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tm.texi (LOCAL_REGNO): Document.

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* tm.texi (LOCAL_REGNO): Document.
        * flow.c (LOCAL_REGNO, EPILOGUE_USES): Provide default.
        (mark_regs_live_at_end): Don't mark LOCAL_REGNO registers.
        * reload1.c (reload): Likewise when considering nonlocal labels.

        * config/ia64/ia64.h (LOCAL_REGNO): New.
        * config/sparc/sparc.h (LOCAL_REGNO): New.
Last real change...

From-SVN: r35722
This commit is contained in:
Jeff Law 2000-08-15 09:33:23 -06:00
parent 6b72173af8
commit fa80e43d57
1 changed files with 8 additions and 0 deletions
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@ -1489,6 +1489,14 @@ corresponding to the register number @var{in} as seen by the called
function. Return @var{in} if register number @var{in} is not an inbound
register.
@findex LOCAL_REGNO
@item LOCAL_REGNO (@var{regno})
Define this macro if the target machine has register windows. This C
expression returns true if the register is call-saved but is in the
register window. Unlike most call-saved registers, such registers
need not be explicitly restored on function exit or during non-local
gotos.
@ignore
@findex PC_REGNUM
@item PC_REGNUM