#ifndef X86SUBTARGET_H
#define X86SUBTARGET_H
+#include "llvm/ADT/Triple.h"
#include "llvm/Target/TargetSubtarget.h"
-
+#include "llvm/CallingConv.h"
#include <string>
namespace llvm {
-class Module;
class GlobalValue;
class TargetMachine;
-
-namespace PICStyle {
+
+/// 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
NoThreeDNow, ThreeDNow, ThreeDNowA
};
- /// AsmFlavor - Which x86 asm dialect to use.
- ///
- AsmWriterFlavorTy AsmFlavor;
-
/// PICStyle - Which PIC style to use
///
- PICStyle::Style PICStyle;
-
+ PICStyles::Style PICStyle;
+
/// X86SSELevel - MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, or
/// none supported.
X86SSEEnum X86SSELevel;
///
X863DNowEnum X863DNowLevel;
+ /// HasCMov - True if this processor has conditional move instructions
+ /// (generally pentium pro+).
+ bool HasCMov;
+
/// HasX86_64 - True if the processor supports X86-64 instructions.
///
bool HasX86_64;
-
- /// 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.
- /// isLinux - true if this is a "linux" platform.
- bool IsLinux;
+ /// HasPOPCNT - True if the processor supports POPCNT.
+ bool HasPOPCNT;
+
+ /// HasSSE4A - True if the processor supports SSE4A instructions.
+ bool HasSSE4A;
+
+ /// HasAVX - Target has AVX instructions
+ bool HasAVX;
+
+ /// HasAES - Target has AES instructions
+ bool HasAES;
+
+ /// HasCLMUL - Target has carry-less multiplication
+ bool HasCLMUL;
+
+ /// 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;
+
+ /// IsUAMemFast - True if unaligned memory access is fast.
+ bool IsUAMemFast;
+
+ /// HasVectorUAMem - True if SIMD operations can have unaligned memory
+ /// operands. This may require setting a feature bit in the processor.
+ bool HasVectorUAMem;
/// 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 MaxInlineSizeThreshold;
+ /// TargetTriple - What processor and OS we're targeting.
+ Triple TargetTriple;
+
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;
public:
- enum {
- isELF, isCygwin, isDarwin, isWindows, isMingw
- } 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
/// 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);
+ std::string ParseSubtargetFeatures(const std::string &FS,
+ const std::string &CPU);
/// AutoDetectSubtargetFeatures - Auto-detect CPU features using CPUID
/// instruction.
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 hasCMov() const { return HasCMov; }
bool hasMMX() const { return X86SSELevel >= MMX; }
bool hasSSE1() const { return X86SSELevel >= SSE1; }
bool hasSSE2() const { return X86SSELevel >= SSE2; }
bool hasSSSE3() const { return X86SSELevel >= SSSE3; }
bool hasSSE41() const { return X86SSELevel >= SSE41; }
bool hasSSE42() const { return X86SSELevel >= SSE42; }
+ bool hasSSE4A() const { return HasSSE4A; }
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
-
- unsigned getAsmFlavor() const {
- return AsmFlavor != Unset ? unsigned(AsmFlavor) : 0;
+ bool hasPOPCNT() const { return HasPOPCNT; }
+ bool hasAVX() const { return HasAVX; }
+ bool hasXMM() const { return hasSSE1() || hasAVX(); }
+ bool hasXMMInt() const { return hasSSE2() || hasAVX(); }
+ bool hasAES() const { return HasAES; }
+ bool hasCLMUL() const { return HasCLMUL; }
+ bool hasFMA3() const { return HasFMA3; }
+ bool hasFMA4() const { return HasFMA4; }
+ bool isBTMemSlow() const { return IsBTMemSlow; }
+ bool isUnalignedMemAccessFast() const { return IsUAMemFast; }
+ bool hasVectorUAMem() const { return HasVectorUAMem; }
+
+ const Triple &getTargetTriple() const { return TargetTriple; }
+
+ bool isTargetDarwin() const { return TargetTriple.getOS() == Triple::Darwin; }
+ bool isTargetFreeBSD() const { return TargetTriple.getOS() == Triple::FreeBSD; }
+ bool isTargetSolaris() const { return TargetTriple.getOS() == Triple::Solaris; }
+
+ // ELF is a reasonably sane default and the only other X86 targets we
+ // support are Darwin and Windows. Just use "not those".
+ bool isTargetELF() const {
+ return !isTargetDarwin() && !isTargetWindows() && !isTargetCygMing();
}
+ bool isTargetLinux() const { return TargetTriple.getOS() == Triple::Linux; }
- bool isFlavorAtt() const { return AsmFlavor == ATT; }
- bool isFlavorIntel() const { return AsmFlavor == Intel; }
+ bool isTargetWindows() const { return TargetTriple.getOS() == Triple::Win32; }
+ bool isTargetMingw() const { return TargetTriple.getOS() == Triple::MinGW32; }
+ bool isTargetCygwin() const { return TargetTriple.getOS() == Triple::Cygwin; }
+ bool isTargetCygMing() const {
+ return isTargetMingw() || isTargetCygwin();
+ }
- bool isTargetDarwin() const { return TargetType == isDarwin; }
- bool isTargetELF() const {
- return TargetType == isELF;
+ /// isTargetCOFF - Return true if this is any COFF/Windows target variant.
+ bool isTargetCOFF() const {
+ return isTargetMingw() || isTargetCygwin() || isTargetWindows();
}
- 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 isTargetWin64() const {
- return (Is64Bit && (TargetType == isMingw || TargetType == isWindows));
+ return Is64Bit && (isTargetMingw() || isTargetWindows());
+ }
+
+ bool isTargetEnvMacho() const {
+ return isTargetDarwin() || (TargetTriple.getEnvironment() == Triple::MachO);
+ }
+
+ bool isTargetWin32() const {
+ return !Is64Bit && (isTargetMingw() || isTargetWindows());
}
- 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";
- }
- return std::string(p);
+ bool isPICStyleSet() const { return PICStyle != PICStyles::None; }
+ bool isPICStyleGOT() const { return PICStyle == PICStyles::GOT; }
+ bool isPICStyleRIPRel() const { return PICStyle == PICStyles::RIPRel; }
+
+ bool isPICStyleStubPIC() const {
+ return PICStyle == PICStyles::StubPIC;
+ }
+
+ bool isPICStyleStubNoDynamic() const {
+ return PICStyle == PICStyles::StubDynamicNoPIC;
}
+ bool isPICStyleStubAny() const {
+ return PICStyle == PICStyles::StubDynamicNoPIC ||
+ PICStyle == PICStyles::StubPIC; }
+
+ /// 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;
+
+ /// ClassifyBlockAddressReference - Classify a blockaddress reference for the
+ /// current subtarget according to how we should reference it in a non-pcrel
+ /// context.
+ unsigned char ClassifyBlockAddressReference() const;
- 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; }
-
- /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
- 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;
+ /// IsLegalToCallImmediateAddr - Return true if the subtarget allows calls
+ /// to immediate address.
+ bool IsLegalToCallImmediateAddr(const TargetMachine &TM) 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
/// memset with zero passed as the second argument. Otherwise it
/// returns null.
const char *getBZeroEntry() 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);
-}
+ /// 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;
+
+ /// IsCalleePop - Test whether a function should pop its own arguments.
+ bool IsCalleePop(bool isVarArg, CallingConv::ID CallConv) const;
+};
} // End llvm namespace
projects / oota-llvm.git / blobdiff