AddTreeState Class Reference

Structure for sorting out pointer expression trees. More...

#include <ruleaction.hh>

Public Member Functions
	AddTreeState (Funcdata &d, PcodeOp *op, int4 slot)
	Construct given root of ADD tree and pointer.
bool	apply (void)
	Attempt to transform the pointer expression. More...

Detailed Description

Structure for sorting out pointer expression trees.

Given a base pointer of known data-type and an additive expression involving the pointer, group the terms of the expression into:

• A constant multiple of the base data-type
• Non-constant multiples of the base data-type
• An constant offset to a sub-component of the base data-type
• An remaining terms

The multiple terms are rewritten using a CPUI_PTRADD. The constant offset is rewritten using a CPUI_PTRSUB. Other terms are added back in. Analysis may cause multiplication (CPUI_INT_MULT) by a constant to be distributed to its CPUI_INT_ADD input.

Member Function Documentation

apply()

bool AddTreeState::apply

(

void

)

Attempt to transform the pointer expression.

Returns

true if a transform was applied

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

• ruleaction.hh
• ruleaction.cc