93 lines
3.5 KiB
C++
93 lines
3.5 KiB
C++
//===- llvm/TargetParser/Host.h - Host machine detection -------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Methods for querying the nature of the host machine.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGETPARSER_HOST_H
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#define LLVM_TARGETPARSER_HOST_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/Support/Compiler.h"
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#include <string>
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namespace llvm {
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class MallocAllocator;
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class StringRef;
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template <typename ValueTy, typename AllocatorTy> class StringMap;
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class raw_ostream;
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namespace sys {
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/// getDefaultTargetTriple() - Return the default target triple the compiler
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/// has been configured to produce code for.
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///
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/// The target triple is a string in the format of:
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/// CPU_TYPE-VENDOR-OPERATING_SYSTEM
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/// or
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/// CPU_TYPE-VENDOR-KERNEL-OPERATING_SYSTEM
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LLVM_ABI std::string getDefaultTargetTriple();
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/// getProcessTriple() - Return an appropriate target triple for generating
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/// code to be loaded into the current process, e.g. when using the JIT.
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LLVM_ABI std::string getProcessTriple();
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/// getHostCPUName - Get the LLVM name for the host CPU. The particular format
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/// of the name is target dependent, and suitable for passing as -mcpu to the
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/// target which matches the host.
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///
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/// \return - The host CPU name, or empty if the CPU could not be determined.
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LLVM_ABI StringRef getHostCPUName();
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/// getHostCPUFeatures - Get the LLVM names for the host CPU features.
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/// The particular format of the names are target dependent, and suitable for
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/// passing as -mattr to the target which matches the host.
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///
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/// \return - A string map mapping feature names to either true (if enabled)
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/// or false (if disabled). This routine makes no guarantees about exactly
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/// which features may appear in this map, except that they are all valid LLVM
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/// feature names. The map can be empty, for example if feature detection
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/// fails.
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LLVM_ABI StringMap<bool, MallocAllocator> getHostCPUFeatures();
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/// This is a function compatible with cl::AddExtraVersionPrinter, which adds
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/// info about the current target triple and detected CPU.
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LLVM_ABI void printDefaultTargetAndDetectedCPU(raw_ostream &OS);
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namespace detail {
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/// Helper functions to extract HostCPUName from /proc/cpuinfo on linux.
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LLVM_ABI StringRef getHostCPUNameForPowerPC(StringRef ProcCpuinfoContent);
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LLVM_ABI StringRef getHostCPUNameForARM(StringRef ProcCpuinfoContent);
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LLVM_ABI StringRef getHostCPUNameForARM(uint64_t PrimaryCpuInfo,
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ArrayRef<uint64_t> UniqueCpuInfos);
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LLVM_ABI StringRef getHostCPUNameForS390x(StringRef ProcCpuinfoContent);
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LLVM_ABI StringRef getHostCPUNameForRISCV(StringRef ProcCpuinfoContent);
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LLVM_ABI StringRef getHostCPUNameForSPARC(StringRef ProcCpuinfoContent);
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LLVM_ABI StringRef getHostCPUNameForBPF();
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/// Helper functions to extract CPU details from CPUID on x86.
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namespace x86 {
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enum class VendorSignatures {
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UNKNOWN,
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GENUINE_INTEL,
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AUTHENTIC_AMD,
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HYGON_GENUINE,
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};
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/// Returns the host CPU's vendor.
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/// MaxLeaf: if a non-nullptr pointer is specified, the EAX value will be
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/// assigned to its pointee.
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LLVM_ABI VendorSignatures getVendorSignature(unsigned *MaxLeaf = nullptr);
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} // namespace x86
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} // namespace detail
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} // namespace sys
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} // namespace llvm
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#endif
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