Lower bitmanip intrinsics, assuming absence of BMI/SSE4.2 for now.

crosstest/test_bitmanip.h

Index: crosstest/test_bitmanip.h
diff --git a/crosstest/test_bitmanip.h b/crosstest/test_bitmanip.h
new file mode 100644
index 0000000000000000000000000000000000000000..7c4efdb4968e6747284516ce1650005dd120fe7d
--- /dev/null
+++ b/crosstest/test_bitmanip.h
@@ -0,0 +1,24 @@
+//===- subzero/crosstest/test_bitmanip.h - Test prototypes ---*- C++ -*----===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the function prototypes for cross testing bit
+// manipulation intrinsics.
+//
+//===----------------------------------------------------------------------===//
+
+#include "test_bitmanip.def"
+
+#define X(inst, type)                                                         \
+  type test_##inst(type a);                                                   \
+  type test_alloca_##inst(type a);                                            \
+  type test_const_##inst(type ignored);                                       \
+  type my_##inst(type a);
+
+FOR_ALL_BMI_OP_TYPES(X)
+#undef X