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Rename ISD::LOCATION to ISD::DBG_STOPPOINT to better reflect its

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purpose, and give it a custom SDNode subclass so that it doesn't
need to have line number, column number, filename string, and
directory string, all existing as individual SDNodes to be the
operands.

This was the only user of ISD::STRING, StringSDNode, etc., so
remove those and some associated code.

This makes stop-points considerably easier to read in
-view-legalize-dags output, and reduces overhead (creating new
nodes and copying std::strings into them) on code containing
debugging information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52924 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-06-30 20:59:49 +00:00
parent db8d56b825
commit 7f460203b0
15 changed files with 94 additions and 79 deletions
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4
include/llvm/CodeGen/SelectionDAG.h
View File

@ -173,7 +173,6 @@ public:
//===--------------------------------------------------------------------===//
// Node creation methods.
//
SDOperand getString(const std::string &Val);
SDOperand getConstant(uint64_t Val, MVT VT, bool isTarget = false);
SDOperand getConstant(const APInt &Val, MVT VT, bool isTarget = false);
SDOperand getIntPtrConstant(uint64_t Val, bool isTarget = false);
@ -224,6 +223,8 @@ public:
SDOperand getArgFlags(ISD::ArgFlagsTy Flags);
SDOperand getValueType(MVT);
SDOperand getRegister(unsigned Reg, MVT VT);
SDOperand getDbgStopPoint(SDOperand Root, unsigned Line, unsigned Col,
const CompileUnitDesc *CU);
SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) {
return getNode(ISD::CopyToReg, MVT::Other, Chain,
@ -635,7 +636,6 @@ private:
std::map<MVT, SDNode*, MVT::compareRawBits> ExtendedValueTypeNodes;
StringMap<SDNode*> ExternalSymbols;
StringMap<SDNode*> TargetExternalSymbols;
StringMap<StringSDNode*> StringNodes;
};
template <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> {

56
include/llvm/CodeGen/SelectionDAGNodes.h
View File

@ -37,6 +37,7 @@ class GlobalValue;
class MachineBasicBlock;
class MachineConstantPoolValue;
class SDNode;
class CompileUnitDesc;
template <typename T> struct DenseMapInfo;
template <typename T> struct simplify_type;
template <typename T> struct ilist_traits;
@ -82,7 +83,7 @@ namespace ISD {
AssertSext, AssertZext,
// Various leaf nodes.
STRING, BasicBlock, VALUETYPE, ARG_FLAGS, CONDCODE, Register,
BasicBlock, VALUETYPE, ARG_FLAGS, CONDCODE, Register,
Constant, ConstantFP,
GlobalAddress, GlobalTLSAddress, FrameIndex,
JumpTable, ConstantPool, ExternalSymbol,
@ -547,11 +548,11 @@ namespace ISD {
// HANDLENODE node - Used as a handle for various purposes.
HANDLENODE,
// LOCATION - This node is used to represent a source location for debug
// info. It takes token chain as input, then a line number, then a column
// number, then a filename, then a working dir. It produces a token chain
// as output.
LOCATION,
// DBG_STOPPOINT - This node is used to represent a source location for
// debug info. It takes token chain as input, and carries a line number,
// column number, and a pointer to a CompileUnitDesc object identifying
// the containing compilation unit. It produces a token chain as output.
DBG_STOPPOINT,
// DEBUG_LOC - This node is used to represent source line information
// embedded in the code. It takes a token chain as input, then a line
@ -1552,22 +1553,6 @@ class AtomicSDNode : public MemSDNode {
}
};
class StringSDNode : public SDNode {
std::string Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
explicit StringSDNode(const std::string &val)
: SDNode(ISD::STRING, getSDVTList(MVT::Other)), Value(val) {
}
public:
const std::string &getValue() const { return Value; }
static bool classof(const StringSDNode *) { return true; }
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::STRING;
}
};
class ConstantSDNode : public SDNode {
APInt Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
@ -1858,6 +1843,33 @@ public:
}
};
class DbgStopPointSDNode : public SDNode {
SDUse Chain;
unsigned Line;
unsigned Column;
const CompileUnitDesc *CU;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
DbgStopPointSDNode(SDOperand ch, unsigned l, unsigned c,
const CompileUnitDesc *cu)
: SDNode(ISD::DBG_STOPPOINT, getSDVTList(MVT::Other)),
Line(l), Column(c), CU(cu) {
Chain = ch;
InitOperands(&Chain, 1);
}
public:
unsigned getLine() const { return Line; }
unsigned getColumn() const { return Column; }
const CompileUnitDesc *getCompileUnit() const { return CU; }
static bool classof(const DbgStopPointSDNode *) { return true; }
static bool classof(const SDNode *N) {
return N->getOpcode() == ISD::DBG_STOPPOINT;
}
};
class ExternalSymbolSDNode : public SDNode {
const char *Symbol;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.

25
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -849,7 +849,6 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::VALUETYPE:
case ISD::SRCVALUE:
case ISD::MEMOPERAND:
case ISD::STRING:
case ISD::CONDCODE:
case ISD::ARG_FLAGS:
// Primitives must all be legal.
@ -1075,11 +1074,11 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
return Result.getValue(Op.ResNo);
}
case ISD::LOCATION:
assert(Node->getNumOperands() == 5 && "Invalid LOCATION node!");
case ISD::DBG_STOPPOINT:
assert(Node->getNumOperands() == 1 && "Invalid DBG_STOPPOINT node!");
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the input chain.
switch (TLI.getOperationAction(ISD::LOCATION, MVT::Other)) {
switch (TLI.getOperationAction(ISD::DBG_STOPPOINT, MVT::Other)) {
case TargetLowering::Promote:
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Expand: {
@ -1087,26 +1086,22 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
bool useDEBUG_LOC = TLI.isOperationLegal(ISD::DEBUG_LOC, MVT::Other);
bool useLABEL = TLI.isOperationLegal(ISD::LABEL, MVT::Other);
const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node);
if (MMI && (useDEBUG_LOC || useLABEL)) {
const std::string &FName =
cast<StringSDNode>(Node->getOperand(3))->getValue();
const std::string &DirName =
cast<StringSDNode>(Node->getOperand(4))->getValue();
unsigned SrcFile = MMI->RecordSource(DirName, FName);
const CompileUnitDesc *CompileUnit = DSP->getCompileUnit();
unsigned SrcFile = MMI->RecordSource(CompileUnit);
SmallVector<SDOperand, 8> Ops;
Ops.push_back(Tmp1); // chain
SDOperand LineOp = Node->getOperand(1);
SDOperand ColOp = Node->getOperand(2);
unsigned Line = DSP->getLine();
unsigned Col = DSP->getColumn();
if (useDEBUG_LOC) {
Ops.push_back(LineOp); // line #
Ops.push_back(ColOp); // col #
Ops.push_back(DAG.getConstant(Line, MVT::i32)); // line #
Ops.push_back(DAG.getConstant(Col, MVT::i32)); // col #
Ops.push_back(DAG.getConstant(SrcFile, MVT::i32)); // source file id
Result = DAG.getNode(ISD::DEBUG_LOC, MVT::Other, &Ops[0], Ops.size());
} else {
unsigned Line = cast<ConstantSDNode>(LineOp)->getValue();
unsigned Col = cast<ConstantSDNode>(ColOp)->getValue();
unsigned ID = MMI->RecordSourceLine(Line, Col, SrcFile);
Ops.push_back(DAG.getConstant(ID, MVT::i32));
Ops.push_back(DAG.getConstant(0, MVT::i32)); // a debug label

42
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -382,6 +382,13 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
case ISD::Register:
ID.AddInteger(cast<RegisterSDNode>(N)->getReg());
break;
case ISD::DBG_STOPPOINT: {
const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(N);
ID.AddInteger(DSP->getLine());
ID.AddInteger(DSP->getColumn());
ID.AddPointer(DSP->getCompileUnit());
break;
}
case ISD::SRCVALUE:
ID.AddPointer(cast<SrcValueSDNode>(N)->getValue());
break;
@ -575,9 +582,6 @@ void SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
bool Erased = false;
switch (N->getOpcode()) {
case ISD::HANDLENODE: return; // noop.
case ISD::STRING:
Erased = StringNodes.erase(cast<StringSDNode>(N)->getValue());
break;
case ISD::CONDCODE:
assert(CondCodeNodes[cast<CondCodeSDNode>(N)->get()] &&
"Cond code doesn't exist!");
@ -738,15 +742,6 @@ SDOperand SelectionDAG::getZeroExtendInReg(SDOperand Op, MVT VT) {
getConstant(Imm, Op.getValueType()));
}
SDOperand SelectionDAG::getString(const std::string &Val) {
StringSDNode *&N = StringNodes[Val];
if (!N) {
N = new StringSDNode(Val);
AllNodes.push_back(N);
}
return SDOperand(N, 0);
}
SDOperand SelectionDAG::getConstant(uint64_t Val, MVT VT, bool isT) {
MVT EltVT = VT.isVector() ? VT.getVectorElementType() : VT;
return getConstant(APInt(EltVT.getSizeInBits(), Val), VT, isT);
@ -1005,6 +1000,24 @@ SDOperand SelectionDAG::getRegister(unsigned RegNo, MVT VT) {
return SDOperand(N, 0);
}
SDOperand SelectionDAG::getDbgStopPoint(SDOperand Root,
unsigned Line, unsigned Col,
const CompileUnitDesc *CU) {
FoldingSetNodeID ID;
SDOperand Ops[] = { Root };
AddNodeIDNode(ID, ISD::DBG_STOPPOINT, getVTList(MVT::Other), &Ops[0], 1);
ID.AddInteger(Line);
ID.AddInteger(Col);
ID.AddPointer(CU);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
SDNode *N = new DbgStopPointSDNode(Root, Line, Col, CU);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDOperand(N, 0);
}
SDOperand SelectionDAG::getSrcValue(const Value *V) {
assert((!V || isa<PointerType>(V->getType())) &&
"SrcValue is not a pointer?");
@ -4178,7 +4191,6 @@ void UnarySDNode::ANCHOR() {}
void BinarySDNode::ANCHOR() {}
void TernarySDNode::ANCHOR() {}
void HandleSDNode::ANCHOR() {}
void StringSDNode::ANCHOR() {}
void ConstantSDNode::ANCHOR() {}
void ConstantFPSDNode::ANCHOR() {}
void GlobalAddressSDNode::ANCHOR() {}
@ -4189,6 +4201,7 @@ void BasicBlockSDNode::ANCHOR() {}
void SrcValueSDNode::ANCHOR() {}
void MemOperandSDNode::ANCHOR() {}
void RegisterSDNode::ANCHOR() {}
void DbgStopPointSDNode::ANCHOR() {}
void ExternalSymbolSDNode::ANCHOR() {}
void CondCodeSDNode::ANCHOR() {}
void ARG_FLAGSSDNode::ANCHOR() {}
@ -4463,7 +4476,6 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
case ISD::AssertSext: return "AssertSext";
case ISD::AssertZext: return "AssertZext";
case ISD::STRING: return "String";
case ISD::BasicBlock: return "BasicBlock";
case ISD::ARG_FLAGS: return "ArgFlags";
case ISD::VALUETYPE: return "ValueType";
@ -4624,7 +4636,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
case ISD::CTLZ: return "ctlz";
// Debug info
case ISD::LOCATION: return "location";
case ISD::DBG_STOPPOINT: return "dbg_stoppoint";
case ISD::DEBUG_LOC: return "debug_loc";
// Trampolines

16
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -3164,20 +3164,12 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
MachineModuleInfo *MMI = DAG.getMachineModuleInfo();
DbgStopPointInst &SPI = cast<DbgStopPointInst>(I);
if (MMI && SPI.getContext() && MMI->Verify(SPI.getContext())) {
SDOperand Ops[5];
Ops[0] = getRoot();
Ops[1] = getValue(SPI.getLineValue());
Ops[2] = getValue(SPI.getColumnValue());
DebugInfoDesc *DD = MMI->getDescFor(SPI.getContext());
assert(DD && "Not a debug information descriptor");
CompileUnitDesc *CompileUnit = cast<CompileUnitDesc>(DD);
Ops[3] = DAG.getString(CompileUnit->getFileName());
Ops[4] = DAG.getString(CompileUnit->getDirectory());
DAG.setRoot(DAG.getNode(ISD::LOCATION, MVT::Other, Ops, 5));
DAG.setRoot(DAG.getDbgStopPoint(getRoot(),
SPI.getLine(),
SPI.getColumn(),
cast<CompileUnitDesc>(DD)));
}
return 0;

8
lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
View File

@ -18,6 +18,7 @@
#include "llvm/CodeGen/ScheduleDAG.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineDebugInfoDesc.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/GraphWriter.h"
@ -138,6 +139,11 @@ std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
} else {
Op += " #" + utostr(R->getReg());
}
} else if (const DbgStopPointSDNode *D = dyn_cast<DbgStopPointSDNode>(Node)) {
Op += ": " + D->getCompileUnit()->getFileName();
Op += ":" + utostr(D->getLine());
if (D->getColumn() != 0)
Op += ":" + utostr(D->getColumn());
} else if (const ExternalSymbolSDNode *ES =
dyn_cast<ExternalSymbolSDNode>(Node)) {
Op += "'" + std::string(ES->getSymbol()) + "'";
@ -155,8 +161,6 @@ std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
Op = Op + " AF=" + N->getArgFlags().getArgFlagsString();
} else if (const VTSDNode *N = dyn_cast<VTSDNode>(Node)) {
Op = Op + " VT=" + N->getVT().getMVTString();
} else if (const StringSDNode *N = dyn_cast<StringSDNode>(Node)) {
Op = Op + "\"" + N->getValue() + "\"";
} else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(Node)) {
bool doExt = true;
switch (LD->getExtensionType()) {

2
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -188,7 +188,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
// Support label based line numbers.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::RET, MVT::Other, Custom);

2
lib/Target/Alpha/AlphaISelLowering.cpp
View File

@ -104,7 +104,7 @@ AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM) : TargetLowering(TM)
setOperationAction(ISD::BIT_CONVERT, MVT::f32, Promote);
// We don't have line number support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);

2
lib/Target/CellSPU/SPUISelLowering.cpp
View File

@ -290,7 +290,7 @@ SPUTargetLowering::SPUTargetLowering(SPUTargetMachine &TM)
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
// Support label based line numbers.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
// We want to legalize GlobalAddress and ConstantPool nodes into the

2
lib/Target/IA64/IA64ISelLowering.cpp
View File

@ -87,7 +87,7 @@ IA64TargetLowering::IA64TargetLowering(TargetMachine &TM)
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
// We don't have line number support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);

2
lib/Target/Mips/MipsISelLowering.cpp
View File

@ -95,7 +95,7 @@ MipsTargetLowering(MipsTargetMachine &TM): TargetLowering(TM)
setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
// We don't have line number support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);

2
lib/Target/PIC16/PIC16ISelLowering.cpp
View File

@ -133,7 +133,7 @@ PIC16TargetLowering(PIC16TargetMachine &TM): TargetLowering(TM)
setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
// We don't have line number support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);

2
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@ -164,7 +164,7 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
// Support label based line numbers.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand);

4
lib/Target/Sparc/SparcISelLowering.cpp
View File

@ -595,7 +595,7 @@ SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
// We don't have line number support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);
@ -615,7 +615,7 @@ SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
// No debug info support yet.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand);
setOperationAction(ISD::DECLARE, MVT::Other, Expand);

4
lib/Target/X86/X86ISelLowering.cpp
View File

@ -298,8 +298,8 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::ATOMIC_CMP_SWAP , MVT::i64, Custom);
setOperationAction(ISD::ATOMIC_LOAD_SUB , MVT::i32, Expand);
// Use the default ISD::LOCATION, ISD::DECLARE expansion.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
// Use the default ISD::DBG_STOPPOINT, ISD::DECLARE expansion.
setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
// FIXME - use subtarget debug flags
if (!Subtarget->isTargetDarwin() &&
!Subtarget->isTargetELF() &&