namespace llvm {
class Module;
+class GlobalValue;
+class TargetMachine;
+
+namespace PICStyle {
+enum Style {
+ Stub, GOT, RIPRel, WinPIC, None
+};
+}
class X86Subtarget : public TargetSubtarget {
+public:
+ enum AsmWriterFlavorTy {
+ // Note: This numbering has to match the GCC assembler dialects for inline
+ // asm alternatives to work right.
+ ATT = 0, Intel = 1, Unset
+ };
protected:
enum X86SSEEnum {
- NoMMXSSE, MMX, SSE1, SSE2, SSE3
+ NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3
};
enum X863DNowEnum {
NoThreeDNow, ThreeDNow, ThreeDNowA
};
- /// X86SSELevel - MMX, SSE1, SSE2, SSE3, or none supported.
+ /// AsmFlavor - Which x86 asm dialect to use.
+ AsmWriterFlavorTy AsmFlavor;
+
+ /// PICStyle - Which PIC style to use
+ PICStyle::Style PICStyle;
+
+ /// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, or none supported.
X86SSEEnum X86SSELevel;
/// X863DNowLevel - 3DNow or 3DNow Athlon, or none supported.
X863DNowEnum X863DNowLevel;
- /// Is64Bit - True if the processor supports Em64T.
- bool Is64Bit;
+ /// HasX86_64 - True if the processor supports X86-64 instructions.
+ bool HasX86_64;
/// stackAlignment - The minimum alignment known to hold of the stack frame on
/// entry to the function and which must be maintained by every function.
/// Min. memset / memcpy size that is turned into rep/movs, rep/stos ops.
unsigned MinRepStrSizeThreshold;
+private:
+ /// Is64Bit - True if the processor supports 64-bit instructions and module
+ /// pointer size is 64 bit.
+ bool Is64Bit;
+
public:
enum {
- isELF, isCygwin, isDarwin, isWindows
+ isELF, isCygwin, isDarwin, isWindows, isMingw
} TargetType;
-
+
/// This constructor initializes the data members to match that
/// of the specified module.
///
- X86Subtarget(const Module &M, const std::string &FS);
+ X86Subtarget(const Module &M, const std::string &FS, bool is64Bit);
/// getStackAlignment - Returns the minimum alignment known to hold of the
/// stack frame on entry to the function and which must be maintained by every
/// instruction. This is only used if the src / dst alignment is not DWORD
/// aligned.
unsigned getMinRepStrSizeThreshold() const { return MinRepStrSizeThreshold; }
-
- /// ParseSubtargetFeatures - Parses features string setting specified
+
+ /// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
+ /// AutoDetectSubtargetFeatures - Auto-detect CPU features using CPUID
+ /// instruction.
+ void AutoDetectSubtargetFeatures();
+
bool is64Bit() const { return Is64Bit; }
+ PICStyle::Style getPICStyle() const { return PICStyle; }
+ void setPICStyle(PICStyle::Style Style) { PICStyle = Style; }
+
bool hasMMX() const { return X86SSELevel >= MMX; }
bool hasSSE1() const { return X86SSELevel >= SSE1; }
bool hasSSE2() const { return X86SSELevel >= SSE2; }
bool hasSSE3() const { return X86SSELevel >= SSE3; }
+ bool hasSSSE3() const { return X86SSELevel >= SSSE3; }
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
+ unsigned getAsmFlavor() const {
+ return AsmFlavor != Unset ? unsigned(AsmFlavor) : 0;
+ }
+
+ bool isFlavorAtt() const { return AsmFlavor == ATT; }
+ bool isFlavorIntel() const { return AsmFlavor == Intel; }
+
bool isTargetDarwin() const { return TargetType == isDarwin; }
+ bool isTargetELF() const { return TargetType == isELF; }
+ bool isTargetWindows() const { return TargetType == isWindows; }
+ bool isTargetMingw() const { return TargetType == isMingw; }
+ bool isTargetCygMing() const { return (TargetType == isMingw ||
+ TargetType == isCygwin); }
+ bool isTargetCygwin() const { return TargetType == isCygwin; }
+
+ 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; }
+
+ /// True if accessing the GV requires an extra load. For Windows, dllimported
+ /// symbols are indirect, loading the value at address GV rather then the
+ /// value of GV itself. This means that the GlobalAddress must be in the base
+ /// or index register of the address, not the GV offset field.
+ bool GVRequiresExtraLoad(const GlobalValue* GV, const TargetMachine& TM,
+ bool isDirectCall) const;
+
};
+
+namespace X86 {
+ /// GetCpuIDAndInfo - Execute the specified cpuid and return the 4 values in
+ /// the specified arguments. If we can't run cpuid on the host, return true.
+ bool GetCpuIDAndInfo(unsigned value, unsigned *rEAX, unsigned *rEBX,
+ unsigned *rECX, unsigned *rEDX);
+}
+
} // End llvm namespace
#endif