mirror of
https://github.com/capstone-engine/llvm-capstone.git
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fc51490baf
This patch moves the virtual file system form clang to llvm so it can be
used by more projects.
Concretely the patch:
- Moves VirtualFileSystem.{h|cpp} from clang/Basic to llvm/Support.
- Moves the corresponding unit test from clang to llvm.
- Moves the vfs namespace from clang::vfs to llvm::vfs.
- Formats the lines affected by this change, mostly this is the result of
the added llvm namespace.
RFC on the mailing list:
http://lists.llvm.org/pipermail/llvm-dev/2018-October/126657.html
Differential revision: https://reviews.llvm.org/D52783
llvm-svn: 344140
107 lines
4.0 KiB
C++
107 lines
4.0 KiB
C++
//===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Construct a compiler invocation object for command line driver arguments
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/Utils.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/Tool.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/Host.h"
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using namespace clang;
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using namespace llvm::opt;
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/// createInvocationFromCommandLine - Construct a compiler invocation object for
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/// a command line argument vector.
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///
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/// \return A CompilerInvocation, or 0 if none was built for the given
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/// argument vector.
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std::unique_ptr<CompilerInvocation> clang::createInvocationFromCommandLine(
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ArrayRef<const char *> ArgList, IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
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IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) {
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if (!Diags.get()) {
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// No diagnostics engine was provided, so create our own diagnostics object
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// with the default options.
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Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions);
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}
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SmallVector<const char *, 16> Args(ArgList.begin(), ArgList.end());
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// FIXME: Find a cleaner way to force the driver into restricted modes.
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Args.push_back("-fsyntax-only");
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// FIXME: We shouldn't have to pass in the path info.
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driver::Driver TheDriver(Args[0], llvm::sys::getDefaultTargetTriple(),
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*Diags, VFS);
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// Don't check that inputs exist, they may have been remapped.
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TheDriver.setCheckInputsExist(false);
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std::unique_ptr<driver::Compilation> C(TheDriver.BuildCompilation(Args));
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if (!C)
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return nullptr;
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// Just print the cc1 options if -### was present.
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if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) {
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C->getJobs().Print(llvm::errs(), "\n", true);
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return nullptr;
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}
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// We expect to get back exactly one command job, if we didn't something
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// failed. Offload compilation is an exception as it creates multiple jobs. If
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// that's the case, we proceed with the first job. If caller needs a
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// particular job, it should be controlled via options (e.g.
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// --cuda-{host|device}-only for CUDA) passed to the driver.
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const driver::JobList &Jobs = C->getJobs();
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bool OffloadCompilation = false;
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if (Jobs.size() > 1) {
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for (auto &A : C->getActions()){
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// On MacOSX real actions may end up being wrapped in BindArchAction
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if (isa<driver::BindArchAction>(A))
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A = *A->input_begin();
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if (isa<driver::OffloadAction>(A)) {
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OffloadCompilation = true;
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break;
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}
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}
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}
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if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) ||
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(Jobs.size() > 1 && !OffloadCompilation)) {
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SmallString<256> Msg;
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llvm::raw_svector_ostream OS(Msg);
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Jobs.Print(OS, "; ", true);
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Diags->Report(diag::err_fe_expected_compiler_job) << OS.str();
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return nullptr;
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}
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const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin());
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if (StringRef(Cmd.getCreator().getName()) != "clang") {
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Diags->Report(diag::err_fe_expected_clang_command);
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return nullptr;
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}
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const ArgStringList &CCArgs = Cmd.getArguments();
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auto CI = llvm::make_unique<CompilerInvocation>();
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if (!CompilerInvocation::CreateFromArgs(*CI,
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const_cast<const char **>(CCArgs.data()),
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const_cast<const char **>(CCArgs.data()) +
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CCArgs.size(),
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*Diags))
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return nullptr;
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return CI;
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}
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