1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr87746.c b/gcc/testsuite/gcc.dg/pr87746.c
new file mode 100644
index 00000000000..139651674e4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr87746.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-Ofast" } */
+/* { dg-additional-options "-mavx2" { target x86_64-*-* i?86-*-* } } */
+
+typedef struct rtx_def *rtx;
+struct replacement {
+    rtx *where;
+    rtx *subreg_loc;
+    int mode;
+};
+static struct replacement replacements[150];
+void move_replacements (rtx *x, rtx *y, int n_replacements)
+{
+  int i;
+  for (i = 0; i < n_replacements; i++)
+    if (replacements[i].subreg_loc == x)
+      replacements[i].subreg_loc = y;
+    else if (replacements[i].where == x) 
+      {
+	replacements[i].where = y;
+	replacements[i].subreg_loc = 0;
+      }
+}