ext::B::B::BblockPerl Programmers Reference ext::B::B::Bblock(3p)NAMEB::Bblock - Walk basic blocks
SYNOPSIS
# External interface
perl -MO=Bblock[,OPTIONS] foo.pl
# Programmatic API
use B::Bblockqw(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