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No functional changes. The documentation is coming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224829 91177308-0d34-0410-b5e6-96231b3b80d8
126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
//===-- llvm/Instrinsics.h - LLVM Intrinsic Function Handling ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a set of enums which allow processing of intrinsic
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// functions. Values of these enum types are returned by
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// Function::getIntrinsicID.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_INTRINSICS_H
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#define LLVM_IR_INTRINSICS_H
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#include "llvm/ADT/ArrayRef.h"
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#include <string>
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namespace llvm {
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class Type;
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class FunctionType;
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class Function;
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class LLVMContext;
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class Module;
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class AttributeSet;
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/// This namespace contains an enum with a value for every intrinsic/builtin
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/// function known by LLVM. The enum values are returned by
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/// Function::getIntrinsicID().
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namespace Intrinsic {
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enum ID {
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not_intrinsic = 0, // Must be zero
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// Get the intrinsic enums generated from Intrinsics.td
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#define GET_INTRINSIC_ENUM_VALUES
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#include "llvm/IR/Intrinsics.gen"
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#undef GET_INTRINSIC_ENUM_VALUES
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, num_intrinsics
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};
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/// Return the LLVM name for an intrinsic, such as "llvm.ppc.altivec.lvx".
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std::string getName(ID id, ArrayRef<Type*> Tys = None);
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/// Return the function type for an intrinsic.
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FunctionType *getType(LLVMContext &Context, ID id,
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ArrayRef<Type*> Tys = None);
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/// Returns true if the intrinsic can be overloaded.
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bool isOverloaded(ID id);
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/// Return the attributes for an intrinsic.
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AttributeSet getAttributes(LLVMContext &C, ID id);
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/// Create or insert an LLVM Function declaration for an intrinsic, and return
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/// it.
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///
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/// The Tys parameter is for intrinsics with overloaded types (e.g., those
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/// using iAny, fAny, vAny, or iPTRAny). For a declaration of an overloaded
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/// intrinsic, Tys must provide exactly one type for each overloaded type in
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/// the intrinsic.
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Function *getDeclaration(Module *M, ID id, ArrayRef<Type*> Tys = None);
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/// Map a GCC builtin name to an intrinsic ID.
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ID getIntrinsicForGCCBuiltin(const char *Prefix, const char *BuiltinName);
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/// Map a MS builtin name to an intrinsic ID.
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ID getIntrinsicForMSBuiltin(const char *Prefix, const char *BuiltinName);
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/// This is a type descriptor which explains the type requirements of an
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/// intrinsic. This is returned by getIntrinsicInfoTableEntries.
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struct IITDescriptor {
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enum IITDescriptorKind {
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Void, VarArg, MMX, Metadata, Half, Float, Double,
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Integer, Vector, Pointer, Struct,
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Argument, ExtendArgument, TruncArgument, HalfVecArgument,
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SameVecWidthArgument, PtrToArgument
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} Kind;
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union {
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unsigned Integer_Width;
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unsigned Float_Width;
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unsigned Vector_Width;
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unsigned Pointer_AddressSpace;
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unsigned Struct_NumElements;
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unsigned Argument_Info;
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};
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enum ArgKind {
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AK_AnyInteger,
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AK_AnyFloat,
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AK_AnyVector,
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AK_AnyPointer
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};
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unsigned getArgumentNumber() const {
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assert(Kind == Argument || Kind == ExtendArgument ||
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Kind == TruncArgument || Kind == HalfVecArgument ||
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Kind == SameVecWidthArgument || Kind == PtrToArgument);
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return Argument_Info >> 2;
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}
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ArgKind getArgumentKind() const {
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assert(Kind == Argument || Kind == ExtendArgument ||
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Kind == TruncArgument || Kind == HalfVecArgument ||
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Kind == SameVecWidthArgument || Kind == PtrToArgument);
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return (ArgKind)(Argument_Info & 3);
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}
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static IITDescriptor get(IITDescriptorKind K, unsigned Field) {
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IITDescriptor Result = { K, { Field } };
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return Result;
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}
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};
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/// Return the IIT table descriptor for the specified intrinsic into an array
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/// of IITDescriptors.
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void getIntrinsicInfoTableEntries(ID id, SmallVectorImpl<IITDescriptor> &T);
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} // End Intrinsic namespace
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} // End llvm namespace
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#endif
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