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Diffstat (limited to 'lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp')
-rw-r--r--lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp80
1 files changed, 40 insertions, 40 deletions
diff --git a/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp b/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
index 9a89b1354b..6071c8deaa 100644
--- a/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
+++ b/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
@@ -1,14 +1,14 @@
//===-- LiveRangeInfo.cpp -------------------------------------------------===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
-//
+//
// Live range construction for coloring-based register allocation for LLVM.
-//
+//
//===----------------------------------------------------------------------===//
#include "IGNode.h"
@@ -35,8 +35,8 @@ LiveRangeInfo::LiveRangeInfo(const Function *F, const TargetMachine &tm,
LiveRangeInfo::~LiveRangeInfo() {
- for (LiveRangeMapType::iterator MI = LiveRangeMap.begin();
- MI != LiveRangeMap.end(); ++MI) {
+ for (LiveRangeMapType::iterator MI = LiveRangeMap.begin();
+ MI != LiveRangeMap.end(); ++MI) {
if (MI->first && MI->second) {
LiveRange *LR = MI->second;
@@ -48,7 +48,7 @@ LiveRangeInfo::~LiveRangeInfo() {
for (LiveRange::iterator LI = LR->begin(); LI != LR->end(); ++LI)
LiveRangeMap[*LI] = 0;
-
+
delete LR;
}
}
@@ -70,14 +70,14 @@ void LiveRangeInfo::unionAndUpdateLRs(LiveRange *L1, LiveRange *L2) {
for(LiveRange::iterator L2It = L2->begin(); L2It != L2->end(); ++L2It) {
L1->insert(*L2It); // add the var in L2 to L1
- LiveRangeMap[*L2It] = L1; // now the elements in L2 should map
- //to L1
+ LiveRangeMap[*L2It] = L1; // now the elements in L2 should map
+ //to L1
}
-
+
// set call interference for L1 from L2
if (L2->isCallInterference())
L1->setCallInterference();
-
+
// add the spill costs
L1->addSpillCost(L2->getSpillCost());
@@ -90,7 +90,7 @@ void LiveRangeInfo::unionAndUpdateLRs(LiveRange *L1, LiveRange *L2) {
// must have the same color.
if (L2->hasSuggestedColor())
L1->setSuggestedColor(L2->getSuggestedColor());
-
+
delete L2; // delete L2 as it is no longer needed
}
@@ -103,7 +103,7 @@ void LiveRangeInfo::unionAndUpdateLRs(LiveRange *L1, LiveRange *L2) {
LiveRange*
LiveRangeInfo::createNewLiveRange(const Value* Def, bool isCC /* = false*/)
-{
+{
LiveRange* DefRange = new LiveRange(); // Create a new live range,
DefRange->insert(Def); // add Def to it,
LiveRangeMap[Def] = DefRange; // and update the map.
@@ -123,11 +123,11 @@ LiveRangeInfo::createNewLiveRange(const Value* Def, bool isCC /* = false*/)
LiveRange*
LiveRangeInfo::createOrAddToLiveRange(const Value* Def, bool isCC /* = false*/)
-{
+{
LiveRange *DefRange = LiveRangeMap[Def];
// check if the LR is already there (because of multiple defs)
- if (!DefRange) {
+ if (!DefRange) {
DefRange = createNewLiveRange(Def, isCC);
} else { // live range already exists
DefRange->insert(Def); // add the operand to the range
@@ -140,13 +140,13 @@ LiveRangeInfo::createOrAddToLiveRange(const Value* Def, bool isCC /* = false*/)
//---------------------------------------------------------------------------
-// Method for constructing all live ranges in a function. It creates live
+// Method for constructing all live ranges in a function. It creates live
// ranges for all values defined in the instruction stream. Also, it
// creates live ranges for all incoming arguments of the function.
//---------------------------------------------------------------------------
-void LiveRangeInfo::constructLiveRanges() {
+void LiveRangeInfo::constructLiveRanges() {
- if (DEBUG_RA >= RA_DEBUG_LiveRanges)
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
std::cerr << "Constructing Live Ranges ...\n";
// first find the live ranges for all incoming args of the function since
@@ -154,14 +154,14 @@ void LiveRangeInfo::constructLiveRanges() {
for (Function::const_arg_iterator AI = Meth->arg_begin(); AI != Meth->arg_end(); ++AI)
createNewLiveRange(AI, /*isCC*/ false);
- // Now suggest hardware registers for these function args
+ // Now suggest hardware registers for these function args
MRI.suggestRegs4MethodArgs(Meth, *this);
- // Now create LRs for machine instructions. A new LR will be created
+ // Now create LRs for machine instructions. A new LR will be created
// only for defs in the machine instr since, we assume that all Values are
// defined before they are used. However, there can be multiple defs for
// the same Value in machine instructions.
- //
+ //
// Also, find CALL and RETURN instructions, which need extra work.
//
MachineFunction &MF = MachineFunction::get(Meth);
@@ -170,21 +170,21 @@ void LiveRangeInfo::constructLiveRanges() {
// iterate over all the machine instructions in BB
for(MachineBasicBlock::iterator MInstIterator = MBB.begin();
- MInstIterator != MBB.end(); ++MInstIterator) {
- MachineInstr *MInst = MInstIterator;
+ MInstIterator != MBB.end(); ++MInstIterator) {
+ MachineInstr *MInst = MInstIterator;
// If the machine instruction is a call/return instruction, add it to
// CallRetInstrList for processing its args, ret value, and ret addr.
- //
+ //
if(TM.getInstrInfo()->isReturn(MInst->getOpcode()) ||
TM.getInstrInfo()->isCall(MInst->getOpcode()))
- CallRetInstrList.push_back(MInst);
-
+ CallRetInstrList.push_back(MInst);
+
// iterate over explicit MI operands and create a new LR
// for each operand that is defined by the instruction
for (MachineInstr::val_op_iterator OpI = MInst->begin(),
OpE = MInst->end(); OpI != OpE; ++OpI)
- if (OpI.isDef()) {
+ if (OpI.isDef()) {
const Value *Def = *OpI;
bool isCC = (OpI.getMachineOperand().getType()
== MachineOperand::MO_CCRegister);
@@ -201,7 +201,7 @@ void LiveRangeInfo::constructLiveRanges() {
// iterate over implicit MI operands and create a new LR
// for each operand that is defined by the instruction
- for (unsigned i = 0; i < MInst->getNumImplicitRefs(); ++i)
+ for (unsigned i = 0; i < MInst->getNumImplicitRefs(); ++i)
if (MInst->getImplicitOp(i).isDef()) {
const Value *Def = MInst->getImplicitRef(i);
LiveRange* LR = createOrAddToLiveRange(Def, /*isCC*/ false);
@@ -222,10 +222,10 @@ void LiveRangeInfo::constructLiveRanges() {
// Now we have to suggest clors for call and return arg live ranges.
// Also, if there are implicit defs (e.g., retun value of a call inst)
// they must be added to the live range list
- //
+ //
suggestRegs4CallRets();
- if( DEBUG_RA >= RA_DEBUG_LiveRanges)
+ if( DEBUG_RA >= RA_DEBUG_LiveRanges)
std::cerr << "Initial Live Ranges constructed!\n";
}
@@ -235,7 +235,7 @@ void LiveRangeInfo::constructLiveRanges() {
// (e.g., for outgoing call args), suggesting of colors for such live
// ranges is done using target specific function. Those functions are called
// from this function. The target specific methods must:
-// 1) suggest colors for call and return args.
+// 1) suggest colors for call and return args.
// 2) create new LRs for implicit defs in machine instructions
//---------------------------------------------------------------------------
void LiveRangeInfo::suggestRegs4CallRets() {
@@ -248,7 +248,7 @@ void LiveRangeInfo::suggestRegs4CallRets() {
MRI.suggestReg4RetValue(MInst, *this);
else if (TM.getInstrInfo()->isCall(OpCode))
MRI.suggestRegs4CallArgs(MInst, *this);
- else
+ else
assert( 0 && "Non call/ret instr in CallRetInstrList" );
}
}
@@ -268,7 +268,7 @@ void LiveRangeInfo::suggestRegs4CallRets() {
if the def and op do not interfere //i.e., not simultaneously live
if (degree(LR of def) + degree(LR of op)) <= # avail regs
if both LRs do not have suggested colors
- merge2IGNodes(def, op) // i.e., merge 2 LRs
+ merge2IGNodes(def, op) // i.e., merge 2 LRs
*/
//---------------------------------------------------------------------------
@@ -276,7 +276,7 @@ void LiveRangeInfo::suggestRegs4CallRets() {
// Checks if live range LR interferes with any node assigned or suggested to
// be assigned the specified color
-//
+//
inline bool InterferesWithColor(const LiveRange& LR, unsigned color) {
IGNode* lrNode = LR.getUserIGNode();
for (unsigned n=0, NN = lrNode->getNumOfNeighbors(); n < NN; n++) {
@@ -295,7 +295,7 @@ inline bool InterferesWithColor(const LiveRange& LR, unsigned color) {
// (but if the colors are the same, it is definitely safe to coalesce)
// (3) LR1 has color and LR2 interferes with any LR that has the same color
// (4) LR2 has color and LR1 interferes with any LR that has the same color
-//
+//
inline bool InterfsPreventCoalescing(const LiveRange& LROfDef,
const LiveRange& LROfUse) {
// (4) if they have different suggested colors, cannot coalesce
@@ -318,9 +318,9 @@ inline bool InterfsPreventCoalescing(const LiveRange& LROfDef,
}
-void LiveRangeInfo::coalesceLRs()
+void LiveRangeInfo::coalesceLRs()
{
- if(DEBUG_RA >= RA_DEBUG_LiveRanges)
+ if(DEBUG_RA >= RA_DEBUG_LiveRanges)
std::cerr << "\nCoalescing LRs ...\n";
MachineFunction &MF = MachineFunction::get(Meth);
@@ -364,7 +364,7 @@ void LiveRangeInfo::coalesceLRs()
if (!RCOfDef->getInterference(LROfDef, LROfUse) ) {
unsigned CombinedDegree =
- LROfDef->getUserIGNode()->getNumOfNeighbors() +
+ LROfDef->getUserIGNode()->getNumOfNeighbors() +
LROfUse->getUserIGNode()->getNumOfNeighbors();
if (CombinedDegree > RCOfDef->getNumOfAvailRegs()) {
@@ -390,7 +390,7 @@ void LiveRangeInfo::coalesceLRs()
} // for all machine instructions
} // for all BBs
- if (DEBUG_RA >= RA_DEBUG_LiveRanges)
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
std::cerr << "\nCoalescing Done!\n";
}
@@ -402,7 +402,7 @@ void LiveRangeInfo::printLiveRanges() {
std::cerr << "\nPrinting Live Ranges from Hash Map:\n";
for( ; HMI != LiveRangeMap.end(); ++HMI) {
if (HMI->first && HMI->second) {
- std::cerr << " Value* " << RAV(HMI->first) << "\t: ";
+ std::cerr << " Value* " << RAV(HMI->first) << "\t: ";
if (IGNode* igNode = HMI->second->getUserIGNode())
std::cerr << "LR# " << igNode->getIndex();
else
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-06-21 23:23:41 +0000