1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/20020531-1.c b/gcc/testsuite/gcc.target/i386/20020531-1.c
new file mode 100644
index 000000000..cd7cac347
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/20020531-1.c
@@ -0,0 +1,21 @@
+/* PR optimization/6842
+   This testcase caused ICE when trying to optimize V8QI subreg of VOIDmode
+   CONST_DOUBLE.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -mmmx" } */
+
+typedef char __v8qi __attribute__ ((vector_size (8)));
+extern void abort (void);
+extern void exit (int);
+
+void foo (void)
+{
+  unsigned long long a = 0x0102030405060708LL;
+  unsigned long long b = 0x1020304050607080LL;
+  unsigned long long c;
+
+  c = (unsigned long long) __builtin_ia32_paddusb ((__v8qi) a, (__v8qi) b);
+  __builtin_ia32_emms ();
+  if (c != 0x1122334455667788LL)
+    abort ();
+}