aboutsummaryrefslogtreecommitdiff
path: root/lib/Frontend/CodeGenAction.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/Frontend/CodeGenAction.cpp')
-rw-r--r--lib/Frontend/CodeGenAction.cpp349
1 files changed, 0 insertions, 349 deletions
diff --git a/lib/Frontend/CodeGenAction.cpp b/lib/Frontend/CodeGenAction.cpp
deleted file mode 100644
index dce9f3d216..0000000000
--- a/lib/Frontend/CodeGenAction.cpp
+++ /dev/null
@@ -1,349 +0,0 @@
-//===--- CodeGenAction.cpp - LLVM Code Generation Frontend Action ---------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Frontend/CodeGenAction.h"
-#include "clang/Basic/SourceManager.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/AST/ASTConsumer.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/DeclGroup.h"
-#include "clang/CodeGen/ModuleBuilder.h"
-#include "clang/Frontend/ASTConsumers.h"
-#include "clang/Frontend/BackendUtil.h"
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Frontend/FrontendDiagnostic.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/Support/IRReader.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/Timer.h"
-using namespace clang;
-using namespace llvm;
-
-namespace {
- class BackendConsumer : public ASTConsumer {
- Diagnostic &Diags;
- BackendAction Action;
- const CodeGenOptions &CodeGenOpts;
- const TargetOptions &TargetOpts;
- llvm::raw_ostream *AsmOutStream;
- ASTContext *Context;
-
- Timer LLVMIRGeneration;
-
- llvm::OwningPtr<CodeGenerator> Gen;
-
- llvm::OwningPtr<llvm::Module> TheModule;
-
- public:
- BackendConsumer(BackendAction action, Diagnostic &_Diags,
- const CodeGenOptions &compopts,
- const TargetOptions &targetopts, bool TimePasses,
- const std::string &infile, llvm::raw_ostream *OS,
- LLVMContext &C) :
- Diags(_Diags),
- Action(action),
- CodeGenOpts(compopts),
- TargetOpts(targetopts),
- AsmOutStream(OS),
- LLVMIRGeneration("LLVM IR Generation Time"),
- Gen(CreateLLVMCodeGen(Diags, infile, compopts, C)) {
- llvm::TimePassesIsEnabled = TimePasses;
- }
-
- llvm::Module *takeModule() { return TheModule.take(); }
-
- virtual void Initialize(ASTContext &Ctx) {
- Context = &Ctx;
-
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.startTimer();
-
- Gen->Initialize(Ctx);
-
- TheModule.reset(Gen->GetModule());
-
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.stopTimer();
- }
-
- virtual void HandleTopLevelDecl(DeclGroupRef D) {
- PrettyStackTraceDecl CrashInfo(*D.begin(), SourceLocation(),
- Context->getSourceManager(),
- "LLVM IR generation of declaration");
-
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.startTimer();
-
- Gen->HandleTopLevelDecl(D);
-
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.stopTimer();
- }
-
- virtual void HandleTranslationUnit(ASTContext &C) {
- {
- PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.startTimer();
-
- Gen->HandleTranslationUnit(C);
-
- if (llvm::TimePassesIsEnabled)
- LLVMIRGeneration.stopTimer();
- }
-
- // Silently ignore if we weren't initialized for some reason.
- if (!TheModule)
- return;
-
- // Make sure IR generation is happy with the module. This is released by
- // the module provider.
- Module *M = Gen->ReleaseModule();
- if (!M) {
- // The module has been released by IR gen on failures, do not double
- // free.
- TheModule.take();
- return;
- }
-
- assert(TheModule.get() == M &&
- "Unexpected module change during IR generation");
-
- // Install an inline asm handler so that diagnostics get printed through
- // our diagnostics hooks.
- LLVMContext &Ctx = TheModule->getContext();
- void *OldHandler = Ctx.getInlineAsmDiagnosticHandler();
- void *OldContext = Ctx.getInlineAsmDiagnosticContext();
- Ctx.setInlineAsmDiagnosticHandler((void*)(intptr_t)InlineAsmDiagHandler,
- this);
-
- EmitBackendOutput(Diags, CodeGenOpts, TargetOpts,
- TheModule.get(), Action, AsmOutStream);
-
- Ctx.setInlineAsmDiagnosticHandler(OldHandler, OldContext);
- }
-
- virtual void HandleTagDeclDefinition(TagDecl *D) {
- PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
- Context->getSourceManager(),
- "LLVM IR generation of declaration");
- Gen->HandleTagDeclDefinition(D);
- }
-
- virtual void CompleteTentativeDefinition(VarDecl *D) {
- Gen->CompleteTentativeDefinition(D);
- }
-
- virtual void HandleVTable(CXXRecordDecl *RD, bool DefinitionRequired) {
- Gen->HandleVTable(RD, DefinitionRequired);
- }
-
- static void InlineAsmDiagHandler(const llvm::SMDiagnostic &SM,void *Context,
- unsigned LocCookie) {
- SourceLocation Loc = SourceLocation::getFromRawEncoding(LocCookie);
- ((BackendConsumer*)Context)->InlineAsmDiagHandler2(SM, Loc);
- }
-
- void InlineAsmDiagHandler2(const llvm::SMDiagnostic &,
- SourceLocation LocCookie);
- };
-}
-
-/// ConvertBackendLocation - Convert a location in a temporary llvm::SourceMgr
-/// buffer to be a valid FullSourceLoc.
-static FullSourceLoc ConvertBackendLocation(const llvm::SMDiagnostic &D,
- SourceManager &CSM) {
- // Get both the clang and llvm source managers. The location is relative to
- // a memory buffer that the LLVM Source Manager is handling, we need to add
- // a copy to the Clang source manager.
- const llvm::SourceMgr &LSM = *D.getSourceMgr();
-
- // We need to copy the underlying LLVM memory buffer because llvm::SourceMgr
- // already owns its one and clang::SourceManager wants to own its one.
- const MemoryBuffer *LBuf =
- LSM.getMemoryBuffer(LSM.FindBufferContainingLoc(D.getLoc()));
-
- // Create the copy and transfer ownership to clang::SourceManager.
- llvm::MemoryBuffer *CBuf =
- llvm::MemoryBuffer::getMemBufferCopy(LBuf->getBuffer(),
- LBuf->getBufferIdentifier());
- FileID FID = CSM.createFileIDForMemBuffer(CBuf);
-
- // Translate the offset into the file.
- unsigned Offset = D.getLoc().getPointer() - LBuf->getBufferStart();
- SourceLocation NewLoc =
- CSM.getLocForStartOfFile(FID).getFileLocWithOffset(Offset);
- return FullSourceLoc(NewLoc, CSM);
-}
-
-
-/// InlineAsmDiagHandler2 - This function is invoked when the backend hits an
-/// error parsing inline asm. The SMDiagnostic indicates the error relative to
-/// the temporary memory buffer that the inline asm parser has set up.
-void BackendConsumer::InlineAsmDiagHandler2(const llvm::SMDiagnostic &D,
- SourceLocation LocCookie) {
- // There are a couple of different kinds of errors we could get here. First,
- // we re-format the SMDiagnostic in terms of a clang diagnostic.
-
- // Strip "error: " off the start of the message string.
- llvm::StringRef Message = D.getMessage();
- if (Message.startswith("error: "))
- Message = Message.substr(7);
-
- // If the SMDiagnostic has an inline asm source location, translate it.
- FullSourceLoc Loc;
- if (D.getLoc() != SMLoc())
- Loc = ConvertBackendLocation(D, Context->getSourceManager());
-
-
- // If this problem has clang-level source location information, report the
- // issue as being an error in the source with a note showing the instantiated
- // code.
- if (LocCookie.isValid()) {
- Diags.Report(FullSourceLoc(LocCookie, Context->getSourceManager()),
- diag::err_fe_inline_asm).AddString(Message);
-
- if (D.getLoc().isValid())
- Diags.Report(Loc, diag::note_fe_inline_asm_here);
- return;
- }
-
- // Otherwise, report the backend error as occuring in the generated .s file.
- // If Loc is invalid, we still need to report the error, it just gets no
- // location info.
- Diags.Report(Loc, diag::err_fe_inline_asm).AddString(Message);
-}
-
-//
-
-CodeGenAction::CodeGenAction(unsigned _Act) : Act(_Act) {}
-
-CodeGenAction::~CodeGenAction() {}
-
-bool CodeGenAction::hasIRSupport() const { return true; }
-
-void CodeGenAction::EndSourceFileAction() {
- // If the consumer creation failed, do nothing.
- if (!getCompilerInstance().hasASTConsumer())
- return;
-
- // Steal the module from the consumer.
- BackendConsumer *Consumer = static_cast<BackendConsumer*>(
- &getCompilerInstance().getASTConsumer());
-
- TheModule.reset(Consumer->takeModule());
-}
-
-llvm::Module *CodeGenAction::takeModule() {
- return TheModule.take();
-}
-
-static raw_ostream *GetOutputStream(CompilerInstance &CI,
- llvm::StringRef InFile,
- BackendAction Action) {
- switch (Action) {
- case Backend_EmitAssembly:
- return CI.createDefaultOutputFile(false, InFile, "s");
- case Backend_EmitLL:
- return CI.createDefaultOutputFile(false, InFile, "ll");
- case Backend_EmitBC:
- return CI.createDefaultOutputFile(true, InFile, "bc");
- case Backend_EmitNothing:
- return 0;
- case Backend_EmitMCNull:
- case Backend_EmitObj:
- return CI.createDefaultOutputFile(true, InFile, "o");
- }
-
- assert(0 && "Invalid action!");
- return 0;
-}
-
-ASTConsumer *CodeGenAction::CreateASTConsumer(CompilerInstance &CI,
- llvm::StringRef InFile) {
- BackendAction BA = static_cast<BackendAction>(Act);
- llvm::OwningPtr<llvm::raw_ostream> OS(GetOutputStream(CI, InFile, BA));
- if (BA != Backend_EmitNothing && !OS)
- return 0;
-
- return new BackendConsumer(BA, CI.getDiagnostics(),
- CI.getCodeGenOpts(), CI.getTargetOpts(),
- CI.getFrontendOpts().ShowTimers, InFile, OS.take(),
- CI.getLLVMContext());
-}
-
-void CodeGenAction::ExecuteAction() {
- // If this is an IR file, we have to treat it specially.
- if (getCurrentFileKind() == IK_LLVM_IR) {
- BackendAction BA = static_cast<BackendAction>(Act);
- CompilerInstance &CI = getCompilerInstance();
- raw_ostream *OS = GetOutputStream(CI, getCurrentFile(), BA);
- if (BA != Backend_EmitNothing && !OS)
- return;
-
- bool Invalid;
- SourceManager &SM = CI.getSourceManager();
- const llvm::MemoryBuffer *MainFile = SM.getBuffer(SM.getMainFileID(),
- &Invalid);
- if (Invalid)
- return;
-
- // FIXME: This is stupid, IRReader shouldn't take ownership.
- llvm::MemoryBuffer *MainFileCopy =
- llvm::MemoryBuffer::getMemBufferCopy(MainFile->getBuffer(),
- getCurrentFile().c_str());
-
- llvm::SMDiagnostic Err;
- TheModule.reset(ParseIR(MainFileCopy, Err, CI.getLLVMContext()));
- if (!TheModule) {
- // Translate from the diagnostic info to the SourceManager location.
- SourceLocation Loc = SM.getLocation(
- SM.getFileEntryForID(SM.getMainFileID()), Err.getLineNo(),
- Err.getColumnNo() + 1);
-
- // Get a custom diagnostic for the error. We strip off a leading
- // diagnostic code if there is one.
- llvm::StringRef Msg = Err.getMessage();
- if (Msg.startswith("error: "))
- Msg = Msg.substr(7);
- unsigned DiagID = CI.getDiagnostics().getCustomDiagID(Diagnostic::Error,
- Msg);
-
- CI.getDiagnostics().Report(FullSourceLoc(Loc, SM), DiagID);
- return;
- }
-
- EmitBackendOutput(CI.getDiagnostics(), CI.getCodeGenOpts(),
- CI.getTargetOpts(), TheModule.get(),
- BA, OS);
- return;
- }
-
- // Otherwise follow the normal AST path.
- this->ASTFrontendAction::ExecuteAction();
-}
-
-//
-
-EmitAssemblyAction::EmitAssemblyAction()
- : CodeGenAction(Backend_EmitAssembly) {}
-
-EmitBCAction::EmitBCAction() : CodeGenAction(Backend_EmitBC) {}
-
-EmitLLVMAction::EmitLLVMAction() : CodeGenAction(Backend_EmitLL) {}
-
-EmitLLVMOnlyAction::EmitLLVMOnlyAction() : CodeGenAction(Backend_EmitNothing) {}
-
-EmitCodeGenOnlyAction::EmitCodeGenOnlyAction() : CodeGenAction(Backend_EmitMCNull) {}
-
-EmitObjAction::EmitObjAction() : CodeGenAction(Backend_EmitObj) {}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-26 04:57:23 +0000