diff options
Diffstat (limited to 'include/llvm/CodeGen/AsmPrinter.h')
| -rw-r--r-- | include/llvm/CodeGen/AsmPrinter.h | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h index 60bbc9aaa5bd..b8944a668000 100644 --- a/include/llvm/CodeGen/AsmPrinter.h +++ b/include/llvm/CodeGen/AsmPrinter.h @@ -43,11 +43,11 @@ class DIE; class DIEAbbrev; class DwarfDebug; class GCMetadataPrinter; +class GCStrategy; class GlobalIndirectSymbol; class GlobalObject; class GlobalValue; class GlobalVariable; -class GCStrategy; class MachineBasicBlock; class MachineConstantPoolValue; class MachineFunction; @@ -58,6 +58,7 @@ class MachineModuleInfo; class MachineOptimizationRemarkEmitter; class MCAsmInfo; class MCCFIInstruction; +struct MCCodePaddingContext; class MCContext; class MCExpr; class MCInst; @@ -76,11 +77,9 @@ class TargetMachine; class AsmPrinter : public MachineFunctionPass { public: /// Target machine description. - /// TargetMachine &TM; /// Target Asm Printer information. - /// const MCAsmInfo *MAI; /// This is the context for the output file that we are streaming. This owns @@ -103,7 +102,6 @@ public: /// The symbol for the current function. This is recalculated at the beginning /// of each call to runOnMachineFunction(). - /// MCSymbol *CurrentFnSym = nullptr; /// The symbol used to represent the start of the current function for the @@ -116,7 +114,7 @@ public: using GOTEquivUsePair = std::pair<const GlobalVariable *, unsigned>; MapVector<const MCSymbol *, GOTEquivUsePair> GlobalGOTEquivs; - /// Enable print [latency:throughput] in output + /// Enable print [latency:throughput] in output. bool EnablePrintSchedInfo = false; private: @@ -128,8 +126,8 @@ private: void *GCMetadataPrinters = nullptr; // Really a DenseMap. /// Emit comments in assembly output if this is true. - /// bool VerboseAsm; + static char ID; /// If VerboseAsm is set, a pointer to the loop info for this function. @@ -149,6 +147,7 @@ private: TimerDescription(TimerDescription), TimerGroupName(TimerGroupName), TimerGroupDescription(TimerGroupDescription) {} }; + /// A vector of all debug/EH info emitters we should use. This vector /// maintains ownership of the emitters. SmallVector<HandlerInfo, 1> Handlers; @@ -187,11 +186,9 @@ public: bool isPositionIndependent() const; /// Return true if assembly output should contain comments. - /// bool isVerbose() const { return VerboseAsm; } /// Return a unique ID for the current function. - /// unsigned getFunctionNumber() const; MCSymbol *getFunctionBegin() const { return CurrentFnBegin; } @@ -235,13 +232,15 @@ public: // The table will contain these structs that point to the sled, the function // containing the sled, and what kind of sled (and whether they should always - // be instrumented). + // be instrumented). We also use a version identifier that the runtime can use + // to decide what to do with the sled, depending on the version of the sled. struct XRayFunctionEntry { const MCSymbol *Sled; const MCSymbol *Function; SledKind Kind; bool AlwaysInstrument; const class Function *Fn; + uint8_t Version; void emit(int, MCStreamer *, const MCSymbol *) const; }; @@ -249,8 +248,12 @@ public: // All the sleds to be emitted. SmallVector<XRayFunctionEntry, 4> Sleds; + // A unique ID used for ELF sections associated with a particular function. + unsigned XRayFnUniqueID = 0; + // Helper function to record a given XRay sled. - void recordSled(MCSymbol *Sled, const MachineInstr &MI, SledKind Kind); + void recordSled(MCSymbol *Sled, const MachineInstr &MI, SledKind Kind, + uint8_t Version = 0); /// Emit a table with all XRay instrumentation points. void emitXRayTable(); @@ -260,7 +263,6 @@ public: //===------------------------------------------------------------------===// /// Record analysis usage. - /// void getAnalysisUsage(AnalysisUsage &AU) const override; /// Set up the AsmPrinter when we are working on a new module. If your pass @@ -293,8 +295,10 @@ public: void emitFrameAlloc(const MachineInstr &MI); + void emitStackSizeSection(const MachineFunction &MF); + enum CFIMoveType { CFI_M_None, CFI_M_EH, CFI_M_Debug }; - CFIMoveType needsCFIMoves(); + CFIMoveType needsCFIMoves() const; /// Returns false if needsCFIMoves() == CFI_M_EH for any function /// in the module. @@ -305,12 +309,10 @@ public: /// Print to the current output stream assembly representations of the /// constants in the constant pool MCP. This is used to print out constants /// which have been "spilled to memory" by the code generator. - /// virtual void EmitConstantPool(); /// Print assembly representations of the jump tables used by the current /// function to the current output stream. - /// virtual void EmitJumpTableInfo(); /// Emit the specified global variable to the .s file. @@ -325,7 +327,6 @@ public: /// global value is specified, and if that global has an explicit alignment /// requested, it will override the alignment request if required for /// correctness. - /// void EmitAlignment(unsigned NumBits, const GlobalObject *GO = nullptr) const; /// Lower the specified LLVM Constant to an MCExpr. @@ -379,7 +380,7 @@ public: virtual void EmitBasicBlockStart(const MachineBasicBlock &MBB) const; /// Targets can override this to emit stuff at the end of a basic block. - virtual void EmitBasicBlockEnd(const MachineBasicBlock &MBB) {} + virtual void EmitBasicBlockEnd(const MachineBasicBlock &MBB); /// Targets should implement this to emit instructions. virtual void EmitInstruction(const MachineInstr *) { @@ -443,15 +444,12 @@ public: void printOffset(int64_t Offset, raw_ostream &OS) const; /// Emit a byte directive and value. - /// void EmitInt8(int Value) const; /// Emit a short directive and value. - /// void EmitInt16(int Value) const; /// Emit a long directive and value. - /// void EmitInt32(int Value) const; /// Emit something like ".long Hi-Lo" where the size in bytes of the directive @@ -481,8 +479,12 @@ public: void EmitSLEB128(int64_t Value, const char *Desc = nullptr) const; /// Emit the specified unsigned leb128 value. - void EmitULEB128(uint64_t Value, const char *Desc = nullptr, - unsigned PadTo = 0) const; + void EmitULEB128(uint64_t Value, const char *Desc = nullptr) const; + + /// Emit the specified unsigned leb128 value padded to a specific number + /// bytes + void EmitPaddedULEB128(uint64_t Value, unsigned PadTo, + const char *Desc = nullptr) const; /// Emit a .byte 42 directive that corresponds to an encoding. If verbose /// assembly output is enabled, we output comments describing the encoding. @@ -622,10 +624,13 @@ private: void EmitModuleIdents(Module &M); void EmitXXStructorList(const DataLayout &DL, const Constant *List, bool isCtor); + GCMetadataPrinter *GetOrCreateGCPrinter(GCStrategy &C); /// Emit GlobalAlias or GlobalIFunc. void emitGlobalIndirectSymbol(Module &M, const GlobalIndirectSymbol& GIS); + void setupCodePaddingContext(const MachineBasicBlock &MBB, + MCCodePaddingContext &Context) const; }; } // end namespace llvm |