re PR tree-optimization/89278 (ICE in gimplify_modify_expr, at gimplify.c:5821)

	PR tree-optimization/89278
	* tree-loop-distribution.c: Include tree-eh.h.
	(generate_memset_builtin, generate_memcpy_builtin): Call
	rewrite_to_non_trapping_overflow on builtin->size before passing it
	to force_gimple_operand_gsi.

	* gcc.dg/pr89278.c: New test.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r268927

gcc/ChangeLog

+2019-02-15  Richard Biener  <rguenther@suse.de>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/89278
+	* tree-loop-distribution.c: Include tree-eh.h.
+	(generate_memset_builtin, generate_memcpy_builtin): Call
+	rewrite_to_non_trapping_overflow on builtin->size before passing it
+	to force_gimple_operand_gsi.
+
 2019-02-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR other/89342

gcc/testsuite/ChangeLog

+2019-02-15  Richard Biener  <rguenther@suse.de>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/89278
+	* gcc.dg/pr89278.c: New test.
+
 2019-02-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/89340

gcc/testsuite/gcc.dg/pr89278.c

+/* PR tree-optimization/89278 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -ftrapv -ftree-loop-distribute-patterns --param max-loop-header-insns=2" } */
+
+void
+foo (int *w, int x, int y, int z)
+{
+  while (x < y + z)
+    {
+      w[x] = 0;
+      ++x;
+    }
+}
+
+void
+bar (int *__restrict u, int *__restrict w, int x, int y, int z)
+{
+  while (x < y + z)
+    {
+      w[x] = u[x];
+      ++x;
+    }
+}

gcc/tree-loop-distribution.c

@@ -114,6 +114,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-scalar-evolution.h"
 #include "params.h"
 #include "tree-vectorizer.h"
+#include "tree-eh.h"
 
 
 #define MAX_DATAREFS_NUM \
@@ -996,7 +997,7 @@ generate_memset_builtin (struct loop *loop, partition *partition)
   /* The new statements will be placed before LOOP.  */
   gsi = gsi_last_bb (loop_preheader_edge (loop)->src);
 
-  nb_bytes = builtin->size;
+  nb_bytes = rewrite_to_non_trapping_overflow (builtin->size);
   nb_bytes = force_gimple_operand_gsi (&gsi, nb_bytes, true, NULL_TREE,
 				       false, GSI_CONTINUE_LINKING);
   mem = builtin->dst_base;
@@ -1048,7 +1049,7 @@ generate_memcpy_builtin (struct loop *loop, partition *partition)
   /* The new statements will be placed before LOOP.  */
   gsi = gsi_last_bb (loop_preheader_edge (loop)->src);
 
-  nb_bytes = builtin->size;
+  nb_bytes = rewrite_to_non_trapping_overflow (builtin->size);
   nb_bytes = force_gimple_operand_gsi (&gsi, nb_bytes, true, NULL_TREE,
 				       false, GSI_CONTINUE_LINKING);
   dest = builtin->dst_base;