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authorrdivacky <rdivacky@FreeBSD.org>2010-05-04 16:12:48 +0000
committerrdivacky <rdivacky@FreeBSD.org>2010-05-04 16:12:48 +0000
commit8aaf5818a64e9f7687798852af5945b053c68a54 (patch)
treed6a70c3518b8dea8be7062438d7e8676820ed17f /lib/Frontend/CodeGenAction.cpp
parent71438373cd57f0d5d8c93bb5cf690844a0fbc9d0 (diff)
downloadFreeBSD-src-8aaf5818a64e9f7687798852af5945b053c68a54.zip
FreeBSD-src-8aaf5818a64e9f7687798852af5945b053c68a54.tar.gz
Update clang to r103004.
Diffstat (limited to 'lib/Frontend/CodeGenAction.cpp')
-rw-r--r--lib/Frontend/CodeGenAction.cpp313
1 files changed, 194 insertions, 119 deletions
diff --git a/lib/Frontend/CodeGenAction.cpp b/lib/Frontend/CodeGenAction.cpp
index b1795a3..79d7d5f 100644
--- a/lib/Frontend/CodeGenAction.cpp
+++ b/lib/Frontend/CodeGenAction.cpp
@@ -8,16 +8,18 @@
//===----------------------------------------------------------------------===//
#include "clang/Frontend/CodeGenAction.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/TargetInfo.h"
+#include "clang/Basic/TargetOptions.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclGroup.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/Basic/TargetOptions.h"
#include "clang/CodeGen/CodeGenOptions.h"
#include "clang/CodeGen/ModuleBuilder.h"
#include "clang/Frontend/ASTConsumers.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendDiagnostic.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/ADT/OwningPtr.h"
@@ -28,6 +30,8 @@
#include "llvm/CodeGen/RegAllocRegistry.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/StandardPasses.h"
#include "llvm/Support/Timer.h"
#include "llvm/Target/SubtargetFeature.h"
@@ -87,7 +91,7 @@ namespace {
const LangOptions &langopts, const CodeGenOptions &compopts,
const TargetOptions &targetopts, bool TimePasses,
const std::string &infile, llvm::raw_ostream *OS,
- LLVMContext& C) :
+ LLVMContext &C) :
Diags(_Diags),
Action(action),
CodeGenOpts(compopts),
@@ -175,6 +179,15 @@ namespace {
virtual void CompleteTentativeDefinition(VarDecl *D) {
Gen->CompleteTentativeDefinition(D);
}
+
+ 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);
};
}
@@ -211,127 +224,122 @@ bool BackendConsumer::AddEmitPasses() {
if (Action == Backend_EmitBC) {
getPerModulePasses()->add(createBitcodeWriterPass(FormattedOutStream));
- } else if (Action == Backend_EmitLL) {
+ return true;
+ }
+
+ if (Action == Backend_EmitLL) {
getPerModulePasses()->add(createPrintModulePass(&FormattedOutStream));
+ return true;
+ }
+
+ bool Fast = CodeGenOpts.OptimizationLevel == 0;
+
+ // Create the TargetMachine for generating code.
+ std::string Error;
+ std::string Triple = TheModule->getTargetTriple();
+ const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
+ if (!TheTarget) {
+ Diags.Report(diag::err_fe_unable_to_create_target) << Error;
+ return false;
+ }
+
+ // FIXME: Expose these capabilities via actual APIs!!!! Aside from just
+ // being gross, this is also totally broken if we ever care about
+ // concurrency.
+ llvm::NoFramePointerElim = CodeGenOpts.DisableFPElim;
+ if (CodeGenOpts.FloatABI == "soft")
+ llvm::FloatABIType = llvm::FloatABI::Soft;
+ else if (CodeGenOpts.FloatABI == "hard")
+ llvm::FloatABIType = llvm::FloatABI::Hard;
+ else {
+ assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!");
+ llvm::FloatABIType = llvm::FloatABI::Default;
+ }
+ NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
+ llvm::UseSoftFloat = CodeGenOpts.SoftFloat;
+ UnwindTablesMandatory = CodeGenOpts.UnwindTables;
+
+ TargetMachine::setAsmVerbosityDefault(CodeGenOpts.AsmVerbose);
+
+ TargetMachine::setFunctionSections(CodeGenOpts.FunctionSections);
+ TargetMachine::setDataSections (CodeGenOpts.DataSections);
+
+ // FIXME: Parse this earlier.
+ if (CodeGenOpts.RelocationModel == "static") {
+ TargetMachine::setRelocationModel(llvm::Reloc::Static);
+ } else if (CodeGenOpts.RelocationModel == "pic") {
+ TargetMachine::setRelocationModel(llvm::Reloc::PIC_);
} else {
- bool Fast = CodeGenOpts.OptimizationLevel == 0;
-
- // Create the TargetMachine for generating code.
- std::string Error;
- std::string Triple = TheModule->getTargetTriple();
- const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
- if (!TheTarget) {
- Diags.Report(diag::err_fe_unable_to_create_target) << Error;
- return false;
- }
+ assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" &&
+ "Invalid PIC model!");
+ TargetMachine::setRelocationModel(llvm::Reloc::DynamicNoPIC);
+ }
+ // FIXME: Parse this earlier.
+ if (CodeGenOpts.CodeModel == "small") {
+ TargetMachine::setCodeModel(llvm::CodeModel::Small);
+ } else if (CodeGenOpts.CodeModel == "kernel") {
+ TargetMachine::setCodeModel(llvm::CodeModel::Kernel);
+ } else if (CodeGenOpts.CodeModel == "medium") {
+ TargetMachine::setCodeModel(llvm::CodeModel::Medium);
+ } else if (CodeGenOpts.CodeModel == "large") {
+ TargetMachine::setCodeModel(llvm::CodeModel::Large);
+ } else {
+ assert(CodeGenOpts.CodeModel.empty() && "Invalid code model!");
+ TargetMachine::setCodeModel(llvm::CodeModel::Default);
+ }
- // FIXME: Expose these capabilities via actual APIs!!!! Aside from just
- // being gross, this is also totally broken if we ever care about
- // concurrency.
- llvm::NoFramePointerElim = CodeGenOpts.DisableFPElim;
- if (CodeGenOpts.FloatABI == "soft")
- llvm::FloatABIType = llvm::FloatABI::Soft;
- else if (CodeGenOpts.FloatABI == "hard")
- llvm::FloatABIType = llvm::FloatABI::Hard;
- else {
- assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!");
- llvm::FloatABIType = llvm::FloatABI::Default;
- }
- NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
- llvm::UseSoftFloat = CodeGenOpts.SoftFloat;
- UnwindTablesMandatory = CodeGenOpts.UnwindTables;
-
- TargetMachine::setAsmVerbosityDefault(CodeGenOpts.AsmVerbose);
-
- // FIXME: Parse this earlier.
- if (CodeGenOpts.RelocationModel == "static") {
- TargetMachine::setRelocationModel(llvm::Reloc::Static);
- } else if (CodeGenOpts.RelocationModel == "pic") {
- TargetMachine::setRelocationModel(llvm::Reloc::PIC_);
- } else {
- assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" &&
- "Invalid PIC model!");
- TargetMachine::setRelocationModel(llvm::Reloc::DynamicNoPIC);
- }
- // FIXME: Parse this earlier.
- if (CodeGenOpts.CodeModel == "small") {
- TargetMachine::setCodeModel(llvm::CodeModel::Small);
- } else if (CodeGenOpts.CodeModel == "kernel") {
- TargetMachine::setCodeModel(llvm::CodeModel::Kernel);
- } else if (CodeGenOpts.CodeModel == "medium") {
- TargetMachine::setCodeModel(llvm::CodeModel::Medium);
- } else if (CodeGenOpts.CodeModel == "large") {
- TargetMachine::setCodeModel(llvm::CodeModel::Large);
- } else {
- assert(CodeGenOpts.CodeModel.empty() && "Invalid code model!");
- TargetMachine::setCodeModel(llvm::CodeModel::Default);
- }
+ std::vector<const char *> BackendArgs;
+ BackendArgs.push_back("clang"); // Fake program name.
+ if (!CodeGenOpts.DebugPass.empty()) {
+ BackendArgs.push_back("-debug-pass");
+ BackendArgs.push_back(CodeGenOpts.DebugPass.c_str());
+ }
+ if (!CodeGenOpts.LimitFloatPrecision.empty()) {
+ BackendArgs.push_back("-limit-float-precision");
+ BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str());
+ }
+ if (llvm::TimePassesIsEnabled)
+ BackendArgs.push_back("-time-passes");
+ BackendArgs.push_back(0);
+ llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1,
+ const_cast<char **>(&BackendArgs[0]));
+
+ std::string FeaturesStr;
+ if (TargetOpts.CPU.size() || TargetOpts.Features.size()) {
+ SubtargetFeatures Features;
+ Features.setCPU(TargetOpts.CPU);
+ for (std::vector<std::string>::const_iterator
+ it = TargetOpts.Features.begin(),
+ ie = TargetOpts.Features.end(); it != ie; ++it)
+ Features.AddFeature(*it);
+ FeaturesStr = Features.getString();
+ }
+ TargetMachine *TM = TheTarget->createTargetMachine(Triple, FeaturesStr);
- std::vector<const char *> BackendArgs;
- BackendArgs.push_back("clang"); // Fake program name.
- if (!CodeGenOpts.DebugPass.empty()) {
- BackendArgs.push_back("-debug-pass");
- BackendArgs.push_back(CodeGenOpts.DebugPass.c_str());
- }
- if (!CodeGenOpts.LimitFloatPrecision.empty()) {
- BackendArgs.push_back("-limit-float-precision");
- BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str());
- }
- if (llvm::TimePassesIsEnabled)
- BackendArgs.push_back("-time-passes");
- BackendArgs.push_back(0);
- llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1,
- (char**) &BackendArgs[0]);
-
- std::string FeaturesStr;
- if (TargetOpts.CPU.size() || TargetOpts.Features.size()) {
- SubtargetFeatures Features;
- Features.setCPU(TargetOpts.CPU);
- for (std::vector<std::string>::const_iterator
- it = TargetOpts.Features.begin(),
- ie = TargetOpts.Features.end(); it != ie; ++it)
- Features.AddFeature(*it);
- FeaturesStr = Features.getString();
- }
- TargetMachine *TM = TheTarget->createTargetMachine(Triple, FeaturesStr);
-
- // Set register scheduler & allocation policy.
- RegisterScheduler::setDefault(createDefaultScheduler);
- RegisterRegAlloc::setDefault(Fast ? createLocalRegisterAllocator :
- createLinearScanRegisterAllocator);
-
- // From llvm-gcc:
- // If there are passes we have to run on the entire module, we do codegen
- // as a separate "pass" after that happens.
- // FIXME: This is disabled right now until bugs can be worked out. Reenable
- // this for fast -O0 compiles!
- FunctionPassManager *PM = getCodeGenPasses();
- CodeGenOpt::Level OptLevel = CodeGenOpt::Default;
-
- switch (CodeGenOpts.OptimizationLevel) {
- default: break;
- case 0: OptLevel = CodeGenOpt::None; break;
- case 3: OptLevel = CodeGenOpt::Aggressive; break;
- }
+ // Set register scheduler & allocation policy.
+ RegisterScheduler::setDefault(createDefaultScheduler);
+ RegisterRegAlloc::setDefault(Fast ? createLocalRegisterAllocator :
+ createLinearScanRegisterAllocator);
- // Request that addPassesToEmitFile run the Verifier after running
- // passes which modify the IR.
-#ifndef NDEBUG
- bool DisableVerify = false;
-#else
- bool DisableVerify = true;
-#endif
-
- // Normal mode, emit a .s or .o file by running the code generator. Note,
- // this also adds codegenerator level optimization passes.
- TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile;
- if (Action == Backend_EmitObj)
- CGFT = TargetMachine::CGFT_ObjectFile;
- if (TM->addPassesToEmitFile(*PM, FormattedOutStream, CGFT, OptLevel,
- DisableVerify)) {
- Diags.Report(diag::err_fe_unable_to_interface_with_target);
- return false;
- }
+ // Create the code generator passes.
+ FunctionPassManager *PM = getCodeGenPasses();
+ CodeGenOpt::Level OptLevel = CodeGenOpt::Default;
+
+ switch (CodeGenOpts.OptimizationLevel) {
+ default: break;
+ case 0: OptLevel = CodeGenOpt::None; break;
+ case 3: OptLevel = CodeGenOpt::Aggressive; break;
+ }
+
+ // Normal mode, emit a .s or .o file by running the code generator. Note,
+ // this also adds codegenerator level optimization passes.
+ TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile;
+ if (Action == Backend_EmitObj)
+ CGFT = TargetMachine::CGFT_ObjectFile;
+ if (TM->addPassesToEmitFile(*PM, FormattedOutStream, CGFT, OptLevel,
+ /*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
+ Diags.Report(diag::err_fe_unable_to_interface_with_target);
+ return false;
}
return true;
@@ -432,14 +440,81 @@ void BackendConsumer::EmitAssembly() {
if (CodeGenPasses) {
PrettyStackTraceString CrashInfo("Code 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);
+
CodeGenPasses->doInitialization();
for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
if (!I->isDeclaration())
CodeGenPasses->run(*I);
CodeGenPasses->doFinalization();
+
+ Ctx.setInlineAsmDiagnosticHandler(OldHandler, OldContext);
}
}
+/// 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);
+
+ // There are two cases: the SMDiagnostic could have a inline asm source
+ // location or it might not. If it does, translate the location.
+ FullSourceLoc Loc;
+ if (D.getLoc() != SMLoc())
+ Loc = ConvertBackendLocation(D, Context->getSourceManager());
+ Diags.Report(Loc, diag::err_fe_inline_asm).AddString(Message);
+
+ // This could be a problem with no clang-level source location information.
+ // In this case, LocCookie is invalid. If there is source level information,
+ // print an "generated from" note.
+ if (LocCookie.isValid())
+ Diags.Report(FullSourceLoc(LocCookie, Context->getSourceManager()),
+ diag::note_fe_inline_asm_here);
+}
+
//
CodeGenAction::CodeGenAction(unsigned _Act) : Act(_Act) {}
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