diff --git a/gcc/testsuite/gcc.dg/pr52558-2.c b/gcc/testsuite/gcc.dg/pr52558-2.c
deleted file mode 100644
index 6d5f51c..0000000
--- a/gcc/testsuite/gcc.dg/pr52558-2.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/* { dg-do compile } */
-/* { dg-options "--param allow-store-data-races=0 -O2 -fdump-tree-lim1" } */
-
-/* Test that g_2 is not written to unless !g_1.  */
-
-int g_1 = 1;
-int g_2 = 0;
-
-int func_1(void)
-{
- int l;
- for (l = 0; l < 1234; l++)
- {
-   if (g_1)
-     return l;
-   else
-     g_2 = 0;
- }
- return 999;
-}
-
-/* { dg-final { scan-tree-dump-times "MEM.*g_2_lsm_flag" 1 "lim1" } } */
-/* { dg-final { cleanup-tree-dump "lim1" } } */
diff --git a/gcc/testsuite/gcc.dg/simulate-thread/speculative-store-3.c b/gcc/testsuite/gcc.dg/simulate-thread/speculative-store-3.c
new file mode 100644
index 0000000..203c026
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/simulate-thread/speculative-store-3.c
@@ -0,0 +1,71 @@
+/* { dg-do link } */
+/* { dg-options "--param allow-store-data-races=0 -O2" } */
+/* { dg-final { simulate-thread } } */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "simulate-thread.h"
+
+/* Test distilled from PR52558.  */
+
+int g_1 = 1;
+int g_2 = 0, insns = 0;
+int f;
+
+/* Test that g_2 is not written to unless !g_1.  */
+
+__attribute__((noinline))
+int funky()
+{
+  int l;
+  for (l = 0; l != 4; l++)
+    {
+      if (g_1)
+	{
+	  /* g_1 is globally true so we should always execute here,
+	     thus never writing to g_2 under any circumstance in this
+	     code path.  */
+	  return l;
+	}
+      for (g_2 = 0; g_2 >= 26; ++g_2)
+	;
+    }
+  return 999;
+}
+
+int simulate_thread_final_verify ()
+{
+  /* If g_2 != insns, someone must have cached `g_2' and stored a
+     racy value into it.  */
+  if (g_2 != insns)
+    {
+      printf("FAIL: g_2 was incorrectly cached\n");
+      return 1;
+    }
+  return 0;
+}
+
+void simulate_thread_other_threads ()
+{
+  ++insns;
+  ++g_2;
+}
+
+int simulate_thread_step_verify ()
+{
+  return 0;
+}
+
+__attribute__((noinline))
+void simulate_thread_main()
+{
+  f = funky();
+}
+
+int main()
+{
+  simulate_thread_main ();
+  simulate_thread_done ();
+  return 0;
+}