SIFixSGPRLiveRanges.cpp File Reference

#include "AMDGPU.h"
#include "SIRegisterInfo.h"
#include "llvm/CodeGen/LiveIntervalAnalysis.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetMachine.h"

Include dependency graph for SIFixSGPRLiveRanges.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "si-fix-sgpr-live-ranges"
Functions
	INITIALIZE_PASS_BEGIN (SIFixSGPRLiveRanges, DEBUG_TYPE,"SI Fix SGPR Live Ranges", false, false) INITIALIZE_PASS_END(SIFixSGPRLiveRanges
Variables
	DEBUG_TYPE
SI Fix SGPR Live	Ranges
SI Fix SGPR Live	false

---

Detailed Description

SALU instructions ignore control flow, so we need to modify the live ranges of the registers they define.

The strategy is to view the entire program as if it were a single basic block and calculate the intervals accordingly. We implement this by walking this list of segments for each LiveRange and setting the end of each segment equal to the start of the segment that immediately follows it.

Definition in file SIFixSGPRLiveRanges.cpp.

---

Define Documentation

#define DEBUG_TYPE   "si-fix-sgpr-live-ranges"

Definition at line 30 of file SIFixSGPRLiveRanges.cpp.

---

Function Documentation

INITIALIZE_PASS_BEGIN	(	SIFixSGPRLiveRanges	,
		DEBUG_TYPE	,
		"SI Fix SGPR Live Ranges"	,
		false	,
		false
	)

---

Variable Documentation

DEBUG_TYPE

Definition at line 63 of file SIFixSGPRLiveRanges.cpp.

SI Fix SGPR Live false

Definition at line 63 of file SIFixSGPRLiveRanges.cpp.

SI Fix SGPR Live Ranges

Definition at line 63 of file SIFixSGPRLiveRanges.cpp.

Referenced by llvm::SelectionDAG::computeKnownBits(), llvm::FastISel::createMachineMemOperandFor(), llvm::DbgValueHistoryMap::endInstrRange(), llvm::SelectionDAG::getLoad(), llvm::DbgValueHistoryMap::getRegisterForVar(), llvm::yaml::Stream::printError(), llvm::yaml::Scanner::printError(), and llvm::DbgValueHistoryMap::startInstrRange().