52956b0f70
HLSL has a set of intangible types which are described in in the [draft HLSL Specification (**[Basic.types]**)](https://microsoft.github.io/hlsl-specs/specs/hlsl.pdf): There are special implementation-defined types such as handle types, which fall into a category of standard intangible types. Intangible types are types that have no defined object representation or value representation, as such the size is unknown at compile time. A class type T is an intangible class type if it contains an base classes or members of intangible class type, standard intangible type, or arrays of such types. Standard intangible types and intangible class types are collectively called intangible types([9](https://microsoft.github.io/hlsl-specs/specs/hlsl.html#Intangible)). This PR implements one standard intangible type `__hlsl_resource_t` and sets up the infrastructure that will make it easier to add more in the future, such as samplers or raytracing payload handles. The HLSL intangible types are declared in `clang/include/clang/Basic/HLSLIntangibleTypes.def` and this file is included with related macro definition in most places that require edits when a new type is added. The new types are added as keywords and not typedefs to make sure they cannot be redeclared, and they can only be declared in builtin implicit headers. The `__hlsl_resource_t` type represents a handle to a memory resource and it is going to be used in builtin HLSL buffer types like this: template <typename T> class RWBuffer { [[hlsl::contained_type(T)]] [[hlsl::is_rov(false)]] [[hlsl::resource_class(uav)]] __hlsl_resource_t Handle; }; Part 1/3 of llvm/llvm-project#90631. --------- Co-authored-by: Justin Bogner <mail@justinbogner.com>
506 lines
15 KiB
C++
506 lines
15 KiB
C++
//===--- ASTCommon.cpp - Common stuff for ASTReader/ASTWriter----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines common functions that both ASTReader and ASTWriter use.
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//
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//===----------------------------------------------------------------------===//
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#include "ASTCommon.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Serialization/ASTDeserializationListener.h"
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#include "llvm/Support/DJB.h"
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using namespace clang;
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// Give ASTDeserializationListener's VTable a home.
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ASTDeserializationListener::~ASTDeserializationListener() { }
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serialization::TypeIdx
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serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
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unsigned ID = 0;
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switch (BT->getKind()) {
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case BuiltinType::Void:
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ID = PREDEF_TYPE_VOID_ID;
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break;
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case BuiltinType::Bool:
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ID = PREDEF_TYPE_BOOL_ID;
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break;
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case BuiltinType::Char_U:
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ID = PREDEF_TYPE_CHAR_U_ID;
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break;
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case BuiltinType::UChar:
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ID = PREDEF_TYPE_UCHAR_ID;
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break;
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case BuiltinType::UShort:
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ID = PREDEF_TYPE_USHORT_ID;
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break;
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case BuiltinType::UInt:
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ID = PREDEF_TYPE_UINT_ID;
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break;
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case BuiltinType::ULong:
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ID = PREDEF_TYPE_ULONG_ID;
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break;
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case BuiltinType::ULongLong:
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ID = PREDEF_TYPE_ULONGLONG_ID;
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break;
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case BuiltinType::UInt128:
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ID = PREDEF_TYPE_UINT128_ID;
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break;
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case BuiltinType::Char_S:
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ID = PREDEF_TYPE_CHAR_S_ID;
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break;
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case BuiltinType::SChar:
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ID = PREDEF_TYPE_SCHAR_ID;
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break;
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case BuiltinType::WChar_S:
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case BuiltinType::WChar_U:
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ID = PREDEF_TYPE_WCHAR_ID;
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break;
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case BuiltinType::Short:
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ID = PREDEF_TYPE_SHORT_ID;
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break;
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case BuiltinType::Int:
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ID = PREDEF_TYPE_INT_ID;
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break;
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case BuiltinType::Long:
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ID = PREDEF_TYPE_LONG_ID;
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break;
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case BuiltinType::LongLong:
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ID = PREDEF_TYPE_LONGLONG_ID;
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break;
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case BuiltinType::Int128:
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ID = PREDEF_TYPE_INT128_ID;
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break;
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case BuiltinType::Half:
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ID = PREDEF_TYPE_HALF_ID;
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break;
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case BuiltinType::Float:
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ID = PREDEF_TYPE_FLOAT_ID;
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break;
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case BuiltinType::Double:
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ID = PREDEF_TYPE_DOUBLE_ID;
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break;
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case BuiltinType::LongDouble:
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ID = PREDEF_TYPE_LONGDOUBLE_ID;
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break;
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case BuiltinType::ShortAccum:
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ID = PREDEF_TYPE_SHORT_ACCUM_ID;
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break;
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case BuiltinType::Accum:
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ID = PREDEF_TYPE_ACCUM_ID;
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break;
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case BuiltinType::LongAccum:
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ID = PREDEF_TYPE_LONG_ACCUM_ID;
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break;
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case BuiltinType::UShortAccum:
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ID = PREDEF_TYPE_USHORT_ACCUM_ID;
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break;
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case BuiltinType::UAccum:
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ID = PREDEF_TYPE_UACCUM_ID;
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break;
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case BuiltinType::ULongAccum:
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ID = PREDEF_TYPE_ULONG_ACCUM_ID;
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break;
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case BuiltinType::ShortFract:
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ID = PREDEF_TYPE_SHORT_FRACT_ID;
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break;
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case BuiltinType::Fract:
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ID = PREDEF_TYPE_FRACT_ID;
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break;
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case BuiltinType::LongFract:
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ID = PREDEF_TYPE_LONG_FRACT_ID;
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break;
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case BuiltinType::UShortFract:
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ID = PREDEF_TYPE_USHORT_FRACT_ID;
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break;
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case BuiltinType::UFract:
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ID = PREDEF_TYPE_UFRACT_ID;
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break;
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case BuiltinType::ULongFract:
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ID = PREDEF_TYPE_ULONG_FRACT_ID;
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break;
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case BuiltinType::SatShortAccum:
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ID = PREDEF_TYPE_SAT_SHORT_ACCUM_ID;
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break;
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case BuiltinType::SatAccum:
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ID = PREDEF_TYPE_SAT_ACCUM_ID;
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break;
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case BuiltinType::SatLongAccum:
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ID = PREDEF_TYPE_SAT_LONG_ACCUM_ID;
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break;
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case BuiltinType::SatUShortAccum:
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ID = PREDEF_TYPE_SAT_USHORT_ACCUM_ID;
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break;
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case BuiltinType::SatUAccum:
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ID = PREDEF_TYPE_SAT_UACCUM_ID;
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break;
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case BuiltinType::SatULongAccum:
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ID = PREDEF_TYPE_SAT_ULONG_ACCUM_ID;
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break;
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case BuiltinType::SatShortFract:
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ID = PREDEF_TYPE_SAT_SHORT_FRACT_ID;
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break;
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case BuiltinType::SatFract:
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ID = PREDEF_TYPE_SAT_FRACT_ID;
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break;
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case BuiltinType::SatLongFract:
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ID = PREDEF_TYPE_SAT_LONG_FRACT_ID;
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break;
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case BuiltinType::SatUShortFract:
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ID = PREDEF_TYPE_SAT_USHORT_FRACT_ID;
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break;
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case BuiltinType::SatUFract:
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ID = PREDEF_TYPE_SAT_UFRACT_ID;
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break;
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case BuiltinType::SatULongFract:
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ID = PREDEF_TYPE_SAT_ULONG_FRACT_ID;
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break;
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case BuiltinType::Float16:
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ID = PREDEF_TYPE_FLOAT16_ID;
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break;
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case BuiltinType::Float128:
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ID = PREDEF_TYPE_FLOAT128_ID;
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break;
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case BuiltinType::Ibm128:
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ID = PREDEF_TYPE_IBM128_ID;
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break;
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case BuiltinType::NullPtr:
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ID = PREDEF_TYPE_NULLPTR_ID;
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break;
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case BuiltinType::Char8:
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ID = PREDEF_TYPE_CHAR8_ID;
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break;
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case BuiltinType::Char16:
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ID = PREDEF_TYPE_CHAR16_ID;
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break;
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case BuiltinType::Char32:
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ID = PREDEF_TYPE_CHAR32_ID;
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break;
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case BuiltinType::Overload:
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ID = PREDEF_TYPE_OVERLOAD_ID;
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break;
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case BuiltinType::UnresolvedTemplate:
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ID = PREDEF_TYPE_UNRESOLVED_TEMPLATE;
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break;
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case BuiltinType::BoundMember:
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ID = PREDEF_TYPE_BOUND_MEMBER;
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break;
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case BuiltinType::PseudoObject:
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ID = PREDEF_TYPE_PSEUDO_OBJECT;
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break;
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case BuiltinType::Dependent:
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ID = PREDEF_TYPE_DEPENDENT_ID;
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break;
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case BuiltinType::UnknownAny:
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ID = PREDEF_TYPE_UNKNOWN_ANY;
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break;
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case BuiltinType::ARCUnbridgedCast:
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ID = PREDEF_TYPE_ARC_UNBRIDGED_CAST;
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break;
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case BuiltinType::ObjCId:
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ID = PREDEF_TYPE_OBJC_ID;
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break;
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case BuiltinType::ObjCClass:
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ID = PREDEF_TYPE_OBJC_CLASS;
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break;
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case BuiltinType::ObjCSel:
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ID = PREDEF_TYPE_OBJC_SEL;
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break;
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#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/OpenCLImageTypes.def"
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#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/OpenCLExtensionTypes.def"
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case BuiltinType::OCLSampler:
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ID = PREDEF_TYPE_SAMPLER_ID;
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break;
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case BuiltinType::OCLEvent:
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ID = PREDEF_TYPE_EVENT_ID;
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break;
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case BuiltinType::OCLClkEvent:
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ID = PREDEF_TYPE_CLK_EVENT_ID;
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break;
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case BuiltinType::OCLQueue:
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ID = PREDEF_TYPE_QUEUE_ID;
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break;
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case BuiltinType::OCLReserveID:
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ID = PREDEF_TYPE_RESERVE_ID_ID;
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break;
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#define SVE_TYPE(Name, Id, SingletonId) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/AArch64SVEACLETypes.def"
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#define PPC_VECTOR_TYPE(Name, Id, Size) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/PPCTypes.def"
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#define RVV_TYPE(Name, Id, SingletonId) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/RISCVVTypes.def"
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#define WASM_TYPE(Name, Id, SingletonId) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/WebAssemblyReferenceTypes.def"
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#define AMDGPU_TYPE(Name, Id, SingletonId) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/AMDGPUTypes.def"
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#define HLSL_INTANGIBLE_TYPE(Name, Id, SingletonId) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/HLSLIntangibleTypes.def"
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case BuiltinType::BuiltinFn:
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ID = PREDEF_TYPE_BUILTIN_FN;
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break;
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case BuiltinType::IncompleteMatrixIdx:
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ID = PREDEF_TYPE_INCOMPLETE_MATRIX_IDX;
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break;
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case BuiltinType::ArraySection:
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ID = PREDEF_TYPE_ARRAY_SECTION;
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break;
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case BuiltinType::OMPArrayShaping:
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ID = PREDEF_TYPE_OMP_ARRAY_SHAPING;
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break;
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case BuiltinType::OMPIterator:
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ID = PREDEF_TYPE_OMP_ITERATOR;
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break;
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case BuiltinType::BFloat16:
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ID = PREDEF_TYPE_BFLOAT16_ID;
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break;
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}
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return TypeIdx(0, ID);
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}
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unsigned serialization::ComputeHash(Selector Sel) {
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unsigned N = Sel.getNumArgs();
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if (N == 0)
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++N;
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unsigned R = 5381;
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for (unsigned I = 0; I != N; ++I)
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if (const IdentifierInfo *II = Sel.getIdentifierInfoForSlot(I))
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R = llvm::djbHash(II->getName(), R);
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return R;
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}
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const DeclContext *
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serialization::getDefinitiveDeclContext(const DeclContext *DC) {
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switch (DC->getDeclKind()) {
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// These entities may have multiple definitions.
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case Decl::TranslationUnit:
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case Decl::ExternCContext:
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case Decl::Namespace:
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case Decl::LinkageSpec:
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case Decl::Export:
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return nullptr;
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// C/C++ tag types can only be defined in one place.
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case Decl::Enum:
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case Decl::Record:
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if (const TagDecl *Def = cast<TagDecl>(DC)->getDefinition())
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return Def;
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return nullptr;
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// FIXME: These can be defined in one place... except special member
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// functions and out-of-line definitions.
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case Decl::CXXRecord:
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case Decl::ClassTemplateSpecialization:
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case Decl::ClassTemplatePartialSpecialization:
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return nullptr;
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// Each function, method, and block declaration is its own DeclContext.
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case Decl::Function:
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case Decl::CXXMethod:
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case Decl::CXXConstructor:
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case Decl::CXXDestructor:
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case Decl::CXXConversion:
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case Decl::ObjCMethod:
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case Decl::Block:
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case Decl::Captured:
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// Objective C categories, category implementations, and class
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// implementations can only be defined in one place.
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case Decl::ObjCCategory:
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case Decl::ObjCCategoryImpl:
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case Decl::ObjCImplementation:
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return DC;
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case Decl::ObjCProtocol:
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if (const ObjCProtocolDecl *Def
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= cast<ObjCProtocolDecl>(DC)->getDefinition())
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return Def;
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return nullptr;
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// FIXME: These are defined in one place, but properties in class extensions
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// end up being back-patched into the main interface. See
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// SemaObjC::HandlePropertyInClassExtension for the offending code.
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case Decl::ObjCInterface:
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return nullptr;
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default:
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llvm_unreachable("Unhandled DeclContext in AST reader");
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}
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llvm_unreachable("Unhandled decl kind");
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}
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bool serialization::isRedeclarableDeclKind(unsigned Kind) {
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switch (static_cast<Decl::Kind>(Kind)) {
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case Decl::TranslationUnit:
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case Decl::ExternCContext:
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// Special case of a "merged" declaration.
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return true;
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case Decl::Namespace:
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case Decl::NamespaceAlias:
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case Decl::Typedef:
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case Decl::TypeAlias:
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case Decl::Enum:
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case Decl::Record:
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case Decl::CXXRecord:
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case Decl::ClassTemplateSpecialization:
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case Decl::ClassTemplatePartialSpecialization:
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case Decl::VarTemplateSpecialization:
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case Decl::VarTemplatePartialSpecialization:
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case Decl::Function:
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case Decl::CXXDeductionGuide:
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case Decl::CXXMethod:
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case Decl::CXXConstructor:
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case Decl::CXXDestructor:
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case Decl::CXXConversion:
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case Decl::UsingShadow:
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case Decl::ConstructorUsingShadow:
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case Decl::Var:
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case Decl::FunctionTemplate:
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case Decl::ClassTemplate:
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case Decl::VarTemplate:
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case Decl::TypeAliasTemplate:
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case Decl::ObjCProtocol:
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case Decl::ObjCInterface:
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case Decl::Empty:
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return true;
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// Never redeclarable.
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case Decl::UsingDirective:
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case Decl::Label:
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case Decl::UnresolvedUsingTypename:
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case Decl::TemplateTypeParm:
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case Decl::EnumConstant:
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case Decl::UnresolvedUsingValue:
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case Decl::IndirectField:
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case Decl::Field:
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case Decl::MSProperty:
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case Decl::MSGuid:
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case Decl::UnnamedGlobalConstant:
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case Decl::TemplateParamObject:
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case Decl::ObjCIvar:
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case Decl::ObjCAtDefsField:
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case Decl::NonTypeTemplateParm:
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case Decl::TemplateTemplateParm:
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case Decl::Using:
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case Decl::UsingEnum:
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case Decl::UsingPack:
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case Decl::ObjCMethod:
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case Decl::ObjCCategory:
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case Decl::ObjCCategoryImpl:
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case Decl::ObjCImplementation:
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case Decl::ObjCProperty:
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case Decl::ObjCCompatibleAlias:
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case Decl::LinkageSpec:
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case Decl::Export:
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case Decl::ObjCPropertyImpl:
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case Decl::PragmaComment:
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case Decl::PragmaDetectMismatch:
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case Decl::FileScopeAsm:
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case Decl::TopLevelStmt:
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case Decl::AccessSpec:
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case Decl::Friend:
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case Decl::FriendTemplate:
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case Decl::StaticAssert:
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case Decl::Block:
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case Decl::Captured:
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case Decl::Import:
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case Decl::OMPThreadPrivate:
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case Decl::OMPAllocate:
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case Decl::OMPRequires:
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case Decl::OMPCapturedExpr:
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case Decl::OMPDeclareReduction:
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case Decl::OMPDeclareMapper:
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case Decl::BuiltinTemplate:
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case Decl::Decomposition:
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case Decl::Binding:
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case Decl::Concept:
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case Decl::ImplicitConceptSpecialization:
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case Decl::LifetimeExtendedTemporary:
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case Decl::RequiresExprBody:
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case Decl::UnresolvedUsingIfExists:
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case Decl::HLSLBuffer:
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return false;
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// These indirectly derive from Redeclarable<T> but are not actually
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// redeclarable.
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case Decl::ImplicitParam:
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case Decl::ParmVar:
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case Decl::ObjCTypeParam:
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return false;
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}
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llvm_unreachable("Unhandled declaration kind");
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}
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bool serialization::needsAnonymousDeclarationNumber(const NamedDecl *D) {
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// Friend declarations in dependent contexts aren't anonymous in the usual
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// sense, but they cannot be found by name lookup in their semantic context
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// (or indeed in any context), so we treat them as anonymous.
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//
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// This doesn't apply to friend tag decls; Sema makes those available to name
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// lookup in the surrounding context.
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if (D->getFriendObjectKind() &&
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D->getLexicalDeclContext()->isDependentContext() && !isa<TagDecl>(D)) {
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// For function templates and class templates, the template is numbered and
|
|
// not its pattern.
|
|
if (auto *FD = dyn_cast<FunctionDecl>(D))
|
|
return !FD->getDescribedFunctionTemplate();
|
|
if (auto *RD = dyn_cast<CXXRecordDecl>(D))
|
|
return !RD->getDescribedClassTemplate();
|
|
return true;
|
|
}
|
|
|
|
// At block scope, we number everything that we need to deduplicate, since we
|
|
// can't just use name matching to keep things lined up.
|
|
// FIXME: This is only necessary for an inline function or a template or
|
|
// similar.
|
|
if (D->getLexicalDeclContext()->isFunctionOrMethod()) {
|
|
if (auto *VD = dyn_cast<VarDecl>(D))
|
|
return VD->isStaticLocal();
|
|
// FIXME: What about CapturedDecls (and declarations nested within them)?
|
|
return isa<TagDecl, BlockDecl>(D);
|
|
}
|
|
|
|
// Otherwise, we only care about anonymous class members / block-scope decls.
|
|
// FIXME: We need to handle blocks within inline / templated variables too.
|
|
if (D->getDeclName())
|
|
return false;
|
|
if (!isa<RecordDecl, ObjCInterfaceDecl>(D->getLexicalDeclContext()))
|
|
return false;
|
|
return isa<TagDecl, FieldDecl>(D);
|
|
}
|