#include "llvm/Target/TargetInstrItineraries.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetSubtarget.h"
+#include "ARMBaseRegisterInfo.h"
#include <string>
namespace llvm {
class ARMSubtarget : public TargetSubtarget {
protected:
enum ARMArchEnum {
- V4T, V5T, V5TE, V6, V6T2, V7A
+ V4, V4T, V5T, V5TE, V6, V6T2, V7A, V7M
};
enum ARMFPEnum {
Thumb2
};
- /// ARMArchVersion - ARM architecture version: V4T (base), V5T, V5TE,
- /// V6, V6T2, V7A.
+ /// ARMArchVersion - ARM architecture version: V4, V4T (base), V5T, V5TE,
+ /// V6, V6T2, V7A, V7M.
ARMArchEnum ARMArchVersion;
/// ARMFPUType - Floating Point Unit type.
/// determine if NEON should actually be used.
bool UseNEONForSinglePrecisionFP;
+ /// SlowVMLx - If the VFP2 instructions are available, indicates whether
+ /// the VML[AS] instructions are slow (if so, don't use them).
+ bool SlowVMLx;
+
/// IsThumb - True if we are in thumb mode, false if in ARM mode.
bool IsThumb;
/// IsR9Reserved - True if R9 is a not available as general purpose register.
bool IsR9Reserved;
+ /// UseMovt - True if MOVT / MOVW pairs are used for materialization of 32-bit
+ /// imms (including global addresses).
+ bool UseMovt;
+
+ /// 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;
+
+ /// HasT2ExtractPack - True if subtarget supports thumb2 extract/pack
+ /// instructions.
+ bool HasT2ExtractPack;
+
/// stackAlignment - The minimum alignment known to hold of the stack frame on
/// entry to the function and which must be maintained by every function.
unsigned stackAlignment;
/// 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 Thumb.
- // Change this once Thumb ldmia / stmia support is added.
- return isThumb() ? 0 : 64;
+ // 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;
}
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
bool hasNEON() const { return ARMFPUType >= NEON; }
bool useNEONForSinglePrecisionFP() const {
return hasNEON() && UseNEONForSinglePrecisionFP; }
+ bool hasDivide() const { return HasHardwareDivide; }
+ bool hasT2ExtractPack() const { return HasT2ExtractPack; }
+ bool useVMLx() const {return hasVFP2() && !SlowVMLx; }
+
+ bool hasFP16() const { return HasFP16; }
bool isTargetDarwin() const { return TargetType == isDarwin; }
bool isTargetELF() const { return TargetType == isELF; }
bool isR9Reserved() const { return IsR9Reserved; }
+ bool useMovt() const { return UseMovt && hasV6T2Ops(); }
+
const std::string & getCPUString() const { return CPUString; }
-
- /// enablePostRAScheduler - True at 'More' optimization except
- /// for Thumb1.
+
+ /// enablePostRAScheduler - True at 'More' optimization.
bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
- TargetSubtarget::AntiDepBreakMode& mode) const {
- mode = TargetSubtarget::ANTIDEP_NONE;
- return PostRAScheduler && OptLevel >= CodeGenOpt::Default;
- }
+ TargetSubtarget::AntiDepBreakMode& Mode,
+ RegClassVector& CriticalPathRCs) const;
/// getInstrItins - Return the instruction itineraies based on subtarget
/// selection.
/// GVIsIndirectSymbol - true if the GV will be accessed via an indirect
/// symbol.
- bool GVIsIndirectSymbol(GlobalValue *GV, Reloc::Model RelocM) const;
+ bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const;
};
} // End llvm namespace