stall and/or flush counter

[lcaimi]

Is there any counter available to see the number of stalls or flushes during the code execution?

[mortbopet]

Hi @lcaimi
Nope! no such counter is currently implemented. But i think it could be a good project for starting to get into Ripes development, or you could raise an issue as a feature request for it.
For inspiration, if looking at these two functions, one should be able to follow all the way from how the statistics are registerred inside the processor model, to them being displayed in the UI.

Ripes/src/processors/interface/ripesprocessor.h

Lines 208 to 217 in fe4b16e

	/**
	* @brief getInstructionsRetired
	* @returns the number of instructions which has retired (ie. executed and no longer in the pipeline).
	*/
	virtual long long getInstructionsRetired() const = 0;
	/**
	* @brief getCycleCount
	* @returns the number of cycles which has been executed.
	*/
	virtual long long getCycleCount() const = 0;

[lcaimi]

I saw that the StageInfo struct maintains the current state of each stage. I believe this information could be used to count stalls and flushes.

Ripes/src/processors/interface/ripesprocessor.h

Lines 19 to 29 in fe4b16e

	struct StageInfo {
	enum class State { None, Stalled, Flushed, WayHazard, Unused };
	AInt pc = 0;
	bool stage_valid = false;
	State state;
	QString namedState = "";
	bool operator==(const StageInfo& other) const {
	return this->pc == other.pc && this->stage_valid == other.stage_valid && this->state == other.state;
	}
	bool operator!=(const StageInfo& other) const { return !(*this == other); }
	};

I am not able to implement the functionality. I will create an issue for future implementation.

Thanks