LLVM  3.7.0
Macros | Functions | Variables
MachineSink.cpp File Reference
#include "llvm/CodeGen/Passes.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SparseBitVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachinePostDominators.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
Include dependency graph for MachineSink.cpp:

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "machine-sink"
 

Functions

 STATISTIC (NumSunk,"Number of machine instructions sunk")
 
 STATISTIC (NumSplit,"Number of critical edges split")
 
 STATISTIC (NumCoalesces,"Number of copies coalesced")
 
 INITIALIZE_PASS_BEGIN (MachineSinking,"machine-sink","Machine code sinking", false, false) INITIALIZE_PASS_END(MachineSinking
 
static bool AvoidsSinking (MachineInstr *MI, MachineRegisterInfo *MRI)
 
static void collectDebugValues (MachineInstr *MI, SmallVectorImpl< MachineInstr * > &DbgValues)
 collectDebgValues - Scan instructions following MI and collect any matching DBG_VALUEs. More...
 

Variables

static cl::opt< boolSplitEdges ("machine-sink-split", cl::desc("Split critical edges during machine sinking"), cl::init(true), cl::Hidden)
 
static cl::opt< boolUseBlockFreqInfo ("machine-sink-bfi", cl::desc("Use block frequency info to find successors to sink"), cl::init(true), cl::Hidden)
 
machine sink
 When an instruction is found to only be used outside of the loop, this function moves it to the exit blocks and patches up SSA form as needed. More...
 
machine Machine code sinking
 
machine Machine code false
 

Macro Definition Documentation

#define DEBUG_TYPE   "machine-sink"

Definition at line 38 of file MachineSink.cpp.

Function Documentation

static bool AvoidsSinking ( MachineInstr MI,
MachineRegisterInfo MRI 
)
static
static void collectDebugValues ( MachineInstr MI,
SmallVectorImpl< MachineInstr * > &  DbgValues 
)
static
INITIALIZE_PASS_BEGIN ( MachineSinking  ,
"machine-sink ,
"Machine code sinking ,
false  ,
false   
)
STATISTIC ( NumSunk  ,
"Number of machine instructions sunk"   
)
STATISTIC ( NumSplit  ,
"Number of critical edges split  
)
STATISTIC ( NumCoalesces  ,
"Number of copies coalesced"   
)

Variable Documentation

machine Machine code false

Definition at line 154 of file MachineSink.cpp.

static bool sink

When an instruction is found to only be used outside of the loop, this function moves it to the exit blocks and patches up SSA form as needed.

This method is guaranteed to remove the original instruction from its position, and may either delete it or move it to outside of the loop.

Definition at line 154 of file MachineSink.cpp.

machine Machine code sinking

Definition at line 154 of file MachineSink.cpp.

cl::opt<bool> SplitEdges("machine-sink-split", cl::desc("Split critical edges during machine sinking"), cl::init(true), cl::Hidden)
static
cl::opt<bool> UseBlockFreqInfo("machine-sink-bfi", cl::desc("Use block frequency info to find successors to sink"), cl::init(true), cl::Hidden)
static