Unknown node

Functions
ir_node *	new_rd_Unknown (dbg_info *dbgi, ir_graph *irg, ir_mode *mode)
	Construct an Unknown node.
ir_node *	new_r_Unknown (ir_graph *irg, ir_mode *mode)
	Construct an Unknown node.
ir_node *	new_d_Unknown (dbg_info *dbgi, ir_mode *mode)
	Construct an Unknown node.
ir_node *	new_Unknown (ir_mode *mode)
	Construct an Unknown node.
int	is_Unknown (const ir_node *node)
	Test if node is a Unknown.
ir_op *	get_op_Unknown (void)
	Returns opcode for Unknown nodes.

Variables
ir_op *	op_Unknown
	Unknown opcode.

Detailed Description

Returns an unknown (at compile- and runtime) value. It is a valid optimization to replace an Unknown by any other constant value.

Be careful when optimising Unknown values, you cannot simply replace Unknown+x or Unknown<x with a new Unknown node if there are multiple users of the original unknown node!

Function Documentation

get_op_Unknown()

ir_op * get_op_Unknown

(

void

)

Returns opcode for Unknown nodes.

is_Unknown()

int is_Unknown

(

const ir_node *

node

)

Test if node is a Unknown.

Returns

1 if the node is a Unknown node, 0 otherwise

new_d_Unknown()

ir_node * new_d_Unknown	(	dbg_info *	dbgi,
		ir_mode *	mode )

Construct an Unknown node.

Parameters

dbgi	A pointer to debug information.
mode	mode of the operations result

new_r_Unknown()

ir_node * new_r_Unknown	(	ir_graph *	irg,
		ir_mode *	mode )

Construct an Unknown node.

Parameters

irg	The IR graph the node belongs to.
mode	mode of the operations result

new_rd_Unknown()

ir_node * new_rd_Unknown	(	dbg_info *	dbgi,
		ir_graph *	irg,
		ir_mode *	mode )

Construct an Unknown node.

Parameters

dbgi	A pointer to debug information.
irg	The IR graph the node belongs to.
mode	mode of the operations result

new_Unknown()

ir_node * new_Unknown

(

ir_mode *

mode

)

Construct an Unknown node.

Parameters

mode	mode of the operations result

Variable Documentation

op_Unknown

ir_op* op_Unknown

Unknown opcode.

Definition at line 4296 of file nodes.h.