(if headers
`(%test-fixnum-and-headers ,value ,temp ,target ,not-p
',(canonicalize-headers headers))
`(%test-fixnum ,value ,temp ,target ,not-p)))
(immediates
(when headers
(if headers
`(%test-fixnum-and-headers ,value ,temp ,target ,not-p
',(canonicalize-headers headers))
`(%test-fixnum ,value ,temp ,target ,not-p)))
(immediates
(when headers