clang  10.0.0git
SystemZ.cpp
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1 //===--- SystemZ.cpp - SystemZ Helpers for Tools ----------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "SystemZ.h"
10 #include "clang/Driver/Options.h"
11 #include "llvm/Option/ArgList.h"
12 #include "llvm/Support/Host.h"
13 
14 using namespace clang::driver;
15 using namespace clang::driver::tools;
16 using namespace clang;
17 using namespace llvm::opt;
18 
19 std::string systemz::getSystemZTargetCPU(const ArgList &Args) {
20  if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ)) {
21  llvm::StringRef CPUName = A->getValue();
22 
23  if (CPUName == "native") {
24  std::string CPU = llvm::sys::getHostCPUName();
25  if (!CPU.empty() && CPU != "generic")
26  return CPU;
27  else
28  return "";
29  }
30 
31  return CPUName;
32  }
33  return "z10";
34 }
35 
36 void systemz::getSystemZTargetFeatures(const ArgList &Args,
37  std::vector<llvm::StringRef> &Features) {
38  // -m(no-)htm overrides use of the transactional-execution facility.
39  if (Arg *A = Args.getLastArg(options::OPT_mhtm, options::OPT_mno_htm)) {
40  if (A->getOption().matches(options::OPT_mhtm))
41  Features.push_back("+transactional-execution");
42  else
43  Features.push_back("-transactional-execution");
44  }
45  // -m(no-)vx overrides use of the vector facility.
46  if (Arg *A = Args.getLastArg(options::OPT_mvx, options::OPT_mno_vx)) {
47  if (A->getOption().matches(options::OPT_mvx))
48  Features.push_back("+vector");
49  else
50  Features.push_back("-vector");
51  }
52 }
void getSystemZTargetFeatures(const llvm::opt::ArgList &Args, std::vector< llvm::StringRef > &Features)
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args)
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