.text
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.text
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.global test_dot_req_and_unreq
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.global test_dot_req_and_unreq
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test_dot_req_and_unreq:
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test_dot_req_and_unreq:
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# Check that builtin register alias 'r0' works.
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# Check that builtin register alias 'r0' works.
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add r0, r0, r0
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add r0, r0, r0
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# Create an alias for r0.
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# Create an alias for r0.
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foo .req r0
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foo .req r0
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# Check that it works.
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# Check that it works.
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add foo, foo, foo
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add foo, foo, foo
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# Now remove the alias.
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# Now remove the alias.
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.unreq foo
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.unreq foo
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# And make sure that it no longer works.
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# And make sure that it no longer works.
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add foo, foo, foo
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add foo, foo, foo
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# Attempt to remove the builtin alias for r0.
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# Attempt to remove the builtin alias for r0.
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.unreq r0
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.unreq r0
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# That is ignored, so this should still work.
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# That is ignored, so this should still work.
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add r0, r0, r0
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add r0, r0, r0
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# Now attempt to re-alias foo. There used to be a bug whereby the
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# Now attempt to re-alias foo. There used to be a bug whereby the
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# first creation of an alias called foo would also create an alias
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# first creation of an alias called foo would also create an alias
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# called FOO, but the .unreq of foo would not delete FOO. Thus a
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# called FOO, but the .unreq of foo would not delete FOO. Thus a
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# second attempt at aliasing foo (to something different than
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# second attempt at aliasing foo (to something different than
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# before) would fail because the assembler would complain that FOO
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# before) would fail because the assembler would complain that FOO
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# already existed.
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# already existed.
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foo .req r1
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foo .req r1
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add foo, foo, foo
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add foo, foo, foo
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# Check that the upper case alias was also recreated.
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# Check that the upper case alias was also recreated.
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add FOO, FOO, FOO
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add FOO, FOO, FOO
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# Check that a second attempt to alias foo, using a mixed case
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# Check that a second attempt to alias foo, using a mixed case
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# verison of the name, will fail.
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# verison of the name, will fail.
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Foo .req r2
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Foo .req r2
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