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ff02652108
This reorganization allows adding attributes that refer to types. I need this for a @_specialize attribute with a type list. PrintOptions.h and other headers depend on these enums. But Attr.h defines a lot of classes that almost never need to be included.
306 lines
9.2 KiB
C++
306 lines
9.2 KiB
C++
//===--- Mangle.cpp - SIL specific name Mangling --------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements declaration specialized name mangling for SIL.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/SIL/Mangle.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/ASTVisitor.h"
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#include "swift/AST/Initializer.h"
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#include "swift/AST/Mangle.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/ProtocolConformance.h"
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#include "swift/Basic/Punycode.h"
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#include "swift/SIL/SILArgument.h"
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#include "swift/SIL/SILType.h"
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#include "swift/SIL/SILGlobalVariable.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/Basic/CharInfo.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/MD5.h"
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#include "llvm/Support/SaveAndRestore.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace swift;
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using namespace Mangle;
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//===----------------------------------------------------------------------===//
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// Generic Specialization
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//===----------------------------------------------------------------------===//
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static void mangleSubstitution(Mangler &M, Substitution Sub) {
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M.mangleType(Sub.getReplacement()->getCanonicalType(), 0);
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for (auto C : Sub.getConformances()) {
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if (C.isAbstract())
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return;
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M.mangleProtocolConformance(C.getConcrete());
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}
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}
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void GenericSpecializationMangler::mangleSpecialization() {
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Mangler &M = getMangler();
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for (auto &Sub : Subs) {
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mangleSubstitution(M, Sub);
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M.append('_');
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}
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}
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//===----------------------------------------------------------------------===//
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// Function Signature Optimizations
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//===----------------------------------------------------------------------===//
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FunctionSignatureSpecializationMangler::
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FunctionSignatureSpecializationMangler(SpecializationPass P, Mangler &M,
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SILFunction *F)
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: SpecializationMangler(SpecializationKind::FunctionSignature, P, M, F) {
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for (unsigned i = 0, e = F->getLoweredFunctionType()->getNumSILArguments();
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i != e; ++i) {
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(void)i;
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Args.push_back({ArgumentModifierIntBase(ArgumentModifier::Unmodified), nullptr});
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}
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ReturnValue = ReturnValueModifierIntBase(ReturnValueModifier::Unmodified);
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentDead(unsigned ArgNo) {
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Args[ArgNo].first = ArgumentModifierIntBase(ArgumentModifier::Dead);
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentClosureProp(unsigned ArgNo, PartialApplyInst *PAI) {
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auto &Info = Args[ArgNo];
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Info.first = ArgumentModifierIntBase(ArgumentModifier::ClosureProp);
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Info.second = PAI;
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentClosureProp(unsigned ArgNo, ThinToThickFunctionInst *TTTFI) {
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auto &Info = Args[ArgNo];
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Info.first = ArgumentModifierIntBase(ArgumentModifier::ClosureProp);
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Info.second = TTTFI;
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentConstantProp(unsigned ArgNo, LiteralInst *LI) {
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auto &Info = Args[ArgNo];
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Info.first = ArgumentModifierIntBase(ArgumentModifier::ConstantProp);
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Info.second = LI;
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentOwnedToGuaranteed(unsigned ArgNo) {
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Args[ArgNo].first |= ArgumentModifierIntBase(ArgumentModifier::OwnedToGuaranteed);
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentSROA(unsigned ArgNo) {
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Args[ArgNo].first |= ArgumentModifierIntBase(ArgumentModifier::SROA);
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentBoxToValue(unsigned ArgNo) {
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Args[ArgNo].first = ArgumentModifierIntBase(ArgumentModifier::BoxToValue);
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}
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void
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FunctionSignatureSpecializationMangler::
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setArgumentBoxToStack(unsigned ArgNo) {
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Args[ArgNo].first = ArgumentModifierIntBase(ArgumentModifier::BoxToStack);
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}
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void
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FunctionSignatureSpecializationMangler::
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setReturnValueOwnedToUnowned() {
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ReturnValue |= ReturnValueModifierIntBase(ReturnValueModifier::OwnedToUnowned);
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}
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void
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FunctionSignatureSpecializationMangler::mangleConstantProp(LiteralInst *LI) {
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Mangler &M = getMangler();
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// Append the prefix for constant propagation 'cp'.
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M.append("cp");
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// Then append the unique identifier of our literal.
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switch (LI->getKind()) {
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default:
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llvm_unreachable("unknown literal");
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case ValueKind::FunctionRefInst: {
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SILFunction *F = cast<FunctionRefInst>(LI)->getReferencedFunction();
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M.append("fr");
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M.mangleIdentifierSymbol(F->getName());
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break;
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}
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case ValueKind::GlobalAddrInst: {
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SILGlobalVariable *G = cast<GlobalAddrInst>(LI)->getReferencedGlobal();
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M.append("g");
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M.mangleIdentifierSymbol(G->getName());
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break;
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}
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case ValueKind::IntegerLiteralInst: {
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APInt apint = cast<IntegerLiteralInst>(LI)->getValue();
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M.append("i");
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M.mangleNatural(apint);
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break;
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}
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case ValueKind::FloatLiteralInst: {
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APInt apint = cast<FloatLiteralInst>(LI)->getBits();
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M.append("fl");
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M.mangleNatural(apint);
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break;
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}
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case ValueKind::StringLiteralInst: {
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StringLiteralInst *SLI = cast<StringLiteralInst>(LI);
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StringRef V = SLI->getValue();
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assert(V.size() <= 32 && "Cannot encode string of length > 32");
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llvm::SmallString<33> Str;
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Str += "u";
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Str += V;
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M.append("se");
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M.mangleNatural(APInt(32, unsigned(SLI->getEncoding())));
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M.append("v");
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M.mangleIdentifier(Str);
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break;
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}
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}
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}
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void
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FunctionSignatureSpecializationMangler::
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mangleClosureProp(PartialApplyInst *PAI) {
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Mangler &M = getMangler();
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M.append("cl");
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// Add in the partial applies function name if we can find one. Assert
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// otherwise. The reason why this is ok to do is currently we only perform
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// closure specialization if we know the function_ref in question. When this
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// restriction is removed, the assert here will fire.
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auto *FRI = cast<FunctionRefInst>(PAI->getCallee());
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M.mangleIdentifierSymbol(FRI->getReferencedFunction()->getName());
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// Then we mangle the types of the arguments that the partial apply is
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// specializing.
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for (auto &Op : PAI->getArgumentOperands()) {
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SILType Ty = Op.get()->getType();
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M.mangleType(Ty.getSwiftRValueType(), 0);
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}
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}
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void FunctionSignatureSpecializationMangler::mangleClosureProp(
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ThinToThickFunctionInst *TTTFI) {
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Mangler &M = getMangler();
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M.append("cl");
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// Add in the partial applies function name if we can find one. Assert
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// otherwise. The reason why this is ok to do is currently we only perform
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// closure specialization if we know the function_ref in question. When this
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// restriction is removed, the assert here will fire.
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auto *FRI = cast<FunctionRefInst>(TTTFI->getCallee());
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M.mangleIdentifierSymbol(FRI->getReferencedFunction()->getName());
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}
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void FunctionSignatureSpecializationMangler::mangleArgument(
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ArgumentModifierIntBase ArgMod, NullablePtr<SILInstruction> Inst) {
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if (ArgMod == ArgumentModifierIntBase(ArgumentModifier::ConstantProp)) {
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mangleConstantProp(cast<LiteralInst>(Inst.get()));
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return;
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}
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if (ArgMod == ArgumentModifierIntBase(ArgumentModifier::ClosureProp)) {
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if (auto *PAI = dyn_cast<PartialApplyInst>(Inst.get())) {
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mangleClosureProp(PAI);
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return;
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}
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auto *TTTFI = cast<ThinToThickFunctionInst>(Inst.get());
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mangleClosureProp(TTTFI);
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return;
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}
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if (ArgMod == ArgumentModifierIntBase(ArgumentModifier::Unmodified)) {
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M.append("n");
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return;
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}
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if (ArgMod == ArgumentModifierIntBase(ArgumentModifier::BoxToValue)) {
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M.append("i");
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return;
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}
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if (ArgMod == ArgumentModifierIntBase(ArgumentModifier::BoxToStack)) {
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M.append("k");
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return;
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}
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bool hasSomeMod = false;
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if (ArgMod & ArgumentModifierIntBase(ArgumentModifier::Dead)) {
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M.append("d");
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hasSomeMod = true;
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}
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if (ArgMod & ArgumentModifierIntBase(ArgumentModifier::OwnedToGuaranteed)) {
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M.append("g");
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hasSomeMod = true;
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}
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if (ArgMod & ArgumentModifierIntBase(ArgumentModifier::SROA)) {
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M.append("s");
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hasSomeMod = true;
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}
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assert(hasSomeMod && "Unknown modifier");
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}
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void FunctionSignatureSpecializationMangler::
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mangleReturnValue(ReturnValueModifierIntBase RetMod) {
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if (RetMod == ReturnValueModifierIntBase(ReturnValueModifier::Unmodified)) {
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return;
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}
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if (RetMod & ReturnValueModifierIntBase(ReturnValueModifier::Dead)) {
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M.append("d");
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}
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if (RetMod & ReturnValueModifierIntBase(ReturnValueModifier::OwnedToUnowned)) {
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M.append("g");
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}
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}
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void FunctionSignatureSpecializationMangler::mangleSpecialization() {
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for (unsigned i : indices(Args)) {
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ArgumentModifierIntBase ArgMod;
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NullablePtr<SILInstruction> Inst;
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std::tie(ArgMod, Inst) = Args[i];
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mangleArgument(ArgMod, Inst);
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M.append("_");
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}
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mangleReturnValue(ReturnValue);
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}
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