target/sh4: move DELAY_SLOT_TRUE flag into a separate global
Instead of using one bit of the env flags to store the condition of the next delay slot, use a separate global. It simplifies reading and writing the flags variable and also removes some confusion between ctx->envflags and env->flags. Note that the global is first transfered to a temp in order to be able to discard the global before the brcond. Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
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