-//=====---- X86Subtarget.h - Define Subtarget for the X86 -----*- C++ -*--====//
+//===-- X86Subtarget.h - Define Subtarget for the X86 ----------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
#ifndef X86SUBTARGET_H
#define X86SUBTARGET_H
+#include "llvm/CallingConv.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Target/TargetSubtargetInfo.h"
-#include "llvm/CallingConv.h"
#include <string>
#define GET_SUBTARGETINFO_HEADER
/// X86ProcFamily - X86 processor family: Intel Atom, and others
X86ProcFamilyEnum X86ProcFamily;
-
+
/// PICStyle - Which PIC style to use
///
PICStyles::Style PICStyle;
/// HasAES - Target has AES instructions
bool HasAES;
- /// HasCLMUL - Target has carry-less multiplication
- bool HasCLMUL;
+ /// HasPCLMUL - Target has carry-less multiplication
+ bool HasPCLMUL;
- /// HasFMA3 - Target has 3-operand fused multiply-add
- bool HasFMA3;
+ /// HasFMA - Target has 3-operand fused multiply-add
+ bool HasFMA;
/// HasFMA4 - Target has 4-operand fused multiply-add
bool HasFMA4;
/// this is true for most x86-64 chips, but not the first AMD chips.
bool HasCmpxchg16b;
+ /// UseLeaForSP - True if the LEA instruction should be used for adjusting
+ /// the stack pointer. This is an optimization for Intel Atom processors.
+ bool UseLeaForSP;
+
+ /// HasSlowDivide - True if smaller divides are significantly faster than
+ /// full divides and should be used when possible.
+ bool HasSlowDivide;
+
/// PostRAScheduler - True if using post-register-allocation scheduler.
bool PostRAScheduler;
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
-
+
/// Instruction itineraries for scheduling
InstrItineraryData InstrItins;
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
bool hasPOPCNT() const { return HasPOPCNT; }
bool hasAES() const { return HasAES; }
- bool hasCLMUL() const { return HasCLMUL; }
- bool hasFMA3() const { return HasFMA3; }
- bool hasFMA4() const { return HasFMA4; }
+ bool hasPCLMUL() const { return HasPCLMUL; }
+ bool hasFMA() const { return HasFMA; }
+ // FIXME: Favor FMA when both are enabled. Is this the right thing to do?
+ bool hasFMA4() const { return HasFMA4 && !HasFMA; }
bool hasXOP() const { return HasXOP; }
bool hasMOVBE() const { return HasMOVBE; }
bool hasRDRAND() const { return HasRDRAND; }
bool isUnalignedMemAccessFast() const { return IsUAMemFast; }
bool hasVectorUAMem() const { return HasVectorUAMem; }
bool hasCmpxchg16b() const { return HasCmpxchg16b; }
+ bool useLeaForSP() const { return UseLeaForSP; }
+ bool hasSlowDivide() const { return HasSlowDivide; }
bool isAtom() const { return X86ProcFamily == IntelAtom; }
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();
+ return (TargetTriple.getEnvironment() == Triple::ELF ||
+ TargetTriple.isOSBinFormatELF());
}
bool isTargetLinux() const { return TargetTriple.getOS() == Triple::Linux; }
bool isTargetNaCl() const {
}
bool isTargetNaCl32() const { return isTargetNaCl() && !is64Bit(); }
bool isTargetNaCl64() const { return isTargetNaCl() && is64Bit(); }
-
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();
- }
-
- /// isTargetCOFF - Return true if this is any COFF/Windows target variant.
+ bool isTargetCygMing() const { return TargetTriple.isOSCygMing(); }
bool isTargetCOFF() const {
- return isTargetMingw() || isTargetCygwin() || isTargetWindows();
+ return (TargetTriple.getEnvironment() != Triple::ELF &&
+ TargetTriple.isOSBinFormatCOFF());
}
+ bool isTargetEnvMacho() const { return TargetTriple.isEnvironmentMachO(); }
bool isTargetWin64() const {
// FIXME: x86_64-cygwin has not been released yet.
- return In64BitMode && (isTargetCygMing() || isTargetWindows());
- }
-
- bool isTargetEnvMacho() const {
- return isTargetDarwin() || (TargetTriple.getEnvironment() == Triple::MachO);
+ return In64BitMode && TargetTriple.isOSWindows();
}
bool isTargetWin32() const {
+ // FIXME: Cygwin is included for isTargetWin64 -- should it be included
+ // here too?
return !In64BitMode && (isTargetMingw() || isTargetWindows());
}
TargetSubtargetInfo::AntiDepBreakMode& Mode,
RegClassVector& CriticalPathRCs) const;
+ bool postRAScheduler() const { return PostRAScheduler; }
+
/// getInstrItins = Return the instruction itineraries based on the
/// subtarget selection.
const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }