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-rw-r--r--gnu/llvm/tools/clang/lib/CodeGen/CGBlocks.h299
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diff --git a/gnu/llvm/tools/clang/lib/CodeGen/CGBlocks.h b/gnu/llvm/tools/clang/lib/CodeGen/CGBlocks.h
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--- a/gnu/llvm/tools/clang/lib/CodeGen/CGBlocks.h
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@@ -1,299 +0,0 @@
-//===-- CGBlocks.h - state for LLVM CodeGen for blocks ----------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This is the internal state used for llvm translation for block literals.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_LIB_CODEGEN_CGBLOCKS_H
-#define LLVM_CLANG_LIB_CODEGEN_CGBLOCKS_H
-
-#include "CGBuilder.h"
-#include "CGCall.h"
-#include "CGValue.h"
-#include "CodeGenFunction.h"
-#include "CodeGenTypes.h"
-#include "clang/AST/CharUnits.h"
-#include "clang/AST/Expr.h"
-#include "clang/AST/ExprCXX.h"
-#include "clang/AST/ExprObjC.h"
-#include "clang/AST/Type.h"
-#include "clang/Basic/TargetInfo.h"
-
-namespace llvm {
-class Constant;
-class Function;
-class GlobalValue;
-class DataLayout;
-class FunctionType;
-class PointerType;
-class Value;
-class LLVMContext;
-}
-
-namespace clang {
-namespace CodeGen {
-
-class CGBlockInfo;
-
-// Flags stored in __block variables.
-enum BlockByrefFlags {
- BLOCK_BYREF_HAS_COPY_DISPOSE = (1 << 25), // compiler
- BLOCK_BYREF_LAYOUT_MASK = (0xF << 28), // compiler
- BLOCK_BYREF_LAYOUT_EXTENDED = (1 << 28),
- BLOCK_BYREF_LAYOUT_NON_OBJECT = (2 << 28),
- BLOCK_BYREF_LAYOUT_STRONG = (3 << 28),
- BLOCK_BYREF_LAYOUT_WEAK = (4 << 28),
- BLOCK_BYREF_LAYOUT_UNRETAINED = (5 << 28)
-};
-
-enum BlockLiteralFlags {
- BLOCK_IS_NOESCAPE = (1 << 23),
- BLOCK_HAS_COPY_DISPOSE = (1 << 25),
- BLOCK_HAS_CXX_OBJ = (1 << 26),
- BLOCK_IS_GLOBAL = (1 << 28),
- BLOCK_USE_STRET = (1 << 29),
- BLOCK_HAS_SIGNATURE = (1 << 30),
- BLOCK_HAS_EXTENDED_LAYOUT = (1u << 31)
-};
-class BlockFlags {
- uint32_t flags;
-
-public:
- BlockFlags(uint32_t flags) : flags(flags) {}
- BlockFlags() : flags(0) {}
- BlockFlags(BlockLiteralFlags flag) : flags(flag) {}
- BlockFlags(BlockByrefFlags flag) : flags(flag) {}
-
- uint32_t getBitMask() const { return flags; }
- bool empty() const { return flags == 0; }
-
- friend BlockFlags operator|(BlockFlags l, BlockFlags r) {
- return BlockFlags(l.flags | r.flags);
- }
- friend BlockFlags &operator|=(BlockFlags &l, BlockFlags r) {
- l.flags |= r.flags;
- return l;
- }
- friend bool operator&(BlockFlags l, BlockFlags r) {
- return (l.flags & r.flags);
- }
- bool operator==(BlockFlags r) {
- return (flags == r.flags);
- }
-};
-inline BlockFlags operator|(BlockLiteralFlags l, BlockLiteralFlags r) {
- return BlockFlags(l) | BlockFlags(r);
-}
-
-enum BlockFieldFlag_t {
- BLOCK_FIELD_IS_OBJECT = 0x03, /* id, NSObject, __attribute__((NSObject)),
- block, ... */
- BLOCK_FIELD_IS_BLOCK = 0x07, /* a block variable */
-
- BLOCK_FIELD_IS_BYREF = 0x08, /* the on stack structure holding the __block
- variable */
- BLOCK_FIELD_IS_WEAK = 0x10, /* declared __weak, only used in byref copy
- helpers */
- BLOCK_FIELD_IS_ARC = 0x40, /* field has ARC-specific semantics */
- BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
- support routines */
- BLOCK_BYREF_CURRENT_MAX = 256
-};
-
-class BlockFieldFlags {
- uint32_t flags;
-
- BlockFieldFlags(uint32_t flags) : flags(flags) {}
-public:
- BlockFieldFlags() : flags(0) {}
- BlockFieldFlags(BlockFieldFlag_t flag) : flags(flag) {}
-
- uint32_t getBitMask() const { return flags; }
- bool empty() const { return flags == 0; }
-
- /// Answers whether the flags indicate that this field is an object
- /// or block pointer that requires _Block_object_assign/dispose.
- bool isSpecialPointer() const { return flags & BLOCK_FIELD_IS_OBJECT; }
-
- friend BlockFieldFlags operator|(BlockFieldFlags l, BlockFieldFlags r) {
- return BlockFieldFlags(l.flags | r.flags);
- }
- friend BlockFieldFlags &operator|=(BlockFieldFlags &l, BlockFieldFlags r) {
- l.flags |= r.flags;
- return l;
- }
- friend bool operator&(BlockFieldFlags l, BlockFieldFlags r) {
- return (l.flags & r.flags);
- }
- bool operator==(BlockFieldFlags Other) const {
- return flags == Other.flags;
- }
-};
-inline BlockFieldFlags operator|(BlockFieldFlag_t l, BlockFieldFlag_t r) {
- return BlockFieldFlags(l) | BlockFieldFlags(r);
-}
-
-/// Information about the layout of a __block variable.
-class BlockByrefInfo {
-public:
- llvm::StructType *Type;
- unsigned FieldIndex;
- CharUnits ByrefAlignment;
- CharUnits FieldOffset;
-};
-
-/// CGBlockInfo - Information to generate a block literal.
-class CGBlockInfo {
-public:
- /// Name - The name of the block, kindof.
- StringRef Name;
-
- /// The field index of 'this' within the block, if there is one.
- unsigned CXXThisIndex;
-
- class Capture {
- uintptr_t Data;
- EHScopeStack::stable_iterator Cleanup;
- CharUnits::QuantityType Offset;
-
- /// Type of the capture field. Normally, this is identical to the type of
- /// the capture's VarDecl, but can be different if there is an enclosing
- /// lambda.
- QualType FieldType;
-
- public:
- bool isIndex() const { return (Data & 1) != 0; }
- bool isConstant() const { return !isIndex(); }
-
- unsigned getIndex() const {
- assert(isIndex());
- return Data >> 1;
- }
- CharUnits getOffset() const {
- assert(isIndex());
- return CharUnits::fromQuantity(Offset);
- }
- EHScopeStack::stable_iterator getCleanup() const {
- assert(isIndex());
- return Cleanup;
- }
- void setCleanup(EHScopeStack::stable_iterator cleanup) {
- assert(isIndex());
- Cleanup = cleanup;
- }
-
- llvm::Value *getConstant() const {
- assert(isConstant());
- return reinterpret_cast<llvm::Value*>(Data);
- }
-
- QualType fieldType() const {
- return FieldType;
- }
-
- static Capture makeIndex(unsigned index, CharUnits offset,
- QualType FieldType) {
- Capture v;
- v.Data = (index << 1) | 1;
- v.Offset = offset.getQuantity();
- v.FieldType = FieldType;
- return v;
- }
-
- static Capture makeConstant(llvm::Value *value) {
- Capture v;
- v.Data = reinterpret_cast<uintptr_t>(value);
- return v;
- }
- };
-
- /// CanBeGlobal - True if the block can be global, i.e. it has
- /// no non-constant captures.
- bool CanBeGlobal : 1;
-
- /// True if the block has captures that would necessitate custom copy or
- /// dispose helper functions if the block were escaping.
- bool NeedsCopyDispose : 1;
-
- /// HasCXXObject - True if the block's custom copy/dispose functions
- /// need to be run even in GC mode.
- bool HasCXXObject : 1;
-
- /// UsesStret : True if the block uses an stret return. Mutable
- /// because it gets set later in the block-creation process.
- mutable bool UsesStret : 1;
-
- /// HasCapturedVariableLayout : True if block has captured variables
- /// and their layout meta-data has been generated.
- bool HasCapturedVariableLayout : 1;
-
- /// Indicates whether an object of a non-external C++ class is captured. This
- /// bit is used to determine the linkage of the block copy/destroy helper
- /// functions.
- bool CapturesNonExternalType : 1;
-
- /// The mapping of allocated indexes within the block.
- llvm::DenseMap<const VarDecl*, Capture> Captures;
-
- Address LocalAddress;
- llvm::StructType *StructureType;
- const BlockDecl *Block;
- const BlockExpr *BlockExpression;
- CharUnits BlockSize;
- CharUnits BlockAlign;
- CharUnits CXXThisOffset;
-
- // Offset of the gap caused by block header having a smaller
- // alignment than the alignment of the block descriptor. This
- // is the gap offset before the first capturued field.
- CharUnits BlockHeaderForcedGapOffset;
- // Gap size caused by aligning first field after block header.
- // This could be zero if no forced alignment is required.
- CharUnits BlockHeaderForcedGapSize;
-
- /// An instruction which dominates the full-expression that the
- /// block is inside.
- llvm::Instruction *DominatingIP;
-
- /// The next block in the block-info chain. Invalid if this block
- /// info is not part of the CGF's block-info chain, which is true
- /// if it corresponds to a global block or a block whose expression
- /// has been encountered.
- CGBlockInfo *NextBlockInfo;
-
- const Capture &getCapture(const VarDecl *var) const {
- return const_cast<CGBlockInfo*>(this)->getCapture(var);
- }
- Capture &getCapture(const VarDecl *var) {
- llvm::DenseMap<const VarDecl*, Capture>::iterator
- it = Captures.find(var);
- assert(it != Captures.end() && "no entry for variable!");
- return it->second;
- }
-
- const BlockDecl *getBlockDecl() const { return Block; }
- const BlockExpr *getBlockExpr() const {
- assert(BlockExpression);
- assert(BlockExpression->getBlockDecl() == Block);
- return BlockExpression;
- }
-
- CGBlockInfo(const BlockDecl *blockDecl, StringRef Name);
-
- // Indicates whether the block needs a custom copy or dispose function.
- bool needsCopyDisposeHelpers() const {
- return NeedsCopyDispose && !Block->doesNotEscape();
- }
-};
-
-} // end namespace CodeGen
-} // end namespace clang
-
-#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.