diff --git a/gcc/testsuite/gcc.target/i386/pr122104.c b/gcc/testsuite/gcc.target/i386/pr122104.c
new file mode 100644
index 000000000000..be88933e3ec6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr122104.c
@@ -0,0 +1,12 @@
+/* PR tree-optimization/122104 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-widening_mul-alias" } */
+/* { dg-final { scan-tree-dump "\\.MUL_OVERFLOW" "widening_mul" } } */
+/* { dg-final { scan-tree-dump-not "# RANGE \\\[irange\\\] unsigned int \\\[1, " "widening_mul" } } */
+
+int
+foo (int x)
+{
+  int r = (unsigned) x * 35;
+  return x && ((unsigned) r / x) != 35U;
+}
diff --git a/gcc/tree-ssa-math-opts.cc b/gcc/tree-ssa-math-opts.cc
index 1954c287c0ac..c3b2ac28e46e 100644
--- a/gcc/tree-ssa-math-opts.cc
+++ b/gcc/tree-ssa-math-opts.cc
@@ -3802,6 +3802,7 @@ maybe_optimize_guarding_check (vec<gimple *> &mul_stmts, gimple *cond_stmt,
   else
     gimple_cond_make_false (zero_cond);
   update_stmt (zero_cond);
+  reset_flow_sensitive_info_in_bb (bb);
   *cfg_changed = true;
 }