[llvm-branch-commits] [clang] release/19.x: [clang-repl] [codegen] Reduce the state in TBAA. NFC for static compilation. (#98138) (PR #111953)
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llvm-branch-commits at lists.llvm.org
Thu Oct 10 22:53:26 PDT 2024
https://github.com/llvmbot created https://github.com/llvm/llvm-project/pull/111953
Backport 6c62ad446b2441b78ae524d9e700e351d5a76394
Requested by: @tru
>From e20d6985547098429785181a69ba8d492fc5f4b9 Mon Sep 17 00:00:00 2001
From: Vassil Vassilev <v.g.vassilev at gmail.com>
Date: Wed, 21 Aug 2024 07:22:31 +0200
Subject: [PATCH] [clang-repl] [codegen] Reduce the state in TBAA. NFC for
static compilation. (#98138)
In incremental compilation clang works with multiple `llvm::Module`s.
Our current approach is to create a CodeGenModule entity for every new
module request (via StartModule). However, some of the state such as the
mangle context needs to be preserved to keep the original semantics in
the ever-growing TU.
Fixes: llvm/llvm-project#95581.
cc: @jeaye
(cherry picked from commit 6c62ad446b2441b78ae524d9e700e351d5a76394)
---
clang/lib/CodeGen/CGCall.cpp | 31 +++++++++----------
clang/lib/CodeGen/CGClass.cpp | 2 +-
clang/lib/CodeGen/CodeGenModule.cpp | 15 +++++----
clang/lib/CodeGen/CodeGenModule.h | 5 +--
clang/lib/CodeGen/CodeGenTBAA.cpp | 13 +++++---
clang/lib/CodeGen/CodeGenTBAA.h | 5 +--
clang/lib/CodeGen/CodeGenTypes.cpp | 7 +++--
clang/lib/CodeGen/CodeGenTypes.h | 8 +----
clang/lib/CodeGen/MicrosoftCXXABI.cpp | 2 +-
.../assigment-with-implicit-ctor.cpp | 13 ++++++++
10 files changed, 56 insertions(+), 45 deletions(-)
create mode 100644 clang/test/Interpreter/assigment-with-implicit-ctor.cpp
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index d7ebffa8c5e4e0..0416fa03d749a5 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -314,7 +314,8 @@ CodeGenTypes::arrangeCXXMethodDeclaration(const CXXMethodDecl *MD) {
if (MD->isImplicitObjectMemberFunction()) {
// The abstract case is perfectly fine.
- const CXXRecordDecl *ThisType = TheCXXABI.getThisArgumentTypeForMethod(MD);
+ const CXXRecordDecl *ThisType =
+ getCXXABI().getThisArgumentTypeForMethod(MD);
return arrangeCXXMethodType(ThisType, prototype.getTypePtr(), MD);
}
@@ -337,7 +338,7 @@ CodeGenTypes::arrangeCXXStructorDeclaration(GlobalDecl GD) {
SmallVector<CanQualType, 16> argTypes;
SmallVector<FunctionProtoType::ExtParameterInfo, 16> paramInfos;
- const CXXRecordDecl *ThisType = TheCXXABI.getThisArgumentTypeForMethod(GD);
+ const CXXRecordDecl *ThisType = getCXXABI().getThisArgumentTypeForMethod(GD);
argTypes.push_back(DeriveThisType(ThisType, MD));
bool PassParams = true;
@@ -356,7 +357,7 @@ CodeGenTypes::arrangeCXXStructorDeclaration(GlobalDecl GD) {
appendParameterTypes(*this, argTypes, paramInfos, FTP);
CGCXXABI::AddedStructorArgCounts AddedArgs =
- TheCXXABI.buildStructorSignature(GD, argTypes);
+ getCXXABI().buildStructorSignature(GD, argTypes);
if (!paramInfos.empty()) {
// Note: prefix implies after the first param.
if (AddedArgs.Prefix)
@@ -372,11 +373,10 @@ CodeGenTypes::arrangeCXXStructorDeclaration(GlobalDecl GD) {
: RequiredArgs::All);
FunctionType::ExtInfo extInfo = FTP->getExtInfo();
- CanQualType resultType = TheCXXABI.HasThisReturn(GD)
- ? argTypes.front()
- : TheCXXABI.hasMostDerivedReturn(GD)
- ? CGM.getContext().VoidPtrTy
- : Context.VoidTy;
+ CanQualType resultType = getCXXABI().HasThisReturn(GD) ? argTypes.front()
+ : getCXXABI().hasMostDerivedReturn(GD)
+ ? CGM.getContext().VoidPtrTy
+ : Context.VoidTy;
return arrangeLLVMFunctionInfo(resultType, FnInfoOpts::IsInstanceMethod,
argTypes, extInfo, paramInfos, required);
}
@@ -437,11 +437,10 @@ CodeGenTypes::arrangeCXXConstructorCall(const CallArgList &args,
: RequiredArgs::All;
GlobalDecl GD(D, CtorKind);
- CanQualType ResultType = TheCXXABI.HasThisReturn(GD)
- ? ArgTypes.front()
- : TheCXXABI.hasMostDerivedReturn(GD)
- ? CGM.getContext().VoidPtrTy
- : Context.VoidTy;
+ CanQualType ResultType = getCXXABI().HasThisReturn(GD) ? ArgTypes.front()
+ : getCXXABI().hasMostDerivedReturn(GD)
+ ? CGM.getContext().VoidPtrTy
+ : Context.VoidTy;
FunctionType::ExtInfo Info = FPT->getExtInfo();
llvm::SmallVector<FunctionProtoType::ExtParameterInfo, 16> ParamInfos;
@@ -806,7 +805,7 @@ const CGFunctionInfo &CodeGenTypes::arrangeLLVMFunctionInfo(
} else if (info.getCC() == CC_Swift || info.getCC() == CC_SwiftAsync) {
swiftcall::computeABIInfo(CGM, *FI);
} else {
- getABIInfo().computeInfo(*FI);
+ CGM.getABIInfo().computeInfo(*FI);
}
// Loop over all of the computed argument and return value info. If any of
@@ -6022,6 +6021,6 @@ RValue CodeGenFunction::EmitVAArg(VAArgExpr *VE, Address &VAListAddr,
: EmitVAListRef(VE->getSubExpr());
QualType Ty = VE->getType();
if (VE->isMicrosoftABI())
- return CGM.getTypes().getABIInfo().EmitMSVAArg(*this, VAListAddr, Ty, Slot);
- return CGM.getTypes().getABIInfo().EmitVAArg(*this, VAListAddr, Ty, Slot);
+ return CGM.getABIInfo().EmitMSVAArg(*this, VAListAddr, Ty, Slot);
+ return CGM.getABIInfo().EmitVAArg(*this, VAListAddr, Ty, Slot);
}
diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
index 667e260f2228dc..e5ba50de3462da 100644
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -209,7 +209,7 @@ CodeGenModule::GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
return nullptr;
llvm::Type *PtrDiffTy =
- Types.ConvertType(getContext().getPointerDiffType());
+ getTypes().ConvertType(getContext().getPointerDiffType());
return llvm::ConstantInt::get(PtrDiffTy, Offset.getQuantity());
}
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 63ed5b4dd0c310..cf5e29e5a3db8d 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -343,10 +343,11 @@ CodeGenModule::CodeGenModule(ASTContext &C,
: Context(C), LangOpts(C.getLangOpts()), FS(FS), HeaderSearchOpts(HSO),
PreprocessorOpts(PPO), CodeGenOpts(CGO), TheModule(M), Diags(diags),
Target(C.getTargetInfo()), ABI(createCXXABI(*this)),
- VMContext(M.getContext()), Types(*this), VTables(*this),
+ VMContext(M.getContext()), VTables(*this),
SanitizerMD(new SanitizerMetadata(*this)) {
// Initialize the type cache.
+ Types.reset(new CodeGenTypes(*this));
llvm::LLVMContext &LLVMContext = M.getContext();
VoidTy = llvm::Type::getVoidTy(LLVMContext);
Int8Ty = llvm::Type::getInt8Ty(LLVMContext);
@@ -405,7 +406,7 @@ CodeGenModule::CodeGenModule(ASTContext &C,
if (LangOpts.Sanitize.has(SanitizerKind::Thread) ||
(!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0))
TBAA.reset(new CodeGenTBAA(Context, getTypes(), TheModule, CodeGenOpts,
- getLangOpts(), getCXXABI().getMangleContext()));
+ getLangOpts()));
// If debug info or coverage generation is enabled, create the CGDebugInfo
// object.
@@ -1452,12 +1453,12 @@ void CodeGenModule::EmitBackendOptionsMetadata(
void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
// Make sure that this type is translated.
- Types.UpdateCompletedType(TD);
+ getTypes().UpdateCompletedType(TD);
}
void CodeGenModule::RefreshTypeCacheForClass(const CXXRecordDecl *RD) {
// Make sure that this type is translated.
- Types.RefreshTypeCacheForClass(RD);
+ getTypes().RefreshTypeCacheForClass(RD);
}
llvm::MDNode *CodeGenModule::getTBAATypeInfo(QualType QTy) {
@@ -5376,6 +5377,10 @@ void CodeGenModule::maybeSetTrivialComdat(const Decl &D,
GO.setComdat(TheModule.getOrInsertComdat(GO.getName()));
}
+const ABIInfo &CodeGenModule::getABIInfo() {
+ return getTargetCodeGenInfo().getABIInfo();
+}
+
/// Pass IsTentative as true if you want to create a tentative definition.
void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
bool IsTentative) {
@@ -7784,7 +7789,5 @@ void CodeGenModule::moveLazyEmissionStates(CodeGenModule *NewBuilder) {
NewBuilder->WeakRefReferences = std::move(WeakRefReferences);
- NewBuilder->TBAA = std::move(TBAA);
-
NewBuilder->ABI->MangleCtx = std::move(ABI->MangleCtx);
}
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 284bba823baeb4..c58bb88035ca8a 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -320,7 +320,7 @@ class CodeGenModule : public CodeGenTypeCache {
// This should not be moved earlier, since its initialization depends on some
// of the previous reference members being already initialized and also checks
// if TheTargetCodeGenInfo is NULL
- CodeGenTypes Types;
+ std::unique_ptr<CodeGenTypes> Types;
/// Holds information about C++ vtables.
CodeGenVTables VTables;
@@ -776,6 +776,7 @@ class CodeGenModule : public CodeGenTypeCache {
bool supportsCOMDAT() const;
void maybeSetTrivialComdat(const Decl &D, llvm::GlobalObject &GO);
+ const ABIInfo &getABIInfo();
CGCXXABI &getCXXABI() const { return *ABI; }
llvm::LLVMContext &getLLVMContext() { return VMContext; }
@@ -783,7 +784,7 @@ class CodeGenModule : public CodeGenTypeCache {
const TargetCodeGenInfo &getTargetCodeGenInfo();
- CodeGenTypes &getTypes() { return Types; }
+ CodeGenTypes &getTypes() { return *Types; }
CodeGenVTables &getVTables() { return VTables; }
diff --git a/clang/lib/CodeGen/CodeGenTBAA.cpp b/clang/lib/CodeGen/CodeGenTBAA.cpp
index b66b6234c9d3d4..2ce558d4bdf359 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.cpp
+++ b/clang/lib/CodeGen/CodeGenTBAA.cpp
@@ -16,6 +16,7 @@
#include "CodeGenTBAA.h"
#include "ABIInfoImpl.h"
+#include "CGCXXABI.h"
#include "CGRecordLayout.h"
#include "CodeGenTypes.h"
#include "clang/AST/ASTContext.h"
@@ -36,10 +37,10 @@ using namespace CodeGen;
CodeGenTBAA::CodeGenTBAA(ASTContext &Ctx, CodeGenTypes &CGTypes,
llvm::Module &M, const CodeGenOptions &CGO,
- const LangOptions &Features, MangleContext &MContext)
+ const LangOptions &Features)
: Context(Ctx), CGTypes(CGTypes), Module(M), CodeGenOpts(CGO),
- Features(Features), MContext(MContext), MDHelper(M.getContext()),
- Root(nullptr), Char(nullptr) {}
+ Features(Features), MDHelper(M.getContext()), Root(nullptr),
+ Char(nullptr) {}
CodeGenTBAA::~CodeGenTBAA() {
}
@@ -256,7 +257,8 @@ llvm::MDNode *CodeGenTBAA::getTypeInfoHelper(const Type *Ty) {
SmallString<256> OutName;
llvm::raw_svector_ostream Out(OutName);
- MContext.mangleCanonicalTypeName(QualType(ETy, 0), Out);
+ CGTypes.getCXXABI().getMangleContext().mangleCanonicalTypeName(
+ QualType(ETy, 0), Out);
return createScalarTypeNode(OutName, getChar(), Size);
}
@@ -481,7 +483,8 @@ llvm::MDNode *CodeGenTBAA::getBaseTypeInfoHelper(const Type *Ty) {
if (Features.CPlusPlus) {
// Don't use the mangler for C code.
llvm::raw_svector_ostream Out(OutName);
- MContext.mangleCanonicalTypeName(QualType(Ty, 0), Out);
+ CGTypes.getCXXABI().getMangleContext().mangleCanonicalTypeName(
+ QualType(Ty, 0), Out);
} else {
OutName = RD->getName();
}
diff --git a/clang/lib/CodeGen/CodeGenTBAA.h b/clang/lib/CodeGen/CodeGenTBAA.h
index 5d9ecec3ff0fe2..ba74a39a4d25ee 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.h
+++ b/clang/lib/CodeGen/CodeGenTBAA.h
@@ -24,7 +24,6 @@ namespace clang {
class ASTContext;
class CodeGenOptions;
class LangOptions;
- class MangleContext;
class QualType;
class Type;
@@ -120,7 +119,6 @@ class CodeGenTBAA {
llvm::Module &Module;
const CodeGenOptions &CodeGenOpts;
const LangOptions &Features;
- MangleContext &MContext;
// MDHelper - Helper for creating metadata.
llvm::MDBuilder MDHelper;
@@ -174,8 +172,7 @@ class CodeGenTBAA {
public:
CodeGenTBAA(ASTContext &Ctx, CodeGenTypes &CGTypes, llvm::Module &M,
- const CodeGenOptions &CGO, const LangOptions &Features,
- MangleContext &MContext);
+ const CodeGenOptions &CGO, const LangOptions &Features);
~CodeGenTBAA();
/// getTypeInfo - Get metadata used to describe accesses to objects of the
diff --git a/clang/lib/CodeGen/CodeGenTypes.cpp b/clang/lib/CodeGen/CodeGenTypes.cpp
index e0f567c5da342e..f5deccdc1ba75f 100644
--- a/clang/lib/CodeGen/CodeGenTypes.cpp
+++ b/clang/lib/CodeGen/CodeGenTypes.cpp
@@ -30,9 +30,8 @@ using namespace clang;
using namespace CodeGen;
CodeGenTypes::CodeGenTypes(CodeGenModule &cgm)
- : CGM(cgm), Context(cgm.getContext()), TheModule(cgm.getModule()),
- Target(cgm.getTarget()), TheCXXABI(cgm.getCXXABI()),
- TheABIInfo(cgm.getTargetCodeGenInfo().getABIInfo()) {
+ : CGM(cgm), Context(cgm.getContext()), TheModule(cgm.getModule()),
+ Target(cgm.getTarget()) {
SkippedLayout = false;
LongDoubleReferenced = false;
}
@@ -43,6 +42,8 @@ CodeGenTypes::~CodeGenTypes() {
delete &*I++;
}
+CGCXXABI &CodeGenTypes::getCXXABI() const { return getCGM().getCXXABI(); }
+
const CodeGenOptions &CodeGenTypes::getCodeGenOpts() const {
return CGM.getCodeGenOpts();
}
diff --git a/clang/lib/CodeGen/CodeGenTypes.h b/clang/lib/CodeGen/CodeGenTypes.h
index cbda2628e9140f..5aebf9a2122372 100644
--- a/clang/lib/CodeGen/CodeGenTypes.h
+++ b/clang/lib/CodeGen/CodeGenTypes.h
@@ -57,11 +57,6 @@ class CodeGenTypes {
ASTContext &Context;
llvm::Module &TheModule;
const TargetInfo &Target;
- CGCXXABI &TheCXXABI;
-
- // This should not be moved earlier, since its initialization depends on some
- // of the previous reference members being already initialized
- const ABIInfo &TheABIInfo;
/// The opaque type map for Objective-C interfaces. All direct
/// manipulation is done by the runtime interfaces, which are
@@ -106,9 +101,8 @@ class CodeGenTypes {
}
CodeGenModule &getCGM() const { return CGM; }
ASTContext &getContext() const { return Context; }
- const ABIInfo &getABIInfo() const { return TheABIInfo; }
const TargetInfo &getTarget() const { return Target; }
- CGCXXABI &getCXXABI() const { return TheCXXABI; }
+ CGCXXABI &getCXXABI() const;
llvm::LLVMContext &getLLVMContext() { return TheModule.getContext(); }
const CodeGenOptions &getCodeGenOpts() const;
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index cc6740edabcd3c..76d0191a7e63ad 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -1111,7 +1111,7 @@ static bool isTrivialForMSVC(const CXXRecordDecl *RD, QualType Ty,
const Type *Base = nullptr;
uint64_t NumElts = 0;
if (CGM.getTarget().getTriple().isAArch64() &&
- CGM.getTypes().getABIInfo().isHomogeneousAggregate(Ty, Base, NumElts) &&
+ CGM.getABIInfo().isHomogeneousAggregate(Ty, Base, NumElts) &&
isa<VectorType>(Base)) {
return true;
}
diff --git a/clang/test/Interpreter/assigment-with-implicit-ctor.cpp b/clang/test/Interpreter/assigment-with-implicit-ctor.cpp
new file mode 100644
index 00000000000000..24cea8ec1a4b2e
--- /dev/null
+++ b/clang/test/Interpreter/assigment-with-implicit-ctor.cpp
@@ -0,0 +1,13 @@
+// REQUIRES: host-supports-jit
+// UNSUPPORTED: system-aix
+//
+// RUN: cat %s | clang-repl | FileCheck %s
+// RUN: cat %s | clang-repl -Xcc -O2 | FileCheck %s
+
+struct box { box() = default; box(int *const data) : data{data} {} int *data{}; };
+
+box foo() { box ret; ret = new int{}; return ret; }
+
+extern "C" int printf(const char *, ...);
+printf("good");
+// CHECK: good
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