Subversion Repositories openrisc_2011-10-31

        .text

        .global test_dot_req_and_unreq

test_dot_req_and_unreq:

        # Check that builtin register alias 'r0' works.

        add r0, r0, r0

        # Create an alias for r0.

        foo .req r0

        # Check that it works.

        add foo, foo, foo

        # Now remove the alias.

        .unreq foo

        # And make sure that it no longer works.

        add foo, foo, foo

        # Attempt to remove the builtin alias for r0.

        .unreq r0

        # That is ignored, so this should still work.

        add r0, r0, r0

        # Now attempt to re-alias foo.  There used to be a bug whereby the

        # first creation of an alias called foo would also create an alias

        # called FOO, but the .unreq of foo would not delete FOO.  Thus a

        # second attempt at aliasing foo (to something different than

        # before) would fail because the assembler would complain that FOO

        # already existed.

        foo .req r1

        add foo, foo, foo

        # Check that the upper case alias was also recreated.

        add FOO, FOO, FOO

        # Check that a second attempt to alias foo, using a mixed case

        # verison of the name, will fail.

        Foo .req r2