SIInsertWaits.cpp File Reference

Insert wait instructions for memory reads and writes. More...

#include "AMDGPU.h"
#include "AMDGPUSubtarget.h"
#include "SIInstrInfo.h"
#include "SIMachineFunctionInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"

Include dependency graph for SIInsertWaits.cpp:

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Functions
static void	increaseCounters (Counters &Dst, const Counters &Src)
	helper function for handleOperands

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Detailed Description

Insert wait instructions for memory reads and writes.

Memory reads and writes are issued asynchronously, so we need to insert S_WAITCNT instructions when we want to access any of their results or overwrite any register that's used asynchronously.

Definition in file SIInsertWaits.cpp.

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Function Documentation

static void increaseCounters	(	Counters &	Dst,
		const Counters &	Src
	)		[static]

helper function for handleOperands

Definition at line 308 of file SIInsertWaits.cpp.