This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: increase call_saved_regs[] in caller-save.c

> The only way I can think of to have two pseudos assigned the same
> hard reg at the same point in the insn stream is if the two pseudos
> are known to have the same value.

Since all we're doing is figuring out which hard regs need to be saved
in pro/epilogue, it could be that the two pseudos are not live at the
same time, despite being live in the same function.
Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]