--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr93986.c	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,16 @@
+/* PR tree-optimization/93986 - ICE in decompose, at wide-int.h:984
+   { dg-do compile }
+   { dg-options "-O1 -foptimize-strlen -ftree-slp-vectorize" } */
+
+int dd (void);
+
+void ya (int cm)
+{
+  char s2[cm];
+
+  s2[cm-12] = s2[cm-11] = s2[cm-10] = s2[cm-9]
+    = s2[cm-8] = s2[cm-7] = s2[cm-6] = s2[cm-5] = ' ';
+
+  if (dd ())
+    __builtin_exit (0);
+}