1 //===- llvm/Support/Host.h - Host machine characteristics --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Methods for querying the nature of the host machine.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_SYSTEM_HOST_H
15 #define LLVM_SYSTEM_HOST_H
17 #include "llvm/ADT/StringMap.h"
23 inline bool isLittleEndianHost() {
32 inline bool isBigEndianHost() {
33 return !isLittleEndianHost();
36 /// getHostTriple() - Return the target triple of the running
39 /// The target triple is a string in the format of:
40 /// CPU_TYPE-VENDOR-OPERATING_SYSTEM
42 /// CPU_TYPE-VENDOR-KERNEL-OPERATING_SYSTEM
43 std::string getHostTriple();
45 /// getHostCPUName - Get the LLVM name for the host CPU. The particular format
46 /// of the name is target dependent, and suitable for passing as -mcpu to the
47 /// target which matches the host.
49 /// \return - The host CPU name, or empty if the CPU could not be determined.
50 std::string getHostCPUName();
52 /// getHostCPUFeatures - Get the LLVM names for the host CPU features.
53 /// The particular format of the names are target dependent, and suitable for
54 /// passing as -mattr to the target which matches the host.
56 /// \param Features - A string mapping feature names to either
57 /// true (if enabled) or false (if disabled). This routine makes no guarantees
58 /// about exactly which features may appear in this map, except that they are
59 /// all valid LLVM feature names.
61 /// \return - True on success.
62 bool getHostCPUFeatures(StringMap<bool> &Features);