Xiangling_L updated this revision to Diff 263843.
Xiangling_L added a comment.
Fix a minor issue in the testcase
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D74166/new/
https://reviews.llvm.org/D74166
Files:
clang/include/clang/AST/Mangle.h
clang/lib/AST/ItaniumMangle.cpp
clang/lib/CodeGen/CGCXXABI.h
clang/lib/CodeGen/CGDeclCXX.cpp
clang/lib/CodeGen/CodeGenFunction.h
clang/lib/CodeGen/CodeGenModule.h
clang/lib/CodeGen/ItaniumCXXABI.cpp
clang/lib/Sema/SemaDeclAttr.cpp
clang/test/CodeGen/aix-constructor-attribute.cpp
clang/test/CodeGen/aix-destructor-attribute.cpp
clang/test/CodeGen/aix-init-priority-attribute.cpp
clang/test/CodeGen/static-init.cpp
Index: clang/test/CodeGen/static-init.cpp
===================================================================
--- clang/test/CodeGen/static-init.cpp
+++ clang/test/CodeGen/static-init.cpp
@@ -1,12 +1,55 @@
-// RUN: not %clang_cc1 -triple powerpc-ibm-aix-xcoff -S -emit-llvm -x c++ %s \
-// RUN: -o /dev/null 2>&1 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc-ibm-aix-xcoff -S -emit-llvm -x c++ < %s \
+// RUN: | FileCheck %s
-// RUN: not %clang_cc1 -triple powerpc64-ibm-aix-xcoff -S -emit-llvm -x c++ %s \
-// RUN: -o /dev/null 2>&1 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -S -emit-llvm -x c++ < %s \
+// RUN: | FileCheck %s
struct test {
test();
~test();
} t;
-// CHECK: error in backend: Static initialization has not been implemented on XL ABI yet.
+// CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @__sinit80000000_clang_b2e4830f1c9d2d063e5ea946868f3bfd, i8* null }]
+// CHECK: @llvm.global_dtors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @__sterm80000000_clang_b2e4830f1c9d2d063e5ea946868f3bfd, i8* null }]
+// CHECK: define dso_local void @__cxx_global_var_init() #0 {
+// CHECK: entry:
+// CHECK: call void @_ZN4testC1Ev(%struct.test* @t)
+// CHECK: %0 = call i32 @atexit(void ()* @__dtor_t)
+// CHECK: ret void
+// CHECK: }
+
+// CHECK: define dso_local void @__dtor_t() #0 {
+// CHECK: entry:
+// CHECK: call void @_ZN4testD1Ev(%struct.test* @t)
+// CHECK: ret void
+// CHECK: }
+
+// CHECK: declare i32 @atexit(void ()*)
+
+// CHECK: define dso_local void @__cxx_global_var_destruct_t() #0 {
+// CHECK: entry:
+// CHECK: %0 = call i32 @unatexit(void ()* @__dtor_t)
+// CHECK: %guard.hasSrterm = icmp eq i32 %0, 0
+// CHECK: br i1 %guard.hasSrterm, label %destruct.check, label %destruct.end
+
+// CHECK: destruct.check:
+// CHECK: call void @__dtor_t()
+// CHECK: br label %destruct.end
+
+// CHECK: destruct.end:
+// CHECK: ret void
+// CHECK: }
+
+// CHECK: declare i32 @unatexit(void ()*)
+
+// CHECK: define dso_local void @__sinit80000000_clang_b2e4830f1c9d2d063e5ea946868f3bfd() #0 {
+// CHECK: entry:
+// CHECK: call void @__cxx_global_var_init()
+// CHECK: ret void
+// CHECK: }
+
+// CHECK: define dso_local void @__sterm80000000_clang_b2e4830f1c9d2d063e5ea946868f3bfd() #0 {
+// CHECK: entry:
+// CHECK: call void @__cxx_global_var_destruct_t()
+// CHECK: ret void
+// CHECK: }
Index: clang/test/CodeGen/aix-init-priority-attribute.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGen/aix-init-priority-attribute.cpp
@@ -0,0 +1,16 @@
+// RUN: not %clang_cc1 -triple powerpc-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+// RUN: not %clang_cc1 -triple powerpc64-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+
+class test {
+ int a;
+public:
+ test(int c) {a = c;}
+ ~test() {a = 0;}
+};
+
+__attribute__ ((init_priority (2000)))
+test t(1);
+
+// CHECK: fatal error: error in backend: 'init_priority' attribute unsupported on AIX yet
Index: clang/test/CodeGen/aix-destructor-attribute.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGen/aix-destructor-attribute.cpp
@@ -0,0 +1,17 @@
+// RUN: not %clang_cc1 -triple powerpc-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+// RUN: not %clang_cc1 -triple powerpc64-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+
+int bar() __attribute__((destructor(180)));
+
+class test {
+ int a;
+public:
+ test(int c) {a = c;}
+ ~test() {a = 0;}
+};
+
+test t(1);
+
+// CHECK: fatal error: error in backend: 'destructor' attribute unsupported on AIX yet
Index: clang/test/CodeGen/aix-constructor-attribute.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGen/aix-constructor-attribute.cpp
@@ -0,0 +1,17 @@
+// RUN: not %clang_cc1 -triple powerpc-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+// RUN: not %clang_cc1 -triple powerpc64-ibm-aix-xcoff -x c++ -emit-llvm < %s \
+// RUN: 2>&1 | FileCheck %s
+
+int foo() __attribute__((constructor(180)));
+
+class test {
+ int a;
+public:
+ test(int c) {a = c;}
+ ~test() {a = 0;}
+};
+
+test t(1);
+
+// CHECK: fatal error: error in backend: 'constructor' attribute unsupported on AIX yet
Index: clang/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- clang/lib/Sema/SemaDeclAttr.cpp
+++ clang/lib/Sema/SemaDeclAttr.cpp
@@ -6895,13 +6895,19 @@
handlePassObjectSizeAttr(S, D, AL);
break;
case ParsedAttr::AT_Constructor:
- handleConstructorAttr(S, D, AL);
+ if (S.Context.getTargetInfo().getTriple().isOSAIX())
+ llvm::report_fatal_error("'constructor' attribute unsupported on AIX yet");
+ else
+ handleConstructorAttr(S, D, AL);
break;
case ParsedAttr::AT_Deprecated:
handleDeprecatedAttr(S, D, AL);
break;
case ParsedAttr::AT_Destructor:
- handleDestructorAttr(S, D, AL);
+ if (S.Context.getTargetInfo().getTriple().isOSAIX())
+ llvm::report_fatal_error("'destructor' attribute unsupported on AIX yet");
+ else
+ handleDestructorAttr(S, D, AL);
break;
case ParsedAttr::AT_EnableIf:
handleEnableIfAttr(S, D, AL);
@@ -7095,7 +7101,10 @@
handleVecTypeHint(S, D, AL);
break;
case ParsedAttr::AT_InitPriority:
- handleInitPriorityAttr(S, D, AL);
+ if (S.Context.getTargetInfo().getTriple().isOSAIX())
+ llvm::report_fatal_error("'init_priority' attribute unsupported on AIX yet");
+ else
+ handleInitPriorityAttr(S, D, AL);
break;
case ParsedAttr::AT_Packed:
handlePackedAttr(S, D, AL);
Index: clang/lib/CodeGen/ItaniumCXXABI.cpp
===================================================================
--- clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -525,6 +525,15 @@
void registerGlobalDtor(CodeGenFunction &CGF, const VarDecl &D,
llvm::FunctionCallee dtor,
llvm::Constant *addr) override;
+
+ bool useSinitAndSterm() const override { return true; }
+
+ bool isCXXGlobalInitAndDtorFuncInternal() const override { return false; }
+
+private:
+ void emitCXXGlobalVarDeclDestructFunc(const VarDecl &D,
+ llvm::Function *dtorStub,
+ llvm::Constant *addr);
};
}
@@ -4431,6 +4440,63 @@
void XLCXXABI::registerGlobalDtor(CodeGenFunction &CGF, const VarDecl &D,
llvm::FunctionCallee dtor,
llvm::Constant *addr) {
- llvm::report_fatal_error("Static initialization has not been implemented on"
- " XL ABI yet.");
+ if (D.getTLSKind() != VarDecl::TLS_None)
+ llvm::report_fatal_error("thread local storage unimplemented on AIX yet");
+
+ // Create __srterm function for the var decl.
+ llvm::Function *dtorStub = CGF.createAtExitStub(D, dtor, addr);
+
+ // Register above __srterm with atexit().
+ CGF.registerGlobalDtorWithAtExit(dtorStub);
+
+ // Emit __sterm function to unregister __srterm and call __srterm.
+ emitCXXGlobalVarDeclDestructFunc(D, dtorStub, addr);
+}
+
+void XLCXXABI::emitCXXGlobalVarDeclDestructFunc(const VarDecl &D,
+ llvm::Function *dtorStub,
+ llvm::Constant *addr) {
+ llvm::FunctionType *FTy = llvm::FunctionType::get(CGM.VoidTy, false);
+ SmallString<256> FnName;
+ {
+ llvm::raw_svector_ostream Out(FnName);
+ getMangleContext().mangleDynamicDestructor(&D, Out);
+ }
+
+ // Create a variable destruction function.
+ const CGFunctionInfo &FI = CGM.getTypes().arrangeNullaryFunction();
+ llvm::Function *StermFn = CGM.CreateGlobalInitOrDestructFunction(
+ FTy, FnName.str(), FI, D.getLocation());
+
+ CodeGenFunction CGF(CGM);
+
+ CGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, StermFn, FI,
+ FunctionArgList());
+
+ // Unregister the dtorStub.
+ llvm::Value *V = CGF.unregisterGlobalDtorWithUnAtExit(dtorStub);
+
+ llvm::Value *NeedsDestruct = CGF.Builder.CreateIsNull(V, "guard.hasSrterm");
+
+ llvm::BasicBlock *DestructCheckBlock = CGF.createBasicBlock("destruct.check");
+ llvm::BasicBlock *EndBlock = CGF.createBasicBlock("destruct.end");
+
+ // Check if the guard variable is zero.
+ CGF.EmitCXXGuardedInitBranch(NeedsDestruct, DestructCheckBlock, EndBlock,
+ CodeGenFunction::GuardKind::VariableGuard, &D);
+
+ CGF.EmitBlock(DestructCheckBlock);
+
+ // Emit the call to dtorStub.
+ llvm::CallInst *CI = CGF.Builder.CreateCall(dtorStub);
+
+ // Make sure the call and the callee agree on calling convention.
+ if (llvm::Function *F = cast<llvm::Function>(dtorStub))
+ CI->setCallingConv(F->getCallingConv());
+
+ CGF.EmitBlock(EndBlock);
+
+ CGF.FinishFunction();
+
+ CGM.AddCXXDtorEntry(StermFn);
}
Index: clang/lib/CodeGen/CodeGenModule.h
===================================================================
--- clang/lib/CodeGen/CodeGenModule.h
+++ clang/lib/CodeGen/CodeGenModule.h
@@ -17,6 +17,7 @@
#include "CodeGenTypeCache.h"
#include "CodeGenTypes.h"
#include "SanitizerMetadata.h"
+#include "clang/AST/Attr.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclOpenMP.h"
@@ -396,6 +397,10 @@
/// emitted when the translation unit is complete.
CtorList GlobalDtors;
+ /// A unique trailing identifier as a part of sinit/sterm function when
+ /// UserSinitAndSterm set as true.
+ std::string GlobalUniqueModuleId;
+
/// An ordered map of canonical GlobalDecls to their mangled names.
llvm::MapVector<GlobalDecl, StringRef> MangledDeclNames;
llvm::StringMap<GlobalDecl, llvm::BumpPtrAllocator> Manglings;
@@ -1048,6 +1053,12 @@
Object);
}
+ /// Add a destructor to the C++ global destructor function.
+ void AddCXXDtorEntry(llvm::FunctionCallee DtorFn) {
+ CXXGlobalDtors.emplace_back(DtorFn.getFunctionType(), DtorFn.getCallee(),
+ nullptr);
+ }
+
/// Create or return a runtime function declaration with the specified type
/// and name. If \p AssumeConvergent is true, the call will have the
/// convergent attribute added.
Index: clang/lib/CodeGen/CodeGenFunction.h
===================================================================
--- clang/lib/CodeGen/CodeGenFunction.h
+++ clang/lib/CodeGen/CodeGenFunction.h
@@ -4143,6 +4143,9 @@
/// Call atexit() with function dtorStub.
void registerGlobalDtorWithAtExit(llvm::Constant *dtorStub);
+ /// Call unatexit() with function dtorStub.
+ llvm::Value *unregisterGlobalDtorWithUnAtExit(llvm::Constant *dtorStub);
+
/// Emit code in this function to perform a guarded variable
/// initialization. Guarded initializations are used when it's not
/// possible to prove that an initialization will be done exactly
Index: clang/lib/CodeGen/CGDeclCXX.cpp
===================================================================
--- clang/lib/CodeGen/CGDeclCXX.cpp
+++ clang/lib/CodeGen/CGDeclCXX.cpp
@@ -20,7 +20,9 @@
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/MDBuilder.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/Path.h"
+#include "llvm/Transforms/Utils/ModuleUtils.h"
using namespace clang;
using namespace CodeGen;
@@ -249,7 +251,7 @@
llvm::CallInst *call = CGF.Builder.CreateCall(dtor, addr);
- // Make sure the call and the callee agree on calling convention.
+ // Make sure the call and the callee agree on calling convention.
if (auto *dtorFn = dyn_cast<llvm::Function>(
dtor.getCallee()->stripPointerCastsAndAliases()))
call->setCallingConv(dtorFn->getCallingConv());
@@ -270,8 +272,12 @@
void CodeGenFunction::registerGlobalDtorWithAtExit(llvm::Constant *dtorStub) {
// extern "C" int atexit(void (*f)(void));
+ assert(cast<llvm::Function>(dtorStub)->getFunctionType() ==
+ llvm::FunctionType::get(CGM.VoidTy, false) &&
+ "atexit has wrong parameter type.");
+
llvm::FunctionType *atexitTy =
- llvm::FunctionType::get(IntTy, dtorStub->getType(), false);
+ llvm::FunctionType::get(IntTy, dtorStub->getType(), false);
llvm::FunctionCallee atexit =
CGM.CreateRuntimeFunction(atexitTy, "atexit", llvm::AttributeList(),
@@ -282,6 +288,24 @@
EmitNounwindRuntimeCall(atexit, dtorStub);
}
+llvm::Value *
+CodeGenFunction::unregisterGlobalDtorWithUnAtExit(llvm::Constant *dtorStub) {
+ // extern "C" int unatexit(void (*f)(void));
+ assert(cast<llvm::Function>(dtorStub)->getFunctionType() ==
+ llvm::FunctionType::get(CGM.VoidTy, false) &&
+ "unatexit has wrong parameter type.");
+
+ llvm::FunctionType *unatexitTy =
+ llvm::FunctionType::get(IntTy, {dtorStub->getType()}, /*isVarArg=*/false);
+
+ llvm::FunctionCallee unatexit =
+ CGM.CreateRuntimeFunction(unatexitTy, "unatexit", llvm::AttributeList());
+ if (llvm::Function *unatexitFn = cast<llvm::Function>(unatexit.getCallee()))
+ unatexitFn->setDoesNotThrow();
+
+ return EmitNounwindRuntimeCall(unatexit, dtorStub);
+}
+
void CodeGenFunction::EmitCXXGuardedInit(const VarDecl &D,
llvm::GlobalVariable *DeclPtr,
bool PerformInit) {
@@ -347,6 +371,9 @@
SetInternalFunctionAttributes(GlobalDecl(), Fn, FI);
+ if (!getCXXABI().isCXXGlobalInitAndDtorFuncInternal())
+ Fn->setLinkage(llvm::Function::ExternalLinkage);
+
Fn->setCallingConv(getRuntimeCC());
if (!getLangOpts().Exceptions)
@@ -533,6 +560,22 @@
CXXThreadLocals.clear();
}
+static std::string getTransformedFileName(llvm::Module &M) {
+ SmallString<128> FileName = llvm::sys::path::filename(M.getName());
+
+ if (FileName.empty())
+ FileName = "<null>";
+
+ for (size_t i = 0; i < FileName.size(); ++i) {
+ // Replace everything that's not [a-zA-Z0-9._] with a _. This set happens
+ // to be the set of C preprocessing numbers.
+ if (!isPreprocessingNumberBody(FileName[i]))
+ FileName[i] = '_';
+ }
+
+ return FileName.c_str();
+}
+
void
CodeGenModule::EmitCXXGlobalInitFunc() {
while (!CXXGlobalInits.empty() && !CXXGlobalInits.back())
@@ -541,11 +584,18 @@
if (CXXGlobalInits.empty() && PrioritizedCXXGlobalInits.empty())
return;
+ bool UseSinitAndSterm = getCXXABI().useSinitAndSterm();
+ if (UseSinitAndSterm)
+ GlobalUniqueModuleId = getUniqueModuleId(&getModule()).substr(1);
+
llvm::FunctionType *FTy = llvm::FunctionType::get(VoidTy, false);
const CGFunctionInfo &FI = getTypes().arrangeNullaryFunction();
- // Create our global initialization function.
+ // Create our global prioritized initialization function.
if (!PrioritizedCXXGlobalInits.empty()) {
+ assert(!UseSinitAndSterm && "Prioritized Sinit and Sterm functions are not"
+ " supported yet.");
+
SmallVector<llvm::Function *, 8> LocalCXXGlobalInits;
llvm::array_pod_sort(PrioritizedCXXGlobalInits.begin(),
PrioritizedCXXGlobalInits.end());
@@ -577,45 +627,44 @@
PrioritizedCXXGlobalInits.clear();
}
- // Include the filename in the symbol name. Including "sub_" matches gcc and
- // makes sure these symbols appear lexicographically behind the symbols with
- // priority emitted above.
- SmallString<128> FileName = llvm::sys::path::filename(getModule().getName());
- if (FileName.empty())
- FileName = "<null>";
-
- for (size_t i = 0; i < FileName.size(); ++i) {
- // Replace everything that's not [a-zA-Z0-9._] with a _. This set happens
- // to be the set of C preprocessing numbers.
- if (!isPreprocessingNumberBody(FileName[i]))
- FileName[i] = '_';
- }
+ // Create our global initialization function.
+ if (!CXXGlobalInits.empty()) {
+ // Include the filename in the symbol name. When not using sinit and sterm
+ // functions, including "sub_" matches gcc and makes sure these symbols
+ // appear lexicographically behind the symbols with priority emitted above.
+ std::string FuncSuffix = UseSinitAndSterm
+ ? GlobalUniqueModuleId
+ : getTransformedFileName(getModule());
+
+ llvm::Function *Fn = CreateGlobalInitOrDestructFunction(
+ FTy,
+ (UseSinitAndSterm ? "__sinit80000000_clang_" : "_GLOBAL__sub_I_") +
+ FuncSuffix,
+ FI, SourceLocation());
+
+ CodeGenFunction(*this).GenerateCXXGlobalInitFunc(Fn, CXXGlobalInits);
+ AddGlobalCtor(Fn);
+
+ // In OpenCL global init functions must be converted to kernels in order to
+ // be able to launch them from the host.
+ // FIXME: Some more work might be needed to handle destructors correctly.
+ // Current initialization function makes use of function pointers callbacks.
+ // We can't support function pointers especially between host and device.
+ // However it seems global destruction has little meaning without any
+ // dynamic resource allocation on the device and program scope variables are
+ // destroyed by the runtime when program is released.
+ if (getLangOpts().OpenCL) {
+ GenOpenCLArgMetadata(Fn);
+ Fn->setCallingConv(llvm::CallingConv::SPIR_KERNEL);
+ }
- llvm::Function *Fn = CreateGlobalInitOrDestructFunction(
- FTy, llvm::Twine("_GLOBAL__sub_I_", FileName), FI);
-
- CodeGenFunction(*this).GenerateCXXGlobalInitFunc(Fn, CXXGlobalInits);
- AddGlobalCtor(Fn);
-
- // In OpenCL global init functions must be converted to kernels in order to
- // be able to launch them from the host.
- // FIXME: Some more work might be needed to handle destructors correctly.
- // Current initialization function makes use of function pointers callbacks.
- // We can't support function pointers especially between host and device.
- // However it seems global destruction has little meaning without any
- // dynamic resource allocation on the device and program scope variables are
- // destroyed by the runtime when program is released.
- if (getLangOpts().OpenCL) {
- GenOpenCLArgMetadata(Fn);
- Fn->setCallingConv(llvm::CallingConv::SPIR_KERNEL);
- }
+ if (getLangOpts().HIP) {
+ Fn->setCallingConv(llvm::CallingConv::AMDGPU_KERNEL);
+ Fn->addFnAttr("device-init");
+ }
- if (getLangOpts().HIP) {
- Fn->setCallingConv(llvm::CallingConv::AMDGPU_KERNEL);
- Fn->addFnAttr("device-init");
+ CXXGlobalInits.clear();
}
-
- CXXGlobalInits.clear();
}
void CodeGenModule::EmitCXXGlobalDtorFunc() {
@@ -623,14 +672,23 @@
return;
llvm::FunctionType *FTy = llvm::FunctionType::get(VoidTy, false);
+ const CGFunctionInfo &FI = getTypes().arrangeNullaryFunction();
+ bool UseSinitAndSterm = getCXXABI().useSinitAndSterm();
// Create our global destructor function.
- const CGFunctionInfo &FI = getTypes().arrangeNullaryFunction();
- llvm::Function *Fn =
- CreateGlobalInitOrDestructFunction(FTy, "_GLOBAL__D_a", FI);
+ llvm::Function *Fn = nullptr;
+ if (UseSinitAndSterm) {
+ std::string FuncSuffix = GlobalUniqueModuleId;
+ Fn = CreateGlobalInitOrDestructFunction(
+ FTy, llvm::Twine("__sterm80000000_clang_") + FuncSuffix, FI,
+ SourceLocation());
+ } else {
+ Fn = CreateGlobalInitOrDestructFunction(FTy, "_GLOBAL__D_a", FI);
+ }
CodeGenFunction(*this).GenerateCXXGlobalDtorsFunc(Fn, CXXGlobalDtors);
AddGlobalDtor(Fn);
+ CXXGlobalDtors.clear();
}
/// Emit the code necessary to initialize the given global variable.
@@ -743,7 +801,9 @@
llvm::Value *Callee;
llvm::Constant *Arg;
std::tie(CalleeTy, Callee, Arg) = DtorsAndObjects[e - i - 1];
- llvm::CallInst *CI = Builder.CreateCall(CalleeTy, Callee, Arg);
+ llvm::CallInst *CI = (Arg == nullptr)
+ ? Builder.CreateCall(CalleeTy, Callee)
+ : Builder.CreateCall(CalleeTy, Callee, Arg);
// Make sure the call and the callee agree on calling convention.
if (llvm::Function *F = dyn_cast<llvm::Function>(Callee))
CI->setCallingConv(F->getCallingConv());
Index: clang/lib/CodeGen/CGCXXABI.h
===================================================================
--- clang/lib/CodeGen/CGCXXABI.h
+++ clang/lib/CodeGen/CGCXXABI.h
@@ -107,6 +107,10 @@
virtual bool hasMostDerivedReturn(GlobalDecl GD) const { return false; }
+ virtual bool useSinitAndSterm() const { return false; }
+
+ virtual bool isCXXGlobalInitAndDtorFuncInternal() const { return true; }
+
/// Returns true if the target allows calling a function through a pointer
/// with a different signature than the actual function (or equivalently,
/// bitcasting a function or function pointer to a different function type).
Index: clang/lib/AST/ItaniumMangle.cpp
===================================================================
--- clang/lib/AST/ItaniumMangle.cpp
+++ clang/lib/AST/ItaniumMangle.cpp
@@ -160,6 +160,7 @@
void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
void mangleDynamicAtExitDestructor(const VarDecl *D,
raw_ostream &Out) override;
+ void mangleDynamicDestructor(const VarDecl *D, raw_ostream &Out) override;
void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl,
raw_ostream &Out) override;
void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl,
@@ -5201,6 +5202,13 @@
Mangler.getStream() << D->getName();
}
+void ItaniumMangleContextImpl::mangleDynamicDestructor(const VarDecl *D,
+ raw_ostream &Out) {
+ // Clang generates these internal-linkage functions as part of its
+ // implementation of the XL_Clang ABI.
+ Out << "__cxx_global_var_destruct_" << *D;
+}
+
void ItaniumMangleContextImpl::mangleSEHFilterExpression(
const NamedDecl *EnclosingDecl, raw_ostream &Out) {
CXXNameMangler Mangler(*this, Out);
Index: clang/include/clang/AST/Mangle.h
===================================================================
--- clang/include/clang/AST/Mangle.h
+++ clang/include/clang/AST/Mangle.h
@@ -175,6 +175,8 @@
virtual void mangleLambdaSig(const CXXRecordDecl *Lambda, raw_ostream &) = 0;
+ virtual void mangleDynamicDestructor(const VarDecl *D, raw_ostream &Out) = 0;
+
bool isUniqueNameMangler() { return IsUniqueNameMangler; }
static bool classof(const MangleContext *C) {
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