``DW_OP_entry_value`` may also appear after the ``AsmPrinter`` pass when
a call site parameter value (``DW_AT_call_site_parameter_value``)
is represented as entry value of the parameter.
+- ``DW_OP_breg`` (or ``DW_OP_bregx``) represents a content on the provided
+ signed offset of the specified register. The opcode is only generated by the
+ ``AsmPrinter`` pass to describe call site parameter value which requires an
+ expression over two registers.
DWARF specifies three kinds of simple location descriptions: Register, memory,
and implicit location descriptions. Note that a location description is
template <class T> class SmallVectorImpl;
+using ParamLoadedValue = std::pair<const MachineOperand*, DIExpression*>;
+
//---------------------------------------------------------------------------
///
/// TargetInstrInfo - Interface to description of machine instruction set
return false;
}
+ /// Produce the expression describing the \p MI loading a value into
+ /// the parameter's forwarding register.
+ virtual Optional<ParamLoadedValue>
+ describeLoadedValue(const MachineInstr &MI) const;
+
private:
unsigned CallFrameSetupOpcode, CallFrameDestroyOpcode;
unsigned CatchRetOpcode;
return false;
}
+ /// This is a wrapper around getCallPreservedMask().
+ /// Return true if the register is preserved after the call.
+ virtual bool isCalleeSavedPhysReg(unsigned PhysReg,
+ const MachineFunction &MF) const;
+
/// Prior to adding the live-out mask to a stackmap or patchpoint
/// instruction, provide the target the opportunity to adjust it (mainly to
/// remove pseudo-registers that should be ignored).
ContextCU->addDIEEntry(*AbsDef, dwarf::DW_AT_object_pointer, *ObjectPointer);
}
-DIE &DwarfCompileUnit::constructCallSiteEntryDIE(DIE &ScopeDIE,
- const DISubprogram &CalleeSP,
- bool IsTail,
- const MCExpr *PCOffset) {
- // Insert a call site entry DIE within ScopeDIE.
- DIE &CallSiteDIE =
- createAndAddDIE(dwarf::DW_TAG_call_site, ScopeDIE, nullptr);
+dwarf::Tag DwarfCompileUnit::getDwarf5OrGNUCallSiteTag(dwarf::Tag Tag) const {
+ bool ApplyGNUExtensions = DD->getDwarfVersion() == 4 && DD->tuneForGDB();
+ if (!ApplyGNUExtensions)
+ return Tag;
+ switch (Tag) {
+ case dwarf::DW_TAG_call_site:
+ return dwarf::DW_TAG_GNU_call_site;
+ case dwarf::DW_TAG_call_site_parameter:
+ return dwarf::DW_TAG_GNU_call_site_parameter;
+ default:
+ llvm_unreachable("unhandled call site tag");
+ }
+}
- // For the purposes of showing tail call frames in backtraces, a key piece of
- // information is DW_AT_call_origin, a pointer to the callee DIE.
- DIE *CalleeDIE = getOrCreateSubprogramDIE(&CalleeSP);
- assert(CalleeDIE && "Could not create DIE for call site entry origin");
- addDIEEntry(CallSiteDIE, dwarf::DW_AT_call_origin, *CalleeDIE);
+dwarf::Attribute
+DwarfCompileUnit::getDwarf5OrGNUCallSiteAttr(dwarf::Attribute Attr) const {
+ bool ApplyGNUExtensions = DD->getDwarfVersion() == 4 && DD->tuneForGDB();
+ if (!ApplyGNUExtensions)
+ return Attr;
+ switch (Attr) {
+ case dwarf::DW_AT_call_all_calls:
+ return dwarf::DW_AT_GNU_all_call_sites;
+ case dwarf::DW_AT_call_target:
+ return dwarf::DW_AT_GNU_call_site_target;
+ case dwarf::DW_AT_call_origin:
+ return dwarf::DW_AT_abstract_origin;
+ case dwarf::DW_AT_call_pc:
+ return dwarf::DW_AT_low_pc;
+ case dwarf::DW_AT_call_value:
+ return dwarf::DW_AT_GNU_call_site_value;
+ case dwarf::DW_AT_call_tail_call:
+ return dwarf::DW_AT_GNU_tail_call;
+ default:
+ llvm_unreachable("unhandled call site attribute");
+ }
+}
- if (IsTail) {
- // Attach DW_AT_call_tail_call to tail calls for standards compliance.
- addFlag(CallSiteDIE, dwarf::DW_AT_call_tail_call);
+DIE &DwarfCompileUnit::constructCallSiteEntryDIE(
+ DIE &ScopeDIE, const DISubprogram *CalleeSP, bool IsTail,
+ const MCSymbol *PCAddr, const MCExpr *PCOffset, unsigned CallReg) {
+ // Insert a call site entry DIE within ScopeDIE.
+ DIE &CallSiteDIE = createAndAddDIE(
+ getDwarf5OrGNUCallSiteTag(dwarf::DW_TAG_call_site), ScopeDIE, nullptr);
+
+ if (CallReg) {
+ // Indirect call.
+ addAddress(CallSiteDIE,
+ getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_target),
+ MachineLocation(CallReg));
} else {
- // Attach the return PC to allow the debugger to disambiguate call paths
- // from one function to another.
+ DIE *CalleeDIE = getOrCreateSubprogramDIE(CalleeSP);
+ assert(CalleeDIE && "Could not create DIE for call site entry origin");
+ addDIEEntry(CallSiteDIE,
+ getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_origin),
+ *CalleeDIE);
+ }
+
+ if (IsTail)
+ // Attach DW_AT_call_tail_call to tail calls for standards compliance.
+ addFlag(CallSiteDIE,
+ getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_tail_call));
+
+ // Attach the return PC to allow the debugger to disambiguate call paths
+ // from one function to another.
+ if (DD->getDwarfVersion() == 4 && DD->tuneForGDB()) {
+ assert(PCAddr && "Missing PC information for a call");
+ addLabelAddress(CallSiteDIE, dwarf::DW_AT_low_pc, PCAddr);
+ } else if (!IsTail || DD->tuneForGDB()) {
assert(PCOffset && "Missing return PC information for a call");
addAddressExpr(CallSiteDIE, dwarf::DW_AT_call_return_pc, PCOffset);
}
+
return CallSiteDIE;
}
+void DwarfCompileUnit::constructCallSiteParmEntryDIEs(
+ DIE &CallSiteDIE, SmallVector<DbgCallSiteParam, 4> &Params) {
+ for (const auto &Param : Params) {
+ unsigned Register = Param.getRegister();
+ auto CallSiteDieParam =
+ DIE::get(DIEValueAllocator,
+ getDwarf5OrGNUCallSiteTag(dwarf::DW_TAG_call_site_parameter));
+ insertDIE(CallSiteDieParam);
+ addAddress(*CallSiteDieParam, dwarf::DW_AT_location,
+ MachineLocation(Register));
+
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
+ DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
+ DwarfExpr.setCallSiteParamValueFlag();
+
+ DwarfDebug::emitDebugLocValue(*Asm, nullptr, Param.getValue(), DwarfExpr);
+
+ addBlock(*CallSiteDieParam,
+ getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_value),
+ DwarfExpr.finalize());
+
+ CallSiteDIE.addChild(CallSiteDieParam);
+ }
+}
+
DIE *DwarfCompileUnit::constructImportedEntityDIE(
const DIImportedEntity *Module) {
DIE *IMDie = DIE::get(DIEValueAllocator, (dwarf::Tag)Module->getTag());
void constructAbstractSubprogramScopeDIE(LexicalScope *Scope);
+ /// This takes the official DWARF 5 tag and returns the appropriate
+ /// GNU tag if needed.
+ dwarf::Tag getDwarf5OrGNUCallSiteTag(dwarf::Tag Tag) const;
+ /// This takes the official DWARF 5 attribute and returns the appropriate
+ /// GNU attribute if needed.
+ dwarf::Attribute getDwarf5OrGNUCallSiteAttr(dwarf::Attribute Attr) const;
+
/// Construct a call site entry DIE describing a call within \p Scope to a
- /// callee described by \p CalleeSP. \p IsTail specifies whether the call is
- /// a tail call. \p PCOffset must be non-zero for non-tail calls or be the
+ /// callee described by \p CalleeSP.
+ /// \p IsTail specifies whether the call is a tail call.
+ /// \p PCAddr (used for GDB + DWARF 4 tuning) points to the PC value after
+ /// the call instruction.
+ /// \p PCOffset (used for cases other than GDB + DWARF 4 tuning) must be
+ /// non-zero for non-tail calls (in the case of non-gdb tuning, since for
+ /// GDB + DWARF 5 tuning we still generate PC info for tail calls) or be the
/// function-local offset to PC value after the call instruction.
- DIE &constructCallSiteEntryDIE(DIE &ScopeDIE, const DISubprogram &CalleeSP,
- bool IsTail, const MCExpr *PCOffset);
+ /// \p CallReg is a register location for an indirect call. For direct calls
+ /// the \p CallReg is set to 0.
+ DIE &constructCallSiteEntryDIE(DIE &ScopeDIE, const DISubprogram *CalleeSP,
+ bool IsTail, const MCSymbol *PCAddr,
+ const MCExpr *PCOffset, unsigned CallReg);
+ /// Construct call site parameter DIEs for the \p CallSiteDIE. The \p Params
+ /// were collected by the \ref collectCallSiteParameters.
+ /// Note: The order of parameters does not matter, since debuggers recognize
+ /// call site parameters by the DW_AT_location attribute.
+ void constructCallSiteParmEntryDIEs(DIE &CallSiteDIE,
+ SmallVector<DbgCallSiteParam, 4> &Params);
/// Construct import_module DIE.
DIE *constructImportedEntityDIE(const DIImportedEntity *Module);
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/DebugInfo/DWARF/DWARFExpression.h"
#define DEBUG_TYPE "dwarfdebug"
+STATISTIC(NumCSParams, "Number of dbg call site params created");
+
static cl::opt<bool>
DisableDebugInfoPrinting("disable-debug-info-print", cl::Hidden,
cl::desc("Disable debug info printing"));
}
}
+/// Try to interpret values loaded into registers that forward parameters
+/// for \p CallMI. Store parameters with interpreted value into \p Params.
+static void collectCallSiteParameters(const MachineInstr *CallMI,
+ ParamSet &Params) {
+ auto *MF = CallMI->getMF();
+ auto CalleesMap = MF->getCallSitesInfo();
+ auto CallFwdRegsInfo = CalleesMap.find(CallMI);
+
+ // There is no information for the call instruction.
+ if (CallFwdRegsInfo == CalleesMap.end())
+ return;
+
+ auto *MBB = CallMI->getParent();
+ const auto &TRI = MF->getSubtarget().getRegisterInfo();
+ const auto &TII = MF->getSubtarget().getInstrInfo();
+ const auto &TLI = MF->getSubtarget().getTargetLowering();
+
+ // Skip the call instruction.
+ auto I = std::next(CallMI->getReverseIterator());
+
+ DenseSet<unsigned> ForwardedRegWorklist;
+ // Add all the forwarding registers into the ForwardedRegWorklist.
+ for (auto ArgReg : CallFwdRegsInfo->second) {
+ bool InsertedReg = ForwardedRegWorklist.insert(ArgReg.Reg).second;
+ assert(InsertedReg && "Single register used to forward two arguments?");
+ }
+
+ // We erase, from the ForwardedRegWorklist, those forwarding registers for
+ // which we successfully describe a loaded value (by using
+ // the describeLoadedValue()). For those remaining arguments in the working
+ // list, for which we do not describe a loaded value by
+ // the describeLoadedValue(), we try to generate an entry value expression
+ // for their call site value desctipion, if the call is within the entry MBB.
+ // The RegsForEntryValues maps a forwarding register into the register holding
+ // the entry value.
+ // TODO: Handle situations when call site parameter value can be described
+ // as the entry value within basic blocks other then the first one.
+ bool ShouldTryEmitEntryVals = MBB->getIterator() == MF->begin();
+ DenseMap<unsigned, unsigned> RegsForEntryValues;
+
+ // If the MI is an instruction defining a parameter's forwarding register,
+ // add it into the Defs. If the MI clobbers more then one register, we use
+ // the Defs in order to remove all the registers from
+ // the ForwardedRegWorklist, since we do not support such situations now.
+ auto getForwardingRegsDefinedByMI = [&](const MachineInstr &MI,
+ SmallVectorImpl<unsigned> &Defs) {
+ if (MI.isDebugInstr())
+ return;
+
+ for (const MachineOperand &MO : MI.operands()) {
+ if (MO.isReg() && MO.isDef() && TRI->isPhysicalRegister(MO.getReg())) {
+ for (auto FwdReg : ForwardedRegWorklist) {
+ if (TRI->regsOverlap(FwdReg, MO.getReg())) {
+ Defs.push_back(FwdReg);
+ break;
+ }
+ }
+ }
+ }
+ };
+
+ auto finishCallSiteParam = [&](DbgValueLoc DbgLocVal, unsigned Reg) {
+ unsigned FwdReg = Reg;
+ if (ShouldTryEmitEntryVals) {
+ auto EntryValReg = RegsForEntryValues.find(Reg);
+ if (EntryValReg != RegsForEntryValues.end())
+ FwdReg = EntryValReg->second;
+ }
+
+ DbgCallSiteParam CSParm(FwdReg, DbgLocVal);
+ Params.push_back(CSParm);
+ ++NumCSParams;
+ };
+
+ // Search for a loading value in forwaring registers.
+ for (; I != MBB->rend(); ++I) {
+ // If the next instruction is a call we can not interpret parameter's
+ // forwarding registers or we finished the interpretation of all parameters.
+ if (I->isCall())
+ return;
+
+ if (ForwardedRegWorklist.empty())
+ return;
+
+ SmallVector<unsigned, 4> Defs;
+ getForwardingRegsDefinedByMI(*I, Defs);
+ if (Defs.empty())
+ continue;
+
+ // If the MI clobbers more then one forwarding register we must remove
+ // all of them from the working list.
+ for (auto Reg : Defs)
+ ForwardedRegWorklist.erase(Reg);
+ if (I->getNumDefs() != 1)
+ continue;
+ unsigned Reg = Defs[0];
+
+ if (auto ParamValue = TII->describeLoadedValue(*I)) {
+ if (ParamValue->first->isImm()) {
+ unsigned Val = ParamValue->first->getImm();
+ DbgValueLoc DbgLocVal(ParamValue->second, Val);
+ finishCallSiteParam(DbgLocVal, Reg);
+ } else if (ParamValue->first->isReg()) {
+ unsigned RegLoc = ParamValue->first->getReg();
+ unsigned SP = TLI->getStackPointerRegisterToSaveRestore();
+ unsigned FP = TRI->getFrameRegister(*MF);
+ bool IsSPorFP = (RegLoc == SP) || (RegLoc == FP);
+ if (TRI->isCalleeSavedPhysReg(RegLoc, *MF) || IsSPorFP) {
+ DbgValueLoc DbgLocVal(ParamValue->second,
+ MachineLocation(RegLoc,
+ /*IsIndirect=*/IsSPorFP));
+ finishCallSiteParam(DbgLocVal, Reg);
+ } else if (ShouldTryEmitEntryVals) {
+ ForwardedRegWorklist.insert(RegLoc);
+ RegsForEntryValues[RegLoc] = Reg;
+ }
+ }
+ }
+ }
+
+ // Emit the call site parameter's value as an entry value.
+ if (ShouldTryEmitEntryVals) {
+ // Create an entry value expression where the expression following
+ // the 'DW_OP_entry_value' will be the size of 1 (a register operation).
+ DIExpression *EntryExpr = DIExpression::get(MF->getFunction().getContext(),
+ {dwarf::DW_OP_entry_value, 1});
+ for (auto RegEntry : ForwardedRegWorklist) {
+ unsigned FwdReg = RegEntry;
+ auto EntryValReg = RegsForEntryValues.find(RegEntry);
+ if (EntryValReg != RegsForEntryValues.end())
+ FwdReg = EntryValReg->second;
+
+ DbgValueLoc DbgLocVal(EntryExpr, MachineLocation(RegEntry));
+ DbgCallSiteParam CSParm(FwdReg, DbgLocVal);
+ Params.push_back(CSParm);
+ ++NumCSParams;
+ }
+ }
+}
+
void DwarfDebug::constructCallSiteEntryDIEs(const DISubprogram &SP,
DwarfCompileUnit &CU, DIE &ScopeDIE,
const MachineFunction &MF) {
// for both tail and non-tail calls. Don't use DW_AT_call_all_source_calls
// because one of its requirements is not met: call site entries for
// optimized-out calls are elided.
- CU.addFlag(ScopeDIE, dwarf::DW_AT_call_all_calls);
+ CU.addFlag(ScopeDIE,
+ CU.getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_all_calls));
const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
assert(TII && "TargetInstrInfo not found: cannot label tail calls");
+ bool ApplyGNUExtensions = getDwarfVersion() == 4 && tuneForGDB();
// Emit call site entries for each call or tail call in the function.
for (const MachineBasicBlock &MBB : MF) {
return;
// If this is a direct call, find the callee's subprogram.
+ // In the case of an indirect call find the register that holds
+ // the callee.
const MachineOperand &CalleeOp = MI.getOperand(0);
- if (!CalleeOp.isGlobal())
- continue;
- const Function *CalleeDecl = dyn_cast<Function>(CalleeOp.getGlobal());
- if (!CalleeDecl || !CalleeDecl->getSubprogram())
+ if (!CalleeOp.isGlobal() && !CalleeOp.isReg())
continue;
+ unsigned CallReg = 0;
+ const DISubprogram *CalleeSP = nullptr;
+ const Function *CalleeDecl = nullptr;
+ if (CalleeOp.isReg()) {
+ CallReg = CalleeOp.getReg();
+ if (!CallReg)
+ continue;
+ } else {
+ CalleeDecl = dyn_cast<Function>(CalleeOp.getGlobal());
+ if (!CalleeDecl || !CalleeDecl->getSubprogram())
+ continue;
+ CalleeSP = CalleeDecl->getSubprogram();
+ }
+
// TODO: Omit call site entries for runtime calls (objc_msgSend, etc).
- // TODO: Add support for indirect calls.
bool IsTail = TII->isTailCall(MI);
- // For tail calls, no return PC information is needed. For regular calls,
- // the return PC is needed to disambiguate paths in the call graph which
- // could lead to some target function.
+ // For tail calls, for non-gdb tuning, no return PC information is needed.
+ // For regular calls (and tail calls in GDB tuning), the return PC
+ // is needed to disambiguate paths in the call graph which could lead to
+ // some target function.
const MCExpr *PCOffset =
- IsTail ? nullptr : getFunctionLocalOffsetAfterInsn(&MI);
+ (IsTail && !tuneForGDB()) ? nullptr
+ : getFunctionLocalOffsetAfterInsn(&MI);
+
+ // Address of a call-like instruction for a normal call or a jump-like
+ // instruction for a tail call. This is needed for GDB + DWARF 4 tuning.
+ const MCSymbol *PCAddr =
+ ApplyGNUExtensions ? const_cast<MCSymbol*>(getLabelAfterInsn(&MI))
+ : nullptr;
+
+ assert((IsTail || PCOffset || PCAddr) &&
+ "Call without return PC information");
- assert((IsTail || PCOffset) && "Call without return PC information");
LLVM_DEBUG(dbgs() << "CallSiteEntry: " << MF.getName() << " -> "
- << CalleeDecl->getName() << (IsTail ? " [tail]" : "")
- << "\n");
- CU.constructCallSiteEntryDIE(ScopeDIE, *CalleeDecl->getSubprogram(),
- IsTail, PCOffset);
+ << (CalleeDecl ? CalleeDecl->getName()
+ : StringRef(MF.getSubtarget()
+ .getRegisterInfo()
+ ->getName(CallReg)))
+ << (IsTail ? " [IsTail]" : "") << "\n");
+
+ DIE &CallSiteDIE =
+ CU.constructCallSiteEntryDIE(ScopeDIE, CalleeSP, IsTail, PCAddr,
+ PCOffset, CallReg);
+
+ // For now only GDB supports call site parameter debug info.
+ if (Asm->TM.Options.EnableDebugEntryValues &&
+ tuneForGDB()) {
+ ParamSet Params;
+ // Try to interpret values of call site parameters.
+ collectCallSiteParameters(&MI, Params);
+ CU.constructCallSiteParmEntryDIEs(CallSiteDIE, Params);
+ }
}
}
}
}
};
+/// Used for tracking debug info about call site parameters.
+class DbgCallSiteParam {
+private:
+ unsigned Register; ///< Parameter register at the callee entry point.
+ DbgValueLoc Value; ///< Corresponding location for the parameter value at
+ ///< the call site.
+public:
+ DbgCallSiteParam(unsigned Reg, DbgValueLoc Val)
+ : Register(Reg), Value(Val) {
+ assert(Reg && "Parameter register cannot be undef");
+ }
+
+ unsigned getRegister() const { return Register; }
+ DbgValueLoc getValue() const { return Value; }
+};
+
+/// Collection used for storing debug call site parameters.
+using ParamSet = SmallVector<DbgCallSiteParam, 4>;
+
/// Helper used to pair up a symbol and its DWARF compile unit.
struct SymbolCU {
SymbolCU(DwarfCompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {}
return false;
}
- // Handle simple register locations.
- if (!isMemoryLocation() && !HasComplexExpression) {
+ // Handle simple register locations. If we are supposed to emit
+ // a call site parameter expression and if that expression is just a register
+ // location, emit it with addBReg and offset 0, because we should emit a DWARF
+ // expression representing a value, rather than a location.
+ if (!isMemoryLocation() && !HasComplexExpression && (!isParameterValue() ||
+ isEntryValue())) {
for (auto &Reg : DwarfRegs) {
if (Reg.DwarfRegNo >= 0)
addReg(Reg.DwarfRegNo, Reg.Comment);
addOpPiece(Reg.Size);
}
- if (isEntryValue() && DwarfVersion >= 4)
+ if (isEntryValue() && !isParameterValue() && DwarfVersion >= 4)
emitOp(dwarf::DW_OP_stack_value);
DwarfRegs.clear();
while (ExprCursor) {
auto Op = ExprCursor.take();
- switch (Op->getOp()) {
+ uint64_t OpNum = Op->getOp();
+
+ if (OpNum >= dwarf::DW_OP_reg0 && OpNum <= dwarf::DW_OP_reg31) {
+ emitOp(OpNum);
+ continue;
+ } else if (OpNum >= dwarf::DW_OP_breg0 && OpNum <= dwarf::DW_OP_breg31) {
+ addBReg(OpNum - dwarf::DW_OP_breg0, Op->getArg(0));
+ continue;
+ }
+
+ switch (OpNum) {
case dwarf::DW_OP_LLVM_fragment: {
unsigned SizeInBits = Op->getArg(1);
unsigned FragmentOffset = Op->getArg(0);
case dwarf::DW_OP_lit0:
case dwarf::DW_OP_not:
case dwarf::DW_OP_dup:
- emitOp(Op->getOp());
+ emitOp(OpNum);
break;
case dwarf::DW_OP_deref:
assert(!isRegisterLocation());
case dwarf::DW_OP_LLVM_tag_offset:
TagOffset = Op->getArg(0);
break;
+ case dwarf::DW_OP_regx:
+ emitOp(dwarf::DW_OP_regx);
+ emitUnsigned(Op->getArg(0));
+ break;
+ case dwarf::DW_OP_bregx:
+ emitOp(dwarf::DW_OP_bregx);
+ emitUnsigned(Op->getArg(0));
+ emitSigned(Op->getArg(1));
+ break;
default:
llvm_unreachable("unhandled opcode found in expression");
}
}
- if (isImplicitLocation())
+ if (isImplicitLocation() && !isParameterValue())
// Turn this into an implicit location description.
addStackValue();
}
enum { Unknown = 0, Register, Memory, Implicit };
/// The flags of location description being produced.
- enum { EntryValue = 1 };
+ enum { EntryValue = 1, CallSiteParamValue };
unsigned LocationKind : 3;
unsigned LocationFlags : 2;
return LocationFlags & EntryValue;
}
+ bool isParameterValue() {
+ return LocationFlags & CallSiteParamValue;
+ }
+
Optional<uint8_t> TagOffset;
protected:
LocationFlags |= EntryValue;
}
+ /// Lock this down to become a call site parameter location.
+ void setCallSiteParamValueFlag() {
+ LocationFlags |= CallSiteParamValue;
+ }
+
/// Emit a machine register location. As an optimization this may also consume
/// the prefix of a DwarfExpression if a more efficient representation for
/// combining the register location and the first operation exists.
MDNodeToDieMap.insert(std::make_pair(Desc, D));
}
+void DwarfUnit::insertDIE(DIE *D) {
+ MDNodeToDieMap.insert(std::make_pair(nullptr, D));
+}
+
void DwarfUnit::addFlag(DIE &Die, dwarf::Attribute Attribute) {
if (DD->getDwarfVersion() >= 4)
Die.addValue(DIEValueAllocator, Attribute, dwarf::DW_FORM_flag_present,
/// the mappings are kept in DwarfDebug.
void insertDIE(const DINode *Desc, DIE *D);
+ void insertDIE(DIE *D);
+
/// Add a flag that is true to the DIE.
void addFlag(DIE &Die, dwarf::Attribute Attribute);
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSchedule.h"
#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInstrItineraries.h"
#include "llvm/Support/CommandLine.h"
return (DefCycle != -1 && DefCycle <= 1);
}
+Optional<ParamLoadedValue>
+TargetInstrInfo::describeLoadedValue(const MachineInstr &MI) const {
+ const MachineFunction *MF = MI.getMF();
+ const MachineOperand *Op = nullptr;
+ DIExpression *Expr = DIExpression::get(MF->getFunction().getContext(), {});;
+ const MachineOperand *SrcRegOp, *DestRegOp;
+
+ if (isCopyInstr(MI, SrcRegOp, DestRegOp)) {
+ Op = SrcRegOp;
+ return ParamLoadedValue(Op, Expr);
+ } else if (MI.isMoveImmediate()) {
+ Op = &MI.getOperand(1);
+ return ParamLoadedValue(Op, Expr);
+ } else if (MI.hasOneMemOperand()) {
+ int64_t Offset;
+ const auto &TRI = MF->getSubtarget().getRegisterInfo();
+ const auto &TII = MF->getSubtarget().getInstrInfo();
+ const MachineOperand *BaseOp;
+
+ if (!TII->getMemOperandWithOffset(MI, BaseOp, Offset, TRI))
+ return None;
+
+ Expr = DIExpression::prepend(Expr, DIExpression::DerefAfter, Offset);
+ Op = BaseOp;
+ return ParamLoadedValue(Op, Expr);
+ }
+
+ return None;
+}
+
/// Both DefMI and UseMI must be valid. By default, call directly to the
/// itinerary. This may be overriden by the target.
int TargetInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
return false;
}
+bool TargetRegisterInfo::isCalleeSavedPhysReg(
+ unsigned PhysReg, const MachineFunction &MF) const {
+ if (PhysReg == 0)
+ return false;
+ const uint32_t *callerPreservedRegs =
+ getCallPreservedMask(MF, MF.getFunction().getCallingConv());
+ if (callerPreservedRegs) {
+ assert(isPhysicalRegister(PhysReg) && "Expected physical register");
+ return (callerPreservedRegs[PhysReg / 32] >> PhysReg % 32) & 1;
+ }
+ return false;
+}
+
bool TargetRegisterInfo::canRealignStack(const MachineFunction &MF) const {
return !MF.getFunction().hasFnAttribute("no-realign-stack");
}
case DW_AT_call_data_value:
// Extensions.
case DW_AT_GNU_call_site_value:
+ case DW_AT_GNU_call_site_target:
return true;
default:
return false;
}
unsigned DIExpression::ExprOperand::getSize() const {
- switch (getOp()) {
+ uint64_t Op = getOp();
+
+ if (Op >= dwarf::DW_OP_breg0 && Op <= dwarf::DW_OP_breg31)
+ return 2;
+
+ switch (Op) {
case dwarf::DW_OP_LLVM_convert:
case dwarf::DW_OP_LLVM_fragment:
+ case dwarf::DW_OP_bregx:
return 3;
case dwarf::DW_OP_constu:
+ case dwarf::DW_OP_consts:
case dwarf::DW_OP_deref_size:
case dwarf::DW_OP_plus_uconst:
case dwarf::DW_OP_LLVM_tag_offset:
case dwarf::DW_OP_entry_value:
+ case dwarf::DW_OP_regx:
return 2;
default:
return 1;
if (I->get() + I->getSize() > E->get())
return false;
+ uint64_t Op = I->getOp();
+ if ((Op >= dwarf::DW_OP_reg0 && Op <= dwarf::DW_OP_reg31) ||
+ (Op >= dwarf::DW_OP_breg0 && Op <= dwarf::DW_OP_breg31))
+ return true;
+
// Check that the operand is valid.
- switch (I->getOp()) {
+ switch (Op) {
default:
return false;
case dwarf::DW_OP_LLVM_fragment:
case dwarf::DW_OP_lit0:
case dwarf::DW_OP_not:
case dwarf::DW_OP_dup:
+ case dwarf::DW_OP_regx:
+ case dwarf::DW_OP_bregx:
break;
}
}
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
-#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
}
}
+Optional<ParamLoadedValue>
+X86InstrInfo::describeLoadedValue(const MachineInstr &MI) const {
+ const MachineOperand *Op = nullptr;
+ DIExpression *Expr = nullptr;
+
+ switch (MI.getOpcode()) {
+ case X86::LEA32r:
+ case X86::LEA64r:
+ case X86::LEA64_32r: {
+ // Operand 4 could be global address. For now we do not support
+ // such situation.
+ if (!MI.getOperand(4).isImm() || !MI.getOperand(2).isImm())
+ return None;
+
+ const MachineOperand &Op1 = MI.getOperand(1);
+ const MachineOperand &Op2 = MI.getOperand(3);
+ const TargetRegisterInfo *TRI = &getRegisterInfo();
+ assert(Op2.isReg() &&
+ (Op2.getReg() == X86::NoRegister ||
+ TargetRegisterInfo::isPhysicalRegister(Op2.getReg())));
+
+ // Omit situations like:
+ // %rsi = lea %rsi, 4, ...
+ if ((Op1.isReg() && Op1.getReg() == MI.getOperand(0).getReg()) ||
+ Op2.getReg() == MI.getOperand(0).getReg())
+ return None;
+ else if ((Op1.isReg() && Op1.getReg() != X86::NoRegister &&
+ TRI->regsOverlap(Op1.getReg(), MI.getOperand(0).getReg())) ||
+ (Op2.getReg() != X86::NoRegister &&
+ TRI->regsOverlap(Op2.getReg(), MI.getOperand(0).getReg())))
+ return None;
+
+ int64_t Coef = MI.getOperand(2).getImm();
+ int64_t Offset = MI.getOperand(4).getImm();
+ SmallVector<uint64_t, 8> Ops;
+
+ if ((Op1.isReg() && Op1.getReg() != X86::NoRegister)) {
+ Op = &Op1;
+ } else if (Op1.isFI())
+ Op = &Op1;
+
+ if (Op && Op->isReg() && Op->getReg() == Op2.getReg() && Coef > 0) {
+ Ops.push_back(dwarf::DW_OP_constu);
+ Ops.push_back(Coef + 1);
+ Ops.push_back(dwarf::DW_OP_mul);
+ } else {
+ if (Op && Op2.getReg() != X86::NoRegister) {
+ int dwarfReg = TRI->getDwarfRegNum(Op2.getReg(), false);
+ if (dwarfReg < 0)
+ return None;
+ else if (dwarfReg < 32) {
+ Ops.push_back(dwarf::DW_OP_breg0 + dwarfReg);
+ Ops.push_back(0);
+ } else {
+ Ops.push_back(dwarf::DW_OP_bregx);
+ Ops.push_back(dwarfReg);
+ Ops.push_back(0);
+ }
+ } else if (!Op) {
+ assert(Op2.getReg() != X86::NoRegister);
+ Op = &Op2;
+ }
+
+ if (Coef > 1) {
+ assert(Op2.getReg() != X86::NoRegister);
+ Ops.push_back(dwarf::DW_OP_constu);
+ Ops.push_back(Coef);
+ Ops.push_back(dwarf::DW_OP_mul);
+ }
+
+ if (((Op1.isReg() && Op1.getReg() != X86::NoRegister) || Op1.isFI()) &&
+ Op2.getReg() != X86::NoRegister) {
+ Ops.push_back(dwarf::DW_OP_plus);
+ }
+ }
+
+ DIExpression::appendOffset(Ops, Offset);
+ Expr = DIExpression::get(MI.getMF()->getFunction().getContext(), Ops);
+
+ return ParamLoadedValue(Op, Expr);;
+ }
+ default:
+ return TargetInstrInfo::describeLoadedValue(MI);
+ }
+}
+
/// This is an architecture-specific helper function of reassociateOps.
/// Set special operand attributes for new instructions after reassociation.
void X86InstrInfo::setSpecialOperandAttr(MachineInstr &OldMI1,
#define GET_INSTRINFO_HELPER_DECLS
#include "X86GenInstrInfo.inc"
+ Optional<ParamLoadedValue>
+ describeLoadedValue(const MachineInstr &MI) const override;
+
protected:
/// Commutes the operands in the given instruction by changing the operands
/// order and/or changing the instruction's opcode and/or the immediate value
--- /dev/null
+# RUN: llc -debug-entry-values -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
+#
+# CHECK: DW_TAG_GNU_call_site
+# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "foo"
+# CHECK-NEXT: DW_AT_low_pc
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg1 RDX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_fbreg +8)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg4 RSI))
+# CHECK-EMPTY:
+# CHECK: DW_TAG_GNU_call_site
+# CHECK-NEXT: DW_AT_abstract_origin {{.*}}"foo"
+# CHECK-NEXT: DW_AT_low_pc
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_fbreg +8, DW_OP_deref)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit4)
+# CHECK-EMPTY:
+# CHECK-NOT: DW_TAG_GNU_call_site_parameter
+#
+# Check that call site interpretation analysis can interpret instructions such
+# as move immediate, register to register moves, stack loading and LEA
+# instructions. Last negative check should verify that we are not producing
+# interpretation for RDX register since its loaded value is call clobberable.
+# Also check that we are generating proper call site debug entities.
+--- |
+ ; ModuleID = 'dbgcall-site-interpretation.c'
+ source_filename = "dbgcall-site-interpretation.c"
+ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ ; Function Attrs: nounwind uwtable
+ define dso_local i32 @baa(i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4) local_unnamed_addr !dbg !9 {
+ entry:
+ %arg3.addr = alloca i32, align 4
+ %local2 = alloca i32, align 4
+ call void @llvm.dbg.value(metadata i32 %arg1, metadata !14, metadata !DIExpression()), !dbg !21
+ call void @llvm.dbg.value(metadata i32 %arg2, metadata !15, metadata !DIExpression()), !dbg !21
+ call void @llvm.dbg.value(metadata i32 %arg3, metadata !16, metadata !DIExpression()), !dbg !21
+ store i32 %arg3, i32* %arg3.addr, align 4
+ call void @llvm.dbg.value(metadata i32 %arg4, metadata !17, metadata !DIExpression()), !dbg !21
+ %0 = bitcast i32* %local2 to i8*, !dbg !21
+ call void @llvm.dbg.value(metadata i32* %arg3.addr, metadata !16, metadata !DIExpression(DW_OP_deref)), !dbg !21
+ %call = call i32 @foo(i32 %arg1, i32 %arg2, i32* nonnull %arg3.addr, i32 %arg4), !dbg !21
+ call void @llvm.dbg.value(metadata i32 %call, metadata !18, metadata !DIExpression()), !dbg !21
+ %cmp = icmp sgt i32 %arg1, %arg2, !dbg !21
+ %1 = load i32, i32* %arg3.addr, align 4, !dbg !21
+ call void @llvm.dbg.value(metadata i32 %1, metadata !16, metadata !DIExpression()), !dbg !21
+ %add = add nsw i32 %1, %arg1, !dbg !21
+ %add1 = add nsw i32 %arg4, %arg2, !dbg !21
+ %local1.0 = select i1 %cmp, i32 %add, i32 %add1, !dbg !21
+ call void @llvm.dbg.value(metadata i32 %local1.0, metadata !18, metadata !DIExpression()), !dbg !21
+ %rem = srem i32 %1, %arg1, !dbg !21
+ %tobool = icmp eq i32 %rem, 0, !dbg !21
+ %mul = mul nsw i32 %1, %arg1, !dbg !21
+ %add3 = add nsw i32 %1, %arg4, !dbg !21
+ %storemerge = select i1 %tobool, i32 %mul, i32 %add3, !dbg !21
+ call void @llvm.dbg.value(metadata i32 %storemerge, metadata !19, metadata !DIExpression()), !dbg !21
+ store i32 %storemerge, i32* %local2, align 4, !dbg !21
+ %cmp6 = icmp slt i32 %storemerge, %arg4, !dbg !21
+ %local3.0.v = select i1 %cmp6, i32 %local1.0, i32 %arg1, !dbg !21
+ %local3.0 = mul nsw i32 %local3.0.v, %storemerge, !dbg !21
+ call void @llvm.dbg.value(metadata i32 %local3.0, metadata !20, metadata !DIExpression()), !dbg !21
+ call void @llvm.dbg.value(metadata i32* %local2, metadata !19, metadata !DIExpression(DW_OP_deref)), !dbg !21
+ %call12 = call i32 @foo(i32 %local1.0, i32 4, i32* nonnull %local2, i32 %local3.0), !dbg !21
+ call void @llvm.dbg.value(metadata i32 %call12, metadata !14, metadata !DIExpression()), !dbg !21
+ %add13 = add nsw i32 %call12, 4, !dbg !21
+ ret i32 %add13, !dbg !21
+ }
+
+ declare !dbg !4 dso_local i32 @foo(i32, i32, i32*, i32) local_unnamed_addr
+
+ ; Function Attrs: nounwind readnone speculatable
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!5, !6, !7}
+ !llvm.ident = !{!8}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
+ !1 = !DIFile(filename: "dbgcall-site-interpretation.c", directory: "/dir")
+ !2 = !{}
+ !3 = !{!4}
+ !4 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 9, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !5 = !{i32 2, !"Dwarf Version", i32 4}
+ !6 = !{i32 2, !"Debug Info Version", i32 3}
+ !7 = !{i32 1, !"wchar_size", i32 4}
+ !8 = !{!"clang version 9.0.0"}
+ !9 = distinct !DISubprogram(name: "baa", scope: !1, file: !1, line: 10, type: !10, scopeLine: 10, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
+ !10 = !DISubroutineType(types: !11)
+ !11 = !{!12, !12, !12, !12, !12}
+ !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !13 = !{!14, !15, !16, !17, !18, !19, !20}
+ !14 = !DILocalVariable(name: "arg1", arg: 1, scope: !9, file: !1, line: 10, type: !12)
+ !15 = !DILocalVariable(name: "arg2", arg: 2, scope: !9, file: !1, line: 10, type: !12, flags: DIFlagArgumentNotModified)
+ !16 = !DILocalVariable(name: "arg3", arg: 3, scope: !9, file: !1, line: 10, type: !12)
+ !17 = !DILocalVariable(name: "arg4", arg: 4, scope: !9, file: !1, line: 10, type: !12, flags: DIFlagArgumentNotModified)
+ !18 = !DILocalVariable(name: "local1", scope: !9, file: !1, line: 11, type: !12)
+ !19 = !DILocalVariable(name: "local2", scope: !9, file: !1, line: 11, type: !12)
+ !20 = !DILocalVariable(name: "local3", scope: !9, file: !1, line: 11, type: !12)
+ !21 = !DILocation(line: 10, column: 13, scope: !9)
+
+...
+---
+name: baa
+liveins:
+ - { reg: '$edi', virtual-reg: '' }
+ - { reg: '$esi', virtual-reg: '' }
+ - { reg: '$edx', virtual-reg: '' }
+ - { reg: '$ecx', virtual-reg: '' }
+callSites:
+ - { bb: 0, offset: 23, fwdArgRegs:
+ - { arg: 0, reg: '$edi' }
+ - { arg: 1, reg: '$esi' }
+ - { arg: 2, reg: '$rdx' }
+ - { arg: 3, reg: '$ecx' } }
+ - { bb: 0, offset: 49, fwdArgRegs:
+ - { arg: 0, reg: '$edi' }
+ - { arg: 1, reg: '$esi' }
+ - { arg: 2, reg: '$rdx' }
+ - { arg: 3, reg: '$ecx' } }
+body: |
+ bb.0.entry:
+ liveins: $ecx, $edi, $edx, $esi, $r15, $r14, $rbx
+
+ DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !21
+ DBG_VALUE $esi, $noreg, !15, !DIExpression(), debug-location !21
+ DBG_VALUE $edx, $noreg, !16, !DIExpression(), debug-location !21
+ DBG_VALUE $ecx, $noreg, !17, !DIExpression(), debug-location !21
+ frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 24
+ frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 32
+ $rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
+ CFI_INSTRUCTION def_cfa_offset 48
+ CFI_INSTRUCTION offset $rbx, -32
+ CFI_INSTRUCTION offset $r14, -24
+ CFI_INSTRUCTION offset $r15, -16
+ $r14d = MOV32rr $ecx, implicit-def $r14
+ DBG_VALUE $edx, $noreg, !16, !DIExpression(), debug-location !21
+ $r15d = MOV32rr $esi, implicit-def $r15
+ $ebx = MOV32rr $edi, implicit-def $rbx
+ $edi = MOV32rr $esi
+ MOV32mr $rsp, 1, $noreg, 8, $noreg, killed renamable $edx :: (store 4 into %ir.arg3.addr)
+ renamable $rdx = LEA64r $rsp, 1, $noreg, 8, $noreg
+ renamable $ecx = MOV32rr $r14d,
+ CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $rdx, implicit $ecx, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, implicit-def $rax, debug-location !21
+ DBG_VALUE $noreg, $noreg, !18, !DIExpression(), debug-location !21
+ $rdx = MOV64rr renamable $rax
+ $ecx = KILL renamable $ecx, implicit-def $rcx
+ renamable $eax = LEA64_32r renamable $rcx, 1, renamable $rbx, 0, $noreg, debug-location !21
+ renamable $edi = LEA64_32r renamable $r14, 1, renamable $r15, 0, $noreg, debug-location !21
+ CMP32rr renamable $ebx, renamable $r15d, implicit-def $eflags, implicit killed $r15, debug-location !21
+ renamable $edi = CMOV32rr killed renamable $edi, killed renamable $eax, 15, implicit killed $eflags, debug-location !21
+ DBG_VALUE $edi, $noreg, !18, !DIExpression(), debug-location !21
+ $eax = MOV32rr $ecx, debug-location !21
+ CDQ implicit-def $eax, implicit-def $edx, implicit $eax, debug-location !21
+ IDIV32r renamable $ebx, implicit-def dead $eax, implicit-def $edx, implicit-def dead $eflags, implicit $eax, implicit $edx, debug-location !21
+ $eax = MOV32rr $ecx, debug-location !21
+ renamable $eax = nsw IMUL32rr killed renamable $eax, renamable $ebx, implicit-def dead $eflags, debug-location !21
+ renamable $ecx = nsw ADD32rr renamable $ecx, renamable $r14d, implicit-def dead $eflags, implicit killed $rcx, implicit-def $rcx, debug-location !21
+ TEST32rr killed renamable $edx, renamable $edx, implicit-def $eflags, debug-location !21
+ renamable $ecx = CMOV32rr renamable $ecx, killed renamable $eax, 4, implicit killed $eflags, implicit killed $rcx, implicit-def $rcx, debug-location !21
+ DBG_VALUE $ecx, $noreg, !19, !DIExpression(), debug-location !21
+ MOV32mr $rsp, 1, $noreg, 12, $noreg, renamable $ecx, debug-location !21 :: (store 4 into %ir.local2)
+ CMP32rr renamable $ecx, renamable $r14d, implicit-def $eflags, implicit killed $r14, debug-location !21
+ renamable $ebx = CMOV32rr renamable $ebx, renamable $edi, 12, implicit killed $eflags, implicit killed $rbx, implicit-def $rbx, debug-location !21
+ renamable $ecx = nsw IMUL32rr renamable $ecx, renamable $ebx, implicit-def dead $eflags, implicit killed $rbx, implicit killed $rcx, implicit-def $rcx, debug-location !21
+ DBG_VALUE $rsp, $noreg, !19, !DIExpression(DW_OP_plus_uconst, 12, DW_OP_deref), debug-location !21
+ DBG_VALUE $ecx, $noreg, !20, !DIExpression(), debug-location !21
+ $esi = MOV32ri 4, debug-location !21
+ renamable $ecx = MOV32rm $rsp, 1, $noreg, 8, $noreg, implicit-def $rcx, debug-location !21 :: (dereferenceable load 4 from %ir.arg3.addr)
+ CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $rdx, implicit $ecx, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, implicit-def $rax, debug-location !21
+ DBG_VALUE $eax, $noreg, !14, !DIExpression(), debug-location !21
+ renamable $eax = nsw ADD32ri8 killed renamable $eax, 4, implicit-def dead $eflags, debug-location !21
+ $rsp = frame-destroy ADD64ri8 $rsp, 16, implicit-def dead $eflags, debug-location !21
+ CFI_INSTRUCTION def_cfa_offset 32, debug-location !21
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !21
+ CFI_INSTRUCTION def_cfa_offset 24, debug-location !21
+ $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !21
+ DBG_VALUE $ecx, $noreg, !17, !DIExpression(DW_OP_entry_value, 1), debug-location !21
+ CFI_INSTRUCTION def_cfa_offset 16, debug-location !21
+ $r15 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !21
+ DBG_VALUE $esi, $noreg, !15, !DIExpression(DW_OP_entry_value, 1), debug-location !21
+ CFI_INSTRUCTION def_cfa_offset 8, debug-location !21
+ RETQ $eax, debug-location !21
+
+...
--- /dev/null
+# RUN: llc -debug-entry-values -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
+# CHECK: DW_TAG_GNU_call_site
+# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "foo")
+# CHECK-NEXT: DW_AT_low_pc {{.*}}
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg9 R9)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg15 R15+10)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg8 R8)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg15 R15+0, DW_OP_lit2, DW_OP_mul, DW_OP_plus_uconst 0x8)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg1 RDX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0, DW_OP_lit5, DW_OP_mul, DW_OP_plus_uconst 0x8)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0, DW_OP_breg15 R15+0, DW_OP_lit2, DW_OP_mul, DW_OP_plus, DW_OP_plus_uconst 0x4)
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0, DW_OP_breg15 R15+0, DW_OP_plus)
+# CHECK: DW_TAG_GNU_call_site
+# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "foo2")
+# CHECK-NEXT: DW_AT_low_pc {{.*}}
+# CHECK-EMPTY:
+# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+0, DW_OP_lit2, DW_OP_mul)
+--- |
+ ; ModuleID = 'dbgcall-site-lea-interpretation.ll'
+ source_filename = "dbgcall-site-lea-interpretation.c"
+ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ define dso_local i32 @baa(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr !dbg !10 {
+ entry:
+ %arg1.addr = alloca i32, align 4
+ %arg3.addr = alloca i32, align 4
+ %local1 = alloca i32, align 4
+ store i32 %arg1, i32* %arg1.addr, align 4
+ store i32 %arg3, i32* %arg3.addr, align 4
+ %0 = bitcast i32* %local1 to i8*, !dbg !14
+ %mul = mul nsw i32 %arg3, %arg1, !dbg !14
+ store i32 %mul, i32* %local1, align 4, !dbg !14
+ %add = add nsw i32 %arg2, %arg1, !dbg !14
+ %sub = sub nsw i32 %add, %arg3, !dbg !14
+ %call = call i32 @foo(i32 %mul, i32 %sub, i32* nonnull %local1, i32* nonnull %arg1.addr, i32* nonnull %arg3.addr, i32 %add), !dbg !14
+ %1 = load i32, i32* %local1, align 4, !dbg !14
+ %add2 = add nsw i32 %1, %call, !dbg !14
+ store i32 %add2, i32* %local1, align 4, !dbg !14
+ %call3 = call i32 @foo2(i32* nonnull %local1), !dbg !14
+ %2 = load i32, i32* %local1, align 4, !dbg !14
+ ret i32 %2, !dbg !14
+ }
+
+ declare !dbg !4 dso_local i32 @foo(i32, i32, i32*, i32*, i32*, i32) local_unnamed_addr
+
+ declare !dbg !5 dso_local i32 @foo2(i32*) local_unnamed_addr
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!6, !7, !8}
+ !llvm.ident = !{!9}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
+ !1 = !DIFile(filename: "dbgcall-site-lea-interpretation.c", directory: "/dir")
+ !2 = !{}
+ !3 = !{!4, !5}
+ !4 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !5 = !DISubprogram(name: "foo2", scope: !1, file: !1, line: 9, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !6 = !{i32 2, !"Dwarf Version", i32 4}
+ !7 = !{i32 2, !"Debug Info Version", i32 3}
+ !8 = !{i32 1, !"wchar_size", i32 4}
+ !9 = !{!"clang version 9.0.0"}
+ !10 = distinct !DISubprogram(name: "baa", scope: !1, file: !1, line: 11, type: !11, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
+ !11 = !DISubroutineType(types: !12)
+ !12 = !{!13, !13, !13, !13}
+ !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !14 = !DILocation(line: 11, column: 13, scope: !10)
+
+...
+---
+name: baa
+liveins:
+ - { reg: '$edi', virtual-reg: '' }
+ - { reg: '$esi', virtual-reg: '' }
+ - { reg: '$edx', virtual-reg: '' }
+callSites:
+ - { bb: 0, offset: 21, fwdArgRegs:
+ - { arg: 0, reg: '$edi' }
+ - { arg: 1, reg: '$esi' }
+ - { arg: 2, reg: '$rdx' }
+ - { arg: 3, reg: '$rcx' }
+ - { arg: 4, reg: '$r8' }
+ - { arg: 5, reg: '$r9d' } }
+ - { bb: 0, offset: 24, fwdArgRegs:
+ - { arg: 0, reg: '$rdi' } }
+body: |
+ bb.0.entry:
+ liveins: $edi, $edx, $esi, $rbx
+
+ frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 16
+ $rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
+ CFI_INSTRUCTION def_cfa_offset 32
+ CFI_INSTRUCTION offset $rbx, -16
+ $r9d = MOV32rr $esi
+ $r14 = MOV64rr $rsi
+ $r15 = MOV64rr $rdi
+ MOV32mr $rsp, 1, $noreg, 12, $noreg, renamable $edi :: (store 4 into %ir.arg1.addr)
+ MOV32mr $rsp, 1, $noreg, 8, $noreg, renamable $edx :: (store 4 into %ir.arg3.addr)
+ renamable $r9d = nsw ADD32rr killed renamable $r9d, renamable $edi, implicit-def dead $eflags, debug-location !14
+ $esi = MOV32rr $r9d, debug-location !14
+ renamable $esi = nsw SUB32rr killed renamable $esi, renamable $edx, implicit-def dead $eflags, debug-location !14
+ renamable $edx = nsw IMUL32rr killed renamable $edx, killed renamable $edi, implicit-def dead $eflags, debug-location !14
+ MOV32mr $rsp, 1, $noreg, 4, $noreg, renamable $edx, debug-location !14 :: (store 4 into %ir.local1)
+ renamable $rcx = LEA64r $r14, 1, $r15, 0, $noreg
+ renamable $rdi = LEA64r $r14, 2, $r15, 4, $noreg
+ renamable $rsi = LEA64r $r14, 1, $noreg, 0, $noreg
+ renamable $rdx = LEA64r $r14, 4, $r14, 8, $noreg
+ renamable $r8 = LEA64r $noreg, 2, $r15, 8, $noreg
+ renamable $r9 = LEA64r $noreg, 1, $r15, 10, $noreg, implicit-def $r9d
+ CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $rdx, implicit $rcx, implicit $r8, implicit $r9d, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !14
+ ADD32mr $rsp, 1, $noreg, 4, $noreg, killed renamable $eax, implicit-def dead $eflags, debug-location !14 :: (store 4 into %ir.local1), (dereferenceable load 4 from %ir.local1)
+ $rdi = LEA64r $r14, 1, killed $r14, 0, $noreg
+ CALL64pcrel32 @foo2, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eax, debug-location !14
+ renamable $eax = MOV32rm $rsp, 1, $noreg, 4, $noreg, debug-location !14 :: (dereferenceable load 4 from %ir.local1)
+ $rsp = frame-destroy ADD64ri8 $rsp, 16, implicit-def dead $eflags, debug-location !14
+ CFI_INSTRUCTION def_cfa_offset 16, debug-location !14
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !14
+ CFI_INSTRUCTION def_cfa_offset 8, debug-location !14
+ RETQ $eax, debug-location !14
+
+...
--- /dev/null
+# RUN: llc -debug-entry-values -filetype=obj -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s| llvm-dwarfdump - | FileCheck %s
+#
+# extern void foo(int *a, int b, int c, int d, int e, int f);
+# extern int getVal();
+#
+# void baa(int arg1, int arg2, int arg3) {
+# int local1 = getVal();
+# foo(&local1, arg2, 10, 15, arg3 + 3, arg1 + arg2);
+# }
+#
+# CHECK: DW_TAG_GNU_call_site
+# CHECK: DW_AT_abstract_origin {{.*}} "getVal"
+#
+# CHECK: DW_TAG_GNU_call_site
+# CHECK: DW_AT_abstract_origin {{.*}} "foo"
+# CHECK: DW_AT_low_pc {{.*}}
+# CHECK-EMPTY:
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit15)
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg1 RDX)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit10)
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg3 RBX+0)
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_fbreg +12)
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg9 R9)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg15 R15+0, DW_OP_breg3 RBX+0, DW_OP_plus)
+# CHECK: DW_TAG_GNU_call_site_parameter
+# CHECK-NEXT: DW_AT_location (DW_OP_reg8 R8)
+# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg14 R14+3)
+--- |
+ ; ModuleID = 'test.c'
+ source_filename = "test.c"
+ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ ; Function Attrs: nounwind uwtable
+ define dso_local void @baa(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr !dbg !10 {
+ entry:
+ %local1 = alloca i32, align 4
+ call void @llvm.dbg.value(metadata i32 %arg1, metadata !15, metadata !DIExpression()), !dbg !19
+ call void @llvm.dbg.value(metadata i32 %arg2, metadata !16, metadata !DIExpression()), !dbg !20
+ call void @llvm.dbg.value(metadata i32 %arg3, metadata !17, metadata !DIExpression()), !dbg !21
+ %0 = bitcast i32* %local1 to i8*, !dbg !22
+ %call = tail call i32 (...) @getVal(), !dbg !23
+ call void @llvm.dbg.value(metadata i32 %call, metadata !18, metadata !DIExpression()), !dbg !24
+ store i32 %call, i32* %local1, align 4, !dbg !24
+ %add = add nsw i32 %arg3, 3, !dbg !24
+ %add1 = add nsw i32 %arg2, %arg1, !dbg !24
+ call void @llvm.dbg.value(metadata i32* %local1, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !24
+ call void @foo(i32* nonnull %local1, i32 %arg2, i32 10, i32 15, i32 %add, i32 %add1), !dbg !24
+ ret void, !dbg !24
+ }
+
+ declare !dbg !4 dso_local i32 @getVal(...) local_unnamed_addr
+
+ declare !dbg !5 dso_local void @foo(i32*, i32, i32, i32, i32, i32) local_unnamed_addr
+
+ ; Function Attrs: nounwind readnone speculatable
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!6, !7, !8}
+ !llvm.ident = !{!9}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
+ !1 = !DIFile(filename: "test.c", directory: "/dir")
+ !2 = !{}
+ !3 = !{!4, !5}
+ !4 = !DISubprogram(name: "getVal", scope: !1, file: !1, line: 2, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !5 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !6 = !{i32 2, !"Dwarf Version", i32 4}
+ !7 = !{i32 2, !"Debug Info Version", i32 3}
+ !8 = !{i32 1, !"wchar_size", i32 4}
+ !9 = !{!"clang version 9.0.0"}
+ !10 = distinct !DISubprogram(name: "baa", scope: !1, file: !1, line: 4, type: !11, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !14)
+ !11 = !DISubroutineType(types: !12)
+ !12 = !{null, !13, !13, !13}
+ !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !14 = !{!15, !16, !17, !18}
+ !15 = !DILocalVariable(name: "arg1", arg: 1, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+ !16 = !DILocalVariable(name: "arg2", arg: 2, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+ !17 = !DILocalVariable(name: "arg3", arg: 3, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+ !18 = !DILocalVariable(name: "local1", scope: !10, file: !1, line: 5, type: !13)
+ !19 = !DILocation(line: 4, column: 14, scope: !10)
+ !20 = !DILocation(line: 4, column: 24, scope: !10)
+ !21 = !DILocation(line: 4, column: 34, scope: !10)
+ !22 = !DILocation(line: 5, column: 3, scope: !10)
+ !23 = !DILocation(line: 5, column: 16, scope: !10)
+ !24 = !DILocation(line: 5, column: 7, scope: !10)
+
+...
+---
+name: baa
+liveins:
+ - { reg: '$edi', virtual-reg: '' }
+ - { reg: '$esi', virtual-reg: '' }
+ - { reg: '$edx', virtual-reg: '' }
+callSites:
+ - { bb: 0, offset: 21, fwdArgRegs: [] }
+ - { bb: 0, offset: 31, fwdArgRegs:
+ - { arg: 0, reg: '$rdi' }
+ - { arg: 1, reg: '$esi' }
+ - { arg: 2, reg: '$edx' }
+ - { arg: 3, reg: '$ecx' }
+ - { arg: 4, reg: '$r8d' }
+ - { arg: 5, reg: '$r9d' } }
+body: |
+ bb.0.entry:
+ liveins: $edi, $edx, $esi, $r15, $r14, $rbx
+
+ DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !19
+ DBG_VALUE $esi, $noreg, !16, !DIExpression(), debug-location !20
+ DBG_VALUE $edx, $noreg, !17, !DIExpression(), debug-location !21
+ frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 24
+ frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 32
+ $rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
+ CFI_INSTRUCTION def_cfa_offset 48
+ CFI_INSTRUCTION offset $rbx, -32
+ CFI_INSTRUCTION offset $r14, -24
+ CFI_INSTRUCTION offset $r15, -16
+ $r14d = MOV32rr $edx, implicit-def $r14
+ $ebx = MOV32rr $esi, implicit-def $rbx
+ $r15d = MOV32rr $edi, implicit-def $r15
+ DBG_VALUE $r14d, $noreg, !17, !DIExpression(), debug-location !21
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !20
+ DBG_VALUE $r15d, $noreg, !15, !DIExpression(), debug-location !19
+ dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !23
+ CALL64pcrel32 @getVal, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !23
+ DBG_VALUE $eax, $noreg, !18, !DIExpression(), debug-location !24
+ MOV32mr $rsp, 1, $noreg, 12, $noreg, killed renamable $eax, debug-location !24 :: (store 4 into %ir.local1)
+ renamable $r8d = LEA64_32r killed renamable $r14, 1, $noreg, 3, $noreg, debug-location !24
+ renamable $r9d = LEA64_32r killed renamable $r15, 1, renamable $rbx, 0, $noreg, debug-location !24
+ DBG_VALUE $rsp, $noreg, !18, !DIExpression(DW_OP_plus_uconst, 12, DW_OP_deref), debug-location !24
+ renamable $rdi = LEA64r $rsp, 1, $noreg, 12, $noreg
+ $esi = MOV32rr $ebx, implicit killed $rbx, debug-location !24
+ $edx = MOV32ri 10, debug-location !24
+ $ecx = MOV32ri 15, debug-location !24
+ CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $esi, implicit $edx, implicit killed $ecx, implicit $r8d, implicit $r9d, implicit-def $rsp, implicit-def $ssp, debug-location !24
+ $rsp = frame-destroy ADD64ri8 $rsp, 16, implicit-def dead $eflags, debug-location !24
+ CFI_INSTRUCTION def_cfa_offset 32, debug-location !24
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !24
+ CFI_INSTRUCTION def_cfa_offset 24, debug-location !24
+ $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !24
+ CFI_INSTRUCTION def_cfa_offset 16, debug-location !24
+ $r15 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !24
+ CFI_INSTRUCTION def_cfa_offset 8, debug-location !24
+ RETQ debug-location !24
+
+...
; REQUIRES: object-emission
; RUN: %llc_dwarf -mtriple=x86_64-- < %s -o - | FileCheck %s -check-prefix=ASM
-; RUN: %llc_dwarf -mtriple=x86_64-- < %s -filetype=obj -o %t.o
+; RUN: %llc_dwarf -debugger-tune=lldb -mtriple=x86_64-- < %s -filetype=obj -o %t.o
; RUN: llvm-dwarfdump %t.o -o - | FileCheck %s -check-prefix=OBJ -implicit-check-not=DW_TAG_call_site
; RUN: llvm-dwarfdump -verify %t.o 2>&1 | FileCheck %s -check-prefix=VERIFY
; RUN: llvm-dwarfdump -statistics %t.o | FileCheck %s -check-prefix=STATS
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis -o /dev/null
; VERIFY: No errors.
-; STATS: "call site entries":5
+; STATS: "call site DIEs":6
@sink = global i32 0, align 4, !dbg !0
; OBJ: DW_TAG_call_site
; OBJ: DW_AT_call_origin ([[foo_sp]])
; OBJ: DW_AT_call_return_pc
+; OBJ: DW_TAG_call_site
+; OBJ: DW_AT_call_target
+; OBJ: DW_AT_call_return_pc
define i32 @main() !dbg !29 {
entry:
call void @_Z3foov(), !dbg !32
--- /dev/null
+; RUN: llc -debug-entry-values %s -o - -filetype=obj \
+; RUN: | llvm-dwarfdump -statistics - | FileCheck %s
+;
+; The LLVM IR file was generated on this source code by using
+; option '-femit-param-entry-values'.
+;
+; extern void foo(int *a, int b, int c, int d, int e, int f);
+; extern int getVal();
+;
+; void baa(int arg1, int arg2, int arg3) {
+; int local1 = getVal();
+; foo(&local1, arg2, 10, 15, arg3 + 3, arg1 + arg2);
+; }
+;
+; CHECK: "call site DIEs":2
+; CHECK-SAME: "call site parameter DIEs":6
+;
+; ModuleID = 'test.c'
+source_filename = "test.c"
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind uwtable
+define dso_local void @baa(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr #0 !dbg !10 {
+entry:
+ %local1 = alloca i32, align 4
+ call void @llvm.dbg.value(metadata i32 %arg1, metadata !15, metadata !DIExpression()), !dbg !19
+ call void @llvm.dbg.value(metadata i32 %arg2, metadata !16, metadata !DIExpression()), !dbg !20
+ call void @llvm.dbg.value(metadata i32 %arg3, metadata !17, metadata !DIExpression()), !dbg !21
+ %0 = bitcast i32* %local1 to i8*, !dbg !22
+ %call = tail call i32 (...) @getVal(), !dbg !23
+ call void @llvm.dbg.value(metadata i32 %call, metadata !18, metadata !DIExpression()), !dbg !24
+ store i32 %call, i32* %local1, align 4, !dbg !24
+ %add = add nsw i32 %arg3, 3, !dbg !24
+ %add1 = add nsw i32 %arg2, %arg1, !dbg !24
+ call void @llvm.dbg.value(metadata i32* %local1, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !24
+ call void @foo(i32* nonnull %local1, i32 %arg2, i32 10, i32 15, i32 %add, i32 %add1), !dbg !24
+ ret void, !dbg !24
+}
+
+declare !dbg !4 dso_local i32 @getVal(...) local_unnamed_addr
+
+declare !dbg !5 dso_local void @foo(i32*, i32, i32, i32, i32, i32) local_unnamed_addr
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!6, !7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
+!1 = !DIFile(filename: "test.c", directory: "/dir")
+!2 = !{}
+!3 = !{!4, !5}
+!4 = !DISubprogram(name: "getVal", scope: !1, file: !1, line: 2, spFlags: DISPFlagOptimized, retainedNodes: !2)
+!5 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{i32 1, !"wchar_size", i32 4}
+!9 = !{!"clang version 9.0.0"}
+!10 = distinct !DISubprogram(name: "baa", scope: !1, file: !1, line: 4, type: !11, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !14)
+!11 = !DISubroutineType(types: !12)
+!12 = !{null, !13, !13, !13}
+!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!14 = !{!15, !16, !17, !18}
+!15 = !DILocalVariable(name: "arg1", arg: 1, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+!16 = !DILocalVariable(name: "arg2", arg: 2, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+!17 = !DILocalVariable(name: "arg3", arg: 3, scope: !10, file: !1, line: 4, type: !13, flags: DIFlagArgumentNotModified)
+!18 = !DILocalVariable(name: "local1", scope: !10, file: !1, line: 5, type: !13)
+!19 = !DILocation(line: 4, column: 14, scope: !10)
+!20 = !DILocation(line: 4, column: 24, scope: !10)
+!21 = !DILocation(line: 4, column: 34, scope: !10)
+!22 = !DILocation(line: 5, column: 3, scope: !10)
+!23 = !DILocation(line: 5, column: 16, scope: !10)
+!24 = !DILocation(line: 5, column: 7, scope: !10)
/// Total number of PC range bytes in each variable's enclosing scope,
/// starting from the first definition of the variable.
unsigned ScopeBytesFromFirstDefinition = 0;
- /// Total number of call site entries (DW_TAG_call_site) or
- /// (DW_AT_call_file & DW_AT_call_line).
+ /// Total number of call site entries (DW_AT_call_file & DW_AT_call_line).
unsigned CallSiteEntries = 0;
+ /// Total number of call site DIEs (DW_TAG_call_site).
+ unsigned CallSiteDIEs = 0;
+ /// Total number of call site parameter DIEs (DW_TAG_call_site_parameter).
+ unsigned CallSiteParamDIEs = 0;
/// Total byte size of concrete functions. This byte size includes
/// inline functions contained in the concrete functions.
uint64_t FunctionSize = 0;
uint64_t BytesCovered = 0;
uint64_t OffsetToFirstDefinition = 0;
- if (Die.getTag() == dwarf::DW_TAG_call_site) {
- GlobalStats.CallSiteEntries++;
+ if (Die.getTag() == dwarf::DW_TAG_call_site ||
+ Die.getTag() == dwarf::DW_TAG_GNU_call_site) {
+ GlobalStats.CallSiteDIEs++;
+ return;
+ }
+
+ if (Die.getTag() == dwarf::DW_TAG_call_site_parameter ||
+ Die.getTag() == dwarf::DW_TAG_GNU_call_site_parameter) {
+ GlobalStats.CallSiteParamDIEs++;
return;
}
printDatum(OS, "source variables", VarParamTotal);
printDatum(OS, "variables with location", VarParamWithLoc);
printDatum(OS, "call site entries", GlobalStats.CallSiteEntries);
+ printDatum(OS, "call site DIEs", GlobalStats.CallSiteDIEs);
+ printDatum(OS, "call site parameter DIEs", GlobalStats.CallSiteParamDIEs);
printDatum(OS, "scope bytes total",
GlobalStats.ScopeBytesFromFirstDefinition);
printDatum(OS, "scope bytes covered", GlobalStats.ScopeBytesCovered);
projects / platform / upstream / llvm.git / commitdiff