| 1 | //===-- fc1_main.cpp - Flang FC1 Compiler Frontend ------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This is the entry point to the flang -fc1 functionality, which implements the |
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| 10 | // core compiler functionality along with a number of additional tools for |
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| 11 | // demonstration and testing purposes. |
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| 12 | // |
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| 13 | //===----------------------------------------------------------------------===// |
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| 14 | // |
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| 15 | // Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/ |
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| 16 | // |
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| 17 | //===----------------------------------------------------------------------===// |
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| 18 | |
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| 19 | #include "flang/Frontend/CompilerInstance.h" |
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| 20 | #include "flang/Frontend/CompilerInvocation.h" |
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| 21 | #include "flang/Frontend/TextDiagnosticBuffer.h" |
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| 22 | #include "flang/FrontendTool/Utils.h" |
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| 23 | #include "clang/Driver/DriverDiagnostic.h" |
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| 24 | #include "llvm/Option/Arg.h" |
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| 25 | #include "llvm/Option/ArgList.h" |
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| 26 | #include "llvm/Option/OptTable.h" |
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| 27 | #include "llvm/Support/TargetSelect.h" |
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| 28 | |
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| 29 | #include <cstdio> |
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| 30 | |
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| 31 | using namespace Fortran::frontend; |
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| 32 | |
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| 33 | int fc1_main(llvm::ArrayRef<const char *> argv, const char *argv0) { |
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| 34 | // Create CompilerInstance |
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| 35 | std::unique_ptr<CompilerInstance> flang(new CompilerInstance()); |
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| 36 | |
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| 37 | // Create DiagnosticsEngine for the frontend driver |
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| 38 | flang->createDiagnostics(); |
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| 39 | if (!flang->hasDiagnostics()) |
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| 40 | return 1; |
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| 41 | |
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| 42 | // We will buffer diagnostics from argument parsing so that we can output |
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| 43 | // them using a well formed diagnostic object. |
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| 44 | TextDiagnosticBuffer *diagsBuffer = new TextDiagnosticBuffer; |
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| 45 | |
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| 46 | // Create CompilerInvocation - use a dedicated instance of DiagnosticsEngine |
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| 47 | // for parsing the arguments |
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| 48 | llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs> diagID( |
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| 49 | new clang::DiagnosticIDs()); |
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| 50 | llvm::IntrusiveRefCntPtr<clang::DiagnosticOptions> diagOpts = |
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| 51 | new clang::DiagnosticOptions(); |
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| 52 | clang::DiagnosticsEngine diags(diagID, &*diagOpts, diagsBuffer); |
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| 53 | bool success = CompilerInvocation::createFromArgs(flang->getInvocation(), |
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| 54 | argv, diags, argv0); |
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| 55 | |
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| 56 | // Initialize targets first, so that --version shows registered targets. |
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| 57 | llvm::InitializeAllTargets(); |
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| 58 | llvm::InitializeAllTargetMCs(); |
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| 59 | llvm::InitializeAllAsmPrinters(); |
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| 60 | |
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| 61 | diagsBuffer->flushDiagnostics(flang->getDiagnostics()); |
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| 62 | |
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| 63 | if (!success) |
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| 64 | return 1; |
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| 65 | |
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| 66 | // Execute the frontend actions. |
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| 67 | success = executeCompilerInvocation(flang.get()); |
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| 68 | |
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| 69 | // Delete output files to free Compiler Instance |
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| 70 | flang->clearOutputFiles(/*EraseFiles=*/false); |
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| 71 | |
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| 72 | return !success; |
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| 73 | } |
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| 74 | |
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