Bug Summary

File:build/source/llvm/lib/Transforms/IPO/SCCP.cpp
Warning:line 397, column 3
Potential leak of memory pointed to by field '_M_head_impl'

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name SCCP.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/source/build-llvm -resource-dir /usr/lib/llvm-17/lib/clang/17 -D _DEBUG -D _GLIBCXX_ASSERTIONS -D _GNU_SOURCE -D _LIBCPP_ENABLE_ASSERTIONS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I lib/Transforms/IPO -I /build/source/llvm/lib/Transforms/IPO -I include -I /build/source/llvm/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-17/lib/clang/17/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/source/build-llvm=build-llvm -fmacro-prefix-map=/build/source/= -fcoverage-prefix-map=/build/source/build-llvm=build-llvm -fcoverage-prefix-map=/build/source/= -source-date-epoch 1679443490 -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -Wno-misleading-indentation -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/build/source/build-llvm -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2023-03-22-005342-16304-1 -x c++ /build/source/llvm/lib/Transforms/IPO/SCCP.cpp

/build/source/llvm/lib/Transforms/IPO/SCCP.cpp

→
1//===-- SCCP.cpp ----------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements Interprocedural Sparse Conditional Constant Propagation.
10//
11//===----------------------------------------------------------------------===//
12
13#include "llvm/Transforms/IPO/SCCP.h"
14#include "llvm/ADT/SetVector.h"
15#include "llvm/Analysis/AssumptionCache.h"
16#include "llvm/Analysis/LoopInfo.h"
17#include "llvm/Analysis/PostDominators.h"
18#include "llvm/Analysis/TargetLibraryInfo.h"
19#include "llvm/Analysis/TargetTransformInfo.h"
20#include "llvm/Analysis/ValueLattice.h"
21#include "llvm/Analysis/ValueLatticeUtils.h"
22#include "llvm/Analysis/ValueTracking.h"
23#include "llvm/InitializePasses.h"
24#include "llvm/IR/Constants.h"
25#include "llvm/IR/IntrinsicInst.h"
26#include "llvm/Support/CommandLine.h"
27#include "llvm/Support/ModRef.h"
28#include "llvm/Transforms/IPO.h"
29#include "llvm/Transforms/IPO/FunctionSpecialization.h"
30#include "llvm/Transforms/Scalar/SCCP.h"
31#include "llvm/Transforms/Utils/Local.h"
32#include "llvm/Transforms/Utils/SCCPSolver.h"
33
34using namespace llvm;
35
36#define DEBUG_TYPE"sccp" "sccp"
37
38STATISTIC(NumInstRemoved, "Number of instructions removed")static llvm::Statistic NumInstRemoved = {"sccp", "NumInstRemoved"
, "Number of instructions removed"};
39STATISTIC(NumArgsElimed ,"Number of arguments constant propagated")static llvm::Statistic NumArgsElimed = {"sccp", "NumArgsElimed"
, "Number of arguments constant propagated"};
40STATISTIC(NumGlobalConst, "Number of globals found to be constant")static llvm::Statistic NumGlobalConst = {"sccp", "NumGlobalConst"
, "Number of globals found to be constant"};
41STATISTIC(NumDeadBlocks , "Number of basic blocks unreachable")static llvm::Statistic NumDeadBlocks = {"sccp", "NumDeadBlocks"
, "Number of basic blocks unreachable"};
42STATISTIC(NumInstReplaced,static llvm::Statistic NumInstReplaced = {"sccp", "NumInstReplaced"
, "Number of instructions replaced with (simpler) instruction"
}
43 "Number of instructions replaced with (simpler) instruction")static llvm::Statistic NumInstReplaced = {"sccp", "NumInstReplaced"
, "Number of instructions replaced with (simpler) instruction"
};
44
45static cl::opt<unsigned> FuncSpecMaxIters(
46 "funcspec-max-iters", cl::init(1), cl::Hidden, cl::desc(
47 "The maximum number of iterations function specialization is run"));
48
49static void findReturnsToZap(Function &F,
50 SmallVector<ReturnInst *, 8> &ReturnsToZap,
51 SCCPSolver &Solver) {
52 // We can only do this if we know that nothing else can call the function.
53 if (!Solver.isArgumentTrackedFunction(&F))
54 return;
55
56 if (Solver.mustPreserveReturn(&F)) {
57 LLVM_DEBUG(do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap returns of the function : "
<< F.getName() << " due to present musttail or \"clang.arc.attachedcall\" call of "
"it\n"; } } while (false)
58 dbgs()do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap returns of the function : "
<< F.getName() << " due to present musttail or \"clang.arc.attachedcall\" call of "
"it\n"; } } while (false)
59 << "Can't zap returns of the function : " << F.getName()do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap returns of the function : "
<< F.getName() << " due to present musttail or \"clang.arc.attachedcall\" call of "
"it\n"; } } while (false)
60 << " due to present musttail or \"clang.arc.attachedcall\" call of "do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap returns of the function : "
<< F.getName() << " due to present musttail or \"clang.arc.attachedcall\" call of "
"it\n"; } } while (false)
61 "it\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap returns of the function : "
<< F.getName() << " due to present musttail or \"clang.arc.attachedcall\" call of "
"it\n"; } } while (false);
62 return;
63 }
64
65 assert((static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
66 all_of(F.users(),(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
67 [&Solver](User *U) {(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
68 if (isa<Instruction>(U) &&(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
69 !Solver.isBlockExecutable(cast<Instruction>(U)->getParent()))(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
70 return true;(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
71 // Non-callsite uses are not impacted by zapping. Also, constant(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
72 // uses (like blockaddresses) could stuck around, without being(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
73 // used in the underlying IR, meaning we do not have lattice(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
74 // values for them.(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
75 if (!isa<CallBase>(U))(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
76 return true;(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
77 if (U->getType()->isStructTy()) {(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
78 return all_of(Solver.getStructLatticeValueFor(U),(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
79 [](const ValueLatticeElement &LV) {(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
80 return !SCCPSolver::isOverdefined(LV);(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
81 });(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
82 }(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
83
84 // We don't consider assume-like intrinsics to be actual address(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
85 // captures.(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
86 if (auto *II = dyn_cast<IntrinsicInst>(U)) {(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
87 if (II->isAssumeLikeIntrinsic())(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
88 return true;(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
89 }(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
90
91 return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U));(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
92 }) &&(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
))
93 "We can only zap functions where all live users have a concrete value")(static_cast <bool> (all_of(F.users(), [&Solver](User
*U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable
(cast<Instruction>(U)->getParent())) return true; if
(!isa<CallBase>(U)) return true; if (U->getType()->
isStructTy()) { return all_of(Solver.getStructLatticeValueFor
(U), [](const ValueLatticeElement &LV) { return !SCCPSolver
::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst
>(U)) { if (II->isAssumeLikeIntrinsic()) return true; }
return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(
U)); }) && "We can only zap functions where all live users have a concrete value"
) ? void (0) : __assert_fail ("all_of(F.users(), [&Solver](User *U) { if (isa<Instruction>(U) && !Solver.isBlockExecutable(cast<Instruction>(U)->getParent())) return true; if (!isa<CallBase>(U)) return true; if (U->getType()->isStructTy()) { return all_of(Solver.getStructLatticeValueFor(U), [](const ValueLatticeElement &LV) { return !SCCPSolver::isOverdefined(LV); }); } if (auto *II = dyn_cast<IntrinsicInst>(U)) { if (II->isAssumeLikeIntrinsic()) return true; } return !SCCPSolver::isOverdefined(Solver.getLatticeValueFor(U)); }) && \"We can only zap functions where all live users have a concrete value\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 93, __extension__ __PRETTY_FUNCTION__
));
94
95 for (BasicBlock &BB : F) {
96 if (CallInst *CI = BB.getTerminatingMustTailCall()) {
97 LLVM_DEBUG(dbgs() << "Can't zap return of the block due to present "do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap return of the block due to present "
<< "musttail call : " << *CI << "\n"; } } while
(false)
98 << "musttail call : " << *CI << "\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Can't zap return of the block due to present "
<< "musttail call : " << *CI << "\n"; } } while
(false);
99 (void)CI;
100 return;
101 }
102
103 if (auto *RI = dyn_cast<ReturnInst>(BB.getTerminator()))
104 if (!isa<UndefValue>(RI->getOperand(0)))
105 ReturnsToZap.push_back(RI);
106 }
107}
108
109static bool runIPSCCP(
110 Module &M, const DataLayout &DL, FunctionAnalysisManager *FAM,
111 std::function<const TargetLibraryInfo &(Function &)> GetTLI,
112 std::function<TargetTransformInfo &(Function &)> GetTTI,
113 std::function<AssumptionCache &(Function &)> GetAC,
114 function_ref<AnalysisResultsForFn(Function &)> getAnalysis,
115 bool IsFuncSpecEnabled) {
116 SCCPSolver Solver(DL, GetTLI, M.getContext());
117 FunctionSpecializer Specializer(Solver, M, FAM, GetTLI, GetTTI, GetAC);
118
119 // Loop over all functions, marking arguments to those with their addresses
120 // taken or that are external as overdefined.
121 for (Function &F : M) {
122 if (F.isDeclaration())
123 continue;
124
125 Solver.addAnalysis(F, getAnalysis(F));
126
127 // Determine if we can track the function's return values. If so, add the
128 // function to the solver's set of return-tracked functions.
129 if (canTrackReturnsInterprocedurally(&F))
130 Solver.addTrackedFunction(&F);
131
132 // Determine if we can track the function's arguments. If so, add the
133 // function to the solver's set of argument-tracked functions.
134 if (canTrackArgumentsInterprocedurally(&F)) {
135 Solver.addArgumentTrackedFunction(&F);
136 continue;
137 }
138
139 // Assume the function is called.
140 Solver.markBlockExecutable(&F.front());
141
142 // Assume nothing about the incoming arguments.
143 for (Argument &AI : F.args())
144 Solver.markOverdefined(&AI);
145 }
146
147 // Determine if we can track any of the module's global variables. If so, add
148 // the global variables we can track to the solver's set of tracked global
149 // variables.
150 for (GlobalVariable &G : M.globals()) {
151 G.removeDeadConstantUsers();
152 if (canTrackGlobalVariableInterprocedurally(&G))
153 Solver.trackValueOfGlobalVariable(&G);
154 }
155
156 // Solve for constants.
157 Solver.solveWhileResolvedUndefsIn(M);
158
159 if (IsFuncSpecEnabled) {
160 unsigned Iters = 0;
161 while (Iters++ < FuncSpecMaxIters && Specializer.run());
162 }
163
164 // Iterate over all of the instructions in the module, replacing them with
165 // constants if we have found them to be of constant values.
166 bool MadeChanges = false;
167 for (Function &F : M) {
168 if (F.isDeclaration())
169 continue;
170
171 SmallVector<BasicBlock *, 512> BlocksToErase;
172
173 if (Solver.isBlockExecutable(&F.front())) {
174 bool ReplacedPointerArg = false;
175 for (Argument &Arg : F.args()) {
176 if (!Arg.use_empty() && Solver.tryToReplaceWithConstant(&Arg)) {
177 ReplacedPointerArg |= Arg.getType()->isPointerTy();
178 ++NumArgsElimed;
179 }
180 }
181
182 // If we replaced an argument, we may now also access a global (currently
183 // classified as "other" memory). Update memory attribute to reflect this.
184 if (ReplacedPointerArg) {
185 auto UpdateAttrs = [&](AttributeList AL) {
186 MemoryEffects ME = AL.getMemoryEffects();
187 if (ME == MemoryEffects::unknown())
188 return AL;
189
190 ME |= MemoryEffects(MemoryEffects::Other,
191 ME.getModRef(MemoryEffects::ArgMem));
192 return AL.addFnAttribute(
193 F.getContext(),
194 Attribute::getWithMemoryEffects(F.getContext(), ME));
195 };
196
197 F.setAttributes(UpdateAttrs(F.getAttributes()));
198 for (User *U : F.users()) {
199 auto *CB = dyn_cast<CallBase>(U);
200 if (!CB || CB->getCalledFunction() != &F)
201 continue;
202
203 CB->setAttributes(UpdateAttrs(CB->getAttributes()));
204 }
205 }
206 MadeChanges |= ReplacedPointerArg;
207 }
208
209 SmallPtrSet<Value *, 32> InsertedValues;
210 for (BasicBlock &BB : F) {
211 if (!Solver.isBlockExecutable(&BB)) {
212 LLVM_DEBUG(dbgs() << " BasicBlock Dead:" << BB)do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << " BasicBlock Dead:" << BB;
} } while (false);
213 ++NumDeadBlocks;
214
215 MadeChanges = true;
216
217 if (&BB != &F.front())
218 BlocksToErase.push_back(&BB);
219 continue;
220 }
221
222 MadeChanges |= Solver.simplifyInstsInBlock(
223 BB, InsertedValues, NumInstRemoved, NumInstReplaced);
224 }
225
226 DomTreeUpdater DTU = IsFuncSpecEnabled && Specializer.isClonedFunction(&F)
227 ? DomTreeUpdater(DomTreeUpdater::UpdateStrategy::Lazy)
228 : Solver.getDTU(F);
229
230 // Change dead blocks to unreachable. We do it after replacing constants
231 // in all executable blocks, because changeToUnreachable may remove PHI
232 // nodes in executable blocks we found values for. The function's entry
233 // block is not part of BlocksToErase, so we have to handle it separately.
234 for (BasicBlock *BB : BlocksToErase) {
235 NumInstRemoved += changeToUnreachable(BB->getFirstNonPHI(),
236 /*PreserveLCSSA=*/false, &DTU);
237 }
238 if (!Solver.isBlockExecutable(&F.front()))
239 NumInstRemoved += changeToUnreachable(F.front().getFirstNonPHI(),
240 /*PreserveLCSSA=*/false, &DTU);
241
242 BasicBlock *NewUnreachableBB = nullptr;
243 for (BasicBlock &BB : F)
244 MadeChanges |= Solver.removeNonFeasibleEdges(&BB, DTU, NewUnreachableBB);
245
246 for (BasicBlock *DeadBB : BlocksToErase)
247 if (!DeadBB->hasAddressTaken())
248 DTU.deleteBB(DeadBB);
249
250 for (BasicBlock &BB : F) {
251 for (Instruction &Inst : llvm::make_early_inc_range(BB)) {
252 if (Solver.getPredicateInfoFor(&Inst)) {
253 if (auto *II = dyn_cast<IntrinsicInst>(&Inst)) {
254 if (II->getIntrinsicID() == Intrinsic::ssa_copy) {
255 Value *Op = II->getOperand(0);
256 Inst.replaceAllUsesWith(Op);
257 Inst.eraseFromParent();
258 }
259 }
260 }
261 }
262 }
263 }
264
265 // If we inferred constant or undef return values for a function, we replaced
266 // all call uses with the inferred value. This means we don't need to bother
267 // actually returning anything from the function. Replace all return
268 // instructions with return undef.
269 //
270 // Do this in two stages: first identify the functions we should process, then
271 // actually zap their returns. This is important because we can only do this
272 // if the address of the function isn't taken. In cases where a return is the
273 // last use of a function, the order of processing functions would affect
274 // whether other functions are optimizable.
275 SmallVector<ReturnInst*, 8> ReturnsToZap;
276
277 for (const auto &I : Solver.getTrackedRetVals()) {
278 Function *F = I.first;
279 const ValueLatticeElement &ReturnValue = I.second;
280
281 // If there is a known constant range for the return value, add !range
282 // metadata to the function's call sites.
283 if (ReturnValue.isConstantRange() &&
284 !ReturnValue.getConstantRange().isSingleElement()) {
285 // Do not add range metadata if the return value may include undef.
286 if (ReturnValue.isConstantRangeIncludingUndef())
287 continue;
288
289 auto &CR = ReturnValue.getConstantRange();
290 for (User *User : F->users()) {
291 auto *CB = dyn_cast<CallBase>(User);
292 if (!CB || CB->getCalledFunction() != F)
293 continue;
294
295 // Do not touch existing metadata for now.
296 // TODO: We should be able to take the intersection of the existing
297 // metadata and the inferred range.
298 if (CB->getMetadata(LLVMContext::MD_range))
299 continue;
300
301 LLVMContext &Context = CB->getParent()->getContext();
302 Metadata *RangeMD[] = {
303 ConstantAsMetadata::get(ConstantInt::get(Context, CR.getLower())),
304 ConstantAsMetadata::get(ConstantInt::get(Context, CR.getUpper()))};
305 CB->setMetadata(LLVMContext::MD_range, MDNode::get(Context, RangeMD));
306 }
307 continue;
308 }
309 if (F->getReturnType()->isVoidTy())
310 continue;
311 if (SCCPSolver::isConstant(ReturnValue) || ReturnValue.isUnknownOrUndef())
312 findReturnsToZap(*F, ReturnsToZap, Solver);
313 }
314
315 for (auto *F : Solver.getMRVFunctionsTracked()) {
316 assert(F->getReturnType()->isStructTy() &&(static_cast <bool> (F->getReturnType()->isStructTy
() && "The return type should be a struct") ? void (0
) : __assert_fail ("F->getReturnType()->isStructTy() && \"The return type should be a struct\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 317, __extension__ __PRETTY_FUNCTION__
))
317 "The return type should be a struct")(static_cast <bool> (F->getReturnType()->isStructTy
() && "The return type should be a struct") ? void (0
) : __assert_fail ("F->getReturnType()->isStructTy() && \"The return type should be a struct\""
, "llvm/lib/Transforms/IPO/SCCP.cpp", 317, __extension__ __PRETTY_FUNCTION__
));
318 StructType *STy = cast<StructType>(F->getReturnType());
319 if (Solver.isStructLatticeConstant(F, STy))
320 findReturnsToZap(*F, ReturnsToZap, Solver);
321 }
322
323 // Zap all returns which we've identified as zap to change.
324 SmallSetVector<Function *, 8> FuncZappedReturn;
325 for (ReturnInst *RI : ReturnsToZap) {
326 Function *F = RI->getParent()->getParent();
327 RI->setOperand(0, UndefValue::get(F->getReturnType()));
328 // Record all functions that are zapped.
329 FuncZappedReturn.insert(F);
330 }
331
332 // Remove the returned attribute for zapped functions and the
333 // corresponding call sites.
334 // Also remove any attributes that convert an undef return value into
335 // immediate undefined behavior
336 AttributeMask UBImplyingAttributes =
337 AttributeFuncs::getUBImplyingAttributes();
338 for (Function *F : FuncZappedReturn) {
339 for (Argument &A : F->args())
340 F->removeParamAttr(A.getArgNo(), Attribute::Returned);
341 F->removeRetAttrs(UBImplyingAttributes);
342 for (Use &U : F->uses()) {
343 CallBase *CB = dyn_cast<CallBase>(U.getUser());
344 if (!CB) {
345 assert(isa<BlockAddress>(U.getUser()) ||(static_cast <bool> (isa<BlockAddress>(U.getUser(
)) || (isa<Constant>(U.getUser()) && all_of(U.getUser
()->users(), [](const User *UserUser) { return cast<IntrinsicInst
>(UserUser)->isAssumeLikeIntrinsic(); }))) ? void (0) :
__assert_fail ("isa<BlockAddress>(U.getUser()) || (isa<Constant>(U.getUser()) && all_of(U.getUser()->users(), [](const User *UserUser) { return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic(); }))"
, "llvm/lib/Transforms/IPO/SCCP.cpp", 349, __extension__ __PRETTY_FUNCTION__
))
346 (isa<Constant>(U.getUser()) &&(static_cast <bool> (isa<BlockAddress>(U.getUser(
)) || (isa<Constant>(U.getUser()) && all_of(U.getUser
()->users(), [](const User *UserUser) { return cast<IntrinsicInst
>(UserUser)->isAssumeLikeIntrinsic(); }))) ? void (0) :
__assert_fail ("isa<BlockAddress>(U.getUser()) || (isa<Constant>(U.getUser()) && all_of(U.getUser()->users(), [](const User *UserUser) { return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic(); }))"
, "llvm/lib/Transforms/IPO/SCCP.cpp", 349, __extension__ __PRETTY_FUNCTION__
))
347 all_of(U.getUser()->users(), [](const User *UserUser) {(static_cast <bool> (isa<BlockAddress>(U.getUser(
)) || (isa<Constant>(U.getUser()) && all_of(U.getUser
()->users(), [](const User *UserUser) { return cast<IntrinsicInst
>(UserUser)->isAssumeLikeIntrinsic(); }))) ? void (0) :
__assert_fail ("isa<BlockAddress>(U.getUser()) || (isa<Constant>(U.getUser()) && all_of(U.getUser()->users(), [](const User *UserUser) { return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic(); }))"
, "llvm/lib/Transforms/IPO/SCCP.cpp", 349, __extension__ __PRETTY_FUNCTION__
))
348 return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic();(static_cast <bool> (isa<BlockAddress>(U.getUser(
)) || (isa<Constant>(U.getUser()) && all_of(U.getUser
()->users(), [](const User *UserUser) { return cast<IntrinsicInst
>(UserUser)->isAssumeLikeIntrinsic(); }))) ? void (0) :
__assert_fail ("isa<BlockAddress>(U.getUser()) || (isa<Constant>(U.getUser()) && all_of(U.getUser()->users(), [](const User *UserUser) { return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic(); }))"
, "llvm/lib/Transforms/IPO/SCCP.cpp", 349, __extension__ __PRETTY_FUNCTION__
))
349 })))(static_cast <bool> (isa<BlockAddress>(U.getUser(
)) || (isa<Constant>(U.getUser()) && all_of(U.getUser
()->users(), [](const User *UserUser) { return cast<IntrinsicInst
>(UserUser)->isAssumeLikeIntrinsic(); }))) ? void (0) :
__assert_fail ("isa<BlockAddress>(U.getUser()) || (isa<Constant>(U.getUser()) && all_of(U.getUser()->users(), [](const User *UserUser) { return cast<IntrinsicInst>(UserUser)->isAssumeLikeIntrinsic(); }))"
, "llvm/lib/Transforms/IPO/SCCP.cpp", 349, __extension__ __PRETTY_FUNCTION__
));
350 continue;
351 }
352
353 for (Use &Arg : CB->args())
354 CB->removeParamAttr(CB->getArgOperandNo(&Arg), Attribute::Returned);
355 CB->removeRetAttrs(UBImplyingAttributes);
356 }
357 }
358
359 // If we inferred constant or undef values for globals variables, we can
360 // delete the global and any stores that remain to it.
361 for (const auto &I : make_early_inc_range(Solver.getTrackedGlobals())) {
362 GlobalVariable *GV = I.first;
363 if (SCCPSolver::isOverdefined(I.second))
364 continue;
365 LLVM_DEBUG(dbgs() << "Found that GV '" << GV->getName()do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Found that GV '" << GV->
getName() << "' is constant!\n"; } } while (false)
366 << "' is constant!\n")do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("sccp")) { dbgs() << "Found that GV '" << GV->
getName() << "' is constant!\n"; } } while (false);
367 while (!GV->use_empty()) {
368 StoreInst *SI = cast<StoreInst>(GV->user_back());
369 SI->eraseFromParent();
370 MadeChanges = true;
371 }
372 M.eraseGlobalVariable(GV);
373 ++NumGlobalConst;
374 }
375
376 return MadeChanges;
377}
378
379PreservedAnalyses IPSCCPPass::run(Module &M, ModuleAnalysisManager &AM) {
380 const DataLayout &DL = M.getDataLayout();
381 auto &FAM = AM.getResult<FunctionAnalysisManagerModuleProxy>(M).getManager();
382 auto GetTLI = [&FAM](Function &F) -> const TargetLibraryInfo & {
383 return FAM.getResult<TargetLibraryAnalysis>(F);
384 };
385 auto GetTTI = [&FAM](Function &F) -> TargetTransformInfo & {
386 return FAM.getResult<TargetIRAnalysis>(F);
387 };
388 auto GetAC = [&FAM](Function &F) -> AssumptionCache & {
389 return FAM.getResult<AssumptionAnalysis>(F);
390 };
391 auto getAnalysis = [&FAM, this](Function &F) -> AnalysisResultsForFn {
392 DominatorTree &DT = FAM.getResult<DominatorTreeAnalysis>(F);
393 return {
394 std::make_unique<PredicateInfo>(F, DT, FAM.getResult<AssumptionAnalysis>(F)),
1
Calling 'make_unique<llvm::PredicateInfo, llvm::Function &, llvm::DominatorTree &, llvm::AssumptionCache &>'
→
3
←
Returned allocated memory
→
395 &DT, FAM.getCachedResult<PostDominatorTreeAnalysis>(F),
396 isFuncSpecEnabled() ? &FAM.getResult<LoopAnalysis>(F) : nullptr };
4
←
Assuming the condition is false
→
5
←
'?' condition is false
→
397 };
6
←
Potential leak of memory pointed to by field '_M_head_impl'
398
399 if (!runIPSCCP(M, DL, &FAM, GetTLI, GetTTI, GetAC, getAnalysis,
400 isFuncSpecEnabled()))
401 return PreservedAnalyses::all();
402
403 PreservedAnalyses PA;
404 PA.preserve<DominatorTreeAnalysis>();
405 PA.preserve<PostDominatorTreeAnalysis>();
406 PA.preserve<FunctionAnalysisManagerModuleProxy>();
407 return PA;
408}
←

/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h

1// unique_ptr implementation -*- C++ -*-
2
3// Copyright (C) 2008-2020 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/unique_ptr.h
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{memory}
28 */
29
30#ifndef _UNIQUE_PTR_H1
31#define _UNIQUE_PTR_H1 1
32
33#include <bits/c++config.h>
34#include <debug/assertions.h>
35#include <type_traits>
36#include <utility>
37#include <tuple>
38#include <bits/stl_function.h>
39#include <bits/functional_hash.h>
40#if __cplusplus201703L > 201703L
41# include <compare>
42# include <ostream>
43#endif
44
45namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default")))
46{
47_GLIBCXX_BEGIN_NAMESPACE_VERSION
48
49 /**
50 * @addtogroup pointer_abstractions
51 * @{
52 */
53
54#if _GLIBCXX_USE_DEPRECATED1
55#pragma GCC diagnostic push
56#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
57 template<typename> class auto_ptr;
58#pragma GCC diagnostic pop
59#endif
60
61 /// Primary template of default_delete, used by unique_ptr for single objects
62 template<typename _Tp>
63 struct default_delete
64 {
65 /// Default constructor
66 constexpr default_delete() noexcept = default;
67
68 /** @brief Converting constructor.
69 *
70 * Allows conversion from a deleter for objects of another type, `_Up`,
71 * only if `_Up*` is convertible to `_Tp*`.
72 */
73 template<typename _Up,
74 typename = _Require<is_convertible<_Up*, _Tp*>>>
75 default_delete(const default_delete<_Up>&) noexcept { }
76
77 /// Calls `delete __ptr`
78 void
79 operator()(_Tp* __ptr) const
80 {
81 static_assert(!is_void<_Tp>::value,
82 "can't delete pointer to incomplete type");
83 static_assert(sizeof(_Tp)>0,
84 "can't delete pointer to incomplete type");
85 delete __ptr;
86 }
87 };
88
89 // _GLIBCXX_RESOLVE_LIB_DEFECTS
90 // DR 740 - omit specialization for array objects with a compile time length
91
92 /// Specialization of default_delete for arrays, used by `unique_ptr<T[]>`
93 template<typename _Tp>
94 struct default_delete<_Tp[]>
95 {
96 public:
97 /// Default constructor
98 constexpr default_delete() noexcept = default;
99
100 /** @brief Converting constructor.
101 *
102 * Allows conversion from a deleter for arrays of another type, such as
103 * a const-qualified version of `_Tp`.
104 *
105 * Conversions from types derived from `_Tp` are not allowed because
106 * it is undefined to `delete[]` an array of derived types through a
107 * pointer to the base type.
108 */
109 template<typename _Up,
110 typename = _Require<is_convertible<_Up(*)[], _Tp(*)[]>>>
111 default_delete(const default_delete<_Up[]>&) noexcept { }
112
113 /// Calls `delete[] __ptr`
114 template<typename _Up>
115 typename enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value>::type
116 operator()(_Up* __ptr) const
117 {
118 static_assert(sizeof(_Tp)>0,
119 "can't delete pointer to incomplete type");
120 delete [] __ptr;
121 }
122 };
123
124 /// @cond undocumented
125
126 // Manages the pointer and deleter of a unique_ptr
127 template <typename _Tp, typename _Dp>
128 class __uniq_ptr_impl
129 {
130 template <typename _Up, typename _Ep, typename = void>
131 struct _Ptr
132 {
133 using type = _Up*;
134 };
135
136 template <typename _Up, typename _Ep>
137 struct
138 _Ptr<_Up, _Ep, __void_t<typename remove_reference<_Ep>::type::pointer>>
139 {
140 using type = typename remove_reference<_Ep>::type::pointer;
141 };
142
143 public:
144 using _DeleterConstraint = enable_if<
145 __and_<__not_<is_pointer<_Dp>>,
146 is_default_constructible<_Dp>>::value>;
147
148 using pointer = typename _Ptr<_Tp, _Dp>::type;
149
150 static_assert( !is_rvalue_reference<_Dp>::value,
151 "unique_ptr's deleter type must be a function object type"
152 " or an lvalue reference type" );
153
154 __uniq_ptr_impl() = default;
155 __uniq_ptr_impl(pointer __p) : _M_t() { _M_ptr() = __p; }
156
157 template<typename _Del>
158 __uniq_ptr_impl(pointer __p, _Del&& __d)
159 : _M_t(__p, std::forward<_Del>(__d)) { }
160
161 __uniq_ptr_impl(__uniq_ptr_impl&& __u) noexcept
162 : _M_t(std::move(__u._M_t))
163 { __u._M_ptr() = nullptr; }
164
165 __uniq_ptr_impl& operator=(__uniq_ptr_impl&& __u) noexcept
166 {
167 reset(__u.release());
168 _M_deleter() = std::forward<_Dp>(__u._M_deleter());
169 return *this;
170 }
171
172 pointer& _M_ptr() { return std::get<0>(_M_t); }
173 pointer _M_ptr() const { return std::get<0>(_M_t); }
174 _Dp& _M_deleter() { return std::get<1>(_M_t); }
175 const _Dp& _M_deleter() const { return std::get<1>(_M_t); }
176
177 void reset(pointer __p) noexcept
178 {
179 const pointer __old_p = _M_ptr();
180 _M_ptr() = __p;
181 if (__old_p)
182 _M_deleter()(__old_p);
183 }
184
185 pointer release() noexcept
186 {
187 pointer __p = _M_ptr();
188 _M_ptr() = nullptr;
189 return __p;
190 }
191
192 void
193 swap(__uniq_ptr_impl& __rhs) noexcept
194 {
195 using std::swap;
196 swap(this->_M_ptr(), __rhs._M_ptr());
197 swap(this->_M_deleter(), __rhs._M_deleter());
198 }
199
200 private:
201 tuple<pointer, _Dp> _M_t;
202 };
203
204 // Defines move construction + assignment as either defaulted or deleted.
205 template <typename _Tp, typename _Dp,
206 bool = is_move_constructible<_Dp>::value,
207 bool = is_move_assignable<_Dp>::value>
208 struct __uniq_ptr_data : __uniq_ptr_impl<_Tp, _Dp>
209 {
210 using __uniq_ptr_impl<_Tp, _Dp>::__uniq_ptr_impl;
211 __uniq_ptr_data(__uniq_ptr_data&&) = default;
212 __uniq_ptr_data& operator=(__uniq_ptr_data&&) = default;
213 };
214
215 template <typename _Tp, typename _Dp>
216 struct __uniq_ptr_data<_Tp, _Dp, true, false> : __uniq_ptr_impl<_Tp, _Dp>
217 {
218 using __uniq_ptr_impl<_Tp, _Dp>::__uniq_ptr_impl;
219 __uniq_ptr_data(__uniq_ptr_data&&) = default;
220 __uniq_ptr_data& operator=(__uniq_ptr_data&&) = delete;
221 };
222
223 template <typename _Tp, typename _Dp>
224 struct __uniq_ptr_data<_Tp, _Dp, false, true> : __uniq_ptr_impl<_Tp, _Dp>
225 {
226 using __uniq_ptr_impl<_Tp, _Dp>::__uniq_ptr_impl;
227 __uniq_ptr_data(__uniq_ptr_data&&) = delete;
228 __uniq_ptr_data& operator=(__uniq_ptr_data&&) = default;
229 };
230
231 template <typename _Tp, typename _Dp>
232 struct __uniq_ptr_data<_Tp, _Dp, false, false> : __uniq_ptr_impl<_Tp, _Dp>
233 {
234 using __uniq_ptr_impl<_Tp, _Dp>::__uniq_ptr_impl;
235 __uniq_ptr_data(__uniq_ptr_data&&) = delete;
236 __uniq_ptr_data& operator=(__uniq_ptr_data&&) = delete;
237 };
238 /// @endcond
239
240 /// 20.7.1.2 unique_ptr for single objects.
241 template <typename _Tp, typename _Dp = default_delete<_Tp>>
242 class unique_ptr
243 {
244 template <typename _Up>
245 using _DeleterConstraint =
246 typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type;
247
248 __uniq_ptr_data<_Tp, _Dp> _M_t;
249
250 public:
251 using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer;
252 using element_type = _Tp;
253 using deleter_type = _Dp;
254
255 private:
256 // helper template for detecting a safe conversion from another
257 // unique_ptr
258 template<typename _Up, typename _Ep>
259 using __safe_conversion_up = __and_<
260 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>,
261 __not_<is_array<_Up>>
262 >;
263
264 public:
265 // Constructors.
266
267 /// Default constructor, creates a unique_ptr that owns nothing.
268 template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>>
269 constexpr unique_ptr() noexcept
270 : _M_t()
271 { }
272
273 /** Takes ownership of a pointer.
274 *
275 * @param __p A pointer to an object of @c element_type
276 *
277 * The deleter will be value-initialized.
278 */
279 template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>>
280 explicit
281 unique_ptr(pointer __p) noexcept
282 : _M_t(__p)
283 { }
284
285 /** Takes ownership of a pointer.
286 *
287 * @param __p A pointer to an object of @c element_type
288 * @param __d A reference to a deleter.
289 *
290 * The deleter will be initialized with @p __d
291 */
292 template<typename _Del = deleter_type,
293 typename = _Require<is_copy_constructible<_Del>>>
294 unique_ptr(pointer __p, const deleter_type& __d) noexcept
295 : _M_t(__p, __d) { }
296
297 /** Takes ownership of a pointer.
298 *
299 * @param __p A pointer to an object of @c element_type
300 * @param __d An rvalue reference to a (non-reference) deleter.
301 *
302 * The deleter will be initialized with @p std::move(__d)
303 */
304 template<typename _Del = deleter_type,
305 typename = _Require<is_move_constructible<_Del>>>
306 unique_ptr(pointer __p,
307 __enable_if_t<!is_lvalue_reference<_Del>::value,
308 _Del&&> __d) noexcept
309 : _M_t(__p, std::move(__d))
310 { }
311
312 template<typename _Del = deleter_type,
313 typename _DelUnref = typename remove_reference<_Del>::type>
314 unique_ptr(pointer,
315 __enable_if_t<is_lvalue_reference<_Del>::value,
316 _DelUnref&&>) = delete;
317
318 /// Creates a unique_ptr that owns nothing.
319 template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>>
320 constexpr unique_ptr(nullptr_t) noexcept
321 : _M_t()
322 { }
323
324 // Move constructors.
325
326 /// Move constructor.
327 unique_ptr(unique_ptr&&) = default;
328
329 /** @brief Converting constructor from another type
330 *
331 * Requires that the pointer owned by @p __u is convertible to the
332 * type of pointer owned by this object, @p __u does not own an array,
333 * and @p __u has a compatible deleter type.
334 */
335 template<typename _Up, typename _Ep, typename = _Require<
336 __safe_conversion_up<_Up, _Ep>,
337 typename conditional<is_reference<_Dp>::value,
338 is_same<_Ep, _Dp>,
339 is_convertible<_Ep, _Dp>>::type>>
340 unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept
341 : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter()))
342 { }
343
344#if _GLIBCXX_USE_DEPRECATED1
345#pragma GCC diagnostic push
346#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
347 /// Converting constructor from @c auto_ptr
348 template<typename _Up, typename = _Require<
349 is_convertible<_Up*, _Tp*>, is_same<_Dp, default_delete<_Tp>>>>
350 unique_ptr(auto_ptr<_Up>&& __u) noexcept;
351#pragma GCC diagnostic pop
352#endif
353
354 /// Destructor, invokes the deleter if the stored pointer is not null.
355 ~unique_ptr() noexcept
356 {
357 static_assert(__is_invocable<deleter_type&, pointer>::value,
358 "unique_ptr's deleter must be invocable with a pointer");
359 auto& __ptr = _M_t._M_ptr();
360 if (__ptr != nullptr)
361 get_deleter()(std::move(__ptr));
362 __ptr = pointer();
363 }
364
365 // Assignment.
366
367 /** @brief Move assignment operator.
368 *
369 * Invokes the deleter if this object owns a pointer.
370 */
371 unique_ptr& operator=(unique_ptr&&) = default;
372
373 /** @brief Assignment from another type.
374 *
375 * @param __u The object to transfer ownership from, which owns a
376 * convertible pointer to a non-array object.
377 *
378 * Invokes the deleter if this object owns a pointer.
379 */
380 template<typename _Up, typename _Ep>
381 typename enable_if< __and_<
382 __safe_conversion_up<_Up, _Ep>,
383 is_assignable<deleter_type&, _Ep&&>
384 >::value,
385 unique_ptr&>::type
386 operator=(unique_ptr<_Up, _Ep>&& __u) noexcept
387 {
388 reset(__u.release());
389 get_deleter() = std::forward<_Ep>(__u.get_deleter());
390 return *this;
391 }
392
393 /// Reset the %unique_ptr to empty, invoking the deleter if necessary.
394 unique_ptr&
395 operator=(nullptr_t) noexcept
396 {
397 reset();
398 return *this;
399 }
400
401 // Observers.
402
403 /// Dereference the stored pointer.
404 typename add_lvalue_reference<element_type>::type
405 operator*() const
406 {
407 __glibcxx_assert(get() != pointer())do { if (! (get() != pointer())) std::__replacement_assert("/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h"
, 407, __PRETTY_FUNCTION__, "get() != pointer()"); } while (false
);
408 return *get();
409 }
410
411 /// Return the stored pointer.
412 pointer
413 operator->() const noexcept
414 {
415 _GLIBCXX_DEBUG_PEDASSERT(get() != pointer());
416 return get();
417 }
418
419 /// Return the stored pointer.
420 pointer
421 get() const noexcept
422 { return _M_t._M_ptr(); }
423
424 /// Return a reference to the stored deleter.
425 deleter_type&
426 get_deleter() noexcept
427 { return _M_t._M_deleter(); }
428
429 /// Return a reference to the stored deleter.
430 const deleter_type&
431 get_deleter() const noexcept
432 { return _M_t._M_deleter(); }
433
434 /// Return @c true if the stored pointer is not null.
435 explicit operator bool() const noexcept
436 { return get() == pointer() ? false : true; }
437
438 // Modifiers.
439
440 /// Release ownership of any stored pointer.
441 pointer
442 release() noexcept
443 { return _M_t.release(); }
444
445 /** @brief Replace the stored pointer.
446 *
447 * @param __p The new pointer to store.
448 *
449 * The deleter will be invoked if a pointer is already owned.
450 */
451 void
452 reset(pointer __p = pointer()) noexcept
453 {
454 static_assert(__is_invocable<deleter_type&, pointer>::value,
455 "unique_ptr's deleter must be invocable with a pointer");
456 _M_t.reset(std::move(__p));
457 }
458
459 /// Exchange the pointer and deleter with another object.
460 void
461 swap(unique_ptr& __u) noexcept
462 {
463 static_assert(__is_swappable<_Dp>::value, "deleter must be swappable");
464 _M_t.swap(__u._M_t);
465 }
466
467 // Disable copy from lvalue.
468 unique_ptr(const unique_ptr&) = delete;
469 unique_ptr& operator=(const unique_ptr&) = delete;
470 };
471
472 /// 20.7.1.3 unique_ptr for array objects with a runtime length
473 // [unique.ptr.runtime]
474 // _GLIBCXX_RESOLVE_LIB_DEFECTS
475 // DR 740 - omit specialization for array objects with a compile time length
476 template<typename _Tp, typename _Dp>
477 class unique_ptr<_Tp[], _Dp>
478 {
479 template <typename _Up>
480 using _DeleterConstraint =
481 typename __uniq_ptr_impl<_Tp, _Up>::_DeleterConstraint::type;
482
483 __uniq_ptr_data<_Tp, _Dp> _M_t;
484
485 template<typename _Up>
486 using __remove_cv = typename remove_cv<_Up>::type;
487
488 // like is_base_of<_Tp, _Up> but false if unqualified types are the same
489 template<typename _Up>
490 using __is_derived_Tp
491 = __and_< is_base_of<_Tp, _Up>,
492 __not_<is_same<__remove_cv<_Tp>, __remove_cv<_Up>>> >;
493
494 public:
495 using pointer = typename __uniq_ptr_impl<_Tp, _Dp>::pointer;
496 using element_type = _Tp;
497 using deleter_type = _Dp;
498
499 // helper template for detecting a safe conversion from another
500 // unique_ptr
501 template<typename _Up, typename _Ep,
502 typename _UPtr = unique_ptr<_Up, _Ep>,
503 typename _UP_pointer = typename _UPtr::pointer,
504 typename _UP_element_type = typename _UPtr::element_type>
505 using __safe_conversion_up = __and_<
506 is_array<_Up>,
507 is_same<pointer, element_type*>,
508 is_same<_UP_pointer, _UP_element_type*>,
509 is_convertible<_UP_element_type(*)[], element_type(*)[]>
510 >;
511
512 // helper template for detecting a safe conversion from a raw pointer
513 template<typename _Up>
514 using __safe_conversion_raw = __and_<
515 __or_<__or_<is_same<_Up, pointer>,
516 is_same<_Up, nullptr_t>>,
517 __and_<is_pointer<_Up>,
518 is_same<pointer, element_type*>,
519 is_convertible<
520 typename remove_pointer<_Up>::type(*)[],
521 element_type(*)[]>
522 >
523 >
524 >;
525
526 // Constructors.
527
528 /// Default constructor, creates a unique_ptr that owns nothing.
529 template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>>
530 constexpr unique_ptr() noexcept
531 : _M_t()
532 { }
533
534 /** Takes ownership of a pointer.
535 *
536 * @param __p A pointer to an array of a type safely convertible
537 * to an array of @c element_type
538 *
539 * The deleter will be value-initialized.
540 */
541 template<typename _Up,
542 typename _Vp = _Dp,
543 typename = _DeleterConstraint<_Vp>,
544 typename = typename enable_if<
545 __safe_conversion_raw<_Up>::value, bool>::type>
546 explicit
547 unique_ptr(_Up __p) noexcept
548 : _M_t(__p)
549 { }
550
551 /** Takes ownership of a pointer.
552 *
553 * @param __p A pointer to an array of a type safely convertible
554 * to an array of @c element_type
555 * @param __d A reference to a deleter.
556 *
557 * The deleter will be initialized with @p __d
558 */
559 template<typename _Up, typename _Del = deleter_type,
560 typename = _Require<__safe_conversion_raw<_Up>,
561 is_copy_constructible<_Del>>>
562 unique_ptr(_Up __p, const deleter_type& __d) noexcept
563 : _M_t(__p, __d) { }
564
565 /** Takes ownership of a pointer.
566 *
567 * @param __p A pointer to an array of a type safely convertible
568 * to an array of @c element_type
569 * @param __d A reference to a deleter.
570 *
571 * The deleter will be initialized with @p std::move(__d)
572 */
573 template<typename _Up, typename _Del = deleter_type,
574 typename = _Require<__safe_conversion_raw<_Up>,
575 is_move_constructible<_Del>>>
576 unique_ptr(_Up __p,
577 __enable_if_t<!is_lvalue_reference<_Del>::value,
578 _Del&&> __d) noexcept
579 : _M_t(std::move(__p), std::move(__d))
580 { }
581
582 template<typename _Up, typename _Del = deleter_type,
583 typename _DelUnref = typename remove_reference<_Del>::type,
584 typename = _Require<__safe_conversion_raw<_Up>>>
585 unique_ptr(_Up,
586 __enable_if_t<is_lvalue_reference<_Del>::value,
587 _DelUnref&&>) = delete;
588
589 /// Move constructor.
590 unique_ptr(unique_ptr&&) = default;
591
592 /// Creates a unique_ptr that owns nothing.
593 template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>>
594 constexpr unique_ptr(nullptr_t) noexcept
595 : _M_t()
596 { }
597
598 template<typename _Up, typename _Ep, typename = _Require<
599 __safe_conversion_up<_Up, _Ep>,
600 typename conditional<is_reference<_Dp>::value,
601 is_same<_Ep, _Dp>,
602 is_convertible<_Ep, _Dp>>::type>>
603 unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept
604 : _M_t(__u.release(), std::forward<_Ep>(__u.get_deleter()))
605 { }
606
607 /// Destructor, invokes the deleter if the stored pointer is not null.
608 ~unique_ptr()
609 {
610 auto& __ptr = _M_t._M_ptr();
611 if (__ptr != nullptr)
612 get_deleter()(__ptr);
613 __ptr = pointer();
614 }
615
616 // Assignment.
617
618 /** @brief Move assignment operator.
619 *
620 * Invokes the deleter if this object owns a pointer.
621 */
622 unique_ptr&
623 operator=(unique_ptr&&) = default;
624
625 /** @brief Assignment from another type.
626 *
627 * @param __u The object to transfer ownership from, which owns a
628 * convertible pointer to an array object.
629 *
630 * Invokes the deleter if this object owns a pointer.
631 */
632 template<typename _Up, typename _Ep>
633 typename
634 enable_if<__and_<__safe_conversion_up<_Up, _Ep>,
635 is_assignable<deleter_type&, _Ep&&>
636 >::value,
637 unique_ptr&>::type
638 operator=(unique_ptr<_Up, _Ep>&& __u) noexcept
639 {
640 reset(__u.release());
641 get_deleter() = std::forward<_Ep>(__u.get_deleter());
642 return *this;
643 }
644
645 /// Reset the %unique_ptr to empty, invoking the deleter if necessary.
646 unique_ptr&
647 operator=(nullptr_t) noexcept
648 {
649 reset();
650 return *this;
651 }
652
653 // Observers.
654
655 /// Access an element of owned array.
656 typename std::add_lvalue_reference<element_type>::type
657 operator[](size_t __i) const
658 {
659 __glibcxx_assert(get() != pointer())do { if (! (get() != pointer())) std::__replacement_assert("/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/unique_ptr.h"
, 659, __PRETTY_FUNCTION__, "get() != pointer()"); } while (false
);
660 return get()[__i];
661 }
662
663 /// Return the stored pointer.
664 pointer
665 get() const noexcept
666 { return _M_t._M_ptr(); }
667
668 /// Return a reference to the stored deleter.
669 deleter_type&
670 get_deleter() noexcept
671 { return _M_t._M_deleter(); }
672
673 /// Return a reference to the stored deleter.
674 const deleter_type&
675 get_deleter() const noexcept
676 { return _M_t._M_deleter(); }
677
678 /// Return @c true if the stored pointer is not null.
679 explicit operator bool() const noexcept
680 { return get() == pointer() ? false : true; }
681
682 // Modifiers.
683
684 /// Release ownership of any stored pointer.
685 pointer
686 release() noexcept
687 { return _M_t.release(); }
688
689 /** @brief Replace the stored pointer.
690 *
691 * @param __p The new pointer to store.
692 *
693 * The deleter will be invoked if a pointer is already owned.
694 */
695 template <typename _Up,
696 typename = _Require<
697 __or_<is_same<_Up, pointer>,
698 __and_<is_same<pointer, element_type*>,
699 is_pointer<_Up>,
700 is_convertible<
701 typename remove_pointer<_Up>::type(*)[],
702 element_type(*)[]
703 >
704 >
705 >
706 >>
707 void
708 reset(_Up __p) noexcept
709 { _M_t.reset(std::move(__p)); }
710
711 void reset(nullptr_t = nullptr) noexcept
712 { reset(pointer()); }
713
714 /// Exchange the pointer and deleter with another object.
715 void
716 swap(unique_ptr& __u) noexcept
717 {
718 static_assert(__is_swappable<_Dp>::value, "deleter must be swappable");
719 _M_t.swap(__u._M_t);
720 }
721
722 // Disable copy from lvalue.
723 unique_ptr(const unique_ptr&) = delete;
724 unique_ptr& operator=(const unique_ptr&) = delete;
725 };
726
727 /// @relates unique_ptr @{
728
729 /// Swap overload for unique_ptr
730 template<typename _Tp, typename _Dp>
731 inline
732#if __cplusplus201703L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11
733 // Constrained free swap overload, see p0185r1
734 typename enable_if<__is_swappable<_Dp>::value>::type
735#else
736 void
737#endif
738 swap(unique_ptr<_Tp, _Dp>& __x,
739 unique_ptr<_Tp, _Dp>& __y) noexcept
740 { __x.swap(__y); }
741
742#if __cplusplus201703L > 201402L || !defined(__STRICT_ANSI__1) // c++1z or gnu++11
743 template<typename _Tp, typename _Dp>
744 typename enable_if<!__is_swappable<_Dp>::value>::type
745 swap(unique_ptr<_Tp, _Dp>&,
746 unique_ptr<_Tp, _Dp>&) = delete;
747#endif
748
749 /// Equality operator for unique_ptr objects, compares the owned pointers
750 template<typename _Tp, typename _Dp,
751 typename _Up, typename _Ep>
752 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
753 operator==(const unique_ptr<_Tp, _Dp>& __x,
754 const unique_ptr<_Up, _Ep>& __y)
755 { return __x.get() == __y.get(); }
756
757 /// unique_ptr comparison with nullptr
758 template<typename _Tp, typename _Dp>
759 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
760 operator==(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept
761 { return !__x; }
762
763#ifndef __cpp_lib_three_way_comparison
764 /// unique_ptr comparison with nullptr
765 template<typename _Tp, typename _Dp>
766 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
767 operator==(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept
768 { return !__x; }
769
770 /// Inequality operator for unique_ptr objects, compares the owned pointers
771 template<typename _Tp, typename _Dp,
772 typename _Up, typename _Ep>
773 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
774 operator!=(const unique_ptr<_Tp, _Dp>& __x,
775 const unique_ptr<_Up, _Ep>& __y)
776 { return __x.get() != __y.get(); }
777
778 /// unique_ptr comparison with nullptr
779 template<typename _Tp, typename _Dp>
780 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
781 operator!=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept
782 { return (bool)__x; }
783
784 /// unique_ptr comparison with nullptr
785 template<typename _Tp, typename _Dp>
786 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
787 operator!=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept
788 { return (bool)__x; }
789#endif // three way comparison
790
791 /// Relational operator for unique_ptr objects, compares the owned pointers
792 template<typename _Tp, typename _Dp,
793 typename _Up, typename _Ep>
794 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
795 operator<(const unique_ptr<_Tp, _Dp>& __x,
796 const unique_ptr<_Up, _Ep>& __y)
797 {
798 typedef typename
799 std::common_type<typename unique_ptr<_Tp, _Dp>::pointer,
800 typename unique_ptr<_Up, _Ep>::pointer>::type _CT;
801 return std::less<_CT>()(__x.get(), __y.get());
802 }
803
804 /// unique_ptr comparison with nullptr
805 template<typename _Tp, typename _Dp>
806 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
807 operator<(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
808 {
809 return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(),
810 nullptr);
811 }
812
813 /// unique_ptr comparison with nullptr
814 template<typename _Tp, typename _Dp>
815 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
816 operator<(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
817 {
818 return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr,
819 __x.get());
820 }
821
822 /// Relational operator for unique_ptr objects, compares the owned pointers
823 template<typename _Tp, typename _Dp,
824 typename _Up, typename _Ep>
825 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
826 operator<=(const unique_ptr<_Tp, _Dp>& __x,
827 const unique_ptr<_Up, _Ep>& __y)
828 { return !(__y < __x); }
829
830 /// unique_ptr comparison with nullptr
831 template<typename _Tp, typename _Dp>
832 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
833 operator<=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
834 { return !(nullptr < __x); }
835
836 /// unique_ptr comparison with nullptr
837 template<typename _Tp, typename _Dp>
838 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
839 operator<=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
840 { return !(__x < nullptr); }
841
842 /// Relational operator for unique_ptr objects, compares the owned pointers
843 template<typename _Tp, typename _Dp,
844 typename _Up, typename _Ep>
845 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
846 operator>(const unique_ptr<_Tp, _Dp>& __x,
847 const unique_ptr<_Up, _Ep>& __y)
848 { return (__y < __x); }
849
850 /// unique_ptr comparison with nullptr
851 template<typename _Tp, typename _Dp>
852 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
853 operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
854 {
855 return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr,
856 __x.get());
857 }
858
859 /// unique_ptr comparison with nullptr
860 template<typename _Tp, typename _Dp>
861 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
862 operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
863 {
864 return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(),
865 nullptr);
866 }
867
868 /// Relational operator for unique_ptr objects, compares the owned pointers
869 template<typename _Tp, typename _Dp,
870 typename _Up, typename _Ep>
871 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
872 operator>=(const unique_ptr<_Tp, _Dp>& __x,
873 const unique_ptr<_Up, _Ep>& __y)
874 { return !(__x < __y); }
875
876 /// unique_ptr comparison with nullptr
877 template<typename _Tp, typename _Dp>
878 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
879 operator>=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
880 { return !(__x < nullptr); }
881
882 /// unique_ptr comparison with nullptr
883 template<typename _Tp, typename _Dp>
884 _GLIBCXX_NODISCARD[[__nodiscard__]] inline bool
885 operator>=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
886 { return !(nullptr < __x); }
887
888#ifdef __cpp_lib_three_way_comparison
889 template<typename _Tp, typename _Dp, typename _Up, typename _Ep>
890 requires three_way_comparable_with<typename unique_ptr<_Tp, _Dp>::pointer,
891 typename unique_ptr<_Up, _Ep>::pointer>
892 inline
893 compare_three_way_result_t<typename unique_ptr<_Tp, _Dp>::pointer,
894 typename unique_ptr<_Up, _Ep>::pointer>
895 operator<=>(const unique_ptr<_Tp, _Dp>& __x,
896 const unique_ptr<_Up, _Ep>& __y)
897 { return compare_three_way()(__x.get(), __y.get()); }
898
899 template<typename _Tp, typename _Dp>
900 requires three_way_comparable<typename unique_ptr<_Tp, _Dp>::pointer>
901 inline
902 compare_three_way_result_t<typename unique_ptr<_Tp, _Dp>::pointer>
903 operator<=>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
904 {
905 using pointer = typename unique_ptr<_Tp, _Dp>::pointer;
906 return compare_three_way()(__x.get(), static_cast<pointer>(nullptr));
907 }
908#endif
909 // @} relates unique_ptr
910
911 /// @cond undocumented
912 template<typename _Up, typename _Ptr = typename _Up::pointer,
913 bool = __poison_hash<_Ptr>::__enable_hash_call>
914 struct __uniq_ptr_hash
915#if ! _GLIBCXX_INLINE_VERSION0
916 : private __poison_hash<_Ptr>
917#endif
918 {
919 size_t
920 operator()(const _Up& __u) const
921 noexcept(noexcept(std::declval<hash<_Ptr>>()(std::declval<_Ptr>())))
922 { return hash<_Ptr>()(__u.get()); }
923 };
924
925 template<typename _Up, typename _Ptr>
926 struct __uniq_ptr_hash<_Up, _Ptr, false>
927 : private __poison_hash<_Ptr>
928 { };
929 /// @endcond
930
931 /// std::hash specialization for unique_ptr.
932 template<typename _Tp, typename _Dp>
933 struct hash<unique_ptr<_Tp, _Dp>>
934 : public __hash_base<size_t, unique_ptr<_Tp, _Dp>>,
935 public __uniq_ptr_hash<unique_ptr<_Tp, _Dp>>
936 { };
937
938#if __cplusplus201703L >= 201402L
939 /// @relates unique_ptr @{
940#define __cpp_lib_make_unique201304 201304
941
942 /// @cond undocumented
943
944 template<typename _Tp>
945 struct _MakeUniq
946 { typedef unique_ptr<_Tp> __single_object; };
947
948 template<typename _Tp>
949 struct _MakeUniq<_Tp[]>
950 { typedef unique_ptr<_Tp[]> __array; };
951
952 template<typename _Tp, size_t _Bound>
953 struct _MakeUniq<_Tp[_Bound]>
954 { struct __invalid_type { }; };
955
956 /// @endcond
957
958 /// std::make_unique for single objects
959 template<typename _Tp, typename... _Args>
960 inline typename _MakeUniq<_Tp>::__single_object
961 make_unique(_Args&&... __args)
962 { return unique_ptr<_Tp>(new _Tp(std::forward<_Args>(__args)...)); }
2
←
Memory is allocated
→
963
964 /// std::make_unique for arrays of unknown bound
965 template<typename _Tp>
966 inline typename _MakeUniq<_Tp>::__array
967 make_unique(size_t __num)
968 { return unique_ptr<_Tp>(new remove_extent_t<_Tp>[__num]()); }
969
970 /// Disable std::make_unique for arrays of known bound
971 template<typename _Tp, typename... _Args>
972 inline typename _MakeUniq<_Tp>::__invalid_type
973 make_unique(_Args&&...) = delete;
974 // @} relates unique_ptr
975#endif // C++14
976
977#if __cplusplus201703L > 201703L && __cpp_concepts
978 // _GLIBCXX_RESOLVE_LIB_DEFECTS
979 // 2948. unique_ptr does not define operator<< for stream output
980 /// Stream output operator for unique_ptr
981 template<typename _CharT, typename _Traits, typename _Tp, typename _Dp>
982 inline basic_ostream<_CharT, _Traits>&
983 operator<<(basic_ostream<_CharT, _Traits>& __os,
984 const unique_ptr<_Tp, _Dp>& __p)
985 requires requires { __os << __p.get(); }
986 {
987 __os << __p.get();
988 return __os;
989 }
990#endif // C++20
991
992 // @} group pointer_abstractions
993
994#if __cplusplus201703L >= 201703L
995 namespace __detail::__variant
996 {
997 template<typename> struct _Never_valueless_alt; // see <variant>
998
999 // Provide the strong exception-safety guarantee when emplacing a
1000 // unique_ptr into a variant.
1001 template<typename _Tp, typename _Del>
1002 struct _Never_valueless_alt<std::unique_ptr<_Tp, _Del>>
1003 : std::true_type
1004 { };
1005 } // namespace __detail::__variant
1006#endif // C++17
1007
1008_GLIBCXX_END_NAMESPACE_VERSION
1009} // namespace
1010
1011#endif /* _UNIQUE_PTR_H */