#include "llvm/CodeGen/MachineFunctionAnalysis.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetRegistry.h"
#include "llvm/Transforms/Scalar.h"
+#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/FormattedStream.h"
using namespace llvm;
cl::desc("Disable branch folding"));
static cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden,
cl::desc("Disable tail duplication"));
+static cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden,
+ cl::desc("Disable pre-register allocation tail duplication"));
static cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden,
cl::desc("Disable code placement"));
static cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden,
cl::desc("Print LLVM IR produced by the loop-reduce pass"));
static cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden,
cl::desc("Print LLVM IR input to isel pass"));
-static cl::opt<bool> PrintEmittedAsm("print-emitted-asm", cl::Hidden,
- cl::desc("Dump emitter generated instructions as assembly"));
static cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden,
cl::desc("Dump garbage collector data"));
static cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden,
cl::desc("Verify generated machine code"),
cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL));
+static cl::opt<cl::boolOrDefault>
+AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
+ cl::init(cl::BOU_UNSET));
+
+static bool getVerboseAsm() {
+ switch (AsmVerbose) {
+ default:
+ case cl::BOU_UNSET: return TargetMachine::getAsmVerbosityDefault();
+ case cl::BOU_TRUE: return true;
+ case cl::BOU_FALSE: return false;
+ }
+}
+
// Enable or disable FastISel. Both options are needed, because
// FastISel is enabled by default with -fast, and we wish to be
// able to enable or disable fast-isel independently from -O0.
static cl::opt<bool> EnableSplitGEPGVN("split-gep-gvn", cl::Hidden,
cl::desc("Split GEPs and run no-load GVN"));
-static cl::opt<bool> PreAllocTailDup("pre-regalloc-taildup", cl::Hidden,
- cl::desc("Pre-register allocation tail duplication"));
-
LLVMTargetMachine::LLVMTargetMachine(const Target &T,
const std::string &TargetTriple)
: TargetMachine(T) {
setCodeModel(CodeModel::Small);
}
-FileModel::Model
+TargetMachine::CodeGenFileType
LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
formatted_raw_ostream &Out,
CodeGenFileType FileType,
CodeGenOpt::Level OptLevel) {
// Add common CodeGen passes.
if (addCommonCodeGenPasses(PM, OptLevel))
- return FileModel::Error;
+ return CGFT_ErrorOccurred;
+
+ OwningPtr<MCContext> Context(new MCContext());
+ OwningPtr<MCStreamer> AsmStreamer;
switch (FileType) {
- default:
+ default: return CGFT_ErrorOccurred;
+ case CGFT_AssemblyFile:
+ AsmStreamer.reset(createAsmStreamer(*Context, Out, *getMCAsmInfo(),
+ getTargetData()->isLittleEndian(),
+ getVerboseAsm(), /*instprinter*/0,
+ /*codeemitter*/0));
+ break;
+ case CGFT_ObjectFile: {
+ // Create the code emitter for the target if it exists. If not, .o file
+ // emission fails.
+ MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this);
+ if (MCE == 0)
+ return CGFT_ErrorOccurred;
+
+ AsmStreamer.reset(createMachOStreamer(*Context, Out, MCE));
break;
- case TargetMachine::AssemblyFile:
- if (addAssemblyEmitter(PM, OptLevel, getAsmVerbosityDefault(), Out))
- return FileModel::Error;
- return FileModel::AsmFile;
- case TargetMachine::ObjectFile:
- if (getMachOWriterInfo())
- return FileModel::MachOFile;
- else if (getELFWriterInfo())
- return FileModel::ElfFile;
}
-
- return FileModel::Error;
-}
-
-bool LLVMTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- bool Verbose,
- formatted_raw_ostream &Out) {
+ }
+
+ // Create the AsmPrinter, which takes ownership of Context and AsmStreamer
+ // if successful.
FunctionPass *Printer =
- getTarget().createAsmPrinter(Out, *this, getMCAsmInfo(), Verbose);
- if (!Printer)
- return true;
-
- PM.add(Printer);
- return false;
-}
-
-/// addPassesToEmitFileFinish - If the passes to emit the specified file had to
-/// be split up (e.g., to add an object writer pass), this method can be used to
-/// finish up adding passes to emit the file, if necessary.
-bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
- MachineCodeEmitter *MCE,
- CodeGenOpt::Level OptLevel) {
- // Make sure the code model is set.
- setCodeModelForStatic();
+ getTarget().createAsmPrinter(Out, *this, *Context, *AsmStreamer,
+ getMCAsmInfo());
+ if (Printer == 0)
+ return CGFT_ErrorOccurred;
- if (MCE)
- addSimpleCodeEmitter(PM, OptLevel, *MCE);
- if (PrintEmittedAsm)
- addAssemblyEmitter(PM, OptLevel, true, ferrs());
-
- PM.add(createGCInfoDeleter());
-
- return false; // success!
-}
-
-/// addPassesToEmitFileFinish - If the passes to emit the specified file had to
-/// be split up (e.g., to add an object writer pass), this method can be used to
-/// finish up adding passes to emit the file, if necessary.
-bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
- JITCodeEmitter *JCE,
- CodeGenOpt::Level OptLevel) {
- // Make sure the code model is set.
- setCodeModelForJIT();
+ // If successful, createAsmPrinter took ownership of AsmStreamer and Context.
+ Context.take(); AsmStreamer.take();
- if (JCE)
- addSimpleCodeEmitter(PM, OptLevel, *JCE);
- if (PrintEmittedAsm)
- addAssemblyEmitter(PM, OptLevel, true, ferrs());
-
- PM.add(createGCInfoDeleter());
-
- return false; // success!
-}
-
-/// addPassesToEmitFileFinish - If the passes to emit the specified file had to
-/// be split up (e.g., to add an object writer pass), this method can be used to
-/// finish up adding passes to emit the file, if necessary.
-bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
- ObjectCodeEmitter *OCE,
- CodeGenOpt::Level OptLevel) {
- // Make sure the code model is set.
- setCodeModelForStatic();
+ PM.add(Printer);
- if (OCE)
- addSimpleCodeEmitter(PM, OptLevel, *OCE);
- if (PrintEmittedAsm)
- addAssemblyEmitter(PM, OptLevel, true, ferrs());
-
- PM.add(createGCInfoDeleter());
-
- return false; // success!
-}
-
-/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
-/// get machine code emitted. This uses a MachineCodeEmitter object to handle
-/// actually outputting the machine code and resolving things like the address
-/// of functions. This method should returns true if machine code emission is
-/// not supported.
-///
-bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
- MachineCodeEmitter &MCE,
- CodeGenOpt::Level OptLevel) {
// Make sure the code model is set.
- setCodeModelForJIT();
-
- // Add common CodeGen passes.
- if (addCommonCodeGenPasses(PM, OptLevel))
- return true;
-
- addCodeEmitter(PM, OptLevel, MCE);
- if (PrintEmittedAsm)
- addAssemblyEmitter(PM, OptLevel, true, ferrs());
-
+ setCodeModelForStatic();
PM.add(createGCInfoDeleter());
-
- return false; // success!
+ return FileType;
}
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
-/// get machine code emitted. This uses a MachineCodeEmitter object to handle
+/// get machine code emitted. This uses a JITCodeEmitter object to handle
/// actually outputting the machine code and resolving things like the address
/// of functions. This method should returns true if machine code emission is
/// not supported.
return true;
addCodeEmitter(PM, OptLevel, JCE);
- if (PrintEmittedAsm)
- addAssemblyEmitter(PM, OptLevel, true, ferrs());
-
PM.add(createGCInfoDeleter());
return false; // success!
const char *Banner,
bool allowDoubleDefs = false) {
if (PrintMachineCode)
- PM.add(createMachineFunctionPrinterPass(errs(), Banner));
+ PM.add(createMachineFunctionPrinterPass(dbgs(), Banner));
if (VerifyMachineCode)
PM.add(createMachineVerifierPass(allowDoubleDefs));
if (OptLevel != CodeGenOpt::None && !DisableLSR) {
PM.add(createLoopStrengthReducePass(getTargetLowering()));
if (PrintLSR)
- PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &errs()));
+ PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs()));
}
// Turn exception handling constructs into something the code generators can
{
case ExceptionHandling::SjLj:
// SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both
- PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None));
+ // Dwarf EH prepare needs to be run after SjLj prepare. Otherwise,
+ // catch info can get misplaced when a selector ends up more than one block
+ // removed from the parent invoke(s). This could happen when a landing
+ // pad is shared by multiple invokes and is also a target of a normal
+ // edge from elsewhere.
PM.add(createSjLjEHPass(getTargetLowering()));
+ PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None));
break;
case ExceptionHandling::Dwarf:
PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None));
if (PrintISelInput)
PM.add(createPrintFunctionPass("\n\n"
"*** Final LLVM Code input to ISel ***\n",
- &errs()));
+ &dbgs()));
// Standard Lower-Level Passes.
/* allowDoubleDefs= */ true);
if (OptLevel != CodeGenOpt::None) {
+ PM.add(createOptimizeExtsPass());
if (!DisableMachineLICM)
PM.add(createMachineLICMPass());
if (!DisableMachineSink)
}
// Pre-ra tail duplication.
- if (OptLevel != CodeGenOpt::None &&
- !DisableTailDuplicate && PreAllocTailDup) {
+ if (OptLevel != CodeGenOpt::None && !DisableEarlyTailDup) {
PM.add(createTailDuplicatePass(true));
- printAndVerify(PM, "After Pre-RegAlloc TailDuplicate");
+ printAndVerify(PM, "After Pre-RegAlloc TailDuplicate",
+ /* allowDoubleDefs= */ true);
}
// Run pre-ra passes.
PM.add(createGCMachineCodeAnalysisPass());
if (PrintGCInfo)
- PM.add(createGCInfoPrinter(errs()));
+ PM.add(createGCInfoPrinter(dbgs()));
if (OptLevel != CodeGenOpt::None && !DisableCodePlace) {
PM.add(createCodePlacementOptPass());
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