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@@ -0,0 +1,855 @@
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+//===--- CGNonTrivialStruct.cpp - Emit Special Functions for C Structs ----===//
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+//
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+// The LLVM Compiler Infrastructure
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+//
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+// This file is distributed under the University of Illinois Open Source
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+// License. See LICENSE.TXT for details.
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+//
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+//===----------------------------------------------------------------------===//
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+//
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+// This file defines functions to generate various special functions for C
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+// structs.
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+//
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+//===----------------------------------------------------------------------===//
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+
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+#include "CodeGenFunction.h"
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+#include "CodeGenModule.h"
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+#include "llvm/Support/ScopedPrinter.h"
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+#include <array>
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+
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+using namespace clang;
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+using namespace CodeGen;
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+
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+// Return the size of a field in number of bits.
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+static uint64_t getFieldSize(const FieldDecl *FD, ASTContext &Ctx) {
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+ if (FD->isBitField())
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+ return FD->getBitWidthValue(Ctx);
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+ return Ctx.getTypeSize(FD->getType());
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+}
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+
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+namespace {
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+enum { DstIdx = 0, SrcIdx = 1 };
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+const char *ValNameStr[2] = {"dst", "src"};
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+
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+template <class Derived, class RetTy = void> struct DestructedTypeVisitor {
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+ template <class... Ts> RetTy visit(QualType FT, Ts &&... Args) {
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+ return asDerived().visit(FT.isDestructedType(), FT,
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+ std::forward<Ts>(Args)...);
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+ }
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+
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+ template <class... Ts>
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+ RetTy visit(QualType::DestructionKind DK, QualType FT, Ts &&... Args) {
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+ if (asDerived().getContext().getAsArrayType(FT))
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+ return asDerived().visitArray(DK, FT, std::forward<Ts>(Args)...);
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+
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+ switch (DK) {
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+ case QualType::DK_objc_strong_lifetime:
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+ return asDerived().visitARCStrong(FT, std::forward<Ts>(Args)...);
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+ case QualType::DK_nontrivial_c_struct:
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+ return asDerived().visitStruct(FT, std::forward<Ts>(Args)...);
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+ case QualType::DK_none:
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+ return asDerived().visitTrivial(FT, std::forward<Ts>(Args)...);
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+ case QualType::DK_cxx_destructor:
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+ return asDerived().visitCXXDestructor(FT, std::forward<Ts>(Args)...);
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+ case QualType::DK_objc_weak_lifetime:
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+ return asDerived().visitARCWeak(FT, std::forward<Ts>(Args)...);
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+ }
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+
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+ llvm_unreachable("unknown destruction kind");
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+ }
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+
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+ Derived &asDerived() { return static_cast<Derived &>(*this); }
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+};
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+
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+template <class Derived, class RetTy = void>
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+struct DefaultInitializedTypeVisitor {
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+ template <class... Ts> RetTy visit(QualType FT, Ts &&... Args) {
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+ return asDerived().visit(FT.isNonTrivialToPrimitiveDefaultInitialize(), FT,
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+ std::forward<Ts>(Args)...);
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+ }
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+
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+ template <class... Ts>
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+ RetTy visit(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT,
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+ Ts &&... Args) {
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+ if (asDerived().getContext().getAsArrayType(FT))
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+ return asDerived().visitArray(PDIK, FT, std::forward<Ts>(Args)...);
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+
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+ switch (PDIK) {
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+ case QualType::PDIK_ARCStrong:
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+ return asDerived().visitARCStrong(FT, std::forward<Ts>(Args)...);
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+ case QualType::PDIK_Struct:
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+ return asDerived().visitStruct(FT, std::forward<Ts>(Args)...);
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+ case QualType::PDIK_Trivial:
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+ return asDerived().visitTrivial(FT, std::forward<Ts>(Args)...);
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+ }
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+
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+ llvm_unreachable("unknown default-initialize kind");
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+ }
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+
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+ Derived &asDerived() { return static_cast<Derived &>(*this); }
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+};
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+
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+template <class Derived, bool IsMove, class RetTy = void>
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+struct CopiedTypeVisitor {
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+ template <class... Ts> RetTy visit(QualType FT, Ts &&... Args) {
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+ QualType::PrimitiveCopyKind PCK =
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+ IsMove ? FT.isNonTrivialToPrimitiveDestructiveMove()
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+ : FT.isNonTrivialToPrimitiveCopy();
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+ return asDerived().visit(PCK, FT, std::forward<Ts>(Args)...);
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+ }
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+
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+ template <class... Ts>
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+ RetTy visit(QualType::PrimitiveCopyKind PCK, QualType FT, Ts &&... Args) {
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+ asDerived().preVisit(PCK, FT, std::forward<Ts>(Args)...);
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+
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+ if (asDerived().getContext().getAsArrayType(FT))
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+ return asDerived().visitArray(PCK, FT, std::forward<Ts>(Args)...);
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+
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+ switch (PCK) {
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+ case QualType::PCK_ARCStrong:
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+ return asDerived().visitARCStrong(FT, std::forward<Ts>(Args)...);
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+ case QualType::PCK_Struct:
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+ return asDerived().visitStruct(FT, std::forward<Ts>(Args)...);
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+ case QualType::PCK_Trivial:
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+ return asDerived().visitTrivial(FT, std::forward<Ts>(Args)...);
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+ case QualType::PCK_VolatileTrivial:
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+ return asDerived().visitVolatileTrivial(FT, std::forward<Ts>(Args)...);
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+ }
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+
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+ llvm_unreachable("unknown primitive copy kind");
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+ }
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+
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+ Derived &asDerived() { return static_cast<Derived &>(*this); }
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+};
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+
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+template <class Derived> struct StructVisitor {
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+ StructVisitor(ASTContext &Ctx) : Ctx(Ctx) {}
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+
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+ template <class... Ts>
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+ void visitStructFields(QualType QT, CharUnits CurStructOffset, Ts... Args) {
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+ const RecordDecl *RD = QT->castAs<RecordType>()->getDecl();
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+
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+ // Iterate over the fields of the struct.
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+ for (const FieldDecl *FD : RD->fields()) {
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+ QualType FT = FD->getType();
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+ FT = QT.isVolatileQualified() ? FT.withVolatile() : FT;
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+ asDerived().visit(FT, FD, CurStructOffset, Args...);
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+ }
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+
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+ asDerived().flushTrivialFields(Args...);
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+ }
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+
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+ template <class... Ts> void visitTrivial(Ts... Args) {}
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+
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+ template <class... Ts> void visitARCWeak(Ts... Args) {
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+ // FIXME: remove this when visitARCWeak is implemented in the subclasses.
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+ llvm_unreachable("weak field is not expected");
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+ }
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+
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+ template <class... Ts> void visitCXXDestructor(Ts... Args) {
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+ llvm_unreachable("field of a C++ struct type is not expected");
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+ }
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+
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+ template <class... Ts> void flushTrivialFields(Ts... Args) {}
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+
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+ uint64_t getFieldOffsetInBits(const FieldDecl *FD) {
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+ return FD ? Ctx.getASTRecordLayout(FD->getParent())
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+ .getFieldOffset(FD->getFieldIndex())
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+ : 0;
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+ }
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+
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+ CharUnits getFieldOffset(const FieldDecl *FD) {
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+ return Ctx.toCharUnitsFromBits(getFieldOffsetInBits(FD));
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+ }
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+
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+ Derived &asDerived() { return static_cast<Derived &>(*this); }
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+
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+ ASTContext &getContext() { return Ctx; }
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+ ASTContext &Ctx;
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+};
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+
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+template <class Derived, bool IsMove>
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+struct CopyStructVisitor : StructVisitor<Derived>,
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+ CopiedTypeVisitor<Derived, IsMove> {
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+ using StructVisitor<Derived>::asDerived;
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+
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+ CopyStructVisitor(ASTContext &Ctx) : StructVisitor<Derived>(Ctx) {}
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+
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+ template <class... Ts>
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+ void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT,
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+ const FieldDecl *FD, CharUnits CurStructOffsset,
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+ Ts &&... Args) {
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+ if (PCK)
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+ asDerived().flushTrivialFields(std::forward<Ts>(Args)...);
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+ }
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+
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+ template <class... Ts>
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+ void visitTrivial(QualType FT, const FieldDecl *FD, CharUnits CurStructOffset,
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+ Ts... Args) {
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+ assert(!FT.isVolatileQualified() && "volatile field not expected");
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+ ASTContext &Ctx = asDerived().getContext();
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+ uint64_t FieldSize = getFieldSize(FD, Ctx);
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+
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+ // Ignore zero-sized fields.
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+ if (FieldSize == 0)
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+ return;
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+
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+ uint64_t FStartInBits = asDerived().getFieldOffsetInBits(FD);
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+ uint64_t FEndInBits = FStartInBits + FieldSize;
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+ uint64_t RoundedFEnd = llvm::alignTo(FEndInBits, Ctx.getCharWidth());
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+
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+ // Set Start if this is the first field of a sequence of trivial fields.
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+ if (Start == End)
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+ Start = CurStructOffset + Ctx.toCharUnitsFromBits(FStartInBits);
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+ End = CurStructOffset + Ctx.toCharUnitsFromBits(RoundedFEnd);
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+ }
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+
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+ CharUnits Start = CharUnits::Zero(), End = CharUnits::Zero();
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+};
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+
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+// This function creates the mangled name of a special function of a non-trivial
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+// C struct. Since there is no ODR in C, the function is mangled based on the
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+// struct contents and not the name. The mangled name has the following
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+// structure:
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+//
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+// <function-name> ::= <prefix> <alignment-info> "_" <struct-field-info>
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+// <prefix> ::= "__destructor_" | "__default_constructor_" |
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+// "__copy_constructor_" | "__move_constructor_" |
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+// "__copy_assignment_" | "__move_assignment_"
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+// <alignment-info> ::= <dst-alignment> ["_" <src-alignment>]
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+// <struct-field-info> ::= <field-info>+
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+// <field-info> ::= <struct-or-scalar-field-info> | <array-field-info>
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+// <struct-or-scalar-field-info> ::= <struct-field-info> | <strong-field-info> |
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+// <trivial-field-info>
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+// <array-field-info> ::= "_AB" <array-offset> "s" <element-size> "n"
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+// <num-elements> <innermost-element-info> "_AE"
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+// <innermost-element-info> ::= <struct-or-scalar-field-info>
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+// <strong-field-info> ::= "_s" ["b"] ["v"] <field-offset>
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+// <trivial-field-info> ::= "_t" ["v"] <field-offset> "_" <field-size>
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+
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+template <class Derived> struct GenFuncNameBase {
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+ std::string getVolatileOffsetStr(bool IsVolatile, CharUnits Offset) {
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+ std::string S;
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+ if (IsVolatile)
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+ S = "v";
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+ S += llvm::to_string(Offset.getQuantity());
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+ return S;
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+ }
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+
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+ void visitARCStrong(QualType FT, const FieldDecl *FD,
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+ CharUnits CurStructOffset) {
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+ appendStr("_s");
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+ if (FT->isBlockPointerType())
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+ appendStr("b");
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+ CharUnits FieldOffset = CurStructOffset + asDerived().getFieldOffset(FD);
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+ appendStr(getVolatileOffsetStr(FT.isVolatileQualified(), FieldOffset));
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+ }
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+
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+ void visitStruct(QualType QT, const FieldDecl *FD,
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+ CharUnits CurStructOffset) {
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+ CharUnits FieldOffset = CurStructOffset + asDerived().getFieldOffset(FD);
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+ asDerived().visitStructFields(QT, FieldOffset);
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+ }
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+
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+ template <class FieldKind>
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+ void visitArray(FieldKind FK, QualType QT, const FieldDecl *FD,
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+ CharUnits CurStructOffset) {
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+ // String for non-volatile trivial fields is emitted when
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+ // flushTrivialFields is called.
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+ if (!FK)
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+ return asDerived().visitTrivial(QT, FD, CurStructOffset);
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+
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+ CharUnits FieldOffset = CurStructOffset + asDerived().getFieldOffset(FD);
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+ ASTContext &Ctx = asDerived().getContext();
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+ const auto *AT = Ctx.getAsConstantArrayType(QT);
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+ unsigned NumElts = Ctx.getConstantArrayElementCount(AT);
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+ QualType EltTy = Ctx.getBaseElementType(AT);
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+ CharUnits EltSize = Ctx.getTypeSizeInChars(EltTy);
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+ appendStr("_AB" + llvm::to_string(FieldOffset.getQuantity()) + "s" +
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+ llvm::to_string(EltSize.getQuantity()) + "n" +
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+ llvm::to_string(NumElts));
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+ EltTy = QT.isVolatileQualified() ? EltTy.withVolatile() : EltTy;
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+ asDerived().visit(FK, EltTy, nullptr, FieldOffset);
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+ appendStr("_AE");
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+ }
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+
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+ void appendStr(StringRef Str) { Name += Str; }
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+
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+ std::string getName(QualType QT, bool IsVolatile) {
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+ QT = IsVolatile ? QT.withVolatile() : QT;
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+ asDerived().visitStructFields(QT, CharUnits::Zero());
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+ return Name;
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+ }
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+
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+ Derived &asDerived() { return static_cast<Derived &>(*this); }
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+
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+ std::string Name;
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+};
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+
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+template <class Derived>
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+struct GenUnaryFuncName : StructVisitor<Derived>, GenFuncNameBase<Derived> {
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+ GenUnaryFuncName(StringRef Prefix, CharUnits DstAlignment, ASTContext &Ctx)
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+ : StructVisitor<Derived>(Ctx) {
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+ this->appendStr(Prefix);
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+ this->appendStr(llvm::to_string(DstAlignment.getQuantity()));
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+ }
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+};
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+
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+// Helper function to create a null constant.
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+static llvm::Constant *getNullForVariable(Address Addr) {
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+ llvm::Type *Ty = Addr.getElementType();
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+ return llvm::ConstantPointerNull::get(cast<llvm::PointerType>(Ty));
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+}
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+
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+template <bool IsMove>
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+struct GenBinaryFuncName : CopyStructVisitor<GenBinaryFuncName<IsMove>, IsMove>,
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+ GenFuncNameBase<GenBinaryFuncName<IsMove>> {
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+
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+ GenBinaryFuncName(StringRef Prefix, CharUnits DstAlignment,
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+ CharUnits SrcAlignment, ASTContext &Ctx)
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+ : CopyStructVisitor<GenBinaryFuncName<IsMove>, IsMove>(Ctx) {
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+ this->appendStr(Prefix);
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+ this->appendStr(llvm::to_string(DstAlignment.getQuantity()));
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+ this->appendStr("_" + llvm::to_string(SrcAlignment.getQuantity()));
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+ }
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+
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+ void flushTrivialFields() {
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+ if (this->Start == this->End)
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+ return;
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+
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+ this->appendStr("_t" + llvm::to_string(this->Start.getQuantity()) + "w" +
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+ llvm::to_string((this->End - this->Start).getQuantity()));
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+
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+ this->Start = this->End = CharUnits::Zero();
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+ }
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+
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+ void visitVolatileTrivial(QualType FT, const FieldDecl *FD,
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+ CharUnits CurStackOffset) {
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+ // Because volatile fields can be bit-fields and are individually copied,
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+ // their offset and width are in bits.
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+ uint64_t OffsetInBits =
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+ this->Ctx.toBits(CurStackOffset) + this->getFieldOffsetInBits(FD);
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+ this->appendStr("_tv" + llvm::to_string(OffsetInBits) + "w" +
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+ llvm::to_string(getFieldSize(FD, this->Ctx)));
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+ }
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+};
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+
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+struct GenDefaultInitializeFuncName
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+ : GenUnaryFuncName<GenDefaultInitializeFuncName>,
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+ DefaultInitializedTypeVisitor<GenDefaultInitializeFuncName> {
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+ GenDefaultInitializeFuncName(CharUnits DstAlignment, ASTContext &Ctx)
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+ : GenUnaryFuncName<GenDefaultInitializeFuncName>("__default_constructor_",
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+ DstAlignment, Ctx) {}
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+};
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+
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+struct GenDestructorFuncName : GenUnaryFuncName<GenDestructorFuncName>,
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+ DestructedTypeVisitor<GenDestructorFuncName> {
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+ GenDestructorFuncName(CharUnits DstAlignment, ASTContext &Ctx)
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+ : GenUnaryFuncName<GenDestructorFuncName>("__destructor_", DstAlignment,
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+ Ctx) {}
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+};
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+
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+// Helper function that creates CGFunctionInfo for an N-ary special function.
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+template <size_t N>
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+static const CGFunctionInfo &getFunctionInfo(CodeGenModule &CGM,
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+ FunctionArgList &Args) {
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+ ASTContext &Ctx = CGM.getContext();
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+ llvm::SmallVector<ImplicitParamDecl *, N> Params;
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+ QualType ParamTy = Ctx.getPointerType(Ctx.VoidPtrTy);
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+
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+ for (unsigned I = 0; I < N; ++I)
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+ Params.push_back(ImplicitParamDecl::Create(
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+ Ctx, nullptr, SourceLocation(), &Ctx.Idents.get(ValNameStr[I]), ParamTy,
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+ ImplicitParamDecl::Other));
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+
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+ for (auto &P : Params)
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+ Args.push_back(P);
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+
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+ return CGM.getTypes().arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, Args);
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+}
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+
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+// Template classes that are used as bases for classes that emit special
|
|
|
+// functions.
|
|
|
+template <class Derived> struct GenFuncBase {
|
|
|
+ template <size_t N>
|
|
|
+ void visitStruct(QualType FT, const FieldDecl *FD, CharUnits CurStackOffset,
|
|
|
+ std::array<Address, N> Addrs) {
|
|
|
+ this->asDerived().callSpecialFunction(
|
|
|
+ FT, CurStackOffset + asDerived().getFieldOffset(FD), Addrs);
|
|
|
+ }
|
|
|
+
|
|
|
+ template <class FieldKind, size_t N>
|
|
|
+ void visitArray(FieldKind FK, QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, N> Addrs) {
|
|
|
+ // Non-volatile trivial fields are copied when flushTrivialFields is called.
|
|
|
+ if (!FK)
|
|
|
+ return asDerived().visitTrivial(QT, FD, CurStackOffset, Addrs);
|
|
|
+
|
|
|
+ CodeGenFunction &CGF = *this->CGF;
|
|
|
+ ASTContext &Ctx = CGF.getContext();
|
|
|
+
|
|
|
+ // Compute the end address.
|
|
|
+ QualType BaseEltQT;
|
|
|
+ std::array<Address, N> StartAddrs = Addrs;
|
|
|
+ for (unsigned I = 0; I < N; ++I)
|
|
|
+ StartAddrs[I] = getAddrWithOffset(Addrs[I], CurStackOffset, FD);
|
|
|
+ Address DstAddr = StartAddrs[DstIdx];
|
|
|
+ llvm::Value *NumElts =
|
|
|
+ CGF.emitArrayLength(Ctx.getAsArrayType(QT), BaseEltQT, DstAddr);
|
|
|
+ unsigned BaseEltSize = Ctx.getTypeSizeInChars(BaseEltQT).getQuantity();
|
|
|
+ llvm::Value *BaseEltSizeVal =
|
|
|
+ llvm::ConstantInt::get(NumElts->getType(), BaseEltSize);
|
|
|
+ llvm::Value *SizeInBytes =
|
|
|
+ CGF.Builder.CreateNUWMul(BaseEltSizeVal, NumElts);
|
|
|
+ Address BC = CGF.Builder.CreateBitCast(DstAddr, CGF.CGM.Int8PtrTy);
|
|
|
+ llvm::Value *DstArrayEnd =
|
|
|
+ CGF.Builder.CreateInBoundsGEP(BC.getPointer(), SizeInBytes);
|
|
|
+ DstArrayEnd = CGF.Builder.CreateBitCast(DstArrayEnd, CGF.CGM.Int8PtrPtrTy,
|
|
|
+ "dstarray.end");
|
|
|
+ llvm::BasicBlock *PreheaderBB = CGF.Builder.GetInsertBlock();
|
|
|
+
|
|
|
+ // Create the header block and insert the phi instructions.
|
|
|
+ llvm::BasicBlock *HeaderBB = CGF.createBasicBlock("loop.header");
|
|
|
+ CGF.EmitBlock(HeaderBB);
|
|
|
+ llvm::PHINode *PHIs[N];
|
|
|
+
|
|
|
+ for (unsigned I = 0; I < N; ++I) {
|
|
|
+ PHIs[I] = CGF.Builder.CreatePHI(CGF.CGM.Int8PtrPtrTy, 2, "addr.cur");
|
|
|
+ PHIs[I]->addIncoming(StartAddrs[I].getPointer(), PreheaderBB);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create the exit and loop body blocks.
|
|
|
+ llvm::BasicBlock *ExitBB = CGF.createBasicBlock("loop.exit");
|
|
|
+ llvm::BasicBlock *LoopBB = CGF.createBasicBlock("loop.body");
|
|
|
+
|
|
|
+ // Emit the comparison and conditional branch instruction that jumps to
|
|
|
+ // either the exit or the loop body.
|
|
|
+ llvm::Value *Done =
|
|
|
+ CGF.Builder.CreateICmpEQ(PHIs[DstIdx], DstArrayEnd, "done");
|
|
|
+ CGF.Builder.CreateCondBr(Done, ExitBB, LoopBB);
|
|
|
+
|
|
|
+ // Visit the element of the array in the loop body.
|
|
|
+ CGF.EmitBlock(LoopBB);
|
|
|
+ QualType EltQT = Ctx.getAsArrayType(QT)->getElementType();
|
|
|
+ CharUnits EltSize = Ctx.getTypeSizeInChars(EltQT);
|
|
|
+ std::array<Address, N> NewAddrs = Addrs;
|
|
|
+
|
|
|
+ for (unsigned I = 0; I < N; ++I)
|
|
|
+ NewAddrs[I] = Address(
|
|
|
+ PHIs[I], StartAddrs[I].getAlignment().alignmentAtOffset(EltSize));
|
|
|
+
|
|
|
+ EltQT = QT.isVolatileQualified() ? EltQT.withVolatile() : EltQT;
|
|
|
+ this->asDerived().visit(EltQT, nullptr, CharUnits::Zero(), NewAddrs);
|
|
|
+
|
|
|
+ LoopBB = CGF.Builder.GetInsertBlock();
|
|
|
+
|
|
|
+ for (unsigned I = 0; I < N; ++I) {
|
|
|
+ // Instrs to update the destination and source addresses.
|
|
|
+ // Update phi instructions.
|
|
|
+ NewAddrs[I] = getAddrWithOffset(NewAddrs[I], EltSize);
|
|
|
+ PHIs[I]->addIncoming(NewAddrs[I].getPointer(), LoopBB);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Insert an unconditional branch to the header block.
|
|
|
+ CGF.Builder.CreateBr(HeaderBB);
|
|
|
+ CGF.EmitBlock(ExitBB);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// Return an address with the specified offset from the passed address.
|
|
|
+ Address getAddrWithOffset(Address Addr, CharUnits Offset) {
|
|
|
+ assert(Addr.isValid() && "invalid address");
|
|
|
+ if (Offset.getQuantity() == 0)
|
|
|
+ return Addr;
|
|
|
+ Addr = CGF->Builder.CreateBitCast(Addr, CGF->CGM.Int8PtrTy);
|
|
|
+ Addr = CGF->Builder.CreateConstInBoundsGEP(Addr, Offset.getQuantity(),
|
|
|
+ CharUnits::One());
|
|
|
+ return CGF->Builder.CreateBitCast(Addr, CGF->CGM.Int8PtrPtrTy);
|
|
|
+ }
|
|
|
+
|
|
|
+ Address getAddrWithOffset(Address Addr, CharUnits StructFieldOffset,
|
|
|
+ const FieldDecl *FD) {
|
|
|
+ return getAddrWithOffset(Addr, StructFieldOffset +
|
|
|
+ asDerived().getFieldOffset(FD));
|
|
|
+ }
|
|
|
+
|
|
|
+ template <size_t N>
|
|
|
+ llvm::Function *
|
|
|
+ getFunction(StringRef FuncName, QualType QT, std::array<Address, N> Addrs,
|
|
|
+ std::array<CharUnits, N> Alignments, CodeGenModule &CGM) {
|
|
|
+ // If the special function already exists in the module, return it.
|
|
|
+ if (llvm::Function *F = CGM.getModule().getFunction(FuncName)) {
|
|
|
+ bool WrongType = false;
|
|
|
+ if (!F->getReturnType()->isVoidTy())
|
|
|
+ WrongType = true;
|
|
|
+ else {
|
|
|
+ for (const llvm::Argument &Arg : F->args())
|
|
|
+ if (Arg.getType() != CGM.Int8PtrPtrTy)
|
|
|
+ WrongType = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (WrongType) {
|
|
|
+ std::string FuncName = F->getName();
|
|
|
+ SourceLocation Loc = QT->castAs<RecordType>()->getDecl()->getLocation();
|
|
|
+ CGM.Error(Loc, "special function " + FuncName +
|
|
|
+ " for non-trivial C struct has incorrect type");
|
|
|
+ return nullptr;
|
|
|
+ }
|
|
|
+ return F;
|
|
|
+ }
|
|
|
+
|
|
|
+ ASTContext &Ctx = CGM.getContext();
|
|
|
+ FunctionArgList Args;
|
|
|
+ const CGFunctionInfo &FI = getFunctionInfo<N>(CGM, Args);
|
|
|
+ llvm::FunctionType *FuncTy = CGM.getTypes().GetFunctionType(FI);
|
|
|
+ llvm::Function *F =
|
|
|
+ llvm::Function::Create(FuncTy, llvm::GlobalValue::LinkOnceODRLinkage,
|
|
|
+ FuncName, &CGM.getModule());
|
|
|
+ F->setVisibility(llvm::GlobalValue::HiddenVisibility);
|
|
|
+ CGM.SetLLVMFunctionAttributes(nullptr, FI, F);
|
|
|
+ CGM.SetLLVMFunctionAttributesForDefinition(nullptr, F);
|
|
|
+ IdentifierInfo *II = &Ctx.Idents.get(FuncName);
|
|
|
+ FunctionDecl *FD = FunctionDecl::Create(
|
|
|
+ Ctx, Ctx.getTranslationUnitDecl(), SourceLocation(), SourceLocation(),
|
|
|
+ II, Ctx.VoidTy, nullptr, SC_PrivateExtern, false, false);
|
|
|
+ CodeGenFunction NewCGF(CGM);
|
|
|
+ setCGF(&NewCGF);
|
|
|
+ CGF->StartFunction(FD, Ctx.VoidTy, F, FI, Args);
|
|
|
+
|
|
|
+ for (unsigned I = 0; I < N; ++I) {
|
|
|
+ llvm::Value *V = CGF->Builder.CreateLoad(CGF->GetAddrOfLocalVar(Args[I]));
|
|
|
+ Addrs[I] = Address(V, Alignments[I]);
|
|
|
+ }
|
|
|
+
|
|
|
+ asDerived().visitStructFields(QT, CharUnits::Zero(), Addrs);
|
|
|
+ CGF->FinishFunction();
|
|
|
+ return F;
|
|
|
+ }
|
|
|
+
|
|
|
+ template <size_t N>
|
|
|
+ void callFunc(StringRef FuncName, QualType QT, std::array<Address, N> Addrs,
|
|
|
+ CodeGenFunction &CallerCGF) {
|
|
|
+ std::array<CharUnits, N> Alignments;
|
|
|
+ llvm::Value *Ptrs[N];
|
|
|
+
|
|
|
+ for (unsigned I = 0; I < N; ++I) {
|
|
|
+ Alignments[I] = Addrs[I].getAlignment();
|
|
|
+ Ptrs[I] =
|
|
|
+ CallerCGF.Builder.CreateBitCast(Addrs[I], CallerCGF.CGM.Int8PtrPtrTy)
|
|
|
+ .getPointer();
|
|
|
+ }
|
|
|
+
|
|
|
+ if (llvm::Function *F =
|
|
|
+ getFunction(FuncName, QT, Addrs, Alignments, CallerCGF.CGM))
|
|
|
+ CallerCGF.EmitNounwindRuntimeCall(F, Ptrs);
|
|
|
+ }
|
|
|
+
|
|
|
+ Derived &asDerived() { return static_cast<Derived &>(*this); }
|
|
|
+
|
|
|
+ void setCGF(CodeGenFunction *F) { CGF = F; }
|
|
|
+
|
|
|
+ CodeGenFunction *CGF = nullptr;
|
|
|
+};
|
|
|
+
|
|
|
+template <class Derived, bool IsMove>
|
|
|
+struct GenBinaryFunc : CopyStructVisitor<Derived, IsMove>,
|
|
|
+ GenFuncBase<Derived> {
|
|
|
+ GenBinaryFunc(ASTContext &Ctx) : CopyStructVisitor<Derived, IsMove>(Ctx) {}
|
|
|
+
|
|
|
+ void flushTrivialFields(std::array<Address, 2> Addrs) {
|
|
|
+ CharUnits Size = this->End - this->Start;
|
|
|
+
|
|
|
+ if (Size.getQuantity() == 0)
|
|
|
+ return;
|
|
|
+
|
|
|
+ Address DstAddr = this->getAddrWithOffset(Addrs[DstIdx], this->Start);
|
|
|
+ Address SrcAddr = this->getAddrWithOffset(Addrs[SrcIdx], this->Start);
|
|
|
+
|
|
|
+ // Emit memcpy.
|
|
|
+ if (Size.getQuantity() >= 16 || !llvm::isPowerOf2_32(Size.getQuantity())) {
|
|
|
+ llvm::Value *SizeVal =
|
|
|
+ llvm::ConstantInt::get(this->CGF->SizeTy, Size.getQuantity());
|
|
|
+ DstAddr =
|
|
|
+ this->CGF->Builder.CreateElementBitCast(DstAddr, this->CGF->Int8Ty);
|
|
|
+ SrcAddr =
|
|
|
+ this->CGF->Builder.CreateElementBitCast(SrcAddr, this->CGF->Int8Ty);
|
|
|
+ this->CGF->Builder.CreateMemCpy(DstAddr, SrcAddr, SizeVal, false);
|
|
|
+ } else {
|
|
|
+ llvm::Type *Ty = llvm::Type::getIntNTy(
|
|
|
+ this->CGF->getLLVMContext(),
|
|
|
+ Size.getQuantity() * this->CGF->getContext().getCharWidth());
|
|
|
+ DstAddr = this->CGF->Builder.CreateElementBitCast(DstAddr, Ty);
|
|
|
+ SrcAddr = this->CGF->Builder.CreateElementBitCast(SrcAddr, Ty);
|
|
|
+ llvm::Value *SrcVal = this->CGF->Builder.CreateLoad(SrcAddr, false);
|
|
|
+ this->CGF->Builder.CreateStore(SrcVal, DstAddr, false);
|
|
|
+ }
|
|
|
+
|
|
|
+ this->Start = this->End = CharUnits::Zero();
|
|
|
+ }
|
|
|
+
|
|
|
+ template <class... Ts>
|
|
|
+ void visitVolatileTrivial(QualType FT, const FieldDecl *FD, CharUnits Offset,
|
|
|
+ std::array<Address, 2> Addrs) {
|
|
|
+ QualType RT = QualType(FD->getParent()->getTypeForDecl(), 0);
|
|
|
+ llvm::PointerType *PtrTy = this->CGF->ConvertType(RT)->getPointerTo();
|
|
|
+ Address DstAddr = this->getAddrWithOffset(Addrs[DstIdx], Offset);
|
|
|
+ LValue DstBase = this->CGF->MakeAddrLValue(
|
|
|
+ this->CGF->Builder.CreateBitCast(DstAddr, PtrTy), FT);
|
|
|
+ LValue DstLV = this->CGF->EmitLValueForField(DstBase, FD);
|
|
|
+ Address SrcAddr = this->getAddrWithOffset(Addrs[SrcIdx], Offset);
|
|
|
+ LValue SrcBase = this->CGF->MakeAddrLValue(
|
|
|
+ this->CGF->Builder.CreateBitCast(SrcAddr, PtrTy), FT);
|
|
|
+ LValue SrcLV = this->CGF->EmitLValueForField(SrcBase, FD);
|
|
|
+ RValue SrcVal = this->CGF->EmitLoadOfLValue(SrcLV, SourceLocation());
|
|
|
+ this->CGF->EmitStoreThroughLValue(SrcVal, DstLV);
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+// These classes that emit the special functions for a non-trivial struct.
|
|
|
+struct GenDestructor : StructVisitor<GenDestructor>,
|
|
|
+ GenFuncBase<GenDestructor>,
|
|
|
+ DestructedTypeVisitor<GenDestructor> {
|
|
|
+ GenDestructor(ASTContext &Ctx) : StructVisitor<GenDestructor>(Ctx) {}
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 1> Addrs) {
|
|
|
+ CGF->destroyARCStrongImprecise(
|
|
|
+ *CGF, getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD), QT);
|
|
|
+ }
|
|
|
+
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 1> Addrs) {
|
|
|
+ CGF->callCStructDestructor(
|
|
|
+ CGF->MakeAddrLValue(getAddrWithOffset(Addrs[DstIdx], Offset), FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+struct GenDefaultInitialize
|
|
|
+ : StructVisitor<GenDefaultInitialize>,
|
|
|
+ GenFuncBase<GenDefaultInitialize>,
|
|
|
+ DefaultInitializedTypeVisitor<GenDefaultInitialize> {
|
|
|
+ typedef GenFuncBase<GenDefaultInitialize> GenFuncBaseTy;
|
|
|
+ GenDefaultInitialize(ASTContext &Ctx)
|
|
|
+ : StructVisitor<GenDefaultInitialize>(Ctx) {}
|
|
|
+
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 1> Addrs) {
|
|
|
+ CGF->EmitNullInitialization(
|
|
|
+ getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD), QT);
|
|
|
+ }
|
|
|
+
|
|
|
+ template <class FieldKind, size_t... Is>
|
|
|
+ void visitArray(FieldKind FK, QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 1> Addrs) {
|
|
|
+ if (!FK)
|
|
|
+ return visitTrivial(QT, FD, CurStackOffset, Addrs);
|
|
|
+
|
|
|
+ ASTContext &Ctx = getContext();
|
|
|
+ CharUnits Size = Ctx.getTypeSizeInChars(QT);
|
|
|
+ QualType EltTy = Ctx.getBaseElementType(QT);
|
|
|
+
|
|
|
+ if (Size < CharUnits::fromQuantity(16) || EltTy->getAs<RecordType>()) {
|
|
|
+ GenFuncBaseTy::visitArray(FK, QT, FD, CurStackOffset, Addrs);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ llvm::Constant *SizeVal = CGF->Builder.getInt64(Size.getQuantity());
|
|
|
+ Address DstAddr = getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD);
|
|
|
+ Address Loc = CGF->Builder.CreateElementBitCast(DstAddr, CGF->Int8Ty);
|
|
|
+ CGF->Builder.CreateMemSet(Loc, CGF->Builder.getInt8(0), SizeVal,
|
|
|
+ QT.isVolatileQualified());
|
|
|
+ }
|
|
|
+
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 1> Addrs) {
|
|
|
+ CGF->callCStructDefaultConstructor(
|
|
|
+ CGF->MakeAddrLValue(getAddrWithOffset(Addrs[DstIdx], Offset), FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+struct GenCopyConstructor : GenBinaryFunc<GenCopyConstructor, false> {
|
|
|
+ GenCopyConstructor(ASTContext &Ctx)
|
|
|
+ : GenBinaryFunc<GenCopyConstructor, false>(Ctx) {}
|
|
|
+
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 2> Addrs) {
|
|
|
+ Addrs[DstIdx] = getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD);
|
|
|
+ Addrs[SrcIdx] = getAddrWithOffset(Addrs[SrcIdx], CurStackOffset, FD);
|
|
|
+ llvm::Value *SrcVal = CGF->EmitLoadOfScalar(
|
|
|
+ Addrs[SrcIdx], QT.isVolatileQualified(), QT, SourceLocation());
|
|
|
+ llvm::Value *Val = CGF->EmitARCRetain(QT, SrcVal);
|
|
|
+ CGF->EmitStoreOfScalar(Val, CGF->MakeAddrLValue(Addrs[DstIdx], QT), true);
|
|
|
+ }
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 2> Addrs) {
|
|
|
+ CGF->callCStructCopyConstructor(CGF->MakeAddrLValue(Addrs[DstIdx], FT),
|
|
|
+ CGF->MakeAddrLValue(Addrs[SrcIdx], FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+struct GenMoveConstructor : GenBinaryFunc<GenMoveConstructor, true> {
|
|
|
+ GenMoveConstructor(ASTContext &Ctx)
|
|
|
+ : GenBinaryFunc<GenMoveConstructor, true>(Ctx) {}
|
|
|
+
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 2> Addrs) {
|
|
|
+ Addrs[DstIdx] = getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD);
|
|
|
+ Addrs[SrcIdx] = getAddrWithOffset(Addrs[SrcIdx], CurStackOffset, FD);
|
|
|
+ LValue SrcLV = CGF->MakeAddrLValue(Addrs[SrcIdx], QT);
|
|
|
+ llvm::Value *SrcVal =
|
|
|
+ CGF->EmitLoadOfLValue(SrcLV, SourceLocation()).getScalarVal();
|
|
|
+ CGF->EmitStoreOfScalar(getNullForVariable(SrcLV.getAddress()), SrcLV);
|
|
|
+ CGF->EmitStoreOfScalar(SrcVal, CGF->MakeAddrLValue(Addrs[DstIdx], QT),
|
|
|
+ /* isInitialization */ true);
|
|
|
+ }
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 2> Addrs) {
|
|
|
+ CGF->callCStructMoveConstructor(CGF->MakeAddrLValue(Addrs[DstIdx], FT),
|
|
|
+ CGF->MakeAddrLValue(Addrs[SrcIdx], FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+struct GenCopyAssignment : GenBinaryFunc<GenCopyAssignment, false> {
|
|
|
+ GenCopyAssignment(ASTContext &Ctx)
|
|
|
+ : GenBinaryFunc<GenCopyAssignment, false>(Ctx) {}
|
|
|
+
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 2> Addrs) {
|
|
|
+ Addrs[DstIdx] = getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD);
|
|
|
+ Addrs[SrcIdx] = getAddrWithOffset(Addrs[SrcIdx], CurStackOffset, FD);
|
|
|
+ llvm::Value *SrcVal = CGF->EmitLoadOfScalar(
|
|
|
+ Addrs[SrcIdx], QT.isVolatileQualified(), QT, SourceLocation());
|
|
|
+ CGF->EmitARCStoreStrong(CGF->MakeAddrLValue(Addrs[DstIdx], QT), SrcVal,
|
|
|
+ false);
|
|
|
+ }
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 2> Addrs) {
|
|
|
+ CGF->callCStructCopyAssignmentOperator(
|
|
|
+ CGF->MakeAddrLValue(Addrs[DstIdx], FT),
|
|
|
+ CGF->MakeAddrLValue(Addrs[SrcIdx], FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+struct GenMoveAssignment : GenBinaryFunc<GenMoveAssignment, true> {
|
|
|
+ GenMoveAssignment(ASTContext &Ctx)
|
|
|
+ : GenBinaryFunc<GenMoveAssignment, true>(Ctx) {}
|
|
|
+
|
|
|
+ void visitARCStrong(QualType QT, const FieldDecl *FD,
|
|
|
+ CharUnits CurStackOffset, std::array<Address, 2> Addrs) {
|
|
|
+ Addrs[DstIdx] = getAddrWithOffset(Addrs[DstIdx], CurStackOffset, FD);
|
|
|
+ Addrs[SrcIdx] = getAddrWithOffset(Addrs[SrcIdx], CurStackOffset, FD);
|
|
|
+ LValue SrcLV = CGF->MakeAddrLValue(Addrs[SrcIdx], QT);
|
|
|
+ llvm::Value *SrcVal =
|
|
|
+ CGF->EmitLoadOfLValue(SrcLV, SourceLocation()).getScalarVal();
|
|
|
+ CGF->EmitStoreOfScalar(getNullForVariable(SrcLV.getAddress()), SrcLV);
|
|
|
+ LValue DstLV = CGF->MakeAddrLValue(Addrs[DstIdx], QT);
|
|
|
+ llvm::Value *DstVal =
|
|
|
+ CGF->EmitLoadOfLValue(DstLV, SourceLocation()).getScalarVal();
|
|
|
+ CGF->EmitStoreOfScalar(SrcVal, DstLV);
|
|
|
+ CGF->EmitARCRelease(DstVal, ARCImpreciseLifetime);
|
|
|
+ }
|
|
|
+
|
|
|
+ void callSpecialFunction(QualType FT, CharUnits Offset,
|
|
|
+ std::array<Address, 2> Addrs) {
|
|
|
+ CGF->callCStructMoveAssignmentOperator(
|
|
|
+ CGF->MakeAddrLValue(Addrs[DstIdx], FT),
|
|
|
+ CGF->MakeAddrLValue(Addrs[SrcIdx], FT));
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+} // namespace
|
|
|
+
|
|
|
+void CodeGenFunction::destroyNonTrivialCStruct(CodeGenFunction &CGF,
|
|
|
+ Address Addr, QualType Type) {
|
|
|
+ CGF.callCStructDestructor(CGF.MakeAddrLValue(Addr, Type));
|
|
|
+}
|
|
|
+
|
|
|
+// Default-initialize a variable that is a non-trivial struct or an array of
|
|
|
+// such structure.
|
|
|
+void CodeGenFunction::defaultInitNonTrivialCStructVar(LValue Dst) {
|
|
|
+ GenDefaultInitialize Gen(getContext());
|
|
|
+ Address DstPtr = Builder.CreateBitCast(Dst.getAddress(), CGM.Int8PtrPtrTy);
|
|
|
+ Gen.setCGF(this);
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ QT = Dst.isVolatile() ? QT.withVolatile() : QT;
|
|
|
+ Gen.visit(QT, nullptr, CharUnits::Zero(), std::array<Address, 1>({{DstPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+template <class G, size_t N>
|
|
|
+static void callSpecialFunction(G &&Gen, StringRef FuncName, QualType QT,
|
|
|
+ bool IsVolatile, CodeGenFunction &CGF,
|
|
|
+ std::array<Address, N> Addrs) {
|
|
|
+ for (unsigned I = 0; I < N; ++I)
|
|
|
+ Addrs[I] = CGF.Builder.CreateBitCast(Addrs[I], CGF.CGM.Int8PtrPtrTy);
|
|
|
+ QT = IsVolatile ? QT.withVolatile() : QT;
|
|
|
+ Gen.callFunc(FuncName, QT, Addrs, CGF);
|
|
|
+}
|
|
|
+
|
|
|
+// Functions to emit calls to the special functions of a non-trivial C struct.
|
|
|
+void CodeGenFunction::callCStructDefaultConstructor(LValue Dst) {
|
|
|
+ bool IsVolatile = Dst.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenDefaultInitializeFuncName GenName(DstPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenDefaultInitialize(getContext()), FuncName, QT,
|
|
|
+ IsVolatile, *this, std::array<Address, 1>({{DstPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+void CodeGenFunction::callCStructDestructor(LValue Dst) {
|
|
|
+ bool IsVolatile = Dst.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenDestructorFuncName GenName(DstPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenDestructor(getContext()), FuncName, QT, IsVolatile,
|
|
|
+ *this, std::array<Address, 1>({{DstPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+void CodeGenFunction::callCStructCopyConstructor(LValue Dst, LValue Src) {
|
|
|
+ bool IsVolatile = Dst.isVolatile() || Src.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress(), SrcPtr = Src.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenBinaryFuncName<false> GenName("__copy_constructor_", DstPtr.getAlignment(),
|
|
|
+ SrcPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenCopyConstructor(getContext()), FuncName, QT,
|
|
|
+ IsVolatile, *this,
|
|
|
+ std::array<Address, 2>({{DstPtr, SrcPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+void CodeGenFunction::callCStructCopyAssignmentOperator(LValue Dst, LValue Src
|
|
|
+
|
|
|
+) {
|
|
|
+ bool IsVolatile = Dst.isVolatile() || Src.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress(), SrcPtr = Src.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenBinaryFuncName<false> GenName("__copy_assignment_", DstPtr.getAlignment(),
|
|
|
+ SrcPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenCopyAssignment(getContext()), FuncName, QT, IsVolatile,
|
|
|
+ *this, std::array<Address, 2>({{DstPtr, SrcPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+void CodeGenFunction::callCStructMoveConstructor(LValue Dst, LValue Src) {
|
|
|
+ bool IsVolatile = Dst.isVolatile() || Src.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress(), SrcPtr = Src.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenBinaryFuncName<true> GenName("__move_constructor_", DstPtr.getAlignment(),
|
|
|
+ SrcPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenMoveConstructor(getContext()), FuncName, QT,
|
|
|
+ IsVolatile, *this,
|
|
|
+ std::array<Address, 2>({{DstPtr, SrcPtr}}));
|
|
|
+}
|
|
|
+
|
|
|
+void CodeGenFunction::callCStructMoveAssignmentOperator(LValue Dst, LValue Src
|
|
|
+
|
|
|
+) {
|
|
|
+ bool IsVolatile = Dst.isVolatile() || Src.isVolatile();
|
|
|
+ Address DstPtr = Dst.getAddress(), SrcPtr = Src.getAddress();
|
|
|
+ QualType QT = Dst.getType();
|
|
|
+ GenBinaryFuncName<true> GenName("__move_assignment_", DstPtr.getAlignment(),
|
|
|
+ SrcPtr.getAlignment(), getContext());
|
|
|
+ std::string FuncName = GenName.getName(QT, IsVolatile);
|
|
|
+ callSpecialFunction(GenMoveAssignment(getContext()), FuncName, QT, IsVolatile,
|
|
|
+ *this, std::array<Address, 2>({{DstPtr, SrcPtr}}));
|
|
|
+}
|
Akira Hatanaka