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change addPassesToEmitFile to return true on failure instead of its input,

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add -filetype=null for performance testing and remove -filetype=dynlib,
which isn't planned to be implemented.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95202 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-03 05:55:08 +00:00
parent febc81680c
commit 5669e30097
4 changed files with 42 additions and 54 deletions
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36
include/llvm/Target/TargetMachine.h
View File

@ -199,8 +199,7 @@ public:
enum CodeGenFileType {
CGFT_AssemblyFile,
CGFT_ObjectFile,
CGFT_DynamicLibrary,
CGFT_ErrorOccurred
CGFT_Null // Do not emit any output.
};
/// getEnableTailMergeDefault - the default setting for -enable-tail-merge
@ -209,15 +208,13 @@ public:
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
/// specified file emitted. Typically this will involve several steps of code
/// generation.
/// This method should return InvalidFile if emission of this file type
/// is not supported.
///
virtual CodeGenFileType addPassesToEmitFile(PassManagerBase &,
formatted_raw_ostream &,
CodeGenFileType Filetype,
CodeGenOpt::Level) {
return CGFT_ErrorOccurred;
/// generation. This method should return true if emission of this file type
/// is not supported, or false on success.
virtual bool addPassesToEmitFile(PassManagerBase &,
formatted_raw_ostream &,
CodeGenFileType Filetype,
CodeGenOpt::Level) {
return true;
}
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
@ -264,18 +261,11 @@ public:
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
/// specified file emitted. Typically this will involve several steps of code
/// generation. If OptLevel is None, the code generator should emit code as
/// fast as possible, though the generated code may be less efficient. This
/// method should return CGFT_ErrorOccurred if emission of this file type is
/// not supported.
///
/// The default implementation of this method adds components from the
/// LLVM retargetable code generator, invoking the methods below to get
/// target-specific passes in standard locations.
///
virtual CodeGenFileType addPassesToEmitFile(PassManagerBase &PM,
formatted_raw_ostream &Out,
CodeGenFileType FileType,
CodeGenOpt::Level);
/// fast as possible, though the generated code may be less efficient.
virtual bool addPassesToEmitFile(PassManagerBase &PM,
formatted_raw_ostream &Out,
CodeGenFileType FileType,
CodeGenOpt::Level);
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
/// get machine code emitted. This uses a JITCodeEmitter object to handle

29
lib/CodeGen/LLVMTargetMachine.cpp
View File

@ -111,21 +111,20 @@ LLVMTargetMachine::setCodeModelForStatic() {
setCodeModel(CodeModel::Small);
}
TargetMachine::CodeGenFileType
LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
formatted_raw_ostream &Out,
CodeGenFileType FileType,
CodeGenOpt::Level OptLevel) {
bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
formatted_raw_ostream &Out,
CodeGenFileType FileType,
CodeGenOpt::Level OptLevel) {
// Add common CodeGen passes.
if (addCommonCodeGenPasses(PM, OptLevel))
return CGFT_ErrorOccurred;
return true;
OwningPtr<MCContext> Context(new MCContext());
OwningPtr<MCStreamer> AsmStreamer;
formatted_raw_ostream *LegacyOutput;
switch (FileType) {
default: return CGFT_ErrorOccurred;
default: return true;
case CGFT_AssemblyFile: {
const MCAsmInfo &MAI = *getMCAsmInfo();
MCInstPrinter *InstPrinter =
@ -143,7 +142,7 @@ LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
// emission fails.
MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this);
if (MCE == 0)
return CGFT_ErrorOccurred;
return true;
AsmStreamer.reset(createMachOStreamer(*Context, Out, MCE));
@ -154,6 +153,16 @@ LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
LegacyOutput = new formatted_raw_ostream(errs());
break;
}
case CGFT_Null:
// The Null output is intended for use for performance analysis and testing,
// not real users.
AsmStreamer.reset(createNullStreamer(*Context));
// Any output to the asmprinter's "O" stream is bad and needs to be fixed,
// force it to come out stderr.
// FIXME: this is horrible and leaks, eventually remove the raw_ostream from
// asmprinter.
LegacyOutput = new formatted_raw_ostream(errs());
break;
}
// Create the AsmPrinter, which takes ownership of Context and AsmStreamer
@ -162,7 +171,7 @@ LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
getTarget().createAsmPrinter(*LegacyOutput, *this, *Context, *AsmStreamer,
getMCAsmInfo());
if (Printer == 0)
return CGFT_ErrorOccurred;
return true;
// If successful, createAsmPrinter took ownership of AsmStreamer and Context.
Context.take(); AsmStreamer.take();
@ -172,7 +181,7 @@ LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
// Make sure the code model is set.
setCodeModelForStatic();
PM.add(createGCInfoDeleter());
return FileType;
return false;
}
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to

18
tools/llc/llc.cpp
View File

@ -91,9 +91,8 @@ FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
"Emit an assembly ('.s') file"),
clEnumValN(TargetMachine::CGFT_ObjectFile, "obj",
"Emit a native object ('.o') file [experimental]"),
clEnumValN(TargetMachine::CGFT_DynamicLibrary, "dynlib",
"Emit a native dynamic library ('.so') file"
" [experimental]"),
clEnumValN(TargetMachine::CGFT_Null, "null",
"Emit nothing, for performance testing"),
clEnumValEnd));
cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
@ -177,8 +176,8 @@ static formatted_raw_ostream *GetOutputStream(const char *TargetName,
OutputFilename += ".o";
Binary = true;
break;
case TargetMachine::CGFT_DynamicLibrary:
OutputFilename += LTDL_SHLIB_EXT;
case TargetMachine::CGFT_Null:
OutputFilename += ".null";
Binary = true;
break;
}
@ -348,20 +347,13 @@ int main(int argc, char **argv) {
// Override default to generate verbose assembly.
Target.setAsmVerbosityDefault(true);
switch (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl)) {
default:
assert(0 && "Invalid file model!");
return 1;
case TargetMachine::CGFT_ErrorOccurred:
if (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl)) {
errs() << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &fouts()) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
case TargetMachine::CGFT_AssemblyFile:
case TargetMachine::CGFT_ObjectFile:
break;
}
Passes.doInitialization();

13
tools/lto/LTOCodeGenerator.cpp
View File

@ -393,14 +393,11 @@ bool LTOCodeGenerator::generateAssemblyCode(formatted_raw_ostream& out,
codeGenPasses->add(new TargetData(*_target->getTargetData()));
switch (_target->addPassesToEmitFile(*codeGenPasses, out,
TargetMachine::CGFT_AssemblyFile,
CodeGenOpt::Aggressive)) {
case TargetMachine::CGFT_AssemblyFile:
break;
default:
errMsg = "target file type not supported";
return true;
if (_target->addPassesToEmitFile(*codeGenPasses, out,
TargetMachine::CGFT_AssemblyFile,
CodeGenOpt::Aggressive)) {
errMsg = "target file type not supported";
return true;
}
// Run our queue of passes all at once now, efficiently.