1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/asm-3.c b/gcc/testsuite/gcc.dg/tree-ssa/asm-3.c
new file mode 100644
index 000000000..5ed282e49
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/asm-3.c
@@ -0,0 +1,36 @@
+/* PR 17739 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+#ifdef __hppa__
+#define REGISTER "1"
+#else
+#ifdef __moxie__
+#define REGISTER "8"
+#else
+#define REGISTER "0"
+#endif
+#endif
+
+static inline int source(void)
+{
+  register int hardreg __asm__(REGISTER);
+  asm("" : "=r"(hardreg));
+  return hardreg;
+}
+                                                                                
+void test(void)
+{
+  int t = source();
+  foo(t);
+  bar(t);
+}
+
+/* Hardreg should appear exactly 3 times -- declaration, asm stmt,
+   and copy out.  */
+/* { dg-final { scan-tree-dump-times "hardreg" 3 "optimized" } } */
+
+/* In particular, hardreg should *not* appear in the call to bar.  */
+/* { dg-final { scan-tree-dump-times "bar \[(\]t_.\[)\]" 1 "optimized" } } */
+
+/* { dg-final { cleanup-tree-dump "optimized" } } */