head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC4:1.1.1.3 netbsd-11-0-RC3:1.1.1.3 netbsd-11-0-RC2:1.1.1.3 netbsd-11-0-RC1:1.1.1.3 perseant-exfatfs-base-20250801:1.1.1.3 netbsd-11:1.1.1.3.0.10 netbsd-11-base:1.1.1.3 netbsd-10-1-RELEASE:1.1.1.3 perseant-exfatfs-base-20240630:1.1.1.3 perseant-exfatfs:1.1.1.3.0.8 perseant-exfatfs-base:1.1.1.3 netbsd-8-3-RELEASE:1.1.1.2 netbsd-9-4-RELEASE:1.1.1.2 netbsd-10-0-RELEASE:1.1.1.3 netbsd-10-0-RC6:1.1.1.3 netbsd-10-0-RC5:1.1.1.3 netbsd-10-0-RC4:1.1.1.3 netbsd-10-0-RC3:1.1.1.3 netbsd-10-0-RC2:1.1.1.3 netbsd-10-0-RC1:1.1.1.3 netbsd-10:1.1.1.3.0.6 netbsd-10-base:1.1.1.3 netbsd-9-3-RELEASE:1.1.1.2 cjep_sun2x:1.1.1.3.0.4 cjep_sun2x-base:1.1.1.3 cjep_staticlib_x-base1:1.1.1.3 netbsd-9-2-RELEASE:1.1.1.2 cjep_staticlib_x:1.1.1.3.0.2 cjep_staticlib_x-base:1.1.1.3 netbsd-9-1-RELEASE:1.1.1.2 phil-wifi-20200421:1.1.1.3 phil-wifi-20200411:1.1.1.3 phil-wifi-20200406:1.1.1.3 netbsd-8-2-RELEASE:1.1.1.2 netbsd-9-0-RELEASE:1.1.1.2 netbsd-9-0-RC2:1.1.1.2 netbsd-9-0-RC1:1.1.1.2 netbsd-9:1.1.1.2.0.28 netbsd-9-base:1.1.1.2 phil-wifi-20190609:1.1.1.2 netbsd-8-1-RELEASE:1.1.1.2 netbsd-8-1-RC1:1.1.1.2 pgoyette-compat-merge-20190127:1.1.1.2 pgoyette-compat-20190127:1.1.1.2 pgoyette-compat-20190118:1.1.1.2 pgoyette-compat-1226:1.1.1.2 pgoyette-compat-1126:1.1.1.2 pgoyette-compat-1020:1.1.1.2 pgoyette-compat-0930:1.1.1.2 pgoyette-compat-0906:1.1.1.2 netbsd-7-2-RELEASE:1.1.1.2 pgoyette-compat-0728:1.1.1.2 clang-337282:1.1.1.2 netbsd-8-0-RELEASE:1.1.1.2 phil-wifi:1.1.1.2.0.26 phil-wifi-base:1.1.1.2 pgoyette-compat-0625:1.1.1.2 netbsd-8-0-RC2:1.1.1.2 pgoyette-compat-0521:1.1.1.2 pgoyette-compat-0502:1.1.1.2 pgoyette-compat-0422:1.1.1.2 netbsd-8-0-RC1:1.1.1.2 pgoyette-compat-0415:1.1.1.2 pgoyette-compat-0407:1.1.1.2 pgoyette-compat-0330:1.1.1.2 pgoyette-compat-0322:1.1.1.2 pgoyette-compat-0315:1.1.1.2 netbsd-7-1-2-RELEASE:1.1.1.2 pgoyette-compat:1.1.1.2.0.24 pgoyette-compat-base:1.1.1.2 netbsd-7-1-1-RELEASE:1.1.1.2 clang-319952:1.1.1.2 matt-nb8-mediatek:1.1.1.2.0.22 matt-nb8-mediatek-base:1.1.1.2 clang-309604:1.1.1.2 perseant-stdc-iso10646:1.1.1.2.0.20 perseant-stdc-iso10646-base:1.1.1.2 netbsd-8:1.1.1.2.0.18 netbsd-8-base:1.1.1.2 prg-localcount2-base3:1.1.1.2 prg-localcount2-base2:1.1.1.2 prg-localcount2-base1:1.1.1.2 prg-localcount2:1.1.1.2.0.16 prg-localcount2-base:1.1.1.2 pgoyette-localcount-20170426:1.1.1.2 bouyer-socketcan-base1:1.1.1.2 pgoyette-localcount-20170320:1.1.1.2 netbsd-7-1:1.1.1.2.0.14 netbsd-7-1-RELEASE:1.1.1.2 netbsd-7-1-RC2:1.1.1.2 clang-294123:1.1.1.2 netbsd-7-nhusb-base-20170116:1.1.1.2 bouyer-socketcan:1.1.1.2.0.12 bouyer-socketcan-base:1.1.1.2 clang-291444:1.1.1.2 pgoyette-localcount-20170107:1.1.1.2 netbsd-7-1-RC1:1.1.1.2 pgoyette-localcount-20161104:1.1.1.2 netbsd-7-0-2-RELEASE:1.1.1.2 localcount-20160914:1.1.1.2 netbsd-7-nhusb:1.1.1.2.0.10 netbsd-7-nhusb-base:1.1.1.2 clang-280599:1.1.1.2 pgoyette-localcount-20160806:1.1.1.2 pgoyette-localcount-20160726:1.1.1.2 pgoyette-localcount:1.1.1.2.0.8 pgoyette-localcount-base:1.1.1.2 netbsd-7-0-1-RELEASE:1.1.1.2 clang-261930:1.1.1.2 netbsd-7-0:1.1.1.2.0.6 netbsd-7-0-RELEASE:1.1.1.2 netbsd-7-0-RC3:1.1.1.2 netbsd-7-0-RC2:1.1.1.2 netbsd-7-0-RC1:1.1.1.2 clang-237755:1.1.1.2 clang-232565:1.1.1.2 clang-227398:1.1.1.2 tls-maxphys-base:1.1.1.2 tls-maxphys:1.1.1.2.0.4 netbsd-7:1.1.1.2.0.2 netbsd-7-base:1.1.1.2 clang-215315:1.1.1.2 clang-209886:1.1.1.2 yamt-pagecache:1.1.1.1.0.4 yamt-pagecache-base9:1.1.1.1 tls-earlyentropy:1.1.1.1.0.2 tls-earlyentropy-base:1.1.1.2 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.1 riastradh-drm2-base3:1.1.1.1 clang-202566:1.1.1.1 clang-201163:1.1.1.1 clang-199312:1.1.1.1 clang-198450:1.1.1.1 clang-196603:1.1.1.1 clang-195771:1.1.1.1 LLVM:1.1.1; locks; strict; comment @// @; 1.1 date 2013.11.28.14.14.49; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.49; author joerg; state Exp; branches 1.1.1.1.2.1 1.1.1.1.4.1; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2014.05.30.18.14.39; author joerg; state Exp; branches 1.1.1.2.4.1 1.1.1.2.26.1; next 1.1.1.3; commitid 8q0kdlBlCn09GACx; 1.1.1.3 date 2019.11.13.22.19.19; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.1.2.1 date 2014.08.10.07.08.06; author tls; state Exp; branches; next ; commitid t01A1TLTYxkpGMLx; 1.1.1.1.4.1 date 2013.11.28.14.14.49; author yamt; state dead; branches; next 1.1.1.1.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.1.4.2 date 2014.05.22.16.18.25; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.2.4.1 date 2014.05.30.18.14.39; author tls; state dead; branches; next 1.1.1.2.4.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.2.4.2 date 2014.08.19.23.47.25; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.2.26.1 date 2020.04.13.07.46.29; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @//===--- TransBlockObjCVariable.cpp - Transformations to ARC mode ---------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // rewriteBlockObjCVariable: // // Adding __block to an obj-c variable could be either because the variable // is used for output storage or the user wanted to break a retain cycle. // This transformation checks whether a reference of the variable for the block // is actually needed (it is assigned to or its address is taken) or not. // If the reference is not needed it will assume __block was added to break a // cycle so it will remove '__block' and add __weak/__unsafe_unretained. // e.g // // __block Foo *x; // bar(^ { [x cake]; }); // ----> // __weak Foo *x; // bar(^ { [x cake]; }); // //===----------------------------------------------------------------------===// #include "Transforms.h" #include "Internals.h" #include "clang/AST/ASTContext.h" #include "clang/AST/Attr.h" #include "clang/Basic/SourceManager.h" using namespace clang; using namespace arcmt; using namespace trans; namespace { class RootBlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; class BlockVarChecker : public RecursiveASTVisitor { VarDecl *Var; typedef RecursiveASTVisitor base; public: BlockVarChecker(VarDecl *var) : Var(var) { } bool TraverseImplicitCastExpr(ImplicitCastExpr *castE) { if (DeclRefExpr * ref = dyn_cast(castE->getSubExpr())) { if (ref->getDecl() == Var) { if (castE->getCastKind() == CK_LValueToRValue) return true; // Using the value of the variable. if (castE->getCastKind() == CK_NoOp && castE->isLValue() && Var->getASTContext().getLangOpts().CPlusPlus) return true; // Binding to const C++ reference. } } return base::TraverseImplicitCastExpr(castE); } bool VisitDeclRefExpr(DeclRefExpr *E) { if (E->getDecl() == Var) return false; // The reference of the variable, and not just its value, // is needed. return true; } }; public: RootBlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool VisitBlockDecl(BlockDecl *block) { SmallVector BlockVars; for (BlockDecl::capture_iterator I = block->capture_begin(), E = block->capture_end(); I != E; ++I) { VarDecl *var = I->getVariable(); if (I->isByRef() && var->getType()->isObjCObjectPointerType() && isImplicitStrong(var->getType())) { BlockVars.push_back(var); } } for (unsigned i = 0, e = BlockVars.size(); i != e; ++i) { VarDecl *var = BlockVars[i]; BlockVarChecker checker(var); bool onlyValueOfVarIsNeeded = checker.TraverseStmt(block->getBody()); if (onlyValueOfVarIsNeeded) VarsToChange.insert(var); else VarsToChange.erase(var); } return true; } private: bool isImplicitStrong(QualType ty) { if (isa(ty.getTypePtr())) return false; return ty.getLocalQualifiers().getObjCLifetime() == Qualifiers::OCL_Strong; } }; class BlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; public: BlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool TraverseBlockDecl(BlockDecl *block) { RootBlockObjCVarRewriter(VarsToChange).TraverseDecl(block); return true; } }; } // anonymous namespace void BlockObjCVariableTraverser::traverseBody(BodyContext &BodyCtx) { MigrationPass &Pass = BodyCtx.getMigrationContext().Pass; llvm::DenseSet VarsToChange; BlockObjCVarRewriter trans(VarsToChange); trans.TraverseStmt(BodyCtx.getTopStmt()); for (llvm::DenseSet::iterator I = VarsToChange.begin(), E = VarsToChange.end(); I != E; ++I) { VarDecl *var = *I; BlocksAttr *attr = var->getAttr(); if(!attr) continue; bool useWeak = canApplyWeak(Pass.Ctx, var->getType()); SourceManager &SM = Pass.Ctx.getSourceManager(); Transaction Trans(Pass.TA); Pass.TA.replaceText(SM.getExpansionLoc(attr->getLocation()), "__block", useWeak ? "__weak" : "__unsafe_unretained"); } } @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.1.2.1 log @Rebase. @ text @d81 4 a84 3 for (const auto &I : block->captures()) { VarDecl *var = I.getVariable(); if (I.isByRef() && @ 1.1.1.2 log @Import Clang 3.5svn r209886. @ text @d81 4 a84 3 for (const auto &I : block->captures()) { VarDecl *var = I.getVariable(); if (I.isByRef() && @ 1.1.1.2.26.1 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.3 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.2.4.1 log @file TransBlockObjCVariable.cpp was added on branch tls-maxphys on 2014-08-19 23:47:25 +0000 @ text @d1 147 @ 1.1.1.2.4.2 log @Rebase to HEAD as of a few days ago. @ text @a0 147 //===--- TransBlockObjCVariable.cpp - Transformations to ARC mode ---------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // rewriteBlockObjCVariable: // // Adding __block to an obj-c variable could be either because the variable // is used for output storage or the user wanted to break a retain cycle. // This transformation checks whether a reference of the variable for the block // is actually needed (it is assigned to or its address is taken) or not. // If the reference is not needed it will assume __block was added to break a // cycle so it will remove '__block' and add __weak/__unsafe_unretained. // e.g // // __block Foo *x; // bar(^ { [x cake]; }); // ----> // __weak Foo *x; // bar(^ { [x cake]; }); // //===----------------------------------------------------------------------===// #include "Transforms.h" #include "Internals.h" #include "clang/AST/ASTContext.h" #include "clang/AST/Attr.h" #include "clang/Basic/SourceManager.h" using namespace clang; using namespace arcmt; using namespace trans; namespace { class RootBlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; class BlockVarChecker : public RecursiveASTVisitor { VarDecl *Var; typedef RecursiveASTVisitor base; public: BlockVarChecker(VarDecl *var) : Var(var) { } bool TraverseImplicitCastExpr(ImplicitCastExpr *castE) { if (DeclRefExpr * ref = dyn_cast(castE->getSubExpr())) { if (ref->getDecl() == Var) { if (castE->getCastKind() == CK_LValueToRValue) return true; // Using the value of the variable. if (castE->getCastKind() == CK_NoOp && castE->isLValue() && Var->getASTContext().getLangOpts().CPlusPlus) return true; // Binding to const C++ reference. } } return base::TraverseImplicitCastExpr(castE); } bool VisitDeclRefExpr(DeclRefExpr *E) { if (E->getDecl() == Var) return false; // The reference of the variable, and not just its value, // is needed. return true; } }; public: RootBlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool VisitBlockDecl(BlockDecl *block) { SmallVector BlockVars; for (const auto &I : block->captures()) { VarDecl *var = I.getVariable(); if (I.isByRef() && var->getType()->isObjCObjectPointerType() && isImplicitStrong(var->getType())) { BlockVars.push_back(var); } } for (unsigned i = 0, e = BlockVars.size(); i != e; ++i) { VarDecl *var = BlockVars[i]; BlockVarChecker checker(var); bool onlyValueOfVarIsNeeded = checker.TraverseStmt(block->getBody()); if (onlyValueOfVarIsNeeded) VarsToChange.insert(var); else VarsToChange.erase(var); } return true; } private: bool isImplicitStrong(QualType ty) { if (isa(ty.getTypePtr())) return false; return ty.getLocalQualifiers().getObjCLifetime() == Qualifiers::OCL_Strong; } }; class BlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; public: BlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool TraverseBlockDecl(BlockDecl *block) { RootBlockObjCVarRewriter(VarsToChange).TraverseDecl(block); return true; } }; } // anonymous namespace void BlockObjCVariableTraverser::traverseBody(BodyContext &BodyCtx) { MigrationPass &Pass = BodyCtx.getMigrationContext().Pass; llvm::DenseSet VarsToChange; BlockObjCVarRewriter trans(VarsToChange); trans.TraverseStmt(BodyCtx.getTopStmt()); for (llvm::DenseSet::iterator I = VarsToChange.begin(), E = VarsToChange.end(); I != E; ++I) { VarDecl *var = *I; BlocksAttr *attr = var->getAttr(); if(!attr) continue; bool useWeak = canApplyWeak(Pass.Ctx, var->getType()); SourceManager &SM = Pass.Ctx.getSourceManager(); Transaction Trans(Pass.TA); Pass.TA.replaceText(SM.getExpansionLoc(attr->getLocation()), "__block", useWeak ? "__weak" : "__unsafe_unretained"); } } @ 1.1.1.1.4.1 log @file TransBlockObjCVariable.cpp was added on branch yamt-pagecache on 2014-05-22 16:18:25 +0000 @ text @d1 148 @ 1.1.1.1.4.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @a0 148 //===--- TransBlockObjCVariable.cpp - Transformations to ARC mode ---------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // rewriteBlockObjCVariable: // // Adding __block to an obj-c variable could be either because the variable // is used for output storage or the user wanted to break a retain cycle. // This transformation checks whether a reference of the variable for the block // is actually needed (it is assigned to or its address is taken) or not. // If the reference is not needed it will assume __block was added to break a // cycle so it will remove '__block' and add __weak/__unsafe_unretained. // e.g // // __block Foo *x; // bar(^ { [x cake]; }); // ----> // __weak Foo *x; // bar(^ { [x cake]; }); // //===----------------------------------------------------------------------===// #include "Transforms.h" #include "Internals.h" #include "clang/AST/ASTContext.h" #include "clang/AST/Attr.h" #include "clang/Basic/SourceManager.h" using namespace clang; using namespace arcmt; using namespace trans; namespace { class RootBlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; class BlockVarChecker : public RecursiveASTVisitor { VarDecl *Var; typedef RecursiveASTVisitor base; public: BlockVarChecker(VarDecl *var) : Var(var) { } bool TraverseImplicitCastExpr(ImplicitCastExpr *castE) { if (DeclRefExpr * ref = dyn_cast(castE->getSubExpr())) { if (ref->getDecl() == Var) { if (castE->getCastKind() == CK_LValueToRValue) return true; // Using the value of the variable. if (castE->getCastKind() == CK_NoOp && castE->isLValue() && Var->getASTContext().getLangOpts().CPlusPlus) return true; // Binding to const C++ reference. } } return base::TraverseImplicitCastExpr(castE); } bool VisitDeclRefExpr(DeclRefExpr *E) { if (E->getDecl() == Var) return false; // The reference of the variable, and not just its value, // is needed. return true; } }; public: RootBlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool VisitBlockDecl(BlockDecl *block) { SmallVector BlockVars; for (BlockDecl::capture_iterator I = block->capture_begin(), E = block->capture_end(); I != E; ++I) { VarDecl *var = I->getVariable(); if (I->isByRef() && var->getType()->isObjCObjectPointerType() && isImplicitStrong(var->getType())) { BlockVars.push_back(var); } } for (unsigned i = 0, e = BlockVars.size(); i != e; ++i) { VarDecl *var = BlockVars[i]; BlockVarChecker checker(var); bool onlyValueOfVarIsNeeded = checker.TraverseStmt(block->getBody()); if (onlyValueOfVarIsNeeded) VarsToChange.insert(var); else VarsToChange.erase(var); } return true; } private: bool isImplicitStrong(QualType ty) { if (isa(ty.getTypePtr())) return false; return ty.getLocalQualifiers().getObjCLifetime() == Qualifiers::OCL_Strong; } }; class BlockObjCVarRewriter : public RecursiveASTVisitor { llvm::DenseSet &VarsToChange; public: BlockObjCVarRewriter(llvm::DenseSet &VarsToChange) : VarsToChange(VarsToChange) { } bool TraverseBlockDecl(BlockDecl *block) { RootBlockObjCVarRewriter(VarsToChange).TraverseDecl(block); return true; } }; } // anonymous namespace void BlockObjCVariableTraverser::traverseBody(BodyContext &BodyCtx) { MigrationPass &Pass = BodyCtx.getMigrationContext().Pass; llvm::DenseSet VarsToChange; BlockObjCVarRewriter trans(VarsToChange); trans.TraverseStmt(BodyCtx.getTopStmt()); for (llvm::DenseSet::iterator I = VarsToChange.begin(), E = VarsToChange.end(); I != E; ++I) { VarDecl *var = *I; BlocksAttr *attr = var->getAttr(); if(!attr) continue; bool useWeak = canApplyWeak(Pass.Ctx, var->getType()); SourceManager &SM = Pass.Ctx.getSourceManager(); Transaction Trans(Pass.TA); Pass.TA.replaceText(SM.getExpansionLoc(attr->getLocation()), "__block", useWeak ? "__weak" : "__unsafe_unretained"); } } @