X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FX86%2FX86Subtarget.h;h=f5ca10af53981bedf781604975e2450e9b1493fc;hb=ec2e4679fd06c1a31f04f2f312f87d924ce43957;hp=694b0ebac86768386a5147789cb32af4d415308b;hpb=aecaa1f143b21894ab61616bdbf67e8f450dfc7a;p=oota-llvm.git diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h index 694b0ebac86..f5ca10af539 100644 --- a/lib/Target/X86/X86Subtarget.h +++ b/lib/Target/X86/X86Subtarget.h @@ -18,23 +18,22 @@ #include namespace llvm { -class Module; class GlobalValue; class TargetMachine; +/// PICStyles - The X86 backend supports a number of different styles of PIC. +/// namespace PICStyles { enum Style { - Stub, GOT, RIPRel, WinPIC, None + StubPIC, // Used on i386-darwin in -fPIC mode. + StubDynamicNoPIC, // Used on i386-darwin in -mdynamic-no-pic mode. + GOT, // Used on many 32-bit unices in -fPIC mode. + RIPRel, // Used on X86-64 when not in -static mode. + None // Set when in -static mode (not PIC or DynamicNoPIC mode). }; } 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, SSSE3, SSE41, SSE42 @@ -44,10 +43,6 @@ protected: NoThreeDNow, ThreeDNow, ThreeDNowA }; - /// AsmFlavor - Which x86 asm dialect to use. - /// - AsmWriterFlavorTy AsmFlavor; - /// PICStyle - Which PIC style to use /// PICStyles::Style PICStyle; @@ -64,12 +59,21 @@ protected: /// bool HasX86_64; - /// IsBTMemSlow - True if BT (bit test) of memory instructions are slow. - bool IsBTMemSlow; - /// HasSSE4A - True if the processor supports SSE4A instructions. bool HasSSE4A; + /// HasAVX - Target has AVX instructions + bool HasAVX; + + /// HasFMA3 - Target has 3-operand fused multiply-add + bool HasFMA3; + + /// HasFMA4 - Target has 4-operand fused multiply-add + bool HasFMA4; + + /// 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. unsigned char DarwinVers; // Is any darwin-x86 platform. @@ -86,7 +90,7 @@ protected: unsigned MaxInlineSizeThreshold; private: - /// Is64Bit - True if the processor supports 64-bit instructions and module + /// Is64Bit - True if the processor supports 64-bit instructions and /// pointer size is 64 bit. bool Is64Bit; @@ -96,9 +100,9 @@ public: } TargetType; /// This constructor initializes the data members to match that - /// of the specified module. + /// of the specified triple. /// - X86Subtarget(const Module &M, const std::string &FS, bool is64Bit); + X86Subtarget(const std::string &TT, 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 @@ -133,66 +137,62 @@ public: bool hasSSE4A() const { return HasSSE4A; } bool has3DNow() const { return X863DNowLevel >= ThreeDNow; } bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; } - + bool hasAVX() const { return HasAVX; } + bool hasFMA3() const { return HasFMA3; } + bool hasFMA4() const { return HasFMA4; } bool isBTMemSlow() const { return IsBTMemSlow; } - 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 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 isTargetCygMing() const { + return TargetType == isMingw || TargetType == isCygwin; + } bool isTargetCygwin() const { return TargetType == isCygwin; } bool isTargetWin64() const { - return (Is64Bit && (TargetType == isMingw || TargetType == isWindows)); + return Is64Bit && (TargetType == isMingw || TargetType == isWindows); } std::string getDataLayout() const { const char *p; if (is64Bit()) p = "e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128"; - else { - if (isTargetDarwin()) - p = "e-p:32:32-f64:32:64-i64:32:64-f80:128:128"; - else - p = "e-p:32:32-f64:32:64-i64:32:64-f80:32:32"; - } + else if (isTargetDarwin()) + p = "e-p:32:32-f64:32:64-i64:32:64-f80:128:128"; + else + p = "e-p:32:32-f64:32:64-i64:32:64-f80:32:32"; return std::string(p); } 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; } + + bool isPICStyleStubPIC() const { + return PICStyle == PICStyles::StubPIC; + } + + bool isPICStyleStubNoDynamic() const { + return PICStyle == PICStyles::StubDynamicNoPIC; + } + bool isPICStyleStubAny() const { + return PICStyle == PICStyles::StubDynamicNoPIC || + PICStyle == PICStyles::StubPIC; } - /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard. + /// getDarwinVers - Return the darwin version number, 8 = Tiger, 9 = Leopard, + /// 10 = Snow Leopard, etc. unsigned getDarwinVers() const { return DarwinVers; } /// isLinux - Return true if the target is "Linux". bool isLinux() const { return IsLinux; } - /// 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; - - /// 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; + + /// ClassifyGlobalReference - Classify a global variable reference for the + /// current subtarget according to how we should reference it in a non-pcrel + /// context. + unsigned char ClassifyGlobalReference(const GlobalValue *GV, + const TargetMachine &TM)const; /// IsLegalToCallImmediateAddr - Return true if the subtarget allows calls /// to immediate address.