The iteration was stopping as soon as prev_var was set to NULL, and
therefore it skipped the first element. Fortunately, or unfortunately,
we have only one use of QTAILQ_FOREACH_REVERSE_SAFE. Thus this only
showed up as incorrect register preferences on the very first translation
block that was compiled.
Reported-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5ed76a4c63