class ARMSubtarget : public TargetSubtarget {
protected:
enum ARMArchEnum {
- V4T, V5T, V5TE, V6, V6T2, V7A
+ V4, V4T, V5T, V5TE, V6, V6T2, V7A
};
enum ARMFPEnum {
Thumb2
};
- /// ARMArchVersion - ARM architecture version: V4T (base), V5T, V5TE,
+ /// ARMArchVersion - ARM architecture version: V4, V4T (base), V5T, V5TE,
/// V6, V6T2, V7A.
ARMArchEnum ARMArchVersion;
/// determine if NEON should actually be used.
bool UseNEONForSinglePrecisionFP;
- /// HasBranchTargetBuffer - True if processor can predict indirect branches.
- bool HasBranchTargetBuffer;
+ /// 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;
/// imms (including global addresses).
bool UseMovt;
+ /// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF
+ /// only so far)
+ bool HasFP16;
+
/// 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 useVMLx() const {return hasVFP2() && !SlowVMLx; }
+
+ bool hasFP16() const { return HasFP16; }
bool isTargetDarwin() const { return TargetType == isDarwin; }
bool isTargetELF() const { return TargetType == isELF; }
bool isThumb2() const { return IsThumb && (ThumbMode == Thumb2); }
bool hasThumb2() const { return ThumbMode >= Thumb2; }
- bool hasBranchTargetBuffer() const { return HasBranchTargetBuffer; }
-
bool isR9Reserved() const { return IsR9Reserved; }
bool useMovt() const { return UseMovt && hasV6T2Ops(); }
/// 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