//===------------------- StackMaps.h - StackMaps ----------------*- C++ -*-===//
+
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
-#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 <map>
class AsmPrinter;
class MCExpr;
+class MCStreamer;
/// \brief MI-level patchpoint operands.
///
: LocType(LocType), Size(Size), Reg(Reg), Offset(Offset) {}
};
- // Typedef a function pointer for functions that parse sequences of operands
- // and return a Location, plus a new "next" operand iterator.
- typedef std::pair<Location, MachineInstr::const_mop_iterator>
- (*OperandParser)(MachineInstr::const_mop_iterator,
- MachineInstr::const_mop_iterator, const TargetMachine&);
+ struct LiveOutReg {
+ unsigned short Reg;
+ unsigned short RegNo;
+ 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; }
+ };
// OpTypes are used to encode information about the following logical
// operand (which may consist of several MachineOperands) for the
// OpParser.
typedef enum { DirectMemRefOp, IndirectMemRefOp, ConstantOp } OpType;
- StackMaps(AsmPrinter &AP, OperandParser OpParser)
- : AP(AP), OpParser(OpParser) {}
+ StackMaps(AsmPrinter &AP);
/// \brief Generate a stackmap record for a stackmap instruction.
///
void serializeToStackMapSection();
private:
+ static const char *WSMP;
+
typedef SmallVector<Location, 8> LocationVec;
+ typedef SmallVector<LiveOutReg, 8> LiveOutVec;
+ typedef MapVector<int64_t, int64_t> ConstantPool;
+ typedef MapVector<const MCSymbol *, uint64_t> FnStackSizeMap;
struct CallsiteInfo {
const MCExpr *CSOffsetExpr;
- unsigned ID;
+ uint64_t ID;
LocationVec Locations;
- CallsiteInfo() : CSOffsetExpr(0), ID(0) {}
- CallsiteInfo(const MCExpr *CSOffsetExpr, unsigned ID,
- LocationVec Locations)
- : CSOffsetExpr(CSOffsetExpr), ID(ID), Locations(Locations) {}
+ 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) {}
};
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;
- OperandParser OpParser;
CallsiteInfoList CSInfos;
ConstantPool ConstPool;
+ FnStackSizeMap FnStackSize;
+
+ MachineInstr::const_mop_iterator
+ parseOperand(MachineInstr::const_mop_iterator MOI,
+ 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 TargetRegisterInfo *TRI) const;
+
+ /// \brief Parse the register live-out mask and return a vector of live-out
+ /// registers that need to be recorded in the stackmap.
+ LiveOutVec parseRegisterLiveOutMask(const uint32_t *Mask) const;
/// This should be called by the MC lowering code _immediately_ before
/// lowering the MI to an MCInst. It records where the operands for the
/// 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, const TargetRegisterInfo *TRI);
};
}
-#endif // LLVM_STACKMAPS
+#endif