//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_STACKMAPS
-#define LLVM_STACKMAPS
+#ifndef LLVM_CODEGEN_STACKMAPS_H
+#define LLVM_CODEGEN_STACKMAPS_H
+#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Support/Debug.h"
#include <map>
#include <vector>
class AsmPrinter;
class MCExpr;
+class MCStreamer;
/// \brief MI-level patchpoint operands.
///
public:
/// Enumerate the meta operands.
enum { IDPos, NBytesPos, TargetPos, NArgPos, CCPos, MetaEnd };
+
private:
const MachineInstr *MI;
bool HasDef;
bool IsAnyReg;
+
public:
explicit PatchPointOpers(const MachineInstr *MI);
/// Get the operand index of the variable list of non-argument operands.
/// These hold the "live state".
unsigned getVarIdx() const {
- return getMetaIdx() + MetaEnd
- + MI->getOperand(getMetaIdx(NArgPos)).getImm();
+ return getMetaIdx() + MetaEnd +
+ MI->getOperand(getMetaIdx(NArgPos)).getImm();
}
/// Get the index at which stack map locations will be recorded.
unsigned getNextScratchIdx(unsigned StartIdx = 0) const;
};
+/// MI-level Statepoint operands
+///
+/// Statepoint operands take the form:
+/// <id>, <num patch bytes >, <num call arguments>, <call target>,
+/// [call arguments], <StackMaps::ConstantOp>, <calling convention>,
+/// <StackMaps::ConstantOp>, <statepoint flags>,
+/// <StackMaps::ConstantOp>, <num other args>, [other args],
+/// [gc values]
+class StatepointOpers {
+private:
+ // These values are aboolute offsets into the operands of the statepoint
+ // instruction.
+ enum { IDPos, NBytesPos, NCallArgsPos, CallTargetPos, MetaEnd };
+
+ // These values are relative offests from the start of the statepoint meta
+ // arguments (i.e. the end of the call arguments).
+ enum { CCOffset = 1, FlagsOffset = 3, NumVMSArgsOffset = 5 };
+
+public:
+ explicit StatepointOpers(const MachineInstr *MI) : MI(MI) {}
+
+ /// Get starting index of non call related arguments
+ /// (calling convention, statepoint flags, vm state and gc state).
+ unsigned getVarIdx() const {
+ return MI->getOperand(NCallArgsPos).getImm() + MetaEnd;
+ }
+
+ /// Return the ID for the given statepoint.
+ uint64_t getID() const { return MI->getOperand(IDPos).getImm(); }
+
+ /// Return the number of patchable bytes the given statepoint should emit.
+ uint32_t getNumPatchBytes() const {
+ return MI->getOperand(NBytesPos).getImm();
+ }
+
+ /// Returns the target of the underlying call.
+ const MachineOperand &getCallTarget() const {
+ return MI->getOperand(CallTargetPos);
+ }
+
+private:
+ const MachineInstr *MI;
+};
+
class StackMaps {
public:
struct Location {
- enum LocationType { Unprocessed, Register, Direct, Indirect, Constant,
- ConstantIndex };
- LocationType LocType;
+ enum LocationType {
+ Unprocessed,
+ Register,
+ Direct,
+ Indirect,
+ Constant,
+ ConstantIndex
+ };
+ LocationType Type;
unsigned Size;
unsigned Reg;
int64_t Offset;
- Location() : LocType(Unprocessed), Size(0), Reg(0), Offset(0) {}
- Location(LocationType LocType, unsigned Size, unsigned Reg, int64_t Offset)
- : LocType(LocType), Size(Size), Reg(Reg), Offset(Offset) {}
+ Location() : Type(Unprocessed), Size(0), Reg(0), Offset(0) {}
+ Location(LocationType Type, unsigned Size, unsigned Reg, int64_t Offset)
+ : Type(Type), Size(Size), Reg(Reg), Offset(Offset) {}
};
struct LiveOutReg {
unsigned short Reg;
- unsigned short RegNo;
+ unsigned short DwarfRegNum;
unsigned short Size;
- LiveOutReg() : Reg(0), RegNo(0), Size(0) {}
- LiveOutReg(unsigned short Reg, unsigned short RegNo, unsigned short Size)
- : Reg(Reg), RegNo(RegNo), Size(Size) {}
-
- // Only sort by the dwarf register number.
- bool operator< (const LiveOutReg &LO) const { return RegNo < LO.RegNo; }
- static bool isInvalid(const LiveOutReg &LO) { return LO.Reg == 0; }
+ LiveOutReg() : Reg(0), DwarfRegNum(0), Size(0) {}
+ LiveOutReg(unsigned short Reg, unsigned short DwarfRegNum,
+ unsigned short Size)
+ : Reg(Reg), DwarfRegNum(DwarfRegNum), Size(Size) {}
};
// OpTypes are used to encode information about the following logical
// OpParser.
typedef enum { DirectMemRefOp, IndirectMemRefOp, ConstantOp } OpType;
- StackMaps(AsmPrinter &AP) : AP(AP) {}
+ StackMaps(AsmPrinter &AP);
+
+ void reset() {
+ CSInfos.clear();
+ ConstPool.clear();
+ FnStackSize.clear();
+ }
/// \brief Generate a stackmap record for a stackmap instruction.
///
/// \brief Generate a stackmap record for a patchpoint instruction.
void recordPatchPoint(const MachineInstr &MI);
+ /// \brief Generate a stackmap record for a statepoint instruction.
+ void recordStatepoint(const MachineInstr &MI);
+
/// If there is any stack map data, create a stack map section and serialize
/// the map info into it. This clears the stack map data structures
/// afterwards.
void serializeToStackMapSection();
private:
+ static const char *WSMP;
typedef SmallVector<Location, 8> LocationVec;
typedef SmallVector<LiveOutReg, 8> LiveOutVec;
+ typedef MapVector<uint64_t, uint64_t> ConstantPool;
+ typedef MapVector<const MCSymbol *, uint64_t> FnStackSizeMap;
struct CallsiteInfo {
const MCExpr *CSOffsetExpr;
- unsigned ID;
+ uint64_t ID;
LocationVec Locations;
LiveOutVec LiveOuts;
- CallsiteInfo() : CSOffsetExpr(0), ID(0) {}
- CallsiteInfo(const MCExpr *CSOffsetExpr, unsigned ID,
- LocationVec &Locations, LiveOutVec &LiveOuts)
- : CSOffsetExpr(CSOffsetExpr), ID(ID), Locations(Locations),
- LiveOuts(LiveOuts) {}
+ CallsiteInfo() : CSOffsetExpr(nullptr), ID(0) {}
+ CallsiteInfo(const MCExpr *CSOffsetExpr, uint64_t ID,
+ LocationVec &&Locations, LiveOutVec &&LiveOuts)
+ : CSOffsetExpr(CSOffsetExpr), ID(ID), Locations(std::move(Locations)),
+ LiveOuts(std::move(LiveOuts)) {}
};
typedef std::vector<CallsiteInfo> CallsiteInfoList;
- struct ConstantPool {
- private:
- typedef std::map<int64_t, size_t> ConstantsMap;
- std::vector<int64_t> ConstantsList;
- ConstantsMap ConstantIndexes;
-
- public:
- size_t getNumConstants() const { return ConstantsList.size(); }
- int64_t getConstant(size_t Idx) const { return ConstantsList[Idx]; }
- size_t getConstantIndex(int64_t ConstVal) {
- size_t NextIdx = ConstantsList.size();
- ConstantsMap::const_iterator I =
- ConstantIndexes.insert(ConstantIndexes.end(),
- std::make_pair(ConstVal, NextIdx));
- if (I->second == NextIdx)
- ConstantsList.push_back(ConstVal);
- return I->second;
- }
- };
-
AsmPrinter &AP;
CallsiteInfoList CSInfos;
ConstantPool ConstPool;
+ FnStackSizeMap FnStackSize;
- /// Parse
- std::pair<Location, MachineInstr::const_mop_iterator>
+ MachineInstr::const_mop_iterator
parseOperand(MachineInstr::const_mop_iterator MOI,
- MachineInstr::const_mop_iterator MOE) const;
+ MachineInstr::const_mop_iterator MOE, LocationVec &Locs,
+ LiveOutVec &LiveOuts) const;
/// \brief Create a live-out register record for the given register @p Reg.
- LiveOutReg createLiveOutReg(unsigned Reg, const MCRegisterInfo &MCRI,
+ LiveOutReg createLiveOutReg(unsigned Reg,
const TargetRegisterInfo *TRI) const;
/// \brief Parse the register live-out mask and return a vector of live-out
/// instruction are stored, and outputs a label to record the offset of
/// the call from the start of the text section. In special cases (e.g. AnyReg
/// calling convention) the return register is also recorded if requested.
- void recordStackMapOpers(const MachineInstr &MI, uint32_t ID,
+ void recordStackMapOpers(const MachineInstr &MI, uint64_t ID,
MachineInstr::const_mop_iterator MOI,
MachineInstr::const_mop_iterator MOE,
bool recordResult = false);
-};
+ /// \brief Emit the stackmap header.
+ void emitStackmapHeader(MCStreamer &OS);
+
+ /// \brief Emit the function frame record for each function.
+ void emitFunctionFrameRecords(MCStreamer &OS);
+
+ /// \brief Emit the constant pool.
+ void emitConstantPoolEntries(MCStreamer &OS);
+
+ /// \brief Emit the callsite info for each stackmap/patchpoint intrinsic call.
+ void emitCallsiteEntries(MCStreamer &OS);
+
+ void print(raw_ostream &OS);
+ void debug() { print(dbgs()); }
+};
}
-#endif // LLVM_STACKMAPS
+#endif