mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-04-07 01:38:26 +00:00
First cut at supporting .debug_loc section.
This is used to track variable information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104649 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
parent
48aefe15d0
commit
c3f5f783a2
@ -315,6 +315,10 @@ namespace llvm {
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///
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virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
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/// getValue - Get MCSymbol.
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///
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const MCSymbol *getValue() const { return Label; }
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/// SizeOf - Determine size of label value in bytes.
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///
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virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
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@ -168,15 +168,18 @@ public:
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///
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class DbgVariable {
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DIVariable Var; // Variable Descriptor.
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DIE *TheDIE;
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DIE *TheDIE; // Variable DIE.
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unsigned DotDebugLocOffset; // Offset in DotDebugLocEntries.
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public:
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// AbsVar may be NULL.
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DbgVariable(DIVariable V) : Var(V), TheDIE(0) {}
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DbgVariable(DIVariable V) : Var(V), TheDIE(0), DotDebugLocOffset(~0U) {}
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// Accessors.
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DIVariable getVariable() const { return Var; }
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void setDIE(DIE *D) { TheDIE = D; }
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DIE *getDIE() const { return TheDIE; }
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void setDotDebugLocOffset(unsigned O) { DotDebugLocOffset = O; }
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unsigned getDotDebugLocOffset() const { return DotDebugLocOffset; }
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};
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//===----------------------------------------------------------------------===//
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@ -317,8 +320,8 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
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DwarfFrameSectionSym = DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
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DwarfStrSectionSym = TextSectionSym = 0;
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DwarfDebugRangeSectionSym = 0;
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FunctionBeginSym = 0;
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DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = 0;
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FunctionBeginSym = FunctionEndSym = 0;
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if (TimePassesIsEnabled) {
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NamedRegionTimer T(DbgTimerName, DWARFGroupName);
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beginModule(M);
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@ -1441,18 +1444,18 @@ DIE *DwarfDebug::constructLexicalScopeDIE(DbgScope *Scope) {
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DebugRangeSymbols.size() * Asm->getTargetData().getPointerSize());
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for (SmallVector<DbgRange, 4>::const_iterator RI = Ranges.begin(),
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RE = Ranges.end(); RI != RE; ++RI) {
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DebugRangeSymbols.push_back(LabelsBeforeInsn.lookup(RI->first));
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DebugRangeSymbols.push_back(LabelsAfterInsn.lookup(RI->second));
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DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
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DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
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}
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DebugRangeSymbols.push_back(NULL);
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DebugRangeSymbols.push_back(NULL);
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return ScopeDIE;
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}
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MCSymbol *Start = LabelsBeforeInsn.lookup(RI->first);
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MCSymbol *End = LabelsAfterInsn.lookup(RI->second);
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const MCSymbol *Start = getLabelBeforeInsn(RI->first);
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const MCSymbol *End = getLabelAfterInsn(RI->second);
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if (Start == 0 || End == 0) return 0;
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if (End == 0) return 0;
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assert(Start->isDefined() && "Invalid starting label for an inlined scope!");
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assert(End->isDefined() && "Invalid end label for an inlined scope!");
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@ -1477,10 +1480,10 @@ DIE *DwarfDebug::constructInlinedScopeDIE(DbgScope *Scope) {
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// For now, use first instruction range and emit low_pc/high_pc pair and
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// corresponding .debug_inlined section entry for this pair.
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SmallVector<DbgRange, 4>::const_iterator RI = Ranges.begin();
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MCSymbol *StartLabel = LabelsBeforeInsn.lookup(RI->first);
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MCSymbol *EndLabel = LabelsAfterInsn.lookup(RI->second);
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const MCSymbol *StartLabel = getLabelBeforeInsn(RI->first);
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const MCSymbol *EndLabel = getLabelAfterInsn(RI->second);
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if (StartLabel == 0 || EndLabel == 0) {
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if (StartLabel == FunctionBeginSym || EndLabel == 0) {
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assert (0 && "Unexpected Start and End labels for a inlined scope!");
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return 0;
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}
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@ -1573,61 +1576,76 @@ DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, DbgScope *Scope) {
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addType(VariableDie, VD.getType());
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}
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// Add variable address.
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if (!Scope->isAbstractScope()) {
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// Check if variable is described by DBG_VALUE instruction.
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DenseMap<const DbgVariable *, const MachineInstr *>::iterator DVI =
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DbgVariableToDbgInstMap.find(DV);
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if (DVI != DbgVariableToDbgInstMap.end()) {
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const MachineInstr *DVInsn = DVI->second;
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const MCSymbol *DVLabel = findVariableLabel(DV);
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bool updated = false;
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// FIXME : Handle getNumOperands != 3
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if (DVInsn->getNumOperands() == 3) {
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if (DVInsn->getOperand(0).isReg())
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updated = addRegisterAddress(VariableDie, DVLabel, DVInsn->getOperand(0));
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else if (DVInsn->getOperand(0).isImm())
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updated = addConstantValue(VariableDie, DVLabel, DVInsn->getOperand(0));
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else if (DVInsn->getOperand(0).isFPImm())
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updated = addConstantFPValue(VariableDie, DVLabel, DVInsn->getOperand(0));
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} else {
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MachineLocation Location = Asm->getDebugValueLocation(DVInsn);
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if (Location.getReg()) {
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addAddress(VariableDie, dwarf::DW_AT_location, Location);
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if (DVLabel)
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addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
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DVLabel);
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updated = true;
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}
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}
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if (!updated) {
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// If variableDie is not updated then DBG_VALUE instruction does not
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// have valid variable info.
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delete VariableDie;
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return NULL;
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}
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}
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else {
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MachineLocation Location;
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unsigned FrameReg;
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const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
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int FI = 0;
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if (findVariableFrameIndex(DV, &FI)) {
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int Offset = RI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
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Location.set(FrameReg, Offset);
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if (VD.hasComplexAddress())
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addComplexAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
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else if (VD.isBlockByrefVariable())
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addBlockByrefAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
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else
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addAddress(VariableDie, dwarf::DW_AT_location, Location);
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}
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}
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}
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if (Tag == dwarf::DW_TAG_formal_parameter && VD.getType().isArtificial())
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addUInt(VariableDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
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if (Scope->isAbstractScope()) {
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DV->setDIE(VariableDie);
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return VariableDie;
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}
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// Add variable address.
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unsigned Offset = DV->getDotDebugLocOffset();
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if (Offset != ~0U) {
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addLabel(VariableDie, dwarf::DW_AT_location, dwarf::DW_FORM_data4,
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Asm->GetTempSymbol("debug_loc", Offset));
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DV->setDIE(VariableDie);
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UseDotDebugLocEntry.insert(VariableDie);
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return VariableDie;
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}
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// Check if variable is described by a DBG_VALUE instruction.
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DenseMap<const DbgVariable *, const MachineInstr *>::iterator DVI =
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DbgVariableToDbgInstMap.find(DV);
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if (DVI != DbgVariableToDbgInstMap.end()) {
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const MachineInstr *DVInsn = DVI->second;
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const MCSymbol *DVLabel = findVariableLabel(DV);
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bool updated = false;
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// FIXME : Handle getNumOperands != 3
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if (DVInsn->getNumOperands() == 3) {
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if (DVInsn->getOperand(0).isReg())
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updated = addRegisterAddress(VariableDie, DVLabel, DVInsn->getOperand(0));
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else if (DVInsn->getOperand(0).isImm())
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updated = addConstantValue(VariableDie, DVLabel, DVInsn->getOperand(0));
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else if (DVInsn->getOperand(0).isFPImm())
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updated = addConstantFPValue(VariableDie, DVLabel, DVInsn->getOperand(0));
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} else {
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MachineLocation Location = Asm->getDebugValueLocation(DVInsn);
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if (Location.getReg()) {
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addAddress(VariableDie, dwarf::DW_AT_location, Location);
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if (DVLabel)
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addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
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DVLabel);
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updated = true;
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}
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}
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if (!updated) {
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// If variableDie is not updated then DBG_VALUE instruction does not
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// have valid variable info.
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delete VariableDie;
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return NULL;
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}
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DV->setDIE(VariableDie);
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return VariableDie;
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}
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// .. else use frame index, if available.
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MachineLocation Location;
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unsigned FrameReg;
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const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
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int FI = 0;
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if (findVariableFrameIndex(DV, &FI)) {
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int Offset = RI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
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Location.set(FrameReg, Offset);
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if (VD.hasComplexAddress())
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addComplexAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
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else if (VD.isBlockByrefVariable())
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addBlockByrefAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
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else
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addAddress(VariableDie, dwarf::DW_AT_location, Location);
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}
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DV->setDIE(VariableDie);
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return VariableDie;
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@ -2113,6 +2131,24 @@ DwarfDebug::collectVariableInfoFromMMITable(const MachineFunction * MF,
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}
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}
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/// isDbgValueInUndefinedReg - Return true if debug value, encoded by
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/// DBG_VALUE instruction, is in undefined reg.
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static bool isDbgValueInUndefinedReg(const MachineInstr *MI) {
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assert (MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
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if (MI->getOperand(0).isReg() && !MI->getOperand(0).getReg())
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return true;
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return false;
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}
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/// isDbgValueInDefinedReg - Return true if debug value, encoded by
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/// DBG_VALUE instruction, is in a defined reg.
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static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
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assert (MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
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if (MI->getOperand(0).isReg() && MI->getOperand(0).getReg())
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return true;
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return false;
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}
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/// collectVariableInfo - Populate DbgScope entries with variables' info.
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void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
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SmallPtrSet<const MDNode *, 16> Processed;
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@ -2127,24 +2163,31 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
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for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
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II != IE; ++II) {
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const MachineInstr *MInsn = II;
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if (!MInsn->isDebugValue())
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if (!MInsn->isDebugValue() || isDbgValueInUndefinedReg(MInsn))
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continue;
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// Ignore Undef values.
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if (MInsn->getOperand(0).isReg() && !MInsn->getOperand(0).getReg())
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continue;
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DbgValues.push_back(MInsn);
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}
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// This is a collection of DBV_VALUE instructions describing same variable.
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SmallVector<const MachineInstr *, 4> MultipleValues;
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for(SmallVector<const MachineInstr *, 8>::iterator I = DbgValues.begin(),
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E = DbgValues.end(); I != E; ++I) {
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const MachineInstr *MInsn = *I;
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MultipleValues.clear();
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if (isDbgValueInDefinedReg(MInsn))
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MultipleValues.push_back(MInsn);
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DIVariable DV(MInsn->getOperand(MInsn->getNumOperands() - 1).getMetadata());
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if (Processed.count(DV) != 0)
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continue;
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for (SmallVector<const MachineInstr *, 8>::iterator MI = I+1,
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ME = DbgValues.end(); MI != ME; ++MI) {
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const MDNode *Var =
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(*MI)->getOperand((*MI)->getNumOperands()-1).getMetadata();
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if (Var == DV && isDbgValueInDefinedReg(*MI))
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MultipleValues.push_back(*MI);
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}
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DbgScope *Scope = findDbgScope(MInsn);
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if (!Scope && DV.getTag() == dwarf::DW_TAG_arg_variable)
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Scope = CurrentFnDbgScope;
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@ -2154,16 +2197,45 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
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Processed.insert(DV);
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DbgVariable *RegVar = new DbgVariable(DV);
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DbgVariableToDbgInstMap[RegVar] = MInsn;
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Scope->addVariable(RegVar);
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if (DV.getTag() != dwarf::DW_TAG_arg_variable) {
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DbgValueStartMap[MInsn] = RegVar;
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DbgVariableLabelsMap[RegVar] = LabelsBeforeInsn.lookup(MInsn);
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DbgVariableLabelsMap[RegVar] = getLabelBeforeInsn(MInsn);
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}
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if (DbgVariable *AbsVar = findAbstractVariable(DV, MInsn->getDebugLoc())) {
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DbgVariableToDbgInstMap[AbsVar] = MInsn;
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VarToAbstractVarMap[RegVar] = AbsVar;
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}
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if (MultipleValues.size() <= 1) {
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DbgVariableToDbgInstMap[RegVar] = MInsn;
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continue;
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}
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// handle multiple DBG_VALUE instructions describing one variable.
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RegVar->setDotDebugLocOffset(DotDebugLocEntries.size());
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if (DotDebugLocEntries.empty())
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DotDebugLocEntries.push_back(DotDebugLocEntry());
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const MachineInstr *Current = MultipleValues.back();
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MultipleValues.pop_back();
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while (!MultipleValues.empty()) {
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const MachineInstr *Next = MultipleValues.back();
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MultipleValues.pop_back();
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DbgValueStartMap[Next] = RegVar;
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MachineLocation MLoc;
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MLoc.set(Current->getOperand(0).getReg(), 0);
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const MCSymbol *FLabel = getLabelBeforeInsn(Next);
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const MCSymbol *SLabel = getLabelBeforeInsn(Current);
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DotDebugLocEntries.push_back(DotDebugLocEntry(FLabel, SLabel, MLoc));
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Current = Next;
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if (MultipleValues.empty()) {
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// If Next is the last instruction then its value is valid
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// until the end of the funtion.
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MLoc.set(Next->getOperand(0).getReg(), 0);
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DotDebugLocEntries.
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push_back(DotDebugLocEntry(SLabel, FunctionEndSym, MLoc));
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}
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}
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DotDebugLocEntries.push_back(DotDebugLocEntry());
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}
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// Collect info for variables that were optimized out.
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@ -2178,26 +2250,45 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
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Scope->addVariable(new DbgVariable(DV));
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}
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}
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}
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/// getLabelBeforeInsn - Return Label preceding the instruction.
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const MCSymbol *DwarfDebug::getLabelBeforeInsn(const MachineInstr *MI) {
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DenseMap<const MachineInstr *, MCSymbol *>::iterator I =
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LabelsBeforeInsn.find(MI);
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if (I == LabelsBeforeInsn.end())
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// FunctionBeginSym always preceeds all the instruction in current function.
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return FunctionBeginSym;
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return I->second;
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}
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/// getLabelAfterInsn - Return Label immediately following the instruction.
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const MCSymbol *DwarfDebug::getLabelAfterInsn(const MachineInstr *MI) {
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DenseMap<const MachineInstr *, MCSymbol *>::iterator I =
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LabelsAfterInsn.find(MI);
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if (I == LabelsAfterInsn.end())
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return NULL;
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return I->second;
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}
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/// beginScope - Process beginning of a scope.
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void DwarfDebug::beginScope(const MachineInstr *MI) {
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// Check location.
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DebugLoc DL = MI->getDebugLoc();
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if (DL.isUnknown() && !UnknownLocations)
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if (DL.isUnknown() && !UnknownLocations) {
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if (MI->isDebugValue() && PrevLabel)
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LabelsBeforeInsn[MI] = PrevLabel;
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return;
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}
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bool LocalVar = false;
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if (MI->isDebugValue()) {
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assert (MI->getNumOperands() > 1 && "Invalid machine instruction!");
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DIVariable DV(MI->getOperand(MI->getNumOperands() - 1).getMetadata());
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if (!DV.Verify()) return;
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if (DV.getTag() != dwarf::DW_TAG_arg_variable)
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if (DV.getTag() != dwarf::DW_TAG_arg_variable
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&& !isDbgValueInUndefinedReg(MI))
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LocalVar = true;
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// Ignore Undef values.
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if (MI->getOperand(0).isReg() && !MI->getOperand(0).getReg())
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LocalVar = false;
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}
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MCSymbol *Label = NULL;
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@ -2224,7 +2315,7 @@ void DwarfDebug::beginScope(const MachineInstr *MI) {
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// If this instruction begins a scope then note down corresponding label
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// even if previous label is reused.
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if (InsnsBeginScopeSet.count(MI) != 0)
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if (Label && (InsnsBeginScopeSet.count(MI) != 0 || MI->isDebugValue()))
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LabelsBeforeInsn[MI] = Label;
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}
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@ -2544,12 +2635,14 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
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if (CurrentFnDbgScope) {
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// Define end label for subprogram.
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FunctionEndSym = Asm->GetTempSymbol("func_end",
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Asm->getFunctionNumber());
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// Assumes in correct section after the entry point.
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Asm->OutStreamer.EmitLabel(FunctionEndSym);
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collectVariableInfo(MF);
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// Define end label for subprogram.
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Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_end",
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Asm->getFunctionNumber()));
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// Get function line info.
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if (!Lines.empty()) {
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// Get section line info.
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@ -2790,6 +2883,9 @@ void DwarfDebug::EmitSectionLabels() {
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DwarfDebugRangeSectionSym = EmitSectionSym(Asm, TLOF.getDwarfRangesSection(),
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"debug_range");
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DwarfDebugLocSectionSym = EmitSectionSym(Asm, TLOF.getDwarfLocSection(),
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"section_debug_loc");
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TextSectionSym = EmitSectionSym(Asm, TLOF.getTextSection(), "text_begin");
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EmitSectionSym(Asm, TLOF.getDataSection());
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}
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@ -2841,6 +2937,14 @@ void DwarfDebug::emitDIE(DIE *Die) {
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4);
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break;
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}
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case dwarf::DW_AT_location: {
|
||||
if (UseDotDebugLocEntry.count(Die) != 0) {
|
||||
DIELabel *L = cast<DIELabel>(Values[i]);
|
||||
Asm->EmitLabelDifference(L->getValue(), DwarfDebugLocSectionSym, 4);
|
||||
} else
|
||||
Values[i]->EmitValue(Asm, Form);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
// Emit an attribute using the defined form.
|
||||
Values[i]->EmitValue(Asm, Form);
|
||||
@ -3356,7 +3460,38 @@ void DwarfDebug::emitDebugStr() {
|
||||
void DwarfDebug::emitDebugLoc() {
|
||||
// Start the dwarf loc section.
|
||||
Asm->OutStreamer.SwitchSection(
|
||||
Asm->getObjFileLowering().getDwarfLocSection());
|
||||
Asm->getObjFileLowering().getDwarfLocSection());
|
||||
unsigned char Size = Asm->getTargetData().getPointerSize();
|
||||
unsigned index = 0;
|
||||
bool needMarker = true;
|
||||
for (SmallVector<DotDebugLocEntry, 4>::iterator I = DotDebugLocEntries.begin(),
|
||||
E = DotDebugLocEntries.end(); I != E; ++I, ++index) {
|
||||
DotDebugLocEntry Entry = *I;
|
||||
if (needMarker) {
|
||||
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_loc", index));
|
||||
needMarker = false;
|
||||
}
|
||||
if (Entry.isEmpty()) {
|
||||
Asm->OutStreamer.EmitIntValue(0, Size, /*addrspace*/0);
|
||||
Asm->OutStreamer.EmitIntValue(0, Size, /*addrspace*/0);
|
||||
needMarker = true;
|
||||
} else {
|
||||
Asm->OutStreamer.EmitSymbolValue(Entry.Begin, Size, 0);
|
||||
Asm->OutStreamer.EmitSymbolValue(Entry.End, Size, 0);
|
||||
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
|
||||
unsigned Reg = RI->getDwarfRegNum(Entry.Loc.getReg(), false);
|
||||
if (Reg < 32) {
|
||||
Asm->OutStreamer.AddComment("Loc expr size");
|
||||
Asm->EmitInt16(1);
|
||||
Asm->EmitInt8(dwarf::DW_OP_reg0 + Reg);
|
||||
} else {
|
||||
Asm->OutStreamer.AddComment("Loc expr size");
|
||||
Asm->EmitInt16(1+MCAsmInfo::getULEB128Size(Reg));
|
||||
Asm->EmitInt8(dwarf::DW_OP_regx);
|
||||
Asm->EmitULEB128(Reg);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// EmitDebugARanges - Emit visible names into a debug aranges section.
|
||||
|
||||
@ -15,6 +15,7 @@
|
||||
#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
|
||||
|
||||
#include "llvm/CodeGen/AsmPrinter.h"
|
||||
#include "llvm/CodeGen/MachineLocation.h"
|
||||
#include "DIE.h"
|
||||
#include "llvm/ADT/DenseMap.h"
|
||||
#include "llvm/ADT/FoldingSet.h"
|
||||
@ -30,7 +31,6 @@ class DbgConcreteScope;
|
||||
class DbgScope;
|
||||
class DbgVariable;
|
||||
class MachineFrameInfo;
|
||||
class MachineLocation;
|
||||
class MachineModuleInfo;
|
||||
class MachineOperand;
|
||||
class MCAsmInfo;
|
||||
@ -181,6 +181,27 @@ class DwarfDebug {
|
||||
/// DbgVariableLabelsMap - Maps DbgVariable to corresponding MCSymbol.
|
||||
DenseMap<const DbgVariable *, const MCSymbol *> DbgVariableLabelsMap;
|
||||
|
||||
/// DotDebugLocEntry - This struct describes location entries emitted in
|
||||
/// .debug_loc section.
|
||||
typedef struct DotDebugLocEntry {
|
||||
const MCSymbol *Begin;
|
||||
const MCSymbol *End;
|
||||
MachineLocation Loc;
|
||||
DotDebugLocEntry() : Begin(0), End(0) {}
|
||||
DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E,
|
||||
MachineLocation &L) : Begin(B), End(E), Loc(L) {}
|
||||
/// Empty entries are also used as a trigger to emit temp label. Such
|
||||
/// labels are referenced is used to find debug_loc offset for a given DIE.
|
||||
bool isEmpty() { return Begin == 0 && End == 0; }
|
||||
} DotDebugLocEntry;
|
||||
|
||||
/// DotDebugLocEntries - Collection of DotDebugLocEntry.
|
||||
SmallVector<DotDebugLocEntry, 4> DotDebugLocEntries;
|
||||
|
||||
/// UseDotDebugLocEntry - DW_AT_location attributes for the DIEs in this set
|
||||
/// idetifies corresponding .debug_loc entry offset.
|
||||
SmallPtrSet<const DIE *, 4> UseDotDebugLocEntry;
|
||||
|
||||
/// VarToAbstractVarMap - Maps DbgVariable with corresponding Abstract
|
||||
/// DbgVariable, if any.
|
||||
DenseMap<const DbgVariable *, const DbgVariable *> VarToAbstractVarMap;
|
||||
@ -200,7 +221,7 @@ class DwarfDebug {
|
||||
|
||||
/// InlineInfo - Keep track of inlined functions and their location. This
|
||||
/// information is used to populate debug_inlined section.
|
||||
typedef std::pair<MCSymbol *, DIE *> InlineInfoLabels;
|
||||
typedef std::pair<const MCSymbol *, DIE *> InlineInfoLabels;
|
||||
DenseMap<const MDNode *, SmallVector<InlineInfoLabels, 4> > InlineInfo;
|
||||
SmallVector<const MDNode *, 4> InlinedSPNodes;
|
||||
|
||||
@ -234,8 +255,8 @@ class DwarfDebug {
|
||||
// section offsets and are created by EmitSectionLabels.
|
||||
MCSymbol *DwarfFrameSectionSym, *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
|
||||
MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
|
||||
|
||||
MCSymbol *FunctionBeginSym;
|
||||
MCSymbol *DwarfDebugLocSectionSym;
|
||||
MCSymbol *FunctionBeginSym, *FunctionEndSym;
|
||||
private:
|
||||
|
||||
/// getSourceDirectoryAndFileIds - Return the directory and file ids that
|
||||
@ -600,6 +621,12 @@ public:
|
||||
///
|
||||
void endFunction(const MachineFunction *MF);
|
||||
|
||||
/// getLabelBeforeInsn - Return Label preceding the instruction.
|
||||
const MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
|
||||
|
||||
/// getLabelAfterInsn - Return Label immediately following the instruction.
|
||||
const MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
|
||||
|
||||
/// beginScope - Process beginning of a scope.
|
||||
void beginScope(const MachineInstr *MI);
|
||||
|
||||
|
||||
239
test/DebugInfo/2010-05-25-DotDebugLoc.ll
Normal file
239
test/DebugInfo/2010-05-25-DotDebugLoc.ll
Normal file
@ -0,0 +1,239 @@
|
||||
; RUN: llc -O2 < %s | grep debug_loc13
|
||||
; Test to check .debug_loc support. This test case emits 14 debug_loc entries.
|
||||
|
||||
%0 = type { double }
|
||||
|
||||
define hidden %0 @__divsc3(float %a, float %b, float %c, float %d) nounwind readnone {
|
||||
entry:
|
||||
tail call void @llvm.dbg.value(metadata !{float %a}, i64 0, metadata !0)
|
||||
tail call void @llvm.dbg.value(metadata !{float %b}, i64 0, metadata !11)
|
||||
tail call void @llvm.dbg.value(metadata !{float %c}, i64 0, metadata !12)
|
||||
tail call void @llvm.dbg.value(metadata !{float %d}, i64 0, metadata !13)
|
||||
%0 = tail call float @fabsf(float %c) nounwind readnone, !dbg !19 ; <float> [#uses=1]
|
||||
%1 = tail call float @fabsf(float %d) nounwind readnone, !dbg !19 ; <float> [#uses=1]
|
||||
%2 = fcmp olt float %0, %1, !dbg !19 ; <i1> [#uses=1]
|
||||
br i1 %2, label %bb, label %bb1, !dbg !19
|
||||
|
||||
bb: ; preds = %entry
|
||||
%3 = fdiv float %c, %d, !dbg !20 ; <float> [#uses=3]
|
||||
tail call void @llvm.dbg.value(metadata !{float %3}, i64 0, metadata !16), !dbg !20
|
||||
%4 = fmul float %3, %c, !dbg !21 ; <float> [#uses=1]
|
||||
%5 = fadd float %4, %d, !dbg !21 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %5}, i64 0, metadata !14), !dbg !21
|
||||
%6 = fmul float %3, %a, !dbg !22 ; <float> [#uses=1]
|
||||
%7 = fadd float %6, %b, !dbg !22 ; <float> [#uses=1]
|
||||
%8 = fdiv float %7, %5, !dbg !22 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %8}, i64 0, metadata !17), !dbg !22
|
||||
%9 = fmul float %3, %b, !dbg !23 ; <float> [#uses=1]
|
||||
%10 = fsub float %9, %a, !dbg !23 ; <float> [#uses=1]
|
||||
%11 = fdiv float %10, %5, !dbg !23 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %11}, i64 0, metadata !18), !dbg !23
|
||||
br label %bb2, !dbg !23
|
||||
|
||||
bb1: ; preds = %entry
|
||||
%12 = fdiv float %d, %c, !dbg !24 ; <float> [#uses=3]
|
||||
tail call void @llvm.dbg.value(metadata !{float %12}, i64 0, metadata !16), !dbg !24
|
||||
%13 = fmul float %12, %d, !dbg !25 ; <float> [#uses=1]
|
||||
%14 = fadd float %13, %c, !dbg !25 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %14}, i64 0, metadata !14), !dbg !25
|
||||
%15 = fmul float %12, %b, !dbg !26 ; <float> [#uses=1]
|
||||
%16 = fadd float %15, %a, !dbg !26 ; <float> [#uses=1]
|
||||
%17 = fdiv float %16, %14, !dbg !26 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %17}, i64 0, metadata !17), !dbg !26
|
||||
%18 = fmul float %12, %a, !dbg !27 ; <float> [#uses=1]
|
||||
%19 = fsub float %b, %18, !dbg !27 ; <float> [#uses=1]
|
||||
%20 = fdiv float %19, %14, !dbg !27 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %20}, i64 0, metadata !18), !dbg !27
|
||||
br label %bb2, !dbg !27
|
||||
|
||||
bb2: ; preds = %bb1, %bb
|
||||
%y.0 = phi float [ %11, %bb ], [ %20, %bb1 ] ; <float> [#uses=5]
|
||||
%x.0 = phi float [ %8, %bb ], [ %17, %bb1 ] ; <float> [#uses=5]
|
||||
%21 = fcmp uno float %x.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
|
||||
%22 = fcmp uno float %y.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
|
||||
%or.cond = and i1 %21, %22 ; <i1> [#uses=1]
|
||||
br i1 %or.cond, label %bb4, label %bb46, !dbg !28
|
||||
|
||||
bb4: ; preds = %bb2
|
||||
%23 = fcmp une float %c, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
|
||||
%24 = fcmp une float %d, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
|
||||
%or.cond93 = or i1 %23, %24 ; <i1> [#uses=1]
|
||||
br i1 %or.cond93, label %bb9, label %bb6, !dbg !29
|
||||
|
||||
bb6: ; preds = %bb4
|
||||
%25 = fcmp uno float %a, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
|
||||
%26 = fcmp uno float %b, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
|
||||
%or.cond94 = and i1 %25, %26 ; <i1> [#uses=1]
|
||||
br i1 %or.cond94, label %bb9, label %bb8, !dbg !29
|
||||
|
||||
bb8: ; preds = %bb6
|
||||
%27 = tail call float @copysignf(float 0x7FF0000000000000, float %c) nounwind readnone, !dbg !30 ; <float> [#uses=2]
|
||||
%28 = fmul float %27, %a, !dbg !30 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %28}, i64 0, metadata !17), !dbg !30
|
||||
%29 = fmul float %27, %b, !dbg !31 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %29}, i64 0, metadata !18), !dbg !31
|
||||
br label %bb46, !dbg !31
|
||||
|
||||
bb9: ; preds = %bb6, %bb4
|
||||
%30 = fcmp ord float %a, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%31 = fsub float %a, %a, !dbg !32 ; <float> [#uses=3]
|
||||
%32 = fcmp uno float %31, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%33 = and i1 %30, %32, !dbg !32 ; <i1> [#uses=2]
|
||||
br i1 %33, label %bb14, label %bb11, !dbg !32
|
||||
|
||||
bb11: ; preds = %bb9
|
||||
%34 = fcmp ord float %b, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%35 = fsub float %b, %b, !dbg !32 ; <float> [#uses=1]
|
||||
%36 = fcmp uno float %35, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%37 = and i1 %34, %36, !dbg !32 ; <i1> [#uses=1]
|
||||
br i1 %37, label %bb14, label %bb27, !dbg !32
|
||||
|
||||
bb14: ; preds = %bb11, %bb9
|
||||
%38 = fsub float %c, %c, !dbg !32 ; <float> [#uses=1]
|
||||
%39 = fcmp ord float %38, 0.000000e+00 ; <i1> [#uses=1]
|
||||
br i1 %39, label %bb15, label %bb27, !dbg !32
|
||||
|
||||
bb15: ; preds = %bb14
|
||||
%40 = fsub float %d, %d, !dbg !32 ; <float> [#uses=1]
|
||||
%41 = fcmp ord float %40, 0.000000e+00 ; <i1> [#uses=1]
|
||||
br i1 %41, label %bb16, label %bb27, !dbg !32
|
||||
|
||||
bb16: ; preds = %bb15
|
||||
%iftmp.0.0 = select i1 %33, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
|
||||
%42 = tail call float @copysignf(float %iftmp.0.0, float %a) nounwind readnone, !dbg !33 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %42}, i64 0, metadata !0), !dbg !33
|
||||
%43 = fcmp ord float %b, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%44 = fsub float %b, %b, !dbg !34 ; <float> [#uses=1]
|
||||
%45 = fcmp uno float %44, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%46 = and i1 %43, %45, !dbg !34 ; <i1> [#uses=1]
|
||||
%iftmp.1.0 = select i1 %46, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
|
||||
%47 = tail call float @copysignf(float %iftmp.1.0, float %b) nounwind readnone, !dbg !34 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %47}, i64 0, metadata !11), !dbg !34
|
||||
%48 = fmul float %42, %c, !dbg !35 ; <float> [#uses=1]
|
||||
%49 = fmul float %47, %d, !dbg !35 ; <float> [#uses=1]
|
||||
%50 = fadd float %48, %49, !dbg !35 ; <float> [#uses=1]
|
||||
%51 = fmul float %50, 0x7FF0000000000000, !dbg !35 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %51}, i64 0, metadata !17), !dbg !35
|
||||
%52 = fmul float %47, %c, !dbg !36 ; <float> [#uses=1]
|
||||
%53 = fmul float %42, %d, !dbg !36 ; <float> [#uses=1]
|
||||
%54 = fsub float %52, %53, !dbg !36 ; <float> [#uses=1]
|
||||
%55 = fmul float %54, 0x7FF0000000000000, !dbg !36 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %55}, i64 0, metadata !18), !dbg !36
|
||||
br label %bb46, !dbg !36
|
||||
|
||||
bb27: ; preds = %bb15, %bb14, %bb11
|
||||
%56 = fcmp ord float %c, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%57 = fsub float %c, %c, !dbg !37 ; <float> [#uses=1]
|
||||
%58 = fcmp uno float %57, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%59 = and i1 %56, %58, !dbg !37 ; <i1> [#uses=2]
|
||||
br i1 %59, label %bb33, label %bb30, !dbg !37
|
||||
|
||||
bb30: ; preds = %bb27
|
||||
%60 = fcmp ord float %d, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%61 = fsub float %d, %d, !dbg !37 ; <float> [#uses=1]
|
||||
%62 = fcmp uno float %61, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%63 = and i1 %60, %62, !dbg !37 ; <i1> [#uses=1]
|
||||
%64 = fcmp ord float %31, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%or.cond95 = and i1 %63, %64 ; <i1> [#uses=1]
|
||||
br i1 %or.cond95, label %bb34, label %bb46, !dbg !37
|
||||
|
||||
bb33: ; preds = %bb27
|
||||
%.old = fcmp ord float %31, 0.000000e+00 ; <i1> [#uses=1]
|
||||
br i1 %.old, label %bb34, label %bb46, !dbg !37
|
||||
|
||||
bb34: ; preds = %bb33, %bb30
|
||||
%65 = fsub float %b, %b, !dbg !37 ; <float> [#uses=1]
|
||||
%66 = fcmp ord float %65, 0.000000e+00 ; <i1> [#uses=1]
|
||||
br i1 %66, label %bb35, label %bb46, !dbg !37
|
||||
|
||||
bb35: ; preds = %bb34
|
||||
%iftmp.2.0 = select i1 %59, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
|
||||
%67 = tail call float @copysignf(float %iftmp.2.0, float %c) nounwind readnone, !dbg !38 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %67}, i64 0, metadata !12), !dbg !38
|
||||
%68 = fcmp ord float %d, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%69 = fsub float %d, %d, !dbg !39 ; <float> [#uses=1]
|
||||
%70 = fcmp uno float %69, 0.000000e+00 ; <i1> [#uses=1]
|
||||
%71 = and i1 %68, %70, !dbg !39 ; <i1> [#uses=1]
|
||||
%iftmp.3.0 = select i1 %71, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
|
||||
%72 = tail call float @copysignf(float %iftmp.3.0, float %d) nounwind readnone, !dbg !39 ; <float> [#uses=2]
|
||||
tail call void @llvm.dbg.value(metadata !{float %72}, i64 0, metadata !13), !dbg !39
|
||||
%73 = fmul float %67, %a, !dbg !40 ; <float> [#uses=1]
|
||||
%74 = fmul float %72, %b, !dbg !40 ; <float> [#uses=1]
|
||||
%75 = fadd float %73, %74, !dbg !40 ; <float> [#uses=1]
|
||||
%76 = fmul float %75, 0.000000e+00, !dbg !40 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %76}, i64 0, metadata !17), !dbg !40
|
||||
%77 = fmul float %67, %b, !dbg !41 ; <float> [#uses=1]
|
||||
%78 = fmul float %72, %a, !dbg !41 ; <float> [#uses=1]
|
||||
%79 = fsub float %77, %78, !dbg !41 ; <float> [#uses=1]
|
||||
%80 = fmul float %79, 0.000000e+00, !dbg !41 ; <float> [#uses=1]
|
||||
tail call void @llvm.dbg.value(metadata !{float %80}, i64 0, metadata !18), !dbg !41
|
||||
br label %bb46, !dbg !41
|
||||
|
||||
bb46: ; preds = %bb35, %bb34, %bb33, %bb30, %bb16, %bb8, %bb2
|
||||
%y.1 = phi float [ %80, %bb35 ], [ %y.0, %bb34 ], [ %y.0, %bb33 ], [ %y.0, %bb30 ], [ %55, %bb16 ], [ %29, %bb8 ], [ %y.0, %bb2 ] ; <float> [#uses=2]
|
||||
%x.1 = phi float [ %76, %bb35 ], [ %x.0, %bb34 ], [ %x.0, %bb33 ], [ %x.0, %bb30 ], [ %51, %bb16 ], [ %28, %bb8 ], [ %x.0, %bb2 ] ; <float> [#uses=1]
|
||||
%81 = fmul float %y.1, 0.000000e+00, !dbg !42 ; <float> [#uses=1]
|
||||
%82 = fadd float %y.1, 0.000000e+00, !dbg !42 ; <float> [#uses=1]
|
||||
%tmpr = fadd float %x.1, %81, !dbg !42 ; <float> [#uses=1]
|
||||
%tmp89 = bitcast float %tmpr to i32 ; <i32> [#uses=1]
|
||||
%tmp90 = zext i32 %tmp89 to i64 ; <i64> [#uses=1]
|
||||
%tmp85 = bitcast float %82 to i32 ; <i32> [#uses=1]
|
||||
%tmp86 = zext i32 %tmp85 to i64 ; <i64> [#uses=1]
|
||||
%tmp87 = shl i64 %tmp86, 32 ; <i64> [#uses=1]
|
||||
%ins = or i64 %tmp90, %tmp87 ; <i64> [#uses=1]
|
||||
%tmp84 = bitcast i64 %ins to double ; <double> [#uses=1]
|
||||
%mrv75 = insertvalue %0 undef, double %tmp84, 0, !dbg !42 ; <%0> [#uses=1]
|
||||
ret %0 %mrv75, !dbg !42
|
||||
}
|
||||
|
||||
declare float @fabsf(float)
|
||||
|
||||
declare float @copysignf(float, float) nounwind readnone
|
||||
|
||||
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
|
||||
|
||||
!llvm.dbg.lv = !{!0, !11, !12, !13, !14, !16, !17, !18}
|
||||
|
||||
!0 = metadata !{i32 524545, metadata !1, metadata !"a", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
|
||||
!1 = metadata !{i32 524334, i32 0, metadata !2, metadata !"__divsc3", metadata !"__divsc3", metadata !"__divsc3", metadata !2, i32 1922, metadata !4, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true} ; [ DW_TAG_subprogram ]
|
||||
!2 = metadata !{i32 524329, metadata !"libgcc2.c", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !3} ; [ DW_TAG_file_type ]
|
||||
!3 = metadata !{i32 524305, i32 0, i32 1, metadata !"libgcc2.c", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
|
||||
!4 = metadata !{i32 524309, metadata !2, metadata !"", metadata !2, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !5, i32 0, null} ; [ DW_TAG_subroutine_type ]
|
||||
!5 = metadata !{metadata !6, metadata !9, metadata !9, metadata !9, metadata !9}
|
||||
!6 = metadata !{i32 524310, metadata !7, metadata !"SCtype", metadata !7, i32 170, i64 0, i64 0, i64 0, i32 0, metadata !8} ; [ DW_TAG_typedef ]
|
||||
!7 = metadata !{i32 524329, metadata !"libgcc2.h", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !3} ; [ DW_TAG_file_type ]
|
||||
!8 = metadata !{i32 524324, metadata !2, metadata !"complex float", metadata !2, i32 0, i64 64, i64 32, i64 0, i32 0, i32 3} ; [ DW_TAG_base_type ]
|
||||
!9 = metadata !{i32 524310, metadata !7, metadata !"SFtype", metadata !7, i32 167, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_typedef ]
|
||||
!10 = metadata !{i32 524324, metadata !2, metadata !"float", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
|
||||
!11 = metadata !{i32 524545, metadata !1, metadata !"b", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
|
||||
!12 = metadata !{i32 524545, metadata !1, metadata !"c", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
|
||||
!13 = metadata !{i32 524545, metadata !1, metadata !"d", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
|
||||
!14 = metadata !{i32 524544, metadata !15, metadata !"denom", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
|
||||
!15 = metadata !{i32 524299, metadata !1, i32 1922, i32 0} ; [ DW_TAG_lexical_block ]
|
||||
!16 = metadata !{i32 524544, metadata !15, metadata !"ratio", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
|
||||
!17 = metadata !{i32 524544, metadata !15, metadata !"x", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
|
||||
!18 = metadata !{i32 524544, metadata !15, metadata !"y", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
|
||||
!19 = metadata !{i32 1929, i32 0, metadata !15, null}
|
||||
!20 = metadata !{i32 1931, i32 0, metadata !15, null}
|
||||
!21 = metadata !{i32 1932, i32 0, metadata !15, null}
|
||||
!22 = metadata !{i32 1933, i32 0, metadata !15, null}
|
||||
!23 = metadata !{i32 1934, i32 0, metadata !15, null}
|
||||
!24 = metadata !{i32 1938, i32 0, metadata !15, null}
|
||||
!25 = metadata !{i32 1939, i32 0, metadata !15, null}
|
||||
!26 = metadata !{i32 1940, i32 0, metadata !15, null}
|
||||
!27 = metadata !{i32 1941, i32 0, metadata !15, null}
|
||||
!28 = metadata !{i32 1946, i32 0, metadata !15, null}
|
||||
!29 = metadata !{i32 1948, i32 0, metadata !15, null}
|
||||
!30 = metadata !{i32 1950, i32 0, metadata !15, null}
|
||||
!31 = metadata !{i32 1951, i32 0, metadata !15, null}
|
||||
!32 = metadata !{i32 1953, i32 0, metadata !15, null}
|
||||
!33 = metadata !{i32 1955, i32 0, metadata !15, null}
|
||||
!34 = metadata !{i32 1956, i32 0, metadata !15, null}
|
||||
!35 = metadata !{i32 1957, i32 0, metadata !15, null}
|
||||
!36 = metadata !{i32 1958, i32 0, metadata !15, null}
|
||||
!37 = metadata !{i32 1960, i32 0, metadata !15, null}
|
||||
!38 = metadata !{i32 1962, i32 0, metadata !15, null}
|
||||
!39 = metadata !{i32 1963, i32 0, metadata !15, null}
|
||||
!40 = metadata !{i32 1964, i32 0, metadata !15, null}
|
||||
!41 = metadata !{i32 1965, i32 0, metadata !15, null}
|
||||
!42 = metadata !{i32 1969, i32 0, metadata !15, null}
|
||||
Loading…
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Reference in New Issue
Block a user