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-rw-r--r--clang/lib/CIR/CodeGen/CIRGenClass.cpp42
-rw-r--r--clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp215
-rw-r--r--clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp11
-rw-r--r--clang/lib/CIR/CodeGen/CIRGenFunction.h5
-rw-r--r--clang/lib/CIR/CodeGen/CIRGenModule.cpp13
-rw-r--r--clang/lib/CIR/CodeGen/CIRGenStmt.cpp1
6 files changed, 271 insertions, 16 deletions
diff --git a/clang/lib/CIR/CodeGen/CIRGenClass.cpp b/clang/lib/CIR/CodeGen/CIRGenClass.cpp
index cb8fe6c..9d12a13 100644
--- a/clang/lib/CIR/CodeGen/CIRGenClass.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenClass.cpp
@@ -951,28 +951,37 @@ Address CIRGenFunction::getAddressOfBaseClass(
bool nullCheckValue, SourceLocation loc) {
assert(!path.empty() && "Base path should not be empty!");
+ CastExpr::path_const_iterator start = path.begin();
+ const CXXRecordDecl *vBase = nullptr;
+
if ((*path.begin())->isVirtual()) {
- // The implementation here is actually complete, but let's flag this
- // as an error until the rest of the virtual base class support is in place.
- cgm.errorNYI(loc, "getAddrOfBaseClass: virtual base");
- return Address::invalid();
+ vBase = (*start)->getType()->castAsCXXRecordDecl();
+ ++start;
}
// Compute the static offset of the ultimate destination within its
// allocating subobject (the virtual base, if there is one, or else
// the "complete" object that we see).
- CharUnits nonVirtualOffset =
- cgm.computeNonVirtualBaseClassOffset(derived, path);
+ CharUnits nonVirtualOffset = cgm.computeNonVirtualBaseClassOffset(
+ vBase ? vBase : derived, {start, path.end()});
+
+ // If there's a virtual step, we can sometimes "devirtualize" it.
+ // For now, that's limited to when the derived type is final.
+ // TODO: "devirtualize" this for accesses to known-complete objects.
+ if (vBase && derived->hasAttr<FinalAttr>()) {
+ const ASTRecordLayout &layout = getContext().getASTRecordLayout(derived);
+ CharUnits vBaseOffset = layout.getVBaseClassOffset(vBase);
+ nonVirtualOffset += vBaseOffset;
+ vBase = nullptr; // we no longer have a virtual step
+ }
// Get the base pointer type.
mlir::Type baseValueTy = convertType((path.end()[-1])->getType());
assert(!cir::MissingFeatures::addressSpace());
- // The if statement here is redundant now, but it will be needed when we add
- // support for virtual base classes.
// If there is no virtual base, use cir.base_class_addr. It takes care of
// the adjustment and the null pointer check.
- if (nonVirtualOffset.isZero()) {
+ if (nonVirtualOffset.isZero() && !vBase) {
assert(!cir::MissingFeatures::sanitizers());
return builder.createBaseClassAddr(getLoc(loc), value, baseValueTy, 0,
/*assumeNotNull=*/true);
@@ -980,10 +989,17 @@ Address CIRGenFunction::getAddressOfBaseClass(
assert(!cir::MissingFeatures::sanitizers());
- // Apply the offset
- value = builder.createBaseClassAddr(getLoc(loc), value, baseValueTy,
- nonVirtualOffset.getQuantity(),
- /*assumeNotNull=*/true);
+ // Compute the virtual offset.
+ mlir::Value virtualOffset = nullptr;
+ if (vBase) {
+ virtualOffset = cgm.getCXXABI().getVirtualBaseClassOffset(
+ getLoc(loc), *this, value, derived, vBase);
+ }
+
+ // Apply both offsets.
+ value = applyNonVirtualAndVirtualOffset(
+ getLoc(loc), *this, value, nonVirtualOffset, virtualOffset, derived,
+ vBase, baseValueTy, not nullCheckValue);
// Cast to the destination type.
value = value.withElementType(builder, baseValueTy);
diff --git a/clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp b/clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp
index 1f7e3dd..83208bf 100644
--- a/clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenExprCXX.cpp
@@ -210,6 +210,60 @@ RValue CIRGenFunction::emitCXXMemberOrOperatorCall(
return emitCall(fnInfo, callee, returnValue, args, nullptr, loc);
}
+namespace {
+/// The parameters to pass to a usual operator delete.
+struct UsualDeleteParams {
+ TypeAwareAllocationMode typeAwareDelete = TypeAwareAllocationMode::No;
+ bool destroyingDelete = false;
+ bool size = false;
+ AlignedAllocationMode alignment = AlignedAllocationMode::No;
+};
+} // namespace
+
+// FIXME(cir): this should be shared with LLVM codegen
+static UsualDeleteParams getUsualDeleteParams(const FunctionDecl *fd) {
+ UsualDeleteParams params;
+
+ const FunctionProtoType *fpt = fd->getType()->castAs<FunctionProtoType>();
+ auto ai = fpt->param_type_begin(), ae = fpt->param_type_end();
+
+ if (fd->isTypeAwareOperatorNewOrDelete()) {
+ params.typeAwareDelete = TypeAwareAllocationMode::Yes;
+ assert(ai != ae);
+ ++ai;
+ }
+
+ // The first argument after the type-identity parameter (if any) is
+ // always a void* (or C* for a destroying operator delete for class
+ // type C).
+ ++ai;
+
+ // The next parameter may be a std::destroying_delete_t.
+ if (fd->isDestroyingOperatorDelete()) {
+ params.destroyingDelete = true;
+ assert(ai != ae);
+ ++ai;
+ }
+
+ // Figure out what other parameters we should be implicitly passing.
+ if (ai != ae && (*ai)->isIntegerType()) {
+ params.size = true;
+ ++ai;
+ } else {
+ assert(!isTypeAwareAllocation(params.typeAwareDelete));
+ }
+
+ if (ai != ae && (*ai)->isAlignValT()) {
+ params.alignment = AlignedAllocationMode::Yes;
+ ++ai;
+ } else {
+ assert(!isTypeAwareAllocation(params.typeAwareDelete));
+ }
+
+ assert(ai == ae && "unexpected usual deallocation function parameter");
+ return params;
+}
+
static mlir::Value emitCXXNewAllocSize(CIRGenFunction &cgf, const CXXNewExpr *e,
unsigned minElements,
mlir::Value &numElements,
@@ -332,6 +386,117 @@ static RValue emitNewDeleteCall(CIRGenFunction &cgf,
return rv;
}
+namespace {
+/// Calls the given 'operator delete' on a single object.
+struct CallObjectDelete final : EHScopeStack::Cleanup {
+ mlir::Value ptr;
+ const FunctionDecl *operatorDelete;
+ QualType elementType;
+
+ CallObjectDelete(mlir::Value ptr, const FunctionDecl *operatorDelete,
+ QualType elementType)
+ : ptr(ptr), operatorDelete(operatorDelete), elementType(elementType) {}
+
+ void emit(CIRGenFunction &cgf) override {
+ cgf.emitDeleteCall(operatorDelete, ptr, elementType);
+ }
+
+ // This is a placeholder until EHCleanupScope is implemented.
+ size_t getSize() const override {
+ assert(!cir::MissingFeatures::ehCleanupScope());
+ return sizeof(CallObjectDelete);
+ }
+};
+} // namespace
+
+/// Emit the code for deleting a single object.
+static void emitObjectDelete(CIRGenFunction &cgf, const CXXDeleteExpr *de,
+ Address ptr, QualType elementType) {
+ // C++11 [expr.delete]p3:
+ // If the static type of the object to be deleted is different from its
+ // dynamic type, the static type shall be a base class of the dynamic type
+ // of the object to be deleted and the static type shall have a virtual
+ // destructor or the behavior is undefined.
+ assert(!cir::MissingFeatures::emitTypeCheck());
+
+ const FunctionDecl *operatorDelete = de->getOperatorDelete();
+ assert(!operatorDelete->isDestroyingOperatorDelete());
+
+ // Find the destructor for the type, if applicable. If the
+ // destructor is virtual, we'll just emit the vcall and return.
+ const CXXDestructorDecl *dtor = nullptr;
+ if (const auto *rd = elementType->getAsCXXRecordDecl()) {
+ if (rd->hasDefinition() && !rd->hasTrivialDestructor()) {
+ dtor = rd->getDestructor();
+
+ if (dtor->isVirtual()) {
+ cgf.cgm.errorNYI(de->getSourceRange(),
+ "emitObjectDelete: virtual destructor");
+ }
+ }
+ }
+
+ // Make sure that we call delete even if the dtor throws.
+ // This doesn't have to a conditional cleanup because we're going
+ // to pop it off in a second.
+ cgf.ehStack.pushCleanup<CallObjectDelete>(
+ NormalAndEHCleanup, ptr.getPointer(), operatorDelete, elementType);
+
+ if (dtor) {
+ cgf.emitCXXDestructorCall(dtor, Dtor_Complete,
+ /*ForVirtualBase=*/false,
+ /*Delegating=*/false, ptr, elementType);
+ } else if (elementType.getObjCLifetime()) {
+ assert(!cir::MissingFeatures::objCLifetime());
+ cgf.cgm.errorNYI(de->getSourceRange(), "emitObjectDelete: ObjCLifetime");
+ }
+
+ // In traditional LLVM codegen null checks are emitted to save a delete call.
+ // In CIR we optimize for size by default, the null check should be added into
+ // this function callers.
+ assert(!cir::MissingFeatures::emitNullCheckForDeleteCalls());
+
+ cgf.popCleanupBlock();
+}
+
+void CIRGenFunction::emitCXXDeleteExpr(const CXXDeleteExpr *e) {
+ const Expr *arg = e->getArgument();
+ Address ptr = emitPointerWithAlignment(arg);
+
+ // Null check the pointer.
+ //
+ // We could avoid this null check if we can determine that the object
+ // destruction is trivial and doesn't require an array cookie; we can
+ // unconditionally perform the operator delete call in that case. For now, we
+ // assume that deleted pointers are null rarely enough that it's better to
+ // keep the branch. This might be worth revisiting for a -O0 code size win.
+ //
+ // CIR note: emit the code size friendly by default for now, such as mentioned
+ // in `emitObjectDelete`.
+ assert(!cir::MissingFeatures::emitNullCheckForDeleteCalls());
+ QualType deleteTy = e->getDestroyedType();
+
+ // A destroying operator delete overrides the entire operation of the
+ // delete expression.
+ if (e->getOperatorDelete()->isDestroyingOperatorDelete()) {
+ cgm.errorNYI(e->getSourceRange(),
+ "emitCXXDeleteExpr: destroying operator delete");
+ return;
+ }
+
+ // We might be deleting a pointer to array.
+ deleteTy = getContext().getBaseElementType(deleteTy);
+ ptr = ptr.withElementType(builder, convertTypeForMem(deleteTy));
+
+ if (e->isArrayForm()) {
+ assert(!cir::MissingFeatures::deleteArray());
+ cgm.errorNYI(e->getSourceRange(), "emitCXXDeleteExpr: array delete");
+ return;
+ } else {
+ emitObjectDelete(*this, e, ptr, deleteTy);
+ }
+}
+
mlir::Value CIRGenFunction::emitCXXNewExpr(const CXXNewExpr *e) {
// The element type being allocated.
QualType allocType = getContext().getBaseElementType(e->getAllocatedType());
@@ -443,3 +608,53 @@ mlir::Value CIRGenFunction::emitCXXNewExpr(const CXXNewExpr *e) {
allocSizeWithoutCookie);
return result.getPointer();
}
+
+void CIRGenFunction::emitDeleteCall(const FunctionDecl *deleteFD,
+ mlir::Value ptr, QualType deleteTy) {
+ assert(!cir::MissingFeatures::deleteArray());
+
+ const auto *deleteFTy = deleteFD->getType()->castAs<FunctionProtoType>();
+ CallArgList deleteArgs;
+
+ UsualDeleteParams params = getUsualDeleteParams(deleteFD);
+ auto paramTypeIt = deleteFTy->param_type_begin();
+
+ // Pass std::type_identity tag if present
+ if (isTypeAwareAllocation(params.typeAwareDelete))
+ cgm.errorNYI(deleteFD->getSourceRange(),
+ "emitDeleteCall: type aware delete");
+
+ // Pass the pointer itself.
+ QualType argTy = *paramTypeIt++;
+ mlir::Value deletePtr =
+ builder.createBitcast(ptr.getLoc(), ptr, convertType(argTy));
+ deleteArgs.add(RValue::get(deletePtr), argTy);
+
+ // Pass the std::destroying_delete tag if present.
+ if (params.destroyingDelete)
+ cgm.errorNYI(deleteFD->getSourceRange(),
+ "emitDeleteCall: destroying delete");
+
+ // Pass the size if the delete function has a size_t parameter.
+ if (params.size) {
+ QualType sizeType = *paramTypeIt++;
+ CharUnits deleteTypeSize = getContext().getTypeSizeInChars(deleteTy);
+ assert(mlir::isa<cir::IntType>(convertType(sizeType)) &&
+ "expected cir::IntType");
+ cir::ConstantOp size = builder.getConstInt(
+ *currSrcLoc, convertType(sizeType), deleteTypeSize.getQuantity());
+
+ deleteArgs.add(RValue::get(size), sizeType);
+ }
+
+ // Pass the alignment if the delete function has an align_val_t parameter.
+ if (isAlignedAllocation(params.alignment))
+ cgm.errorNYI(deleteFD->getSourceRange(),
+ "emitDeleteCall: aligned allocation");
+
+ assert(paramTypeIt == deleteFTy->param_type_end() &&
+ "unknown parameter to usual delete function");
+
+ // Emit the call to delete.
+ emitNewDeleteCall(*this, deleteFD, deleteFTy, deleteArgs);
+}
diff --git a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
index bd09d78..f4bbced 100644
--- a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
@@ -676,6 +676,10 @@ public:
mlir::Value VisitRealImag(const UnaryOperator *e,
QualType promotionType = QualType());
+ mlir::Value VisitUnaryExtension(const UnaryOperator *e) {
+ return Visit(e->getSubExpr());
+ }
+
mlir::Value VisitCXXDefaultInitExpr(CXXDefaultInitExpr *die) {
CIRGenFunction::CXXDefaultInitExprScope scope(cgf, die);
return Visit(die->getExpr());
@@ -687,6 +691,10 @@ public:
mlir::Value VisitCXXNewExpr(const CXXNewExpr *e) {
return cgf.emitCXXNewExpr(e);
}
+ mlir::Value VisitCXXDeleteExpr(const CXXDeleteExpr *e) {
+ cgf.emitCXXDeleteExpr(e);
+ return {};
+ }
mlir::Value VisitCXXThrowExpr(const CXXThrowExpr *e) {
cgf.emitCXXThrowExpr(e);
@@ -1274,9 +1282,6 @@ mlir::Value ScalarExprEmitter::emitPromoted(const Expr *e,
} else if (const auto *uo = dyn_cast<UnaryOperator>(e)) {
switch (uo->getOpcode()) {
case UO_Imag:
- cgf.cgm.errorNYI(e->getSourceRange(),
- "ScalarExprEmitter::emitPromoted unary imag");
- return {};
case UO_Real:
return VisitRealImag(uo, promotionType);
case UO_Minus:
diff --git a/clang/lib/CIR/CodeGen/CIRGenFunction.h b/clang/lib/CIR/CodeGen/CIRGenFunction.h
index 166435f..ef07db3 100644
--- a/clang/lib/CIR/CodeGen/CIRGenFunction.h
+++ b/clang/lib/CIR/CodeGen/CIRGenFunction.h
@@ -1197,6 +1197,8 @@ public:
bool delegating, Address thisAddr,
CallArgList &args, clang::SourceLocation loc);
+ void emitCXXDeleteExpr(const CXXDeleteExpr *e);
+
void emitCXXDestructorCall(const CXXDestructorDecl *dd, CXXDtorType type,
bool forVirtualBase, bool delegating,
Address thisAddr, QualType thisTy);
@@ -1244,6 +1246,9 @@ public:
void emitDelegatingCXXConstructorCall(const CXXConstructorDecl *ctor,
const FunctionArgList &args);
+ void emitDeleteCall(const FunctionDecl *deleteFD, mlir::Value ptr,
+ QualType deleteTy);
+
mlir::LogicalResult emitDoStmt(const clang::DoStmt &s);
/// Emit an expression as an initializer for an object (variable, field, etc.)
diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.cpp b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
index eef23a0..c977ff9 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
@@ -119,6 +119,19 @@ CIRGenModule::CIRGenModule(mlir::MLIRContext &mlirContext,
cir::OptInfoAttr::get(&mlirContext,
cgo.OptimizationLevel,
cgo.OptimizeSize));
+ // Set the module name to be the name of the main file. TranslationUnitDecl
+ // often contains invalid source locations and isn't a reliable source for the
+ // module location.
+ FileID mainFileId = astContext.getSourceManager().getMainFileID();
+ const FileEntry &mainFile =
+ *astContext.getSourceManager().getFileEntryForID(mainFileId);
+ StringRef path = mainFile.tryGetRealPathName();
+ if (!path.empty()) {
+ theModule.setSymName(path);
+ theModule->setLoc(mlir::FileLineColLoc::get(&mlirContext, path,
+ /*line=*/0,
+ /*column=*/0));
+ }
}
CIRGenModule::~CIRGenModule() = default;
diff --git a/clang/lib/CIR/CodeGen/CIRGenStmt.cpp b/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
index e842892..644c383 100644
--- a/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
@@ -216,6 +216,7 @@ mlir::LogicalResult CIRGenFunction::emitStmt(const Stmt *s,
case Stmt::OMPSimdDirectiveClass:
case Stmt::OMPTileDirectiveClass:
case Stmt::OMPUnrollDirectiveClass:
+ case Stmt::OMPFuseDirectiveClass:
case Stmt::OMPForDirectiveClass:
case Stmt::OMPForSimdDirectiveClass:
case Stmt::OMPSectionsDirectiveClass:
generated by cgit v1.1 at 2025-09-30 07:04:05 +0000