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Re: Is (set (subreg:SI (reg:HI) 0) (const_int)) valid rtx?
Hi Qinfeng,
> whether the rtx is valid depends on the target machine, and the
> phase that the rtx located in compiling progress.
I had "before register allocation" in mind and assumed a target
architecture allows (set (reg:SI) (const_int)). Given these, would
you also say that the validity depends on WORD_REGISTER_OPERATIONS as
Joern suggested?
Thanks,
Kazu Hirata