Daniel Dunbar | 41b5b17 | 2010-05-20 17:49:16 +0000 | [diff] [blame] | 1 | //===-- cc1_main.cpp - Clang CC1 Compiler Frontend ------------------------===// |
Daniel Dunbar | 217acbf | 2009-11-19 07:37:51 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 10 | // This is the entry point to the clang -cc1 functionality, which implements the |
| 11 | // core compiler functionality along with a number of additional tools for |
| 12 | // demonstration and testing purposes. |
Daniel Dunbar | 217acbf | 2009-11-19 07:37:51 +0000 | [diff] [blame] | 13 | // |
| 14 | //===----------------------------------------------------------------------===// |
| 15 | |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 16 | #include "clang/Driver/Arg.h" |
| 17 | #include "clang/Driver/ArgList.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 18 | #include "clang/Driver/DriverDiagnostic.h" |
| 19 | #include "clang/Driver/OptTable.h" |
Chandler Carruth | f59edb9 | 2012-12-04 09:25:21 +0000 | [diff] [blame] | 20 | #include "clang/Driver/Options.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 21 | #include "clang/Frontend/CompilerInstance.h" |
| 22 | #include "clang/Frontend/CompilerInvocation.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 23 | #include "clang/Frontend/FrontendDiagnostic.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 24 | #include "clang/Frontend/TextDiagnosticBuffer.h" |
| 25 | #include "clang/Frontend/TextDiagnosticPrinter.h" |
Peter Collingbourne | 1b7255d | 2010-08-24 00:31:22 +0000 | [diff] [blame] | 26 | #include "clang/FrontendTool/Utils.h" |
Douglas Gregor | 95dd558 | 2010-03-30 17:33:59 +0000 | [diff] [blame] | 27 | #include "llvm/ADT/Statistic.h" |
Chandler Carruth | f59edb9 | 2012-12-04 09:25:21 +0000 | [diff] [blame] | 28 | #include "llvm/LinkAllPasses.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 29 | #include "llvm/Support/ErrorHandling.h" |
| 30 | #include "llvm/Support/ManagedStatic.h" |
Chad Rosier | b0afe83 | 2012-11-12 19:39:37 +0000 | [diff] [blame] | 31 | #include "llvm/Support/Signals.h" |
Evan Cheng | a6b4045 | 2011-08-24 18:09:14 +0000 | [diff] [blame] | 32 | #include "llvm/Support/TargetSelect.h" |
Chris Lattner | 30bc7e8 | 2010-03-30 05:39:52 +0000 | [diff] [blame] | 33 | #include "llvm/Support/Timer.h" |
Daniel Dunbar | 217acbf | 2009-11-19 07:37:51 +0000 | [diff] [blame] | 34 | #include "llvm/Support/raw_ostream.h" |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 35 | #include <cstdio> |
| 36 | using namespace clang; |
Daniel Dunbar | 217acbf | 2009-11-19 07:37:51 +0000 | [diff] [blame] | 37 | |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 38 | //===----------------------------------------------------------------------===// |
| 39 | // Main driver |
| 40 | //===----------------------------------------------------------------------===// |
| 41 | |
Chad Rosier | 9083628 | 2013-03-27 18:28:23 +0000 | [diff] [blame^] | 42 | static void LLVMErrorHandler(void *UserData, const std::string &Message, |
| 43 | bool GenCrashDiag) { |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 44 | DiagnosticsEngine &Diags = *static_cast<DiagnosticsEngine*>(UserData); |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 45 | |
| 46 | Diags.Report(diag::err_fe_error_backend) << Message; |
| 47 | |
Chad Rosier | b0afe83 | 2012-11-12 19:39:37 +0000 | [diff] [blame] | 48 | // Run the interrupt handlers to make sure any special cleanups get done, in |
| 49 | // particular that we remove files registered with RemoveFileOnSignal. |
| 50 | llvm::sys::RunInterruptHandlers(); |
| 51 | |
Chad Rosier | 5af8de8 | 2012-11-12 21:32:24 +0000 | [diff] [blame] | 52 | // We cannot recover from llvm errors. When reporting a fatal error, exit |
Chad Rosier | 9083628 | 2013-03-27 18:28:23 +0000 | [diff] [blame^] | 53 | // with status 70 to generate crash diagnostics. For BSD systems this is |
| 54 | // defined as an internal software error. Otherwise, exit with status 1. |
| 55 | exit(GenCrashDiag ? 70 : 1); |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 56 | } |
| 57 | |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 58 | int cc1_main(const char **ArgBegin, const char **ArgEnd, |
| 59 | const char *Argv0, void *MainAddr) { |
Dylan Noblesmith | 1e4c01b | 2012-02-13 12:32:21 +0000 | [diff] [blame] | 60 | OwningPtr<CompilerInstance> Clang(new CompilerInstance()); |
Dylan Noblesmith | c93dc78 | 2012-02-20 14:00:23 +0000 | [diff] [blame] | 61 | IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); |
Daniel Dunbar | 42e9f8e4 | 2010-02-16 01:54:47 +0000 | [diff] [blame] | 62 | |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 63 | // Initialize targets first, so that --version shows registered targets. |
| 64 | llvm::InitializeAllTargets(); |
Evan Cheng | d99d3e1 | 2011-07-22 21:59:11 +0000 | [diff] [blame] | 65 | llvm::InitializeAllTargetMCs(); |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 66 | llvm::InitializeAllAsmPrinters(); |
Chris Lattner | 01ae93f | 2010-04-05 23:33:20 +0000 | [diff] [blame] | 67 | llvm::InitializeAllAsmParsers(); |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 68 | |
| 69 | // Buffer diagnostics from argument parsing so that we can output them using a |
| 70 | // well formed diagnostic object. |
Douglas Gregor | 02c23eb | 2012-10-23 22:26:28 +0000 | [diff] [blame] | 71 | IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); |
Douglas Gregor | bdbb004 | 2010-08-18 22:29:43 +0000 | [diff] [blame] | 72 | TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer; |
Douglas Gregor | 02c23eb | 2012-10-23 22:26:28 +0000 | [diff] [blame] | 73 | DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagsBuffer); |
Dylan Noblesmith | 8fdb6de | 2011-12-23 03:05:38 +0000 | [diff] [blame] | 74 | bool Success; |
| 75 | Success = CompilerInvocation::CreateFromArgs(Clang->getInvocation(), |
| 76 | ArgBegin, ArgEnd, Diags); |
Daniel Dunbar | 1e69fe3 | 2009-12-13 03:45:58 +0000 | [diff] [blame] | 77 | |
| 78 | // Infer the builtin include path if unspecified. |
Daniel Dunbar | 42444fb | 2010-03-23 05:09:16 +0000 | [diff] [blame] | 79 | if (Clang->getHeaderSearchOpts().UseBuiltinIncludes && |
| 80 | Clang->getHeaderSearchOpts().ResourceDir.empty()) |
| 81 | Clang->getHeaderSearchOpts().ResourceDir = |
Daniel Dunbar | 8b9adfe | 2009-12-15 00:06:45 +0000 | [diff] [blame] | 82 | CompilerInvocation::GetResourcesPath(Argv0, MainAddr); |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 83 | |
Daniel Dunbar | a6bf47f | 2010-08-12 02:53:07 +0000 | [diff] [blame] | 84 | // Create the actual diagnostics engine. |
Sean Silva | d47afb9 | 2013-01-20 01:58:28 +0000 | [diff] [blame] | 85 | Clang->createDiagnostics(); |
Daniel Dunbar | a6bf47f | 2010-08-12 02:53:07 +0000 | [diff] [blame] | 86 | if (!Clang->hasDiagnostics()) |
| 87 | return 1; |
| 88 | |
| 89 | // Set an error handler, so that any LLVM backend diagnostics go through our |
| 90 | // error handler. |
| 91 | llvm::install_fatal_error_handler(LLVMErrorHandler, |
| 92 | static_cast<void*>(&Clang->getDiagnostics())); |
| 93 | |
Douglas Gregor | bdbb004 | 2010-08-18 22:29:43 +0000 | [diff] [blame] | 94 | DiagsBuffer->FlushDiagnostics(Clang->getDiagnostics()); |
Argyrios Kyrtzidis | ada4fa7 | 2012-01-25 20:00:43 +0000 | [diff] [blame] | 95 | if (!Success) |
| 96 | return 1; |
Daniel Dunbar | a6bf47f | 2010-08-12 02:53:07 +0000 | [diff] [blame] | 97 | |
Daniel Dunbar | 8eb2b01 | 2010-08-12 02:53:12 +0000 | [diff] [blame] | 98 | // Execute the frontend actions. |
Dylan Noblesmith | 8fdb6de | 2011-12-23 03:05:38 +0000 | [diff] [blame] | 99 | Success = ExecuteCompilerInvocation(Clang.get()); |
Daniel Dunbar | 42444fb | 2010-03-23 05:09:16 +0000 | [diff] [blame] | 100 | |
Chris Lattner | 30bc7e8 | 2010-03-30 05:39:52 +0000 | [diff] [blame] | 101 | // If any timers were active but haven't been destroyed yet, print their |
| 102 | // results now. This happens in -disable-free mode. |
| 103 | llvm::TimerGroup::printAll(llvm::errs()); |
Daniel Dunbar | f56a488 | 2010-08-02 15:31:28 +0000 | [diff] [blame] | 104 | |
Dan Gohman | 726578c | 2010-08-18 21:23:17 +0000 | [diff] [blame] | 105 | // Our error handler depends on the Diagnostics object, which we're |
| 106 | // potentially about to delete. Uninstall the handler now so that any |
| 107 | // later errors use the default handling behavior instead. |
| 108 | llvm::remove_fatal_error_handler(); |
| 109 | |
Daniel Dunbar | 42444fb | 2010-03-23 05:09:16 +0000 | [diff] [blame] | 110 | // When running with -disable-free, don't do any destruction or shutdown. |
| 111 | if (Clang->getFrontendOpts().DisableFree) { |
Benjamin Kramer | 77d2c5f | 2011-02-27 18:07:41 +0000 | [diff] [blame] | 112 | if (llvm::AreStatisticsEnabled() || Clang->getFrontendOpts().ShowStats) |
Douglas Gregor | 95dd558 | 2010-03-30 17:33:59 +0000 | [diff] [blame] | 113 | llvm::PrintStatistics(); |
Daniel Dunbar | 42444fb | 2010-03-23 05:09:16 +0000 | [diff] [blame] | 114 | Clang.take(); |
| 115 | return !Success; |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 116 | } |
| 117 | |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 118 | // Managed static deconstruction. Useful for making things like |
| 119 | // -time-passes usable. |
| 120 | llvm::llvm_shutdown(); |
| 121 | |
Daniel Dunbar | 0397af2 | 2010-01-13 00:48:06 +0000 | [diff] [blame] | 122 | return !Success; |
Daniel Dunbar | 2108577 | 2009-12-11 22:20:12 +0000 | [diff] [blame] | 123 | } |