stmt = gsi_stmt (gsi);
+		    update_stmt (stmt);
+		    if (maybe_clean_or_replace_eh_stmt (stmt, stmt))
+		      bitmap_set_bit (need_eh_cleanup, gimple_bb (stmt)->index);
 		    continue;
 		  }
 		else