//===------------------- StackMaps.h - StackMaps ----------------*- C++ -*-===//
-
//
// The LLVM Compiler Infrastructure
//
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/Debug.h"
#include <map>
#include <vector>
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) {}
-
- void MarkInvalid() { Reg = 0; }
-
- // 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
StackMaps(AsmPrinter &AP);
+ void reset() {
+ CSInfos.clear();
+ ConstPool.clear();
+ FnStackSize.clear();
+ }
+
/// \brief Generate a stackmap record for a stackmap instruction.
///
/// MI must be a raw STACKMAP, not a PATCHPOINT.
/// \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.
private:
static const char *WSMP;
-
typedef SmallVector<Location, 8> LocationVec;
typedef SmallVector<LiveOutReg, 8> LiveOutVec;
- typedef MapVector<int64_t, int64_t> ConstantPool;
+ typedef MapVector<uint64_t, uint64_t> ConstantPool;
typedef MapVector<const MCSymbol *, uint64_t> FnStackSizeMap;
struct CallsiteInfo {
LiveOutVec LiveOuts;
CallsiteInfo() : CSOffsetExpr(nullptr), ID(0) {}
CallsiteInfo(const MCExpr *CSOffsetExpr, uint64_t ID,
- LocationVec &Locations, LiveOutVec &LiveOuts)
- : CSOffsetExpr(CSOffsetExpr), ID(ID), Locations(Locations),
- LiveOuts(LiveOuts) {}
+ LocationVec &&Locations, LiveOutVec &&LiveOuts)
+ : CSOffsetExpr(CSOffsetExpr), ID(ID), Locations(std::move(Locations)),
+ LiveOuts(std::move(LiveOuts)) {}
};
typedef std::vector<CallsiteInfo> CallsiteInfoList;
MachineInstr::const_mop_iterator
parseOperand(MachineInstr::const_mop_iterator MOI,
- MachineInstr::const_mop_iterator MOE,
- LocationVec &Locs, LiveOutVec &LiveOuts) 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,
void emitConstantPoolEntries(MCStreamer &OS);
/// \brief Emit the callsite info for each stackmap/patchpoint intrinsic call.
- void emitCallsiteEntries(MCStreamer &OS, const TargetRegisterInfo *TRI);
-};
+ void emitCallsiteEntries(MCStreamer &OS);
+ void print(raw_ostream &OS);
+ void debug() { print(dbgs()); }
+};
}
#endif
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