diff options
Diffstat (limited to 'clang/lib/CodeGen/CGCall.h')
-rw-r--r-- | clang/lib/CodeGen/CGCall.h | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/clang/lib/CodeGen/CGCall.h b/clang/lib/CodeGen/CGCall.h index 04e600536e5..532cb59c62e 100644 --- a/clang/lib/CodeGen/CGCall.h +++ b/clang/lib/CodeGen/CGCall.h @@ -122,192 +122,12 @@ namespace CodeGen { SmallVector<CallArgCleanup, 1> CleanupsToDeactivate; }; - /// A class for recording the number of arguments that a function - /// signature requires. - class RequiredArgs { - /// The number of required arguments, or ~0 if the signature does - /// not permit optional arguments. - unsigned NumRequired; - public: - enum All_t { All }; - - RequiredArgs(All_t _) : NumRequired(~0U) {} - explicit RequiredArgs(unsigned n) : NumRequired(n) { - assert(n != ~0U); - } - - /// Compute the arguments required by the given formal prototype, - /// given that there may be some additional, non-formal arguments - /// in play. - static RequiredArgs forPrototypePlus(const FunctionProtoType *prototype, - unsigned additional) { - if (!prototype->isVariadic()) return All; - return RequiredArgs(prototype->getNumArgs() + additional); - } - - static RequiredArgs forPrototype(const FunctionProtoType *prototype) { - return forPrototypePlus(prototype, 0); - } - - static RequiredArgs forPrototype(CanQual<FunctionProtoType> prototype) { - return forPrototype(prototype.getTypePtr()); - } - - static RequiredArgs forPrototypePlus(CanQual<FunctionProtoType> prototype, - unsigned additional) { - return forPrototypePlus(prototype.getTypePtr(), additional); - } - - bool allowsOptionalArgs() const { return NumRequired != ~0U; } - unsigned getNumRequiredArgs() const { - assert(allowsOptionalArgs()); - return NumRequired; - } - - unsigned getOpaqueData() const { return NumRequired; } - static RequiredArgs getFromOpaqueData(unsigned value) { - if (value == ~0U) return All; - return RequiredArgs(value); - } - }; - /// 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> { }; - /// CGFunctionInfo - Class to encapsulate the information about a - /// function definition. - class CGFunctionInfo : public llvm::FoldingSetNode { - struct ArgInfo { - CanQualType type; - ABIArgInfo info; - }; - - /// The LLVM::CallingConv to use for this function (as specified by the - /// user). - unsigned CallingConvention : 8; - - /// The LLVM::CallingConv to actually use for this function, which may - /// depend on the ABI. - unsigned EffectiveCallingConvention : 8; - - /// The clang::CallingConv that this was originally created with. - unsigned ASTCallingConvention : 8; - - /// Whether this function is noreturn. - unsigned NoReturn : 1; - - /// Whether this function is returns-retained. - unsigned ReturnsRetained : 1; - - /// How many arguments to pass inreg. - unsigned HasRegParm : 1; - unsigned RegParm : 4; - - RequiredArgs Required; - - unsigned NumArgs; - ArgInfo *getArgsBuffer() { - return reinterpret_cast<ArgInfo*>(this+1); - } - const ArgInfo *getArgsBuffer() const { - return reinterpret_cast<const ArgInfo*>(this + 1); - } - - CGFunctionInfo() : Required(RequiredArgs::All) {} - - public: - static CGFunctionInfo *create(unsigned llvmCC, - const FunctionType::ExtInfo &extInfo, - CanQualType resultType, - ArrayRef<CanQualType> argTypes, - RequiredArgs required); - - typedef const ArgInfo *const_arg_iterator; - typedef ArgInfo *arg_iterator; - - const_arg_iterator arg_begin() const { return getArgsBuffer() + 1; } - const_arg_iterator arg_end() const { return getArgsBuffer() + 1 + NumArgs; } - arg_iterator arg_begin() { return getArgsBuffer() + 1; } - arg_iterator arg_end() { return getArgsBuffer() + 1 + NumArgs; } - - unsigned arg_size() const { return NumArgs; } - - bool isVariadic() const { return Required.allowsOptionalArgs(); } - RequiredArgs getRequiredArgs() const { return Required; } - - bool isNoReturn() const { return NoReturn; } - - /// In ARC, whether this function retains its return value. This - /// is not always reliable for call sites. - bool isReturnsRetained() const { return ReturnsRetained; } - - /// getASTCallingConvention() - Return the AST-specified calling - /// convention. - CallingConv getASTCallingConvention() const { - return CallingConv(ASTCallingConvention); - } - - /// getCallingConvention - Return the user specified calling - /// convention, which has been translated into an LLVM CC. - unsigned getCallingConvention() const { return CallingConvention; } - - /// getEffectiveCallingConvention - Return the actual calling convention to - /// use, which may depend on the ABI. - unsigned getEffectiveCallingConvention() const { - return EffectiveCallingConvention; - } - void setEffectiveCallingConvention(unsigned Value) { - EffectiveCallingConvention = Value; - } - - bool getHasRegParm() const { return HasRegParm; } - unsigned getRegParm() const { return RegParm; } - - FunctionType::ExtInfo getExtInfo() const { - return FunctionType::ExtInfo(isNoReturn(), - getHasRegParm(), getRegParm(), - getASTCallingConvention(), - isReturnsRetained()); - } - - CanQualType getReturnType() const { return getArgsBuffer()[0].type; } - - ABIArgInfo &getReturnInfo() { return getArgsBuffer()[0].info; } - const ABIArgInfo &getReturnInfo() const { return getArgsBuffer()[0].info; } - - void Profile(llvm::FoldingSetNodeID &ID) { - ID.AddInteger(getASTCallingConvention()); - ID.AddBoolean(NoReturn); - ID.AddBoolean(ReturnsRetained); - ID.AddBoolean(HasRegParm); - ID.AddInteger(RegParm); - ID.AddInteger(Required.getOpaqueData()); - getReturnType().Profile(ID); - for (arg_iterator it = arg_begin(), ie = arg_end(); it != ie; ++it) - it->type.Profile(ID); - } - static void Profile(llvm::FoldingSetNodeID &ID, - const FunctionType::ExtInfo &info, - RequiredArgs required, - CanQualType resultType, - ArrayRef<CanQualType> argTypes) { - ID.AddInteger(info.getCC()); - ID.AddBoolean(info.getNoReturn()); - ID.AddBoolean(info.getProducesResult()); - ID.AddBoolean(info.getHasRegParm()); - ID.AddInteger(info.getRegParm()); - ID.AddInteger(required.getOpaqueData()); - resultType.Profile(ID); - for (ArrayRef<CanQualType>::iterator - i = argTypes.begin(), e = argTypes.end(); i != e; ++i) { - i->Profile(ID); - } - } - }; - /// ReturnValueSlot - Contains the address where the return value of a /// function can be stored, and whether the address is volatile or not. class ReturnValueSlot { |