-//=====---- ARMSubtarget.h - Define Subtarget for the ARM -----*- C++ -*--====//
+//===-- ARMSubtarget.h - Define Subtarget for the ARM ----------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
class ARMSubtarget : public ARMGenSubtargetInfo {
protected:
enum ARMProcFamilyEnum {
- Others, CortexA8, CortexA9
+ Others, CortexA8, CortexA9, CortexA15, Swift
};
/// ARMProcFamily - ARM processor family: Cortex-A8, Cortex-A9, and others.
bool HasV6T2Ops;
bool HasV7Ops;
- /// HasVFPv2, HasVFPv3, HasNEON - Specify what floating point ISAs are
- /// supported.
+ /// HasVFPv2, HasVFPv3, HasVFPv4, HasNEON - Specify what
+ /// floating point ISAs are supported.
bool HasVFPv2;
bool HasVFPv3;
+ bool HasVFPv4;
bool HasNEON;
/// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been
/// determine if NEON should actually be used.
bool UseNEONForSinglePrecisionFP;
+ /// UseMulOps - True if non-microcoded fused integer multiply-add and
+ /// multiply-subtract instructions should be used.
+ bool UseMulOps;
+
/// SlowFPVMLx - If the VFP2 / NEON instructions are available, indicates
/// whether the FP VML[AS] instructions are slow (if so, don't use them).
bool SlowFPVMLx;
/// InThumbMode - True if compiling for Thumb, false for ARM.
bool InThumbMode;
- /// InNaClMode - True if targeting Native Client
- bool InNaClMode;
-
/// HasThumb2 - True if Thumb2 instructions are supported.
bool HasThumb2;
- /// IsMClass - True if the subtarget belongs to the 'M' profile of CPUs -
+ /// IsMClass - True if the subtarget belongs to the 'M' profile of CPUs -
/// v6m, v7m for example.
bool IsMClass;
/// imms (including global addresses).
bool UseMovt;
+ /// SupportsTailCall - True if the OS supports tail call. The dynamic linker
+ /// must be able to synthesize call stubs for interworking between ARM and
+ /// Thumb.
+ bool SupportsTailCall;
+
/// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF
/// only so far)
bool HasFP16;
/// HasHardwareDivide - True if subtarget supports [su]div
bool HasHardwareDivide;
+ /// HasHardwareDivideInARM - True if subtarget supports [su]div in ARM mode
+ bool HasHardwareDivideInARM;
+
/// HasT2ExtractPack - True if subtarget supports thumb2 extract/pack
/// instructions.
bool HasT2ExtractPack;
/// CPSR setting instruction.
bool AvoidCPSRPartialUpdate;
+ /// HasRAS - Some processors perform return stack prediction. CodeGen should
+ /// avoid issue "normal" call instructions to callees which do not return.
+ bool HasRAS;
+
/// HasMPExtension - True if the subtarget supports Multiprocessing
/// extension (ARMv7 only).
bool HasMPExtension;
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
+ /// SchedModel - Processor specific instruction costs.
+ const MCSchedModel *SchedModel;
+
/// Selected instruction itineraries (one entry per itinerary class.)
InstrItineraryData InstrItins;
bool isCortexA8() const { return ARMProcFamily == CortexA8; }
bool isCortexA9() const { return ARMProcFamily == CortexA9; }
+ bool isCortexA15() const { return ARMProcFamily == CortexA15; }
+ bool isSwift() const { return ARMProcFamily == Swift; }
+ bool isCortexM3() const { return CPUString == "cortex-m3"; }
+ bool isLikeA9() const { return isCortexA9() || isCortexA15(); }
bool hasARMOps() const { return !NoARM; }
bool hasVFP2() const { return HasVFPv2; }
bool hasVFP3() const { return HasVFPv3; }
+ bool hasVFP4() const { return HasVFPv4; }
bool hasNEON() const { return HasNEON; }
bool useNEONForSinglePrecisionFP() const {
return hasNEON() && UseNEONForSinglePrecisionFP; }
bool hasDivide() const { return HasHardwareDivide; }
+ bool hasDivideInARMMode() const { return HasHardwareDivideInARM; }
bool hasT2ExtractPack() const { return HasT2ExtractPack; }
bool hasDataBarrier() const { return HasDataBarrier; }
+ bool useMulOps() const { return UseMulOps; }
bool useFPVMLx() const { return !SlowFPVMLx; }
bool hasVMLxForwarding() const { return HasVMLxForwarding; }
bool isFPBrccSlow() const { return SlowFPBrcc; }
bool isFPOnlySP() const { return FPOnlySP; }
bool prefers32BitThumb() const { return Pref32BitThumb; }
bool avoidCPSRPartialUpdate() const { return AvoidCPSRPartialUpdate; }
+ bool hasRAS() const { return HasRAS; }
bool hasMPExtension() const { return HasMPExtension; }
bool hasThumb2DSP() const { return Thumb2DSP; }
const Triple &getTargetTriple() const { return TargetTriple; }
+ bool isTargetIOS() const { return TargetTriple.getOS() == Triple::IOS; }
bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); }
bool isTargetNaCl() const {
return TargetTriple.getOS() == Triple::NativeClient;
bool isR9Reserved() const { return IsR9Reserved; }
bool useMovt() const { return UseMovt && hasV6T2Ops(); }
+ bool supportsTailCall() const { return SupportsTailCall; }
bool allowsUnalignedMem() const { return AllowsUnalignedMem; }