mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-05 13:09:10 +00:00
Numerous bug fixes:
-- passing FP arguments to functions with more than 6 arguments -- passing FP arguments to varargs functions -- passing FP arguments to functions with no prototypes -- incorrect coloring for CC registers (both int and FP): interferences were being completely ignored for int CC and were considered but no spills were marked for fp CC! Also some code improvements: -- better interface to generating machine instr for common cases (many places still need to be updated to use this interface) -- annotations on MachineInstr to communicate information from one codegen phase to another (now used to pass information about CALL/JMPLCALL operands from selection to register allocation) -- all sizes and offests in class TargetData are uint64_t instead of uint git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2642 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
parent
f66723fc4b
commit
dabb41d93d
@ -13,6 +13,7 @@
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#include "llvm/CodeGen/RegisterAllocation.h"
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#include "llvm/CodeGen/PhyRegAlloc.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineInstrAnnot.h"
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#include "llvm/CodeGen/MachineCodeForMethod.h"
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#include "llvm/Analysis/LiveVar/FunctionLiveVarInfo.h"
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#include "llvm/Analysis/LoopInfo.h"
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@ -21,6 +22,7 @@
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#include "llvm/BasicBlock.h"
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#include "llvm/Function.h"
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#include "llvm/Type.h"
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#include "llvm/iOther.h"
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#include "llvm/CodeGen/RegAllocCommon.h"
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#include <iostream>
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#include <math.h>
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@ -248,7 +250,9 @@ void PhyRegAlloc::setCallInterferences(const MachineInstr *MInst,
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// of the call is live in this set - but it does not interfere with call
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// (i.e., we can allocate a volatile register to the return value)
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//
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if( const Value *RetVal = MRI.getCallInstRetVal( MInst )) {
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CallArgsDescriptor* argDesc = CallArgsDescriptor::get(MInst);
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if (const Value *RetVal = argDesc->getReturnValue()) {
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LiveRange *RetValLR = LRI.getLiveRangeForValue( RetVal );
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assert( RetValLR && "No LR for RetValue of call");
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RetValLR->clearCallInterference();
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@ -256,7 +260,7 @@ void PhyRegAlloc::setCallInterferences(const MachineInstr *MInst,
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// If the CALL is an indirect call, find the LR of the function pointer.
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// That has a call interference because it conflicts with outgoing args.
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if( const Value *AddrVal = MRI.getCallInstIndirectAddrVal( MInst )) {
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if( const Value *AddrVal = argDesc->getIndirectFuncPtr()) {
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LiveRange *AddrValLR = LRI.getLiveRangeForValue( AddrVal );
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assert( AddrValLR && "No LR for indirect addr val of call");
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AddrValLR->setCallInterference();
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@ -438,7 +442,7 @@ void PhyRegAlloc::addInterferencesForArgs() {
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// Utility functions used below
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//-----------------------------
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inline void
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PrependInstructions(std::deque<MachineInstr *> &IBef,
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PrependInstructions(vector<MachineInstr *> &IBef,
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MachineCodeForBasicBlock& MIVec,
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MachineCodeForBasicBlock::iterator& MII,
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const std::string& msg)
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@ -446,7 +450,7 @@ PrependInstructions(std::deque<MachineInstr *> &IBef,
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if (!IBef.empty())
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{
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MachineInstr* OrigMI = *MII;
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std::deque<MachineInstr *>::iterator AdIt;
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std::vector<MachineInstr *>::iterator AdIt;
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for (AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt)
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{
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if (DEBUG_RA) {
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@ -460,7 +464,7 @@ PrependInstructions(std::deque<MachineInstr *> &IBef,
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}
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inline void
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AppendInstructions(std::deque<MachineInstr *> &IAft,
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AppendInstructions(std::vector<MachineInstr *> &IAft,
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MachineCodeForBasicBlock& MIVec,
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MachineCodeForBasicBlock::iterator& MII,
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const std::string& msg)
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@ -468,7 +472,7 @@ AppendInstructions(std::deque<MachineInstr *> &IAft,
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if (!IAft.empty())
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{
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MachineInstr* OrigMI = *MII;
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std::deque<MachineInstr *>::iterator AdIt;
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std::vector<MachineInstr *>::iterator AdIt;
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for( AdIt = IAft.begin(); AdIt != IAft.end() ; ++AdIt )
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{
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if(DEBUG_RA) {
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@ -678,7 +682,8 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
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mcInfo.pushTempValue(TM, MRI.getSpilledRegSize(RegType) );
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MachineInstr *MIBef=NULL, *AdIMid=NULL, *MIAft=NULL;
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MachineInstr *MIBef=NULL, *MIAft=NULL;
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vector<MachineInstr*> AdIMid;
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int TmpRegU = getUsableUniRegAtMI(RC, RegType, MInst,&LVSetBef, MIBef, MIAft);
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@ -690,38 +695,41 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
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// and use the TmpReg as one operand of instruction
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// actual loading instruction
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AdIMid = MRI.cpMem2RegMI(MRI.getFramePointer(), SpillOff, TmpRegU,RegType);
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MRI.cpMem2RegMI(MRI.getFramePointer(), SpillOff, TmpRegU,RegType, AdIMid);
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AI.InstrnsBefore.insert(AI.InstrnsBefore.end(),
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AdIMid.begin(), AdIMid.end());
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if(MIBef)
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AI.InstrnsBefore.push_back(MIBef);
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AI.InstrnsBefore.push_back(AdIMid);
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if(MIAft)
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AI.InstrnsAfter.push_front(MIAft);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(), MIAft);
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} else { // if this is a Def
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// for a DEF, we have to store the value produced by this instruction
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// on the stack position allocated for this LR
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// actual storing instruction
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AdIMid = MRI.cpReg2MemMI(TmpRegU, MRI.getFramePointer(), SpillOff,RegType);
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MRI.cpReg2MemMI(TmpRegU, MRI.getFramePointer(), SpillOff,RegType, AdIMid);
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if (MIBef)
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AI.InstrnsBefore.push_back(MIBef);
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AI.InstrnsAfter.push_front(AdIMid);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(),
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AdIMid.begin(), AdIMid.end());
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if (MIAft)
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AI.InstrnsAfter.push_front(MIAft);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(), MIAft);
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} // if !DEF
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cerr << "\nFor Inst " << *MInst;
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cerr << " - SPILLED LR: "; printSet(*LR);
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cerr << "\n - Added Instructions:";
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if (MIBef) cerr << *MIBef;
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cerr << *AdIMid;
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for (vector<MachineInstr*>::const_iterator II=AdIMid.begin();
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II != AdIMid.end(); ++II)
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cerr << **II;
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if (MIAft) cerr << *MIAft;
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Op.setRegForValue(TmpRegU); // set the opearnd
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@ -759,8 +767,16 @@ int PhyRegAlloc::getUsableUniRegAtMI(RegClass *RC,
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int TmpOff = mcInfo.pushTempValue(TM, MRI.getSpilledRegSize(RegType) );
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RegU = getUniRegNotUsedByThisInst(RC, MInst);
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MIBef = MRI.cpReg2MemMI(RegU, MRI.getFramePointer(), TmpOff, RegType );
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MIAft = MRI.cpMem2RegMI(MRI.getFramePointer(), TmpOff, RegU, RegType );
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vector<MachineInstr*> mvec;
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MRI.cpReg2MemMI(RegU, MRI.getFramePointer(), TmpOff, RegType, mvec);
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assert(mvec.size() == 1 && "Need to return a vector here too");
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MIBef = * mvec.begin();
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MRI.cpMem2RegMI(MRI.getFramePointer(), TmpOff, RegU, RegType, mvec);
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assert(mvec.size() == 1 && "Need to return a vector here too");
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MIAft = * mvec.begin();
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}
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return RegU;
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@ -797,9 +813,8 @@ int PhyRegAlloc::getUnusedUniRegAtMI(RegClass *RC,
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// LR can be null if it is a const since a const
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// doesn't have a dominating def - see Assumptions above
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if( LRofLV )
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if( LRofLV->hasColor() )
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IsColorUsedArr[ LRofLV->getColor() ] = true;
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if( LRofLV && LRofLV->getRegClass() == RC && LRofLV->hasColor() )
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IsColorUsedArr[ LRofLV->getColor() ] = true;
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}
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// It is possible that one operand of this MInst was already spilled
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@ -921,13 +936,13 @@ void PhyRegAlloc::move2DelayedInstr(const MachineInstr *OrigMI,
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const MachineInstr *DelayedMI) {
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// "added after" instructions of the original instr
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std::deque<MachineInstr *> &OrigAft = AddedInstrMap[OrigMI].InstrnsAfter;
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std::vector<MachineInstr *> &OrigAft = AddedInstrMap[OrigMI].InstrnsAfter;
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// "added instructions" of the delayed instr
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AddedInstrns &DelayAdI = AddedInstrMap[DelayedMI];
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// "added after" instructions of the delayed instr
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std::deque<MachineInstr *> &DelayedAft = DelayAdI.InstrnsAfter;
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std::vector<MachineInstr *> &DelayedAft = DelayAdI.InstrnsAfter;
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// go thru all the "added after instructions" of the original instruction
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// and append them to the "addded after instructions" of the delayed
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@ -210,6 +210,22 @@ void RegClass::colorIGNode(IGNode *const Node)
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IsColorUsedArr[ (*ReservedColorList)[i] ] = true;
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}
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// initialize all colors used by neighbors of this node to true
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LiveRange *LR = Node->getParentLR();
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unsigned NumNeighbors = Node->getNumOfNeighbors();
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for (unsigned n=0; n < NumNeighbors; n++) {
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IGNode *NeighIGNode = Node->getAdjIGNode(n);
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LiveRange *NeighLR = NeighIGNode->getParentLR();
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if (NeighLR->hasColor()) { // if has a color
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IsColorUsedArr[NeighLR->getColor()] = true; // mark color as used
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} else if (NeighLR->hasSuggestedColor() &&
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NeighLR->isSuggestedColorUsable()) {
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// this color is suggested for the neighbour, so don't use it
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IsColorUsedArr[NeighLR->getSuggestedColor()] = true;
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}
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}
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// call the target specific code for coloring
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//
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MRC->colorIGNode(Node, IsColorUsedArr);
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@ -13,6 +13,7 @@
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#include "llvm/CodeGen/RegisterAllocation.h"
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#include "llvm/CodeGen/PhyRegAlloc.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineInstrAnnot.h"
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#include "llvm/CodeGen/MachineCodeForMethod.h"
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#include "llvm/Analysis/LiveVar/FunctionLiveVarInfo.h"
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#include "llvm/Analysis/LoopInfo.h"
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@ -21,6 +22,7 @@
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#include "llvm/BasicBlock.h"
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#include "llvm/Function.h"
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#include "llvm/Type.h"
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#include "llvm/iOther.h"
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#include "llvm/CodeGen/RegAllocCommon.h"
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#include <iostream>
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#include <math.h>
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@ -248,7 +250,9 @@ void PhyRegAlloc::setCallInterferences(const MachineInstr *MInst,
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// of the call is live in this set - but it does not interfere with call
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// (i.e., we can allocate a volatile register to the return value)
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//
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if( const Value *RetVal = MRI.getCallInstRetVal( MInst )) {
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CallArgsDescriptor* argDesc = CallArgsDescriptor::get(MInst);
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if (const Value *RetVal = argDesc->getReturnValue()) {
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LiveRange *RetValLR = LRI.getLiveRangeForValue( RetVal );
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assert( RetValLR && "No LR for RetValue of call");
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RetValLR->clearCallInterference();
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@ -256,7 +260,7 @@ void PhyRegAlloc::setCallInterferences(const MachineInstr *MInst,
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// If the CALL is an indirect call, find the LR of the function pointer.
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// That has a call interference because it conflicts with outgoing args.
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if( const Value *AddrVal = MRI.getCallInstIndirectAddrVal( MInst )) {
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if( const Value *AddrVal = argDesc->getIndirectFuncPtr()) {
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LiveRange *AddrValLR = LRI.getLiveRangeForValue( AddrVal );
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assert( AddrValLR && "No LR for indirect addr val of call");
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AddrValLR->setCallInterference();
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@ -438,7 +442,7 @@ void PhyRegAlloc::addInterferencesForArgs() {
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// Utility functions used below
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//-----------------------------
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inline void
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PrependInstructions(std::deque<MachineInstr *> &IBef,
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PrependInstructions(vector<MachineInstr *> &IBef,
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MachineCodeForBasicBlock& MIVec,
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MachineCodeForBasicBlock::iterator& MII,
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const std::string& msg)
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@ -446,7 +450,7 @@ PrependInstructions(std::deque<MachineInstr *> &IBef,
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if (!IBef.empty())
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{
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MachineInstr* OrigMI = *MII;
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std::deque<MachineInstr *>::iterator AdIt;
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std::vector<MachineInstr *>::iterator AdIt;
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for (AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt)
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{
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if (DEBUG_RA) {
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@ -460,7 +464,7 @@ PrependInstructions(std::deque<MachineInstr *> &IBef,
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}
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inline void
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AppendInstructions(std::deque<MachineInstr *> &IAft,
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AppendInstructions(std::vector<MachineInstr *> &IAft,
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MachineCodeForBasicBlock& MIVec,
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MachineCodeForBasicBlock::iterator& MII,
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const std::string& msg)
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@ -468,7 +472,7 @@ AppendInstructions(std::deque<MachineInstr *> &IAft,
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if (!IAft.empty())
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{
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MachineInstr* OrigMI = *MII;
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std::deque<MachineInstr *>::iterator AdIt;
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std::vector<MachineInstr *>::iterator AdIt;
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for( AdIt = IAft.begin(); AdIt != IAft.end() ; ++AdIt )
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{
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if(DEBUG_RA) {
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@ -678,7 +682,8 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
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mcInfo.pushTempValue(TM, MRI.getSpilledRegSize(RegType) );
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MachineInstr *MIBef=NULL, *AdIMid=NULL, *MIAft=NULL;
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MachineInstr *MIBef=NULL, *MIAft=NULL;
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vector<MachineInstr*> AdIMid;
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int TmpRegU = getUsableUniRegAtMI(RC, RegType, MInst,&LVSetBef, MIBef, MIAft);
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@ -690,38 +695,41 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
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// and use the TmpReg as one operand of instruction
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// actual loading instruction
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AdIMid = MRI.cpMem2RegMI(MRI.getFramePointer(), SpillOff, TmpRegU,RegType);
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MRI.cpMem2RegMI(MRI.getFramePointer(), SpillOff, TmpRegU,RegType, AdIMid);
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AI.InstrnsBefore.insert(AI.InstrnsBefore.end(),
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AdIMid.begin(), AdIMid.end());
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if(MIBef)
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AI.InstrnsBefore.push_back(MIBef);
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AI.InstrnsBefore.push_back(AdIMid);
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if(MIAft)
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AI.InstrnsAfter.push_front(MIAft);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(), MIAft);
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} else { // if this is a Def
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// for a DEF, we have to store the value produced by this instruction
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// on the stack position allocated for this LR
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// actual storing instruction
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AdIMid = MRI.cpReg2MemMI(TmpRegU, MRI.getFramePointer(), SpillOff,RegType);
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MRI.cpReg2MemMI(TmpRegU, MRI.getFramePointer(), SpillOff,RegType, AdIMid);
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if (MIBef)
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AI.InstrnsBefore.push_back(MIBef);
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AI.InstrnsAfter.push_front(AdIMid);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(),
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AdIMid.begin(), AdIMid.end());
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if (MIAft)
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AI.InstrnsAfter.push_front(MIAft);
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AI.InstrnsAfter.insert(AI.InstrnsAfter.begin(), MIAft);
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} // if !DEF
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cerr << "\nFor Inst " << *MInst;
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cerr << " - SPILLED LR: "; printSet(*LR);
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cerr << "\n - Added Instructions:";
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if (MIBef) cerr << *MIBef;
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cerr << *AdIMid;
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for (vector<MachineInstr*>::const_iterator II=AdIMid.begin();
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II != AdIMid.end(); ++II)
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cerr << **II;
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if (MIAft) cerr << *MIAft;
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Op.setRegForValue(TmpRegU); // set the opearnd
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@ -759,8 +767,16 @@ int PhyRegAlloc::getUsableUniRegAtMI(RegClass *RC,
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int TmpOff = mcInfo.pushTempValue(TM, MRI.getSpilledRegSize(RegType) );
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RegU = getUniRegNotUsedByThisInst(RC, MInst);
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MIBef = MRI.cpReg2MemMI(RegU, MRI.getFramePointer(), TmpOff, RegType );
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MIAft = MRI.cpMem2RegMI(MRI.getFramePointer(), TmpOff, RegU, RegType );
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vector<MachineInstr*> mvec;
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MRI.cpReg2MemMI(RegU, MRI.getFramePointer(), TmpOff, RegType, mvec);
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assert(mvec.size() == 1 && "Need to return a vector here too");
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MIBef = * mvec.begin();
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MRI.cpMem2RegMI(MRI.getFramePointer(), TmpOff, RegU, RegType, mvec);
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assert(mvec.size() == 1 && "Need to return a vector here too");
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MIAft = * mvec.begin();
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}
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return RegU;
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@ -797,9 +813,8 @@ int PhyRegAlloc::getUnusedUniRegAtMI(RegClass *RC,
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// LR can be null if it is a const since a const
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// doesn't have a dominating def - see Assumptions above
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if( LRofLV )
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if( LRofLV->hasColor() )
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IsColorUsedArr[ LRofLV->getColor() ] = true;
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if( LRofLV && LRofLV->getRegClass() == RC && LRofLV->hasColor() )
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IsColorUsedArr[ LRofLV->getColor() ] = true;
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}
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// It is possible that one operand of this MInst was already spilled
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@ -921,13 +936,13 @@ void PhyRegAlloc::move2DelayedInstr(const MachineInstr *OrigMI,
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const MachineInstr *DelayedMI) {
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// "added after" instructions of the original instr
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std::deque<MachineInstr *> &OrigAft = AddedInstrMap[OrigMI].InstrnsAfter;
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std::vector<MachineInstr *> &OrigAft = AddedInstrMap[OrigMI].InstrnsAfter;
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// "added instructions" of the delayed instr
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AddedInstrns &DelayAdI = AddedInstrMap[DelayedMI];
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// "added after" instructions of the delayed instr
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std::deque<MachineInstr *> &DelayedAft = DelayAdI.InstrnsAfter;
|
||||
std::vector<MachineInstr *> &DelayedAft = DelayAdI.InstrnsAfter;
|
||||
|
||||
// go thru all the "added after instructions" of the original instruction
|
||||
// and append them to the "addded after instructions" of the delayed
|
||||
|
||||
@ -210,6 +210,22 @@ void RegClass::colorIGNode(IGNode *const Node)
|
||||
IsColorUsedArr[ (*ReservedColorList)[i] ] = true;
|
||||
}
|
||||
|
||||
// initialize all colors used by neighbors of this node to true
|
||||
LiveRange *LR = Node->getParentLR();
|
||||
unsigned NumNeighbors = Node->getNumOfNeighbors();
|
||||
for (unsigned n=0; n < NumNeighbors; n++) {
|
||||
IGNode *NeighIGNode = Node->getAdjIGNode(n);
|
||||
LiveRange *NeighLR = NeighIGNode->getParentLR();
|
||||
|
||||
if (NeighLR->hasColor()) { // if has a color
|
||||
IsColorUsedArr[NeighLR->getColor()] = true; // mark color as used
|
||||
} else if (NeighLR->hasSuggestedColor() &&
|
||||
NeighLR->isSuggestedColorUsable()) {
|
||||
// this color is suggested for the neighbour, so don't use it
|
||||
IsColorUsedArr[NeighLR->getSuggestedColor()] = true;
|
||||
}
|
||||
}
|
||||
|
||||
// call the target specific code for coloring
|
||||
//
|
||||
MRC->colorIGNode(Node, IsColorUsedArr);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user