virtual_operand_live Class Reference

#include <tree-ssa-live.h>

Public Member Functions
	virtual_operand_live ()
	~virtual_operand_live ()
tree	get_live_in (basic_block bb)
tree	get_live_out (basic_block bb)
tree	get_live_on_edge (edge e)

Private Member Functions
void	init ()

Private Attributes
tree *	liveout

Detailed Description

On-demand virtual operand global live analysis.  There is at most
a single virtual operand live at a time, the following computes and
caches the virtual operand live at the exit of a basic block
supporting related live-in and live-on-edge queries.  It requires
up-to-date marked backedges.   

Constructor & Destructor Documentation

virtual_operand_live()

virtual_operand_live::virtual_operand_live ( )

inline

~virtual_operand_live()

virtual_operand_live::~virtual_operand_live ( )

inline

References free(), and liveout.

Member Function Documentation

get_live_in()

tree virtual_operand_live::get_live_in

(

basic_block

bb

)

Compute live-in of BB from cached live-out.   

References FOR_EACH_EDGE, get_live_out(), get_virtual_phi(), gimple_phi_result(), init(), livein, liveout, NULL_TREE, and basic_block_def::preds.

Referenced by get_live_out(), and statement_sink_location().

get_live_on_edge()

tree virtual_operand_live::get_live_on_edge ( edge e )

inline

References get_live_out().

get_live_out()

tree virtual_operand_live::get_live_out

(

basic_block

bb

)

Compute live-out of BB.   

References get_live_in(), gimple_vdef(), gimple_vuse(), gsi_end_p(), gsi_last_bb(), gsi_prev(), gsi_stmt(), basic_block_def::index, init(), liveout, and NULL_TREE.

Referenced by get_live_in(), and get_live_on_edge().

init()

void virtual_operand_live::init ( )

private

Virtual operand liveness analysis data init.   

References cfun, ENTRY_BLOCK, gimple_vop(), last_basic_block_for_fn, liveout, and ssa_default_def().

Referenced by get_live_in(), and get_live_out().

Field Documentation

liveout

tree* virtual_operand_live::liveout

private

Referenced by get_live_in(), get_live_out(), init(), and ~virtual_operand_live().

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The documentation for this class was generated from the following files:

• tree-ssa-live.h
• tree-ssa-live.cc