optinsn_t Struct Reference

User defined callback to optimize individual microcode instructions. More...

#include <hexrays.hpp>

Public Member Functions
virtual	~optinsn_t ()
virtual int idaapi	func (mblock_t *blk, minsn_t *ins, int optflags)=0
	Optimize an instruction.

Detailed Description

User defined callback to optimize individual microcode instructions.

Constructor & Destructor Documentation

~optinsn_t()

virtual optinsn_t::~optinsn_t ( )

inlinevirtual

Member Function Documentation

func()

virtual int idaapi optinsn_t::func ( mblock_t * blk, minsn_t * ins, int optflags )

pure virtual

Optimize an instruction.

Parameters

blk	current basic block. maybe nullptr, which means that the instruction must be optimized without context
ins	instruction to optimize; it is always a top-level instruction. the callback may not delete the instruction but may convert it into nop (see mblock_t::make_nop). to optimize sub-instructions, visit them using minsn_visitor_t. sub-instructions may not be converted into nop but can be converted to "mov x,x". for example: add x,0,x => mov x,x this callback may change other instructions in the block, but should do this with care, e.g. to no break the propagation algorithm if called with OPTI_NO_LDXOPT.
optflags	combination of optimization flags bits

Returns

number of changes made to the instruction. if after this call the instruction's use/def lists have changed, you must mark the block level lists as dirty (see mark_lists_dirty)

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The documentation for this struct was generated from the following file:

• ida-sdk/src/include/hexrays.hpp