#define X86SUBTARGET_H
#include "llvm/Target/TargetSubtarget.h"
-
#include <string>
namespace llvm {
class GlobalValue;
class TargetMachine;
-namespace PICStyle {
+namespace PICStyles {
enum Style {
Stub, GOT, RIPRel, WinPIC, None
};
/// PICStyle - Which PIC style to use
///
- PICStyle::Style PICStyle;
+ PICStyles::Style PICStyle;
/// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, or
/// none supported.
/// HasX86_64 - True if the processor supports X86-64 instructions.
///
bool HasX86_64;
+
+ /// IsBTMemSlow - True if BT (bit test) of memory instructions are slow.
+ bool IsBTMemSlow;
/// DarwinVers - Nonzero if this is a darwin platform: the numeric
/// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
bool is64Bit() const { return Is64Bit; }
- PICStyle::Style getPICStyle() const { return PICStyle; }
- void setPICStyle(PICStyle::Style Style) { PICStyle = Style; }
+ PICStyles::Style getPICStyle() const { return PICStyle; }
+ void setPICStyle(PICStyles::Style Style) { PICStyle = Style; }
bool hasMMX() const { return X86SSELevel >= MMX; }
bool hasSSE1() const { return X86SSELevel >= SSE1; }
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
+ bool isBTMemSlow() const { return IsBTMemSlow; }
+
unsigned getAsmFlavor() const {
return AsmFlavor != Unset ? unsigned(AsmFlavor) : 0;
}
return std::string(p);
}
- bool isPICStyleSet() const { return PICStyle != PICStyle::None; }
- bool isPICStyleGOT() const { return PICStyle == PICStyle::GOT; }
- bool isPICStyleStub() const { return PICStyle == PICStyle::Stub; }
- bool isPICStyleRIPRel() const { return PICStyle == PICStyle::RIPRel; }
- bool isPICStyleWinPIC() const { return PICStyle == PICStyle:: WinPIC; }
+ bool isPICStyleSet() const { return PICStyle != PICStyles::None; }
+ bool isPICStyleGOT() const { return PICStyle == PICStyles::GOT; }
+ bool isPICStyleStub() const { return PICStyle == PICStyles::Stub; }
+ bool isPICStyleRIPRel() const { return PICStyle == PICStyles::RIPRel; }
+ bool isPICStyleWinPIC() const { return PICStyle == PICStyles:: WinPIC; }
/// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
unsigned getDarwinVers() const { return DarwinVers; }
bool GVRequiresExtraLoad(const GlobalValue* GV, const TargetMachine& TM,
bool isDirectCall) const;
+ /// True if accessing the GV requires a register. This is a superset of the
+ /// cases where GVRequiresExtraLoad is true. Some variations of PIC require
+ /// a register, but not an extra load.
+ bool GVRequiresRegister(const GlobalValue* GV, const TargetMachine& TM,
+ bool isDirectCall) const;
+
/// This function returns the name of a function which has an interface
/// like the non-standard bzero function, if such a function exists on
/// the current subtarget and it is considered prefereable over
/// memset with zero passed as the second argument. Otherwise it
/// returns null.
const char *getBZeroEntry() const;
+
+ /// getSpecialAddressLatency - For targets where it is beneficial to
+ /// backschedule instructions that compute addresses, return a value
+ /// indicating the number of scheduling cycles of backscheduling that
+ /// should be attempted.
+ unsigned getSpecialAddressLatency() const;
};
namespace X86 {