--- /dev/null
+//===-- llvm/CodeGen/MachineDebugInfo.h -------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by James M. Laskey and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Collect debug information for a module. This information should be in a
+// neutral form that can be used by different debugging schemes.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINEDEBUGINFO_H
+#define LLVM_CODEGEN_MACHINEDEBUGINFO_H
+
+#include <string>
+#include <map>
+#include <vector>
+
+namespace llvm {
+//===----------------------------------------------------------------------===//
+/// MachineDebugInfo - This class contains debug information specific to a
+/// module. Queries can be made by different debugging schemes and reformated
+/// for specific use.
+///
+class MachineDebugInfo {
+private:
+ // convenience types
+ typedef std::map<std::string, unsigned> StrIntMap;
+ typedef StrIntMap::iterator StrIntMapIter;
+
+ StrIntMap SourceMap; // Map of source file path to id
+ unsigned SourceCount; // Number of source files (used to
+ // generate id)
+
+public:
+ // Ctor.
+ MachineDebugInfo() : SourceMap(), SourceCount(0) {}
+
+ /// RecordSource - Register a source file with debug info. Returns an id.
+ ///
+ unsigned RecordSource(std::string fname, std::string dirname) {
+ // Compose a key
+ std::string path = dirname + "/" + fname;
+ // Check if the source file is already recorded
+ StrIntMapIter SMI = SourceMap.find(path);
+ // If already there return existing id
+ if (SMI != SourceMap.end()) return SMI->second;
+ // Bump up the count
+ ++SourceCount;
+ // Record the count
+ SourceMap[path] = SourceCount;
+ // Return id
+ return SourceCount;
+ }
+
+ /// getSourceFiles - Return a vector of files. Vector index + 1 equals id.
+ ///
+ std::vector<std::string> getSourceFiles() {
+ std::vector<std::string> Sources(SourceCount);
+
+ for (StrIntMapIter SMI = SourceMap.begin(), E = SourceMap.end(); SMI != E;
+ SMI++) {
+ unsigned Index = SMI->second - 1;
+ std::string Path = SMI->first;
+ Sources[Index] = Path;
+ }
+ return Sources;
+ }
+
+}; // End class MachineDebugInfo
+//===----------------------------------------------------------------------===//
+
+
+
+} // End llvm namespace
+
+#endif
#ifndef LLVM_CODEGEN_MACHINEFUNCTION_H
#define LLVM_CODEGEN_MACHINEFUNCTION_H
+#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Support/Annotation.h"
/// stored in the second element.
std::vector<std::pair<unsigned, unsigned> > LiveIns;
std::vector<unsigned> LiveOuts;
+
+ /// DebugInfo - Keep track of debug information for the function.
+ ///
+ MachineDebugInfo DebugInfo;
public:
MachineFunction(const Function *Fn, const TargetMachine &TM);
const MachineBasicBlock *getLastBlock() const {
return MBBNumbering.back();
}
+
+ /// getDebugInfo - Returns the DebugInfo.
+ MachineDebugInfo &getDebugInfo() {
+ return DebugInfo;
+ }
/// print - Print out the MachineFunction in a format suitable for debugging
/// to the specified stream.
// as output.
LOCATION,
+ // DEBUG_LOC - This node is used to represent source line information
+ // embedded in the code. It takes token chain as input, then a line number,
+ // then a column then a file id (provided by MachineDebugInfo. It produces
+ // a token chain as output.
+ DEBUG_LOC,
+
// BUILTIN_OP_END - This must be the last enum value in this list.
BUILTIN_OP_END,
};
MachineFunction::MachineFunction(const Function *F,
const TargetMachine &TM)
- : Annotation(MF_AID), Fn(F), Target(TM), UsedPhysRegs(0) {
+ : Annotation(MF_AID), Fn(F), Target(TM), UsedPhysRegs(0), DebugInfo() {
SSARegMapping = new SSARegMap();
MFInfo = 0;
FrameInfo = new MachineFrameInfo();
switch (TLI.getOperationAction(ISD::LOCATION, MVT::Other)) {
case TargetLowering::Promote:
default: assert(0 && "This action is not supported yet!");
- case TargetLowering::Expand:
- // If the target doesn't support line numbers, ignore this node.
- Result = Tmp1;
+ case TargetLowering::Expand: {
+ MachineDebugInfo &DebugInfo = DAG.getMachineFunction().getDebugInfo();
+ std::vector<SDOperand> Ops;
+ Ops.push_back(Tmp1); // chain
+ Ops.push_back(Node->getOperand(1)); // line #
+ Ops.push_back(Node->getOperand(2)); // col #
+ const std::string &fname = cast<StringSDNode>(Node->getOperand(3))->getValue();
+ const std::string &dirname=cast<StringSDNode>(Node->getOperand(4))->getValue();
+ unsigned id = DebugInfo.RecordSource(fname, dirname);
+ Ops.push_back(DAG.getConstant(id, MVT::i32)); // source file id
+ Result = DAG.getNode(ISD::DEBUG_LOC, MVT::Other, Ops);
+ }
break;
case TargetLowering::Legal:
if (Tmp1 != Node->getOperand(0) ||
break;
}
break;
+
+ case ISD::DEBUG_LOC:
+ assert(Node->getNumOperands() == 4 && "Invalid DEBUG_LOC node!");
+ switch (TLI.getOperationAction(ISD::DEBUG_LOC, MVT::Other)) {
+ case TargetLowering::Promote:
+ case TargetLowering::Expand:
+ default: assert(0 && "This action is not supported yet!");
+ case TargetLowering::Legal:
+ Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
+ Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the line #.
+ Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the col #.
+ Tmp4 = LegalizeOp(Node->getOperand(3)); // Legalize the source file id.
+
+ if (Tmp1 != Node->getOperand(0) ||
+ Tmp2 != Node->getOperand(1) ||
+ Tmp3 != Node->getOperand(2) ||
+ Tmp4 != Node->getOperand(3)) {
+ Result = DAG.getNode(ISD::DEBUG_LOC,MVT::Other, Tmp1, Tmp2, Tmp3, Tmp4);
+ }
+ break;
+ }
+ break;
case ISD::Constant:
// We know we don't need to expand constants here, constants only have one
// Debug info
case ISD::LOCATION: return "location";
+ case ISD::DEBUG_LOC: return "debug_loc";
case ISD::CONDCODE:
switch (cast<CondCodeSDNode>(this)->get()) {
if (ConstantStruct *CS =
dyn_cast<ConstantStruct>(cunit->getInitializer())) {
if (CS->getNumOperands() > 0) {
- Ops.push_back(DAG.getString(getStringValue(CS->getOperand(4))));
Ops.push_back(DAG.getString(getStringValue(CS->getOperand(3))));
+ Ops.push_back(DAG.getString(getStringValue(CS->getOperand(4))));
}
}
}
#include "llvm/Module.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/Support/Mangler.h"
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
SetupMachineFunction(MF);
O << "\n\n";
+
+ // Print out dwarf file info
+ MachineDebugInfo &DebugInfo = MF.getDebugInfo();
+ std::vector<std::string> Sources = DebugInfo.getSourceFiles();
+ for (unsigned i = 0, N = Sources.size(); i < N; i++) {
+ O << "\t; .file\t" << (i + 1) << "," << "\"" << Sources[i] << "\"" << "\n";
+ }
// Print out constants referenced by the function
EmitConstantPool(MF.getConstantPool());
[]>;
+//===----------------------------------------------------------------------===//
+// DWARF Pseudo Instructions
+//
+
+def DWARF_LOC : Pseudo<(ops i32imm:$line, i32imm:$col, i32imm:$file),
+ "; .loc $file, $line, $col",
+ [(dwarf_loc (i32 imm:$line), (i32 imm:$col),
+ (i32 imm:$file))]>;
+
//===----------------------------------------------------------------------===//
// PowerPC Instruction Patterns
//
string SelectFunc = fn;
list<SDNode> RootNodes = roots;
}
+
+//===----------------------------------------------------------------------===//
+// Dwarf support.
+//
+def SDT_dwarf_loc : SDTypeProfile<0, 3,
+ [SDTCisInt<0>, SDTCisInt<1>, SDTCisInt<2>]>;
+def dwarf_loc : SDNode<"ISD::DEBUG_LOC", SDT_dwarf_loc,[SDNPHasChain]>;
+
+
+
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