llvm-6502/lib/Target/X86/X86TargetMachine.h
Reid Kleckner d12434058d Add out of line virtual destructors to all LLVMTargetMachine subclasses
These recently all grew a unique_ptr<TargetLoweringObjectFile> member in
r221878.  When anyone calls a virtual method of a class, clang-cl
requires all virtual methods to be semantically valid. This includes the
implicit virtual destructor, which triggers instantiation of the
unique_ptr destructor, which fails because the type being deleted is
incomplete.

This is just part of the ongoing saga of PR20337, which is affecting
Blink as well. Because the MSVC ABI doesn't have key functions, we end
up referencing the vtable and implicit destructor on any virtual call
through a class. We don't actually end up emitting the dtor, so it'd be
good if we could avoid this unneeded type completion work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222480 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-20 23:37:18 +00:00

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1.7 KiB
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//===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the X86 specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
#define LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
class StringRef;
class X86TargetMachine final : public LLVMTargetMachine {
std::unique_ptr<TargetLoweringObjectFile> TLOF;
X86Subtarget Subtarget;
mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap;
public:
X86TargetMachine(const Target &T, StringRef TT,
StringRef CPU, StringRef FS, const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL);
~X86TargetMachine() override;
const X86Subtarget *getSubtargetImpl() const override { return &Subtarget; }
const X86Subtarget *getSubtargetImpl(const Function &F) const override;
/// \brief Register X86 analysis passes with a pass manager.
void addAnalysisPasses(PassManagerBase &PM) override;
// Set up the pass pipeline.
TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
TargetLoweringObjectFile *getObjFileLowering() const override {
return TLOF.get();
}
};
} // End llvm namespace
#endif