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24dded2342
initialization. Initialize the subtarget once per function and
migrate Emit{Start|End}OfAsmFile to either use attributes on the
TargetMachine or get information from the subtarget we'd use
for assembling. One bit (getISAEncoding) touched the general
AsmPrinter and the debug output. Handle this one by passing
the function for the subprogram down and updating all callers
and users.
The top-level-ness of the ARM attribute output for assembly is,
by nature, contrary to how we'd want to do this for an LTO
situation where we have multiple cpu architectures so this
solution is good enough for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229528 91177308-0d34-0410-b5e6-96231b3b80d8
132 lines
4.3 KiB
C++
132 lines
4.3 KiB
C++
//===-- ARMTargetMachine.h - Define TargetMachine for ARM -------*- C++ -*-===//
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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 declares the ARM specific subclass of TargetMachine.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_ARMTARGETMACHINE_H
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#define LLVM_LIB_TARGET_ARM_ARMTARGETMACHINE_H
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#include "ARMInstrInfo.h"
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#include "ARMSubtarget.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class ARMBaseTargetMachine : public LLVMTargetMachine {
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public:
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enum ARMABI {
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ARM_ABI_UNKNOWN,
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ARM_ABI_APCS,
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ARM_ABI_AAPCS // ARM EABI
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} TargetABI;
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protected:
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const DataLayout DL;
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std::unique_ptr<TargetLoweringObjectFile> TLOF;
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ARMSubtarget Subtarget;
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bool isLittle;
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mutable StringMap<std::unique_ptr<ARMSubtarget>> SubtargetMap;
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public:
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ARMBaseTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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const TargetOptions &Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL,
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bool isLittle);
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~ARMBaseTargetMachine() override;
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const ARMSubtarget *getSubtargetImpl() const override { return &Subtarget; }
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const ARMSubtarget *getSubtargetImpl(const Function &F) const override;
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const DataLayout *getDataLayout() const override { return &DL; }
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bool isLittleEndian() const { return isLittle; }
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/// \brief Get the TargetIRAnalysis for this target.
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TargetIRAnalysis getTargetIRAnalysis() override;
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// Pass Pipeline Configuration
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TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
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TargetLoweringObjectFile *getObjFileLowering() const override {
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return TLOF.get();
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}
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};
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/// ARMTargetMachine - ARM target machine.
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///
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class ARMTargetMachine : public ARMBaseTargetMachine {
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virtual void anchor();
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public:
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ARMTargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS,
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const TargetOptions &Options, Reloc::Model RM,
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CodeModel::Model CM, CodeGenOpt::Level OL, bool isLittle);
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};
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/// ARMLETargetMachine - ARM little endian target machine.
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///
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class ARMLETargetMachine : public ARMTargetMachine {
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void anchor() override;
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public:
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ARMLETargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS, const TargetOptions &Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL);
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};
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/// ARMBETargetMachine - ARM big endian target machine.
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///
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class ARMBETargetMachine : public ARMTargetMachine {
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void anchor() override;
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public:
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ARMBETargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS,
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const TargetOptions &Options, Reloc::Model RM,
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CodeModel::Model CM, CodeGenOpt::Level OL);
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};
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/// ThumbTargetMachine - Thumb target machine.
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/// Due to the way architectures are handled, this represents both
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/// Thumb-1 and Thumb-2.
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///
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class ThumbTargetMachine : public ARMBaseTargetMachine {
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virtual void anchor();
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public:
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ThumbTargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS,
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const TargetOptions &Options, Reloc::Model RM,
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CodeModel::Model CM, CodeGenOpt::Level OL, bool isLittle);
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};
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/// ThumbLETargetMachine - Thumb little endian target machine.
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///
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class ThumbLETargetMachine : public ThumbTargetMachine {
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void anchor() override;
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public:
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ThumbLETargetMachine(const Target &T, StringRef TT, StringRef CPU,
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StringRef FS, const TargetOptions &Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL);
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};
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/// ThumbBETargetMachine - Thumb big endian target machine.
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///
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class ThumbBETargetMachine : public ThumbTargetMachine {
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void anchor() override;
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public:
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ThumbBETargetMachine(const Target &T, StringRef TT, StringRef CPU,
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StringRef FS, const TargetOptions &Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OL);
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};
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} // end namespace llvm
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#endif
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