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//=====---- X86Subtarget.h - Define Subtarget for the X86 -----*- C++ -*--====//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Nate Begeman and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the X86 specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#ifndef X86SUBTARGET_H
#define X86SUBTARGET_H
#include "llvm/Target/TargetSubtarget.h"
#include <string>
namespace llvm {
class Module;
class X86Subtarget : public TargetSubtarget {
protected:
/// 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 stackAlignment;
/// Used by instruction selector
bool indirectExternAndWeakGlobals;
/// Arch. features used by isel.
bool Is64Bit;
bool HasMMX;
bool HasSSE;
bool HasSSE2;
bool HasSSE3;
bool Has3DNow;
bool Has3DNowA;
public:
enum {
isELF, isCygwin, isDarwin, isWindows
} TargetType;
/// This constructor initializes the data members to match that
/// of the specified module.
///
X86Subtarget(const Module &M, const std::string &FS);
/// getStackAlignment - Returns the minimum alignment known to hold of the
/// stack frame on entry to the function and which must be maintained by every
/// function for this subtarget.
unsigned getStackAlignment() const { return stackAlignment; }
/// Returns true if the instruction selector should treat global values
/// referencing external or weak symbols as indirect rather than direct
/// references.
bool getIndirectExternAndWeakGlobals() const {
return indirectExternAndWeakGlobals;
}
/// 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);
bool is64Bit() const { return Is64Bit; }
bool hasMMX() const { return HasMMX; }
bool hasSSE() const { return HasSSE; }
bool hasSSE2() const { return HasSSE2; }
bool hasSSE3() const { return HasSSE3; }
bool has3DNow() const { return Has3DNow; }
bool has3DNowA() const { return Has3DNowA; }
};
} // End llvm namespace
#endif
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