diff --git a/llvm/__init__.py b/llvm/__init__.py
index c07aa9c..600b84c 100644
--- a/llvm/__init__.py
+++ b/llvm/__init__.py
@@ -42,6 +42,10 @@ def test(verbosity=3):
     from llvm.tests import run
 
     result = run(verbosity=verbosity)
+    errct = len(result.failures) + len(result.errors)
 
-    return len(result.failures) + len(result.errors)
+    # Dump some intrinsic usage result with MCJIT.
+    from llvm.utils import check_intrinsics
+    check_intrinsics.main()
 
+    return errct
diff --git a/llvm/utils/__init__.py b/llvm/utils/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/llvm/utils/check_intrinsics.py b/llvm/utils/check_intrinsics.py
new file mode 100644
index 0000000..702dae3
--- /dev/null
+++ b/llvm/utils/check_intrinsics.py
@@ -0,0 +1,181 @@
+from __future__ import print_function, absolute_import
+import sys
+from llvm.core import Type, Function, Builder, Module
+import llvm.core as lc
+import llvm.ee as le
+import multiprocessing
+from ctypes import *
+
+INTRINSICS = {}
+
+CTYPES_MAP = {
+    Type.int(): c_int32,
+    Type.int(64): c_int64,
+    Type.float(): c_float,
+    Type.double(): c_double,
+}
+
+
+def register(name, retty, *args):
+    def wrap(fn):
+        INTRINSICS[name] = (retty, args), fn
+        return fn
+    return wrap
+
+
+def intr_impl(intrcode, *types):
+    def impl(module, builder, args):
+        intr = Function.intrinsic(module, intrcode, types)
+        r = builder.call(intr, args)
+        return r
+    return impl
+
+
+register("llvm.powi.f64", Type.double(), Type.double(), Type.int())\
+        (intr_impl(lc.INTR_POWI, Type.double()))
+
+register("llvm.powi.f32", Type.float(), Type.float(), Type.int())\
+        (intr_impl(lc.INTR_POWI, Type.float()))
+
+register("llvm.pow.f64", Type.double(), Type.double(), Type.double())\
+        (intr_impl(lc.INTR_POW, Type.double()))
+
+register("llvm.pow.f32", Type.float(), Type.float(), Type.float())\
+        (intr_impl(lc.INTR_POW, Type.float()))
+
+register("llvm.sin.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_SIN, Type.double()))
+
+register("llvm.sin.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_SIN, Type.float()))
+
+register("llvm.cos.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_COS, Type.double()))
+
+register("llvm.cos.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_COS, Type.float()))
+
+register("llvm.log.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_LOG, Type.double()))
+
+register("llvm.log.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_LOG, Type.float()))
+
+register("llvm.log2.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_LOG2, Type.double()))
+
+register("llvm.log2.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_LOG2, Type.float()))
+
+register("llvm.log10.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_LOG10, Type.double()))
+
+register("llvm.log10.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_LOG10, Type.float()))
+
+register("llvm.sqrt.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_SQRT, Type.double()))
+
+register("llvm.sqrt.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_SQRT, Type.float()))
+
+register("llvm.exp.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_EXP, Type.double()))
+
+register("llvm.exp.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_EXP, Type.float()))
+
+register("llvm.exp2.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_EXP2, Type.double()))
+
+register("llvm.exp2.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_EXP2, Type.float()))
+
+register("llvm.fabs.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_FABS, Type.double()))
+
+register("llvm.fabs.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_FABS, Type.float()))
+
+register("llvm.floor.f64", Type.double(), Type.double())\
+        (intr_impl(lc.INTR_FLOOR, Type.double()))
+
+register("llvm.floor.f32", Type.float(), Type.float())\
+        (intr_impl(lc.INTR_FLOOR, Type.float()))
+
+
+def build_test(name):
+    (retty, args), impl = INTRINSICS[name]
+    module = Module.new("test.%s" % name)
+    fn = module.add_function(Type.function(retty, args), name="test_%s" % name)
+    builder = Builder.new(fn.append_basic_block(""))
+    retval = impl(module, builder, fn.args)
+    builder.ret(retval)
+    fn.verify()
+    module.verify()
+    return module, fn
+
+
+def run_test(name):
+    module, fn = build_test(name)
+    eb = le.EngineBuilder.new(module).mcjit(True)
+    engine = eb.create()
+    ptr = engine.get_pointer_to_function(fn)
+
+    argtys = fn.type.pointee.args
+    retty = fn.type.pointee.return_type
+    cargtys = [CTYPES_MAP[a] for a in argtys]
+    cretty = CTYPES_MAP[retty]
+    cfunc = CFUNCTYPE(cretty, *cargtys)(ptr)
+    args = [1] * len(cargtys)
+    cfunc(*args)
+
+
+def spawner(name):
+    print("Testing %s" % name)
+    proc = multiprocessing.Process(target=run_test, args=(name,))
+
+    print('-' * 80)
+    proc.start()
+    proc.join()
+
+    if proc.exitcode != 0:
+        print("FAILED")
+        ok = False
+    else:
+        print("PASSED")
+        ok = True
+    print('=' * 80)
+    print()
+
+    return ok
+
+USAGE = """
+Args: [name]
+
+name: intrinsic name to test
+
+If no name is given, test all intrinsics.
+
+"""
+
+
+def main(argv=()):
+    if len(argv) == 1:
+        intrname = argv[1]
+        spawner(intrname)
+    elif not argv:
+        failed = []
+        for name in sorted(INTRINSICS):
+            if not spawner(name):
+                failed.append(name)
+
+        print("Summary:")
+        for name in failed:
+            print("%s failed" % name)
+    else:
+        print(USAGE)
+
+
+if __name__ == '__main__':
+    main(argv=sys.argv[1:])