#ifndef ARMSUBTARGET_H
#define ARMSUBTARGET_H
+
+#include "ARMFrameLowering.h"
+#include "ARMISelLowering.h"
+#include "ARMInstrInfo.h"
+#include "ARMJITInfo.h"
+#include "ARMSelectionDAGInfo.h"
+#include "ARMSubtarget.h"
+#include "Thumb1FrameLowering.h"
+#include "Thumb1InstrInfo.h"
+#include "Thumb2InstrInfo.h"
+#include "ARMJITInfo.h"
#include "MCTargetDesc/ARMMCTargetDesc.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCInstrItineraries.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include <string>
class ARMSubtarget : public ARMGenSubtargetInfo {
protected:
enum ARMProcFamilyEnum {
- Others, CortexA5, CortexA7, CortexA8, CortexA9, CortexA12, CortexA15,
+ Others, CortexA5, CortexA7, CortexA8, CortexA9, CortexA12, CortexA15,
CortexR5, Swift, CortexA53, CortexA57, Krait
};
enum ARMProcClassEnum {
bool HasFPARMv8;
bool HasNEON;
- /// MinSize - True if the function being compiled has the "minsize" attribute
- /// and should be optimised for size at the expense of speed.
- bool MinSize;
-
/// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been
/// specified. Use the method useNEONForSinglePrecisionFP() to
/// determine if NEON should actually be used.
/// NoARM - True if subtarget does not support ARM mode execution.
bool NoARM;
- /// PostRAScheduler - True if using post-register-allocation scheduler.
- bool PostRAScheduler;
-
/// IsR9Reserved - True if R9 is a not available as general purpose register.
bool IsR9Reserved;
/// HasCRC - if true, processor supports CRC instructions
bool HasCRC;
+ /// If true, the instructions "vmov.i32 d0, #0" and "vmov.i32 q0, #0" are
+ /// particularly effective at zeroing a VFP register.
+ bool HasZeroCycleZeroing;
+
/// AllowsUnalignedMem - If true, the subtarget allows unaligned memory
/// accesses for some types. For details, see
- /// ARMTargetLowering::allowsUnalignedMemoryAccesses().
+ /// ARMTargetLowering::allowsMisalignedMemoryAccesses().
bool AllowsUnalignedMem;
/// RestrictIT - If true, the subtarget disallows generation of deprecated IT
/// CPUString - String name of used CPU.
std::string CPUString;
+ /// IsLittle - The target is Little Endian
+ bool IsLittle;
+
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
public:
enum {
+ ARM_ABI_UNKNOWN,
ARM_ABI_APCS,
ARM_ABI_AAPCS // ARM EABI
} TargetABI;
/// of the specified triple.
///
ARMSubtarget(const std::string &TT, const std::string &CPU,
- const std::string &FS, const TargetOptions &Options);
+ const std::string &FS, TargetMachine &TM, bool IsLittle,
+ const TargetOptions &Options);
/// getMaxInlineSizeThreshold - Returns the maximum memset / memcpy size
/// that still makes it profitable to inline the call.
unsigned getMaxInlineSizeThreshold() const {
- // FIXME: For now, we don't lower memcpy's to loads / stores for Thumb1.
- // Change this once Thumb1 ldmia / stmia support is added.
- return isThumb1Only() ? 0 : 64;
+ return 64;
}
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
/// \brief Reset the features for the ARM target.
- virtual void resetSubtargetFeatures(const MachineFunction *MF);
+ void resetSubtargetFeatures(const MachineFunction *MF) override;
+
+ /// initializeSubtargetDependencies - Initializes using a CPU and feature string
+ /// so that we can use initializer lists for subtarget initialization.
+ ARMSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
+
+ const DataLayout *getDataLayout() const override { return &DL; }
+ const ARMSelectionDAGInfo *getSelectionDAGInfo() const override {
+ return &TSInfo;
+ }
+ ARMJITInfo *getJITInfo() override { return &JITInfo; }
+ const ARMBaseInstrInfo *getInstrInfo() const override {
+ return InstrInfo.get();
+ }
+ const ARMTargetLowering *getTargetLowering() const override {
+ return &TLInfo;
+ }
+ const ARMFrameLowering *getFrameLowering() const override {
+ return FrameLowering.get();
+ }
+ const ARMBaseRegisterInfo *getRegisterInfo() const override {
+ return &InstrInfo->getRegisterInfo();
+ }
+
private:
+ const DataLayout DL;
+ ARMSelectionDAGInfo TSInfo;
+ ARMJITInfo JITInfo;
+ // Either Thumb1InstrInfo or Thumb2InstrInfo.
+ std::unique_ptr<ARMBaseInstrInfo> InstrInfo;
+ ARMTargetLowering TLInfo;
+ // Either Thumb1FrameLowering or ARMFrameLowering.
+ std::unique_ptr<ARMFrameLowering> FrameLowering;
+
void initializeEnvironment();
void resetSubtargetFeatures(StringRef CPU, StringRef FS);
public:
bool hasV8Ops() const { return HasV8Ops; }
bool isCortexA5() const { return ARMProcFamily == CortexA5; }
+ bool isCortexA7() const { return ARMProcFamily == CortexA7; }
bool isCortexA8() const { return ARMProcFamily == CortexA8; }
bool isCortexA9() const { return ARMProcFamily == CortexA9; }
bool isCortexA15() const { return ARMProcFamily == CortexA15; }
bool hasCrypto() const { return HasCrypto; }
bool hasCRC() const { return HasCRC; }
bool hasVirtualization() const { return HasVirtualization; }
- bool isMinSize() const { return MinSize; }
bool useNEONForSinglePrecisionFP() const {
return hasNEON() && UseNEONForSinglePrecisionFP; }
bool isFPOnlySP() const { return FPOnlySP; }
bool hasPerfMon() const { return HasPerfMon; }
bool hasTrustZone() const { return HasTrustZone; }
+ bool hasZeroCycleZeroing() const { return HasZeroCycleZeroing; }
bool prefers32BitThumb() const { return Pref32BitThumb; }
bool avoidCPSRPartialUpdate() const { return AvoidCPSRPartialUpdate; }
bool avoidMOVsShifterOperand() const { return AvoidMOVsShifterOperand; }
const Triple &getTargetTriple() const { return TargetTriple; }
- bool isTargetIOS() const { return TargetTriple.isiOS(); }
bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); }
- bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
+ bool isTargetIOS() const { return TargetTriple.isiOS(); }
bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
+ bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
+ bool isTargetNetBSD() const { return TargetTriple.getOS() == Triple::NetBSD; }
+ bool isTargetWindows() const { return TargetTriple.isOSWindows(); }
+
+ bool isTargetCOFF() const { return TargetTriple.isOSBinFormatCOFF(); }
bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
+ bool isTargetMachO() const { return TargetTriple.isOSBinFormatMachO(); }
+
// ARM EABI is the bare-metal EABI described in ARM ABI documents and
// can be accessed via -target arm-none-eabi. This is NOT GNUEABI.
// FIXME: Add a flag for bare-metal for that target and set Triple::EABI
// even for GNUEABI, so we can make a distinction here and still conform to
// the EABI on GNU (and Android) mode. This requires change in Clang, too.
+ // FIXME: The Darwin exception is temporary, while we move users to
+ // "*-*-*-macho" triples as quickly as possible.
bool isTargetAEABI() const {
- return TargetTriple.getEnvironment() == Triple::EABI ||
- TargetTriple.getEnvironment() == Triple::EABIHF;
+ return (TargetTriple.getEnvironment() == Triple::EABI ||
+ TargetTriple.getEnvironment() == Triple::EABIHF) &&
+ !isTargetDarwin() && !isTargetWindows();
+ }
+
+ // ARM Targets that support EHABI exception handling standard
+ // Darwin uses SjLj. Other targets might need more checks.
+ bool isTargetEHABICompatible() const {
+ return (TargetTriple.getEnvironment() == Triple::EABI ||
+ TargetTriple.getEnvironment() == Triple::GNUEABI ||
+ TargetTriple.getEnvironment() == Triple::EABIHF ||
+ TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
+ TargetTriple.getEnvironment() == Triple::Android) &&
+ !isTargetDarwin() && !isTargetWindows();
+ }
+
+ bool isTargetHardFloat() const {
+ // FIXME: this is invalid for WindowsCE
+ return TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
+ TargetTriple.getEnvironment() == Triple::EABIHF ||
+ isTargetWindows();
+ }
+ bool isTargetAndroid() const {
+ return TargetTriple.getEnvironment() == Triple::Android;
}
- bool isAPCS_ABI() const { return TargetABI == ARM_ABI_APCS; }
- bool isAAPCS_ABI() const { return TargetABI == ARM_ABI_AAPCS; }
+ bool isAPCS_ABI() const {
+ assert(TargetABI != ARM_ABI_UNKNOWN);
+ return TargetABI == ARM_ABI_APCS;
+ }
+ bool isAAPCS_ABI() const {
+ assert(TargetABI != ARM_ABI_UNKNOWN);
+ return TargetABI == ARM_ABI_AAPCS;
+ }
bool isThumb() const { return InThumbMode; }
bool isThumb1Only() const { return InThumbMode && !HasThumb2; }
bool isR9Reserved() const { return IsR9Reserved; }
- bool useMovt() const { return UseMovt && !isMinSize(); }
+ bool useMovt(const MachineFunction &MF) const;
+
bool supportsTailCall() const { return SupportsTailCall; }
bool allowsUnalignedMem() const { return AllowsUnalignedMem; }
const std::string & getCPUString() const { return CPUString; }
+ bool isLittle() const { return IsLittle; }
+
unsigned getMispredictionPenalty() const;
-
+
/// This function returns true if the target has sincos() routine in its
/// compiler runtime or math libraries.
bool hasSinCos() const;
- /// enablePostRAScheduler - True at 'More' optimization.
- bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
- TargetSubtargetInfo::AntiDepBreakMode& Mode,
- RegClassVector& CriticalPathRCs) const;
+ /// True for some subtargets at > -O0.
+ bool enablePostMachineScheduler() const override;
+
+ // enableAtomicExpandLoadLinked - True if we need to expand our atomics.
+ bool enableAtomicExpandLoadLinked() const override;
/// getInstrItins - Return the instruction itineraies based on subtarget
/// selection.
- const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
+ const InstrItineraryData *getInstrItineraryData() const {
+ return &InstrItins;
+ }
/// getStackAlignment - Returns the minimum alignment known to hold of the
/// stack frame on entry to the function and which must be maintained by every
/// GVIsIndirectSymbol - true if the GV will be accessed via an indirect
/// symbol.
bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const;
+
};
} // End llvm namespace