B::Bblock man page on MirBSD

B::Bblock man page on MirBSD

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ext::B::B::BblockPerl Programmers Reference ext::B::B::Bblock(3p)

NAME
     B::Bblock - Walk basic blocks

SYNOPSIS
       # External interface
       perl -MO=Bblock[,OPTIONS] foo.pl

       # Programmatic API
       use B::Bblock qw(find_leaders);
       my $leaders = find_leaders($root_op, $start_op);

DESCRIPTION
     This module is used by the B::CC back end.	 It walks "basic
     blocks". A basic block is a series of operations which is
     known to execute from start to finish, with no possibility
     of branching or halting.

     It can be used either stand alone or from inside another
     program.

     Functions

     find_leaders
	   my $leaders = find_leaders($root_op, $start_op);

	 Given the root of the op tree and an op from which to
	 start processing, it will return a hash ref representing
	 all the ops which start a block.

	 The values of %$leaders are the op objects themselves.
	 Keys are $$op addresses.

AUTHOR
     Malcolm Beattie, "mbeattie@sable.ox.ac.uk"

perl v5.8.8		   2005-02-05				1

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