File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/clang/lib/CodeGen

usr / src / contrib / llvm-project / clang / lib / CodeGen /

📁 ..
📄 ABIInfo.h(5.01 KB)
📄 Address.h(3.28 KB)
📄 BackendUtil.cpp(67.92 KB)
📄 CGAtomic.cpp(85.95 KB)
📄 CGBlocks.cpp(111.14 KB)
📄 CGBlocks.h(8.94 KB)
📄 CGBuilder.h(13.78 KB)
📄 CGBuiltin.cpp(695.8 KB)
📄 CGCUDANV.cpp(35.16 KB)
📄 CGCUDARuntime.cpp(1.53 KB)
📄 CGCUDARuntime.h(3.4 KB)
📄 CGCXX.cpp(11.8 KB)
📄 CGCXXABI.cpp(12.47 KB)
📄 CGCXXABI.h(27.9 KB)
📄 CGCall.cpp(197.3 KB)
📄 CGCall.h(11.62 KB)
📄 CGClass.cpp(113.54 KB)
📄 CGCleanup.cpp(46.97 KB)
📄 CGCleanup.h(19.28 KB)
📄 CGCoroutine.cpp(27.82 KB)
📄 CGDebugInfo.cpp(191.42 KB)
📄 CGDebugInfo.h(34.73 KB)
📄 CGDecl.cpp(97.98 KB)
📄 CGDeclCXX.cpp(34.73 KB)
📄 CGException.cpp(80.38 KB)
📄 CGExpr.cpp(209.78 KB)
📄 CGExprAgg.cpp(77.04 KB)
📄 CGExprCXX.cpp(90.39 KB)
📄 CGExprComplex.cpp(44.9 KB)
📄 CGExprConstant.cpp(86.17 KB)
📄 CGExprScalar.cpp(196.29 KB)
📄 CGGPUBuiltin.cpp(6.17 KB)
📄 CGLoopInfo.cpp(29.17 KB)
📄 CGLoopInfo.h(10.5 KB)
📄 CGNonTrivialStruct.cpp(41.4 KB)
📄 CGObjC.cpp(142.79 KB)
📄 CGObjCGNU.cpp(168.38 KB)
📄 CGObjCMac.cpp(304.84 KB)
📄 CGObjCRuntime.cpp(14.68 KB)
📄 CGObjCRuntime.h(14.81 KB)
📄 CGOpenCLRuntime.cpp(7.08 KB)
📄 CGOpenCLRuntime.h(3.44 KB)
📄 CGOpenMPRuntime.cpp(501.86 KB)
📄 CGOpenMPRuntime.h(111.87 KB)
📄 CGOpenMPRuntimeNVPTX.cpp(215.42 KB)
📄 CGOpenMPRuntimeNVPTX.h(22.59 KB)
📄 CGRecordLayout.h(7.84 KB)
📄 CGRecordLayoutBuilder.cpp(38.24 KB)
📄 CGStmt.cpp(92.92 KB)
📄 CGStmtOpenMP.cpp(278.04 KB)
📄 CGVTT.cpp(6.81 KB)
📄 CGVTables.cpp(55.02 KB)
📄 CGVTables.h(6.38 KB)
📄 CGValue.h(21.24 KB)
📄 CodeGenABITypes.cpp(5 KB)
📄 CodeGenAction.cpp(46.2 KB)
📄 CodeGenFunction.cpp(95.34 KB)
📄 CodeGenFunction.h(200.94 KB)
📄 CodeGenModule.cpp(228.13 KB)
📄 CodeGenModule.h(60.91 KB)
📄 CodeGenPGO.cpp(36.17 KB)
📄 CodeGenPGO.h(4.36 KB)
📄 CodeGenTBAA.cpp(16.92 KB)
📄 CodeGenTBAA.h(9.19 KB)
📄 CodeGenTypeCache.h(3.28 KB)
📄 CodeGenTypes.cpp(32.35 KB)
📄 CodeGenTypes.h(13.42 KB)
📄 ConstantEmitter.h(6.65 KB)
📄 ConstantInitBuilder.cpp(10.29 KB)
📄 CoverageMappingGen.cpp(54.64 KB)
📄 CoverageMappingGen.h(4.04 KB)
📄 EHScopeStack.h(14.38 KB)
📄 ItaniumCXXABI.cpp(176.66 KB)
📄 MacroPPCallbacks.cpp(6.41 KB)
📄 MacroPPCallbacks.h(4.54 KB)
📄 MicrosoftCXXABI.cpp(175.41 KB)
📄 ModuleBuilder.cpp(11.79 KB)
📄 ObjectFilePCHContainerOperations.cpp(12.93 KB)
📄 PatternInit.cpp(4.1 KB)
📄 PatternInit.h(722 B)
📄 SanitizerMetadata.cpp(4.21 KB)
📄 SanitizerMetadata.h(1.63 KB)
📄 SwiftCallingConv.cpp(29.76 KB)
📄 TargetInfo.cpp(403.11 KB)
📄 TargetInfo.h(15.43 KB)
📄 VarBypassDetector.cpp(5.1 KB)
📄 VarBypassDetector.h(2.29 KB)

Editing: CGCall.h

//===----- CGCall.h - Encapsulate calling convention details ----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// These classes wrap the information about a call or function
// definition used to handle ABI compliancy.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_CODEGEN_CGCALL_H
#define LLVM_CLANG_LIB_CODEGEN_CGCALL_H

#include "CGValue.h"
#include "EHScopeStack.h"
#include "clang/AST/ASTFwd.h"
#include "clang/AST/CanonicalType.h"
#include "clang/AST/GlobalDecl.h"
#include "clang/AST/Type.h"
#include "llvm/IR/Value.h"

// FIXME: Restructure so we don't have to expose so much stuff.
#include "ABIInfo.h"

namespace llvm {
class AttributeList;
class Function;
class Type;
class Value;
} // namespace llvm

namespace clang {
class ASTContext;
class Decl;
class FunctionDecl;
class ObjCMethodDecl;
class VarDecl;

namespace CodeGen {

/// Abstract information about a function or function prototype.
class CGCalleeInfo {
  /// The function prototype of the callee.
  const FunctionProtoType *CalleeProtoTy;
  /// The function declaration of the callee.
  GlobalDecl CalleeDecl;

public:
  explicit CGCalleeInfo() : CalleeProtoTy(nullptr), CalleeDecl() {}
  CGCalleeInfo(const FunctionProtoType *calleeProtoTy, GlobalDecl calleeDecl)
      : CalleeProtoTy(calleeProtoTy), CalleeDecl(calleeDecl) {}
  CGCalleeInfo(const FunctionProtoType *calleeProtoTy)
      : CalleeProtoTy(calleeProtoTy), CalleeDecl() {}
  CGCalleeInfo(GlobalDecl calleeDecl)
      : CalleeProtoTy(nullptr), CalleeDecl(calleeDecl) {}

const FunctionProtoType *getCalleeFunctionProtoType() const {
    return CalleeProtoTy;
  }
  const GlobalDecl getCalleeDecl() const { return CalleeDecl; }
};

/// All available information about a concrete callee.
class CGCallee {
  enum class SpecialKind : uintptr_t {
    Invalid,
    Builtin,
    PseudoDestructor,
    Virtual,

Last = Virtual
  };

struct BuiltinInfoStorage {
    const FunctionDecl *Decl;
    unsigned ID;
  };
  struct PseudoDestructorInfoStorage {
    const CXXPseudoDestructorExpr *Expr;
  };
  struct VirtualInfoStorage {
    const CallExpr *CE;
    GlobalDecl MD;
    Address Addr;
    llvm::FunctionType *FTy;
  };

SpecialKind KindOrFunctionPointer;
  union {
    CGCalleeInfo AbstractInfo;
    BuiltinInfoStorage BuiltinInfo;
    PseudoDestructorInfoStorage PseudoDestructorInfo;
    VirtualInfoStorage VirtualInfo;
  };

explicit CGCallee(SpecialKind kind) : KindOrFunctionPointer(kind) {}

CGCallee(const FunctionDecl *builtinDecl, unsigned builtinID)
      : KindOrFunctionPointer(SpecialKind::Builtin) {
    BuiltinInfo.Decl = builtinDecl;
    BuiltinInfo.ID = builtinID;
  }

public:
  CGCallee() : KindOrFunctionPointer(SpecialKind::Invalid) {}

/// Construct a callee.  Call this constructor directly when this
  /// isn't a direct call.
  CGCallee(const CGCalleeInfo &abstractInfo, llvm::Value *functionPtr)
      : KindOrFunctionPointer(SpecialKind(uintptr_t(functionPtr))) {
    AbstractInfo = abstractInfo;
    assert(functionPtr && "configuring callee without function pointer");
    assert(functionPtr->getType()->isPointerTy());
    assert(functionPtr->getType()->getPointerElementType()->isFunctionTy());
  }

static CGCallee forBuiltin(unsigned builtinID,
                             const FunctionDecl *builtinDecl) {
    CGCallee result(SpecialKind::Builtin);
    result.BuiltinInfo.Decl = builtinDecl;
    result.BuiltinInfo.ID = builtinID;
    return result;
  }

static CGCallee forPseudoDestructor(const CXXPseudoDestructorExpr *E) {
    CGCallee result(SpecialKind::PseudoDestructor);
    result.PseudoDestructorInfo.Expr = E;
    return result;
  }

static CGCallee forDirect(llvm::Constant *functionPtr,
                            const CGCalleeInfo &abstractInfo = CGCalleeInfo()) {
    return CGCallee(abstractInfo, functionPtr);
  }

static CGCallee forDirect(llvm::FunctionCallee functionPtr,
                            const CGCalleeInfo &abstractInfo = CGCalleeInfo()) {
    return CGCallee(abstractInfo, functionPtr.getCallee());
  }

static CGCallee forVirtual(const CallExpr *CE, GlobalDecl MD, Address Addr,
                             llvm::FunctionType *FTy) {
    CGCallee result(SpecialKind::Virtual);
    result.VirtualInfo.CE = CE;
    result.VirtualInfo.MD = MD;
    result.VirtualInfo.Addr = Addr;
    result.VirtualInfo.FTy = FTy;
    return result;
  }

bool isBuiltin() const {
    return KindOrFunctionPointer == SpecialKind::Builtin;
  }
  const FunctionDecl *getBuiltinDecl() const {
    assert(isBuiltin());
    return BuiltinInfo.Decl;
  }
  unsigned getBuiltinID() const {
    assert(isBuiltin());
    return BuiltinInfo.ID;
  }

bool isPseudoDestructor() const {
    return KindOrFunctionPointer == SpecialKind::PseudoDestructor;
  }
  const CXXPseudoDestructorExpr *getPseudoDestructorExpr() const {
    assert(isPseudoDestructor());
    return PseudoDestructorInfo.Expr;
  }

bool isOrdinary() const {
    return uintptr_t(KindOrFunctionPointer) > uintptr_t(SpecialKind::Last);
  }
  CGCalleeInfo getAbstractInfo() const {
    if (isVirtual())
      return VirtualInfo.MD;
    assert(isOrdinary());
    return AbstractInfo;
  }
  llvm::Value *getFunctionPointer() const {
    assert(isOrdinary());
    return reinterpret_cast<llvm::Value *>(uintptr_t(KindOrFunctionPointer));
  }
  void setFunctionPointer(llvm::Value *functionPtr) {
    assert(isOrdinary());
    KindOrFunctionPointer = SpecialKind(uintptr_t(functionPtr));
  }

bool isVirtual() const {
    return KindOrFunctionPointer == SpecialKind::Virtual;
  }
  const CallExpr *getVirtualCallExpr() const {
    assert(isVirtual());
    return VirtualInfo.CE;
  }
  GlobalDecl getVirtualMethodDecl() const {
    assert(isVirtual());
    return VirtualInfo.MD;
  }
  Address getThisAddress() const {
    assert(isVirtual());
    return VirtualInfo.Addr;
  }
  llvm::FunctionType *getVirtualFunctionType() const {
    assert(isVirtual());
    return VirtualInfo.FTy;
  }

/// If this is a delayed callee computation of some sort, prepare
  /// a concrete callee.
  CGCallee prepareConcreteCallee(CodeGenFunction &CGF) const;
};

struct CallArg {
private:
  union {
    RValue RV;
    LValue LV; /// The argument is semantically a load from this l-value.
  };
  bool HasLV;

/// A data-flow flag to make sure getRValue and/or copyInto are not
  /// called twice for duplicated IR emission.
  mutable bool IsUsed;

public:
  QualType Ty;
  CallArg(RValue rv, QualType ty)
      : RV(rv), HasLV(false), IsUsed(false), Ty(ty) {}
  CallArg(LValue lv, QualType ty)
      : LV(lv), HasLV(true), IsUsed(false), Ty(ty) {}
  bool hasLValue() const { return HasLV; }
  QualType getType() const { return Ty; }

/// \returns an independent RValue. If the CallArg contains an LValue,
  /// a temporary copy is returned.
  RValue getRValue(CodeGenFunction &CGF) const;

LValue getKnownLValue() const {
    assert(HasLV && !IsUsed);
    return LV;
  }
  RValue getKnownRValue() const {
    assert(!HasLV && !IsUsed);
    return RV;
  }
  void setRValue(RValue _RV) {
    assert(!HasLV);
    RV = _RV;
  }

bool isAggregate() const { return HasLV || RV.isAggregate(); }

void copyInto(CodeGenFunction &CGF, Address A) const;
};

/// CallArgList - Type for representing both the value and type of
/// arguments in a call.
class CallArgList : public SmallVector<CallArg, 8> {
public:
  CallArgList() : StackBase(nullptr) {}

struct Writeback {
    /// The original argument.  Note that the argument l-value
    /// is potentially null.
    LValue Source;

/// The temporary alloca.
    Address Temporary;

/// A value to "use" after the writeback, or null.
    llvm::Value *ToUse;
  };

struct CallArgCleanup {
    EHScopeStack::stable_iterator Cleanup;

/// The "is active" insertion point.  This instruction is temporary and
    /// will be removed after insertion.
    llvm::Instruction *IsActiveIP;
  };

void add(RValue rvalue, QualType type) { push_back(CallArg(rvalue, type)); }

void addUncopiedAggregate(LValue LV, QualType type) {
    push_back(CallArg(LV, type));
  }

/// Add all the arguments from another CallArgList to this one. After doing
  /// this, the old CallArgList retains its list of arguments, but must not
  /// be used to emit a call.
  void addFrom(const CallArgList &other) {
    insert(end(), other.begin(), other.end());
    Writebacks.insert(Writebacks.end(), other.Writebacks.begin(),
                      other.Writebacks.end());
    CleanupsToDeactivate.insert(CleanupsToDeactivate.end(),
                                other.CleanupsToDeactivate.begin(),
                                other.CleanupsToDeactivate.end());
    assert(!(StackBase && other.StackBase) && "can't merge stackbases");
    if (!StackBase)
      StackBase = other.StackBase;
  }

void addWriteback(LValue srcLV, Address temporary, llvm::Value *toUse) {
    Writeback writeback = {srcLV, temporary, toUse};
    Writebacks.push_back(writeback);
  }

bool hasWritebacks() const { return !Writebacks.empty(); }

typedef llvm::iterator_range<SmallVectorImpl<Writeback>::const_iterator>
      writeback_const_range;

writeback_const_range writebacks() const {
    return writeback_const_range(Writebacks.begin(), Writebacks.end());
  }

void addArgCleanupDeactivation(EHScopeStack::stable_iterator Cleanup,
                                 llvm::Instruction *IsActiveIP) {
    CallArgCleanup ArgCleanup;
    ArgCleanup.Cleanup = Cleanup;
    ArgCleanup.IsActiveIP = IsActiveIP;
    CleanupsToDeactivate.push_back(ArgCleanup);
  }

ArrayRef<CallArgCleanup> getCleanupsToDeactivate() const {
    return CleanupsToDeactivate;
  }

void allocateArgumentMemory(CodeGenFunction &CGF);
  llvm::Instruction *getStackBase() const { return StackBase; }
  void freeArgumentMemory(CodeGenFunction &CGF) const;

/// Returns if we're using an inalloca struct to pass arguments in
  /// memory.
  bool isUsingInAlloca() const { return StackBase; }

private:
  SmallVector<Writeback, 1> Writebacks;

/// Deactivate these cleanups immediately before making the call.  This
  /// is used to cleanup objects that are owned by the callee once the call
  /// occurs.
  SmallVector<CallArgCleanup, 1> CleanupsToDeactivate;

/// The stacksave call.  It dominates all of the argument evaluation.
  llvm::CallInst *StackBase;
};

/// FunctionArgList - Type for representing both the decl and type
/// of parameters to a function. The decl must be either a
/// ParmVarDecl or ImplicitParamDecl.
class FunctionArgList : public SmallVector<const VarDecl *, 16> {};

/// ReturnValueSlot - Contains the address where the return value of a
/// function can be stored, and whether the address is volatile or not.
class ReturnValueSlot {
  Address Addr = Address::invalid();

// Return value slot flags
  unsigned IsVolatile : 1;
  unsigned IsUnused : 1;
  unsigned IsExternallyDestructed : 1;

public:
  ReturnValueSlot()
      : IsVolatile(false), IsUnused(false), IsExternallyDestructed(false) {}
  ReturnValueSlot(Address Addr, bool IsVolatile, bool IsUnused = false,
                  bool IsExternallyDestructed = false)
      : Addr(Addr), IsVolatile(IsVolatile), IsUnused(IsUnused),
        IsExternallyDestructed(IsExternallyDestructed) {}

bool isNull() const { return !Addr.isValid(); }
  bool isVolatile() const { return IsVolatile; }
  Address getValue() const { return Addr; }
  bool isUnused() const { return IsUnused; }
  bool isExternallyDestructed() const { return IsExternallyDestructed; }
};

} // end namespace CodeGen
} // end namespace clang

#endif

003 File Manager

Editing: CGCall.h

Upload File

Create Folder