[gcc r16-6794] testsuite: Add testcase for already fixed PR [PR120322]

[Jakub Jelinek]

https://gcc.gnu.org/g:b12d834aab36fc7fafa15fc1ad00f5b0bc80bd3d

commit r16-6794-gb12d834aab36fc7fafa15fc1ad00f5b0bc80bd3d
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Jan 15 07:46:24 2026 +0100

    testsuite: Add testcase for already fixed PR [PR120322]
    
    This testcase started to be miscompiled with r16-170 and got fixed
    again with r16-960.
    
    2026-01-15  Jakub Jelinek  <jakub@redhat.com>
    
            PR tree-optimization/120322
            * gcc.dg/torture/pr120322.c: New test.

Diff:
---
 gcc/testsuite/gcc.dg/torture/pr120322.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/torture/pr120322.c b/gcc/testsuite/gcc.dg/torture/pr120322.c
new file mode 100644
index 000000000000..8697c28c9ae3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr120322.c
@@ -0,0 +1,33 @@
+/* PR tree-optimization/120322 */
+/* { dg-do run } */
+/* { dg-additional-options "-fno-early-inlining" } */
+
+int a, b, c;
+
+void
+foo (int e)
+{
+  if (e > 0)
+    while (b)
+      ;
+}
+
+void
+bar (unsigned short e)
+{
+  foo (e);
+}
+
+static void
+baz (short e)
+{
+  bar (e);
+  c = a;
+}
+
+int
+main ()
+{
+  if (sizeof (int) > sizeof (short))
+    baz (-1);
+}