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Reland "[DwarfDebug] Dump call site debug info"
The build failure found after the rL365467 has been resolved. Differential Revision: https://reviews.llvm.org/D60716 llvm-svn: 367446
This commit is contained in:
Djordje Todorovic
parent
552f8fc59c
commit
30604a8ec2
@ -4769,6 +4769,10 @@ The current supported opcode vocabulary is limited:
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``DW_OP_entry_value`` may also appear after the ``AsmPrinter`` pass when
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a call site parameter value (``DW_AT_call_site_parameter_value``)
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is represented as entry value of the parameter.
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- ``DW_OP_breg`` (or ``DW_OP_bregx``) represents a content on the provided
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signed offset of the specified register. The opcode is only generated by the
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``AsmPrinter`` pass to describe call site parameter value which requires an
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expression over two registers.
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DWARF specifies three kinds of simple location descriptions: Register, memory,
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and implicit location descriptions. Note that a location description is
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@ -60,6 +60,8 @@ class TargetSubtargetInfo;
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template <class T> class SmallVectorImpl;
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using ParamLoadedValue = std::pair<const MachineOperand*, DIExpression*>;
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//---------------------------------------------------------------------------
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///
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/// TargetInstrInfo - Interface to description of machine instruction set
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@ -1691,6 +1693,11 @@ public:
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return false;
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}
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/// Produce the expression describing the \p MI loading a value into
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/// the parameter's forwarding register.
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virtual Optional<ParamLoadedValue>
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describeLoadedValue(const MachineInstr &MI) const;
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private:
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unsigned CallFrameSetupOpcode, CallFrameDestroyOpcode;
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unsigned CatchRetOpcode;
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@ -535,6 +535,11 @@ public:
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return false;
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}
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/// This is a wrapper around getCallPreservedMask().
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/// Return true if the register is preserved after the call.
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virtual bool isCalleeSavedPhysReg(unsigned PhysReg,
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const MachineFunction &MF) const;
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/// Prior to adding the live-out mask to a stackmap or patchpoint
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/// instruction, provide the target the opportunity to adjust it (mainly to
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/// remove pseudo-registers that should be ignored).
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@ -892,32 +892,106 @@ void DwarfCompileUnit::constructAbstractSubprogramScopeDIE(
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ContextCU->addDIEEntry(*AbsDef, dwarf::DW_AT_object_pointer, *ObjectPointer);
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}
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DIE &DwarfCompileUnit::constructCallSiteEntryDIE(DIE &ScopeDIE,
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const DISubprogram &CalleeSP,
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bool IsTail,
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const MCExpr *PCOffset) {
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dwarf::Tag DwarfCompileUnit::getDwarf5OrGNUCallSiteTag(dwarf::Tag Tag) const {
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bool ApplyGNUExtensions = DD->getDwarfVersion() == 4 && DD->tuneForGDB();
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if (!ApplyGNUExtensions)
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return Tag;
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switch (Tag) {
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case dwarf::DW_TAG_call_site:
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return dwarf::DW_TAG_GNU_call_site;
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case dwarf::DW_TAG_call_site_parameter:
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return dwarf::DW_TAG_GNU_call_site_parameter;
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default:
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llvm_unreachable("unhandled call site tag");
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}
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}
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dwarf::Attribute
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DwarfCompileUnit::getDwarf5OrGNUCallSiteAttr(dwarf::Attribute Attr) const {
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bool ApplyGNUExtensions = DD->getDwarfVersion() == 4 && DD->tuneForGDB();
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if (!ApplyGNUExtensions)
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return Attr;
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switch (Attr) {
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case dwarf::DW_AT_call_all_calls:
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return dwarf::DW_AT_GNU_all_call_sites;
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case dwarf::DW_AT_call_target:
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return dwarf::DW_AT_GNU_call_site_target;
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case dwarf::DW_AT_call_origin:
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return dwarf::DW_AT_abstract_origin;
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case dwarf::DW_AT_call_pc:
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return dwarf::DW_AT_low_pc;
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case dwarf::DW_AT_call_value:
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return dwarf::DW_AT_GNU_call_site_value;
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case dwarf::DW_AT_call_tail_call:
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return dwarf::DW_AT_GNU_tail_call;
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default:
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llvm_unreachable("unhandled call site attribute");
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}
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}
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DIE &DwarfCompileUnit::constructCallSiteEntryDIE(
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DIE &ScopeDIE, const DISubprogram *CalleeSP, bool IsTail,
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const MCSymbol *PCAddr, const MCExpr *PCOffset, unsigned CallReg) {
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// Insert a call site entry DIE within ScopeDIE.
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DIE &CallSiteDIE =
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createAndAddDIE(dwarf::DW_TAG_call_site, ScopeDIE, nullptr);
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DIE &CallSiteDIE = createAndAddDIE(
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getDwarf5OrGNUCallSiteTag(dwarf::DW_TAG_call_site), ScopeDIE, nullptr);
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// For the purposes of showing tail call frames in backtraces, a key piece of
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// information is DW_AT_call_origin, a pointer to the callee DIE.
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DIE *CalleeDIE = getOrCreateSubprogramDIE(&CalleeSP);
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assert(CalleeDIE && "Could not create DIE for call site entry origin");
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addDIEEntry(CallSiteDIE, dwarf::DW_AT_call_origin, *CalleeDIE);
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if (IsTail) {
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// Attach DW_AT_call_tail_call to tail calls for standards compliance.
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addFlag(CallSiteDIE, dwarf::DW_AT_call_tail_call);
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if (CallReg) {
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// Indirect call.
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addAddress(CallSiteDIE,
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getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_target),
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MachineLocation(CallReg));
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} else {
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// Attach the return PC to allow the debugger to disambiguate call paths
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// from one function to another.
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DIE *CalleeDIE = getOrCreateSubprogramDIE(CalleeSP);
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assert(CalleeDIE && "Could not create DIE for call site entry origin");
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addDIEEntry(CallSiteDIE,
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getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_origin),
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*CalleeDIE);
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}
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if (IsTail)
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// Attach DW_AT_call_tail_call to tail calls for standards compliance.
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addFlag(CallSiteDIE,
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getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_tail_call));
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// Attach the return PC to allow the debugger to disambiguate call paths
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// from one function to another.
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if (DD->getDwarfVersion() == 4 && DD->tuneForGDB()) {
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assert(PCAddr && "Missing PC information for a call");
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addLabelAddress(CallSiteDIE, dwarf::DW_AT_low_pc, PCAddr);
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} else if (!IsTail || DD->tuneForGDB()) {
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assert(PCOffset && "Missing return PC information for a call");
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addAddressExpr(CallSiteDIE, dwarf::DW_AT_call_return_pc, PCOffset);
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}
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return CallSiteDIE;
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}
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void DwarfCompileUnit::constructCallSiteParmEntryDIEs(
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DIE &CallSiteDIE, SmallVector<DbgCallSiteParam, 4> &Params) {
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for (const auto &Param : Params) {
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unsigned Register = Param.getRegister();
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auto CallSiteDieParam =
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DIE::get(DIEValueAllocator,
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getDwarf5OrGNUCallSiteTag(dwarf::DW_TAG_call_site_parameter));
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insertDIE(CallSiteDieParam);
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addAddress(*CallSiteDieParam, dwarf::DW_AT_location,
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MachineLocation(Register));
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DIELoc *Loc = new (DIEValueAllocator) DIELoc;
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DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
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DwarfExpr.setCallSiteParamValueFlag();
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DwarfDebug::emitDebugLocValue(*Asm, nullptr, Param.getValue(), DwarfExpr);
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addBlock(*CallSiteDieParam,
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getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_value),
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DwarfExpr.finalize());
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CallSiteDIE.addChild(CallSiteDieParam);
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}
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}
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DIE *DwarfCompileUnit::constructImportedEntityDIE(
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const DIImportedEntity *Module) {
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DIE *IMDie = DIE::get(DIEValueAllocator, (dwarf::Tag)Module->getTag());
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@ -227,12 +227,33 @@ public:
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void constructAbstractSubprogramScopeDIE(LexicalScope *Scope);
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/// This takes the official DWARF 5 tag and returns the appropriate
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/// GNU tag if needed.
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dwarf::Tag getDwarf5OrGNUCallSiteTag(dwarf::Tag Tag) const;
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/// This takes the official DWARF 5 attribute and returns the appropriate
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/// GNU attribute if needed.
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dwarf::Attribute getDwarf5OrGNUCallSiteAttr(dwarf::Attribute Attr) const;
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/// Construct a call site entry DIE describing a call within \p Scope to a
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/// callee described by \p CalleeSP. \p IsTail specifies whether the call is
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/// a tail call. \p PCOffset must be non-zero for non-tail calls or be the
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/// callee described by \p CalleeSP.
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/// \p IsTail specifies whether the call is a tail call.
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/// \p PCAddr (used for GDB + DWARF 4 tuning) points to the PC value after
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/// the call instruction.
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/// \p PCOffset (used for cases other than GDB + DWARF 4 tuning) must be
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/// non-zero for non-tail calls (in the case of non-gdb tuning, since for
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/// GDB + DWARF 5 tuning we still generate PC info for tail calls) or be the
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/// function-local offset to PC value after the call instruction.
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DIE &constructCallSiteEntryDIE(DIE &ScopeDIE, const DISubprogram &CalleeSP,
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bool IsTail, const MCExpr *PCOffset);
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/// \p CallReg is a register location for an indirect call. For direct calls
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/// the \p CallReg is set to 0.
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DIE &constructCallSiteEntryDIE(DIE &ScopeDIE, const DISubprogram *CalleeSP,
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bool IsTail, const MCSymbol *PCAddr,
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const MCExpr *PCOffset, unsigned CallReg);
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/// Construct call site parameter DIEs for the \p CallSiteDIE. The \p Params
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/// were collected by the \ref collectCallSiteParameters.
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/// Note: The order of parameters does not matter, since debuggers recognize
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/// call site parameters by the DW_AT_location attribute.
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void constructCallSiteParmEntryDIEs(DIE &CallSiteDIE,
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SmallVector<DbgCallSiteParam, 4> &Params);
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/// Construct import_module DIE.
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DIE *constructImportedEntityDIE(const DIImportedEntity *Module);
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@ -26,6 +26,7 @@
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/BinaryFormat/Dwarf.h"
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@ -39,6 +40,7 @@
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/MachineOperand.h"
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#include "llvm/CodeGen/TargetInstrInfo.h"
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#include "llvm/CodeGen/TargetLowering.h"
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#include "llvm/CodeGen/TargetRegisterInfo.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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#include "llvm/DebugInfo/DWARF/DWARFExpression.h"
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@ -83,6 +85,8 @@ using namespace llvm;
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#define DEBUG_TYPE "dwarfdebug"
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STATISTIC(NumCSParams, "Number of dbg call site params created");
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static cl::opt<bool>
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DisableDebugInfoPrinting("disable-debug-info-print", cl::Hidden,
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cl::desc("Disable debug info printing"));
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@ -551,6 +555,146 @@ void DwarfDebug::constructAbstractSubprogramScopeDIE(DwarfCompileUnit &SrcCU,
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}
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}
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/// Try to interpret values loaded into registers that forward parameters
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/// for \p CallMI. Store parameters with interpreted value into \p Params.
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static void collectCallSiteParameters(const MachineInstr *CallMI,
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ParamSet &Params) {
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auto *MF = CallMI->getMF();
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auto CalleesMap = MF->getCallSitesInfo();
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auto CallFwdRegsInfo = CalleesMap.find(CallMI);
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// There is no information for the call instruction.
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if (CallFwdRegsInfo == CalleesMap.end())
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return;
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auto *MBB = CallMI->getParent();
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const auto &TRI = MF->getSubtarget().getRegisterInfo();
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const auto &TII = MF->getSubtarget().getInstrInfo();
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const auto &TLI = MF->getSubtarget().getTargetLowering();
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// Skip the call instruction.
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auto I = std::next(CallMI->getReverseIterator());
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DenseSet<unsigned> ForwardedRegWorklist;
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// Add all the forwarding registers into the ForwardedRegWorklist.
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for (auto ArgReg : CallFwdRegsInfo->second) {
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bool InsertedReg = ForwardedRegWorklist.insert(ArgReg.Reg).second;
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assert(InsertedReg && "Single register used to forward two arguments?");
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}
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// We erase, from the ForwardedRegWorklist, those forwarding registers for
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// which we successfully describe a loaded value (by using
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// the describeLoadedValue()). For those remaining arguments in the working
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// list, for which we do not describe a loaded value by
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// the describeLoadedValue(), we try to generate an entry value expression
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// for their call site value desctipion, if the call is within the entry MBB.
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// The RegsForEntryValues maps a forwarding register into the register holding
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// the entry value.
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// TODO: Handle situations when call site parameter value can be described
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// as the entry value within basic blocks other then the first one.
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bool ShouldTryEmitEntryVals = MBB->getIterator() == MF->begin();
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DenseMap<unsigned, unsigned> RegsForEntryValues;
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// If the MI is an instruction defining a parameter's forwarding register,
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// add it into the Defs. If the MI clobbers more then one register, we use
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// the Defs in order to remove all the registers from
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// the ForwardedRegWorklist, since we do not support such situations now.
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auto getForwardingRegsDefinedByMI = [&](const MachineInstr &MI,
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SmallVectorImpl<unsigned> &Defs) {
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if (MI.isDebugInstr())
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return;
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for (const MachineOperand &MO : MI.operands()) {
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if (MO.isReg() && MO.isDef() && TRI->isPhysicalRegister(MO.getReg())) {
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for (auto FwdReg : ForwardedRegWorklist) {
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if (TRI->regsOverlap(FwdReg, MO.getReg())) {
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Defs.push_back(FwdReg);
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break;
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}
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}
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}
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}
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};
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auto finishCallSiteParam = [&](DbgValueLoc DbgLocVal, unsigned Reg) {
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unsigned FwdReg = Reg;
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if (ShouldTryEmitEntryVals) {
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auto EntryValReg = RegsForEntryValues.find(Reg);
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if (EntryValReg != RegsForEntryValues.end())
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FwdReg = EntryValReg->second;
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}
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DbgCallSiteParam CSParm(FwdReg, DbgLocVal);
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Params.push_back(CSParm);
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++NumCSParams;
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};
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// Search for a loading value in forwaring registers.
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for (; I != MBB->rend(); ++I) {
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// If the next instruction is a call we can not interpret parameter's
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// forwarding registers or we finished the interpretation of all parameters.
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if (I->isCall())
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return;
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if (ForwardedRegWorklist.empty())
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return;
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SmallVector<unsigned, 4> Defs;
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getForwardingRegsDefinedByMI(*I, Defs);
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if (Defs.empty())
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continue;
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// If the MI clobbers more then one forwarding register we must remove
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// all of them from the working list.
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for (auto Reg : Defs)
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ForwardedRegWorklist.erase(Reg);
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if (I->getNumDefs() != 1)
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continue;
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unsigned Reg = Defs[0];
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if (auto ParamValue = TII->describeLoadedValue(*I)) {
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if (ParamValue->first->isImm()) {
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unsigned Val = ParamValue->first->getImm();
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DbgValueLoc DbgLocVal(ParamValue->second, Val);
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finishCallSiteParam(DbgLocVal, Reg);
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} else if (ParamValue->first->isReg()) {
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unsigned RegLoc = ParamValue->first->getReg();
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unsigned SP = TLI->getStackPointerRegisterToSaveRestore();
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unsigned FP = TRI->getFrameRegister(*MF);
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bool IsSPorFP = (RegLoc == SP) || (RegLoc == FP);
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if (TRI->isCalleeSavedPhysReg(RegLoc, *MF) || IsSPorFP) {
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DbgValueLoc DbgLocVal(ParamValue->second,
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MachineLocation(RegLoc,
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/*IsIndirect=*/IsSPorFP));
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finishCallSiteParam(DbgLocVal, Reg);
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} else if (ShouldTryEmitEntryVals) {
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ForwardedRegWorklist.insert(RegLoc);
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RegsForEntryValues[RegLoc] = Reg;
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}
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}
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}
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}
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// Emit the call site parameter's value as an entry value.
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if (ShouldTryEmitEntryVals) {
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// Create an entry value expression where the expression following
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// the 'DW_OP_entry_value' will be the size of 1 (a register operation).
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DIExpression *EntryExpr = DIExpression::get(MF->getFunction().getContext(),
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{dwarf::DW_OP_entry_value, 1});
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for (auto RegEntry : ForwardedRegWorklist) {
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unsigned FwdReg = RegEntry;
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auto EntryValReg = RegsForEntryValues.find(RegEntry);
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if (EntryValReg != RegsForEntryValues.end())
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FwdReg = EntryValReg->second;
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DbgValueLoc DbgLocVal(EntryExpr, MachineLocation(RegEntry));
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DbgCallSiteParam CSParm(FwdReg, DbgLocVal);
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Params.push_back(CSParm);
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++NumCSParams;
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}
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}
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}
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void DwarfDebug::constructCallSiteEntryDIEs(const DISubprogram &SP,
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DwarfCompileUnit &CU, DIE &ScopeDIE,
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const MachineFunction &MF) {
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@ -563,10 +707,12 @@ void DwarfDebug::constructCallSiteEntryDIEs(const DISubprogram &SP,
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// for both tail and non-tail calls. Don't use DW_AT_call_all_source_calls
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// because one of its requirements is not met: call site entries for
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// optimized-out calls are elided.
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CU.addFlag(ScopeDIE, dwarf::DW_AT_call_all_calls);
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CU.addFlag(ScopeDIE,
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CU.getDwarf5OrGNUCallSiteAttr(dwarf::DW_AT_call_all_calls));
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const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
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assert(TII && "TargetInstrInfo not found: cannot label tail calls");
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bool ApplyGNUExtensions = getDwarfVersion() == 4 && tuneForGDB();
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// Emit call site entries for each call or tail call in the function.
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for (const MachineBasicBlock &MBB : MF) {
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@ -581,30 +727,66 @@ void DwarfDebug::constructCallSiteEntryDIEs(const DISubprogram &SP,
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return;
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// If this is a direct call, find the callee's subprogram.
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// In the case of an indirect call find the register that holds
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// the callee.
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const MachineOperand &CalleeOp = MI.getOperand(0);
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if (!CalleeOp.isGlobal())
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continue;
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const Function *CalleeDecl = dyn_cast<Function>(CalleeOp.getGlobal());
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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);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -254,6 +254,25 @@ public:
|
||||
}
|
||||
};
|
||||
|
||||
/// 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) {}
|
||||
|
||||
@ -241,15 +241,19 @@ bool DwarfExpression::addMachineRegExpression(const TargetRegisterInfo &TRI,
|
||||
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();
|
||||
@ -340,7 +344,17 @@ void DwarfExpression::addExpression(DIExpressionCursor &&ExprCursor,
|
||||
|
||||
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);
|
||||
@ -389,7 +403,7 @@ void DwarfExpression::addExpression(DIExpressionCursor &&ExprCursor,
|
||||
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());
|
||||
@ -458,12 +472,21 @@ void DwarfExpression::addExpression(DIExpressionCursor &&ExprCursor,
|
||||
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();
|
||||
}
|
||||
|
||||
@ -120,7 +120,7 @@ protected:
|
||||
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;
|
||||
@ -147,6 +147,10 @@ public:
|
||||
return LocationFlags & EntryValue;
|
||||
}
|
||||
|
||||
bool isParameterValue() {
|
||||
return LocationFlags & CallSiteParamValue;
|
||||
}
|
||||
|
||||
Optional<uint8_t> TagOffset;
|
||||
|
||||
protected:
|
||||
@ -264,6 +268,11 @@ public:
|
||||
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.
|
||||
|
||||
@ -205,6 +205,10 @@ void DwarfUnit::insertDIE(const DINode *Desc, DIE *D) {
|
||||
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,
|
||||
|
||||
@ -127,6 +127,8 @@ public:
|
||||
/// 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);
|
||||
|
||||
|
||||
@ -23,6 +23,7 @@
|
||||
#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"
|
||||
@ -1120,6 +1121,36 @@ bool TargetInstrInfo::hasLowDefLatency(const TargetSchedModel &SchedModel,
|
||||
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,
|
||||
|
||||
@ -433,6 +433,19 @@ TargetRegisterInfo::getRegAllocationHints(unsigned VirtReg,
|
||||
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");
|
||||
}
|
||||
|
||||
@ -733,6 +733,7 @@ bool DWARFAttribute::mayHaveLocationDescription(dwarf::Attribute Attr) {
|
||||
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;
|
||||
|
||||
@ -828,15 +828,23 @@ DIExpression *DIExpression::getImpl(LLVMContext &Context,
|
||||
}
|
||||
|
||||
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;
|
||||
@ -849,8 +857,13 @@ bool DIExpression::isValid() const {
|
||||
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:
|
||||
@ -905,6 +918,8 @@ bool DIExpression::isValid() const {
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
@ -30,7 +30,7 @@
|
||||
#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"
|
||||
@ -7367,6 +7367,92 @@ bool X86InstrInfo::isAssociativeAndCommutative(const MachineInstr &Inst) const {
|
||||
}
|
||||
}
|
||||
|
||||
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,
|
||||
|
||||
@ -527,6 +527,9 @@ public:
|
||||
#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
|
||||
|
||||
202
test/DebugInfo/MIR/X86/dbgcall-site-interpretation.mir
Normal file
202
test/DebugInfo/MIR/X86/dbgcall-site-interpretation.mir
Normal file
@ -0,0 +1,202 @@
|
||||
# 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
|
||||
|
||||
...
|
||||
140
test/DebugInfo/MIR/X86/dbgcall-site-lea-interpretation.mir
Normal file
140
test/DebugInfo/MIR/X86/dbgcall-site-lea-interpretation.mir
Normal file
@ -0,0 +1,140 @@
|
||||
# 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
|
||||
|
||||
...
|
||||
159
test/DebugInfo/MIR/X86/debug-call-site-param.mir
Normal file
159
test/DebugInfo/MIR/X86/debug-call-site-param.mir
Normal file
@ -0,0 +1,159 @@
|
||||
# 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
|
||||
|
||||
...
|
||||
@ -14,14 +14,14 @@
|
||||
|
||||
; 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
|
||||
|
||||
@ -85,6 +85,9 @@ entry:
|
||||
; 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
|
||||
|
||||
76
test/tools/llvm-dwarfdump/X86/stats-dbg-callsite-info.ll
Normal file
76
test/tools/llvm-dwarfdump/X86/stats-dbg-callsite-info.ll
Normal file
@ -0,0 +1,76 @@
|
||||
; 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)
|
||||
@ -56,9 +56,12 @@ struct GlobalStats {
|
||||
/// 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;
|
||||
@ -94,8 +97,15 @@ static void collectStatsForDie(DWARFDie Die, std::string FnPrefix,
|
||||
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;
|
||||
}
|
||||
|
||||
@ -387,6 +397,8 @@ bool collectStatsForObjectFile(ObjectFile &Obj, DWARFContext &DICtx,
|
||||
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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user