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96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
//===--- CallEmission.h - Utility for emitting calls ------------*- C++ -*-===//
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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 - 2017 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 https://swift.org/LICENSE.txt for license information
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// See https://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 defines the CallEmitter class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_IRGEN_CALLEMISSION_H
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#define SWIFT_IRGEN_CALLEMISSION_H
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#include "Callee.h"
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namespace llvm {
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class CallSite;
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}
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namespace swift {
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namespace irgen {
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class LoadableTypeInfo;
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struct WitnessMetadata;
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/// A plan for emitting a series of calls.
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class CallEmission {
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public:
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IRGenFunction &IGF;
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private:
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/// The function attributes for the call.
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llvm::AttributeList Attrs;
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/// The builtin/special arguments to pass to the call.
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SmallVector<llvm::Value*, 8> Args;
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/// The function we're going to call.
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Callee CurCallee;
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unsigned LastArgWritten;
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/// Whether we've emitted the call for the current callee yet. This
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/// is just for debugging purposes --- e.g. the destructor asserts
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/// that it's true --- but is otherwise derivable from
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/// RemainingArgsForCallee, at least between calls.
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bool EmittedCall;
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void setFromCallee();
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void emitToUnmappedMemory(Address addr);
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void emitToUnmappedExplosion(Explosion &out);
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llvm::CallSite emitCallSite();
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llvm::CallSite emitInvoke(llvm::CallingConv::ID cc, llvm::Value *fn,
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ArrayRef<llvm::Value *> args,
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const llvm::AttributeList &attrs);
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public:
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CallEmission(IRGenFunction &IGF, const Callee &callee)
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: IGF(IGF), CurCallee(callee) {
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setFromCallee();
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}
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CallEmission(const CallEmission &other) = delete;
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CallEmission(CallEmission &&other);
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CallEmission &operator=(const CallEmission &other) = delete;
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~CallEmission();
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Callee &getMutableCallee() { return CurCallee; }
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const Callee &getCallee() const { return CurCallee; }
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SubstitutionList getSubstitutions() const {
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return CurCallee.getSubstitutions();
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}
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/// Set the arguments to the function from an explosion.
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void setArgs(Explosion &arg, WitnessMetadata *witnessMetadata = nullptr);
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void addAttribute(unsigned Index, llvm::Attribute::AttrKind Attr);
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void emitToMemory(Address addr, const LoadableTypeInfo &substResultTI);
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void emitToExplosion(Explosion &out);
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void invalidate();
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};
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}
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}
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#endif
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