mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-16 11:30:51 +00:00
7ccced634a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26273 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
//=====---- 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:
|
|
enum X86SSEEnum {
|
|
NoMMXSSE, MMX, SSE1, SSE2, SSE3
|
|
};
|
|
|
|
enum X863DNowEnum {
|
|
NoThreeDNow, ThreeDNow, ThreeDNowA
|
|
};
|
|
|
|
/// X86SSELevel - MMX, SSE1, SSE2, SSE3, or none supported.
|
|
X86SSEEnum X86SSELevel;
|
|
|
|
/// X863DNowLevel - 3DNow or 3DNow Athlon, or none supported.
|
|
X863DNowEnum X863DNowLevel;
|
|
|
|
/// Is64Bit - True if the processor supports Em64T.
|
|
bool Is64Bit;
|
|
|
|
/// 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;
|
|
|
|
/// Min. memset / memcpy size that is turned into rep/movs, rep/stos ops.
|
|
unsigned MinRepStrSizeThreshold;
|
|
|
|
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; }
|
|
|
|
/// getMinRepStrSizeThreshold - Returns the minimum memset / memcpy size
|
|
/// required to turn the operation into a X86 rep/movs or rep/stos
|
|
/// 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
|
|
/// 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 X86SSELevel >= MMX; }
|
|
bool hasSSE1() const { return X86SSELevel >= SSE1; }
|
|
bool hasSSE2() const { return X86SSELevel >= SSE2; }
|
|
bool hasSSE3() const { return X86SSELevel >= SSE3; }
|
|
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
|
|
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
|
|
|
|
bool isTargetDarwin() const { return TargetType == isDarwin; }
|
|
};
|
|
} // End llvm namespace
|
|
|
|
#endif
|