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add bitcode reading support. Remove EH cruft.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36839 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-06 04:55:19 +00:00
parent 68d4922adf
commit 1a7354082a
2 changed files with 141 additions and 132 deletions
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3
tools/llc/Makefile
View File

@ -9,14 +9,13 @@
LEVEL = ../..
TOOLNAME = llc
REQUIRES_EH := 1
# Include this here so we can get the configuration of the targets
# that have been configured for construction. We have to do this
# early so we can set up LINK_COMPONENTS before including Makefile.rules
include $(LEVEL)/Makefile.config
LINK_COMPONENTS := $(TARGETS_TO_BUILD) bcreader
LINK_COMPONENTS := $(TARGETS_TO_BUILD) bcreader bitreader
include $(LLVM_SRC_ROOT)/Makefile.rules

270
tools/llc/llc.cpp
View File

@ -13,6 +13,7 @@
//
//===----------------------------------------------------------------------===//
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Bytecode/Reader.h"
#include "llvm/CodeGen/FileWriters.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
@ -27,6 +28,7 @@
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compressor.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Analysis/Verifier.h"
@ -36,9 +38,11 @@
#include <fstream>
#include <iostream>
#include <memory>
using namespace llvm;
cl::opt<bool> Bitcode("bitcode");
// General options for llc. Other pass-specific options are specified
// within the corresponding llc passes, and target-specific options
// and back-end code generation options are specified with the target machine.
@ -172,137 +176,143 @@ static std::ostream *GetOutputStream(const char *ProgName) {
//
int main(int argc, char **argv) {
llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
try {
cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
sys::PrintStackTraceOnErrorSignal();
cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
sys::PrintStackTraceOnErrorSignal();
// Load the module to be compiled...
std::string errmsg;
std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename,
Compressor::decompressToNewBuffer,
&errmsg));
if (M.get() == 0) {
std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
std::cerr << "Reason: " << errmsg << "\n";
// Load the module to be compiled...
std::string ErrorMessage;
std::auto_ptr<Module> M;
if (Bitcode) {
MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(&InputFilename[0],
InputFilename.size());
if (Buffer == 0)
ErrorMessage = "Error reading file '" + InputFilename + "'";
else
M.reset(ParseBitcodeFile(Buffer, &ErrorMessage));
delete Buffer;
} else {
M.reset(ParseBytecodeFile(InputFilename,
Compressor::decompressToNewBuffer,
&ErrorMessage));
}
if (M.get() == 0) {
std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
std::cerr << "Reason: " << ErrorMessage << "\n";
return 1;
}
Module &mod = *M.get();
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
mod.setTargetTriple(TargetTriple);
// Allocate target machine. First, check whether the user has
// explicitly specified an architecture to compile for.
if (MArch == 0) {
std::string Err;
MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
if (MArch == 0) {
std::cerr << argv[0] << ": error auto-selecting target for module '"
<< Err << "'. Please use the -march option to explicitly "
<< "pick a target.\n";
return 1;
}
Module &mod = *M.get();
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
mod.setTargetTriple(TargetTriple);
// Allocate target machine. First, check whether the user has
// explicitly specified an architecture to compile for.
if (MArch == 0) {
std::string Err;
MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
if (MArch == 0) {
std::cerr << argv[0] << ": error auto-selecting target for module '"
<< Err << "'. Please use the -march option to explicitly "
<< "pick a target.\n";
return 1;
}
}
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
if (MCPU.size() || MAttrs.size()) {
SubtargetFeatures Features;
Features.setCPU(MCPU);
for (unsigned i = 0; i != MAttrs.size(); ++i)
Features.AddFeature(MAttrs[i]);
FeaturesStr = Features.getString();
}
std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, FeaturesStr));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
// Figure out where we are going to send the output...
std::ostream *Out = GetOutputStream(argv[0]);
if (Out == 0) return 1;
// If this target requires addPassesToEmitWholeFile, do it now. This is
// used by strange things like the C backend.
if (Target.WantsWholeFile()) {
PassManager PM;
PM.add(new TargetData(*Target.getTargetData()));
if (!NoVerify)
PM.add(createVerifierPass());
// Ask the target to add backend passes as necessary.
if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, Fast)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
PM.run(mod);
} else {
// Build up all of the passes that we want to do to the module.
FunctionPassManager Passes(new ExistingModuleProvider(M.get()));
Passes.add(new TargetData(*Target.getTargetData()));
#ifndef NDEBUG
if (!NoVerify)
Passes.add(createVerifierPass());
#endif
// Ask the target to add backend passes as necessary.
MachineCodeEmitter *MCE = 0;
switch (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
default:
assert(0 && "Invalid file model!");
return 1;
case FileModel::Error:
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
case FileModel::AsmFile:
break;
case FileModel::MachOFile:
MCE = AddMachOWriter(Passes, *Out, Target);
break;
case FileModel::ElfFile:
MCE = AddELFWriter(Passes, *Out, Target);
break;
}
if (Target.addPassesToEmitFileFinish(Passes, MCE, Fast)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
Passes.doInitialization();
// Run our queue of passes all at once now, efficiently.
// TODO: this could lazily stream functions out of the module.
for (Module::iterator I = mod.begin(), E = mod.end(); I != E; ++I)
if (!I->isDeclaration())
Passes.run(*I);
Passes.doFinalization();
}
// Delete the ostream if it's not a stdout stream
if (Out != &std::cout) delete Out;
return 0;
} catch (const std::string& msg) {
std::cerr << argv[0] << ": " << msg << "\n";
} catch (...) {
std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
return 1;
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
if (MCPU.size() || MAttrs.size()) {
SubtargetFeatures Features;
Features.setCPU(MCPU);
for (unsigned i = 0; i != MAttrs.size(); ++i)
Features.AddFeature(MAttrs[i]);
FeaturesStr = Features.getString();
}
std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, FeaturesStr));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
// Figure out where we are going to send the output...
std::ostream *Out = GetOutputStream(argv[0]);
if (Out == 0) return 1;
// If this target requires addPassesToEmitWholeFile, do it now. This is
// used by strange things like the C backend.
if (Target.WantsWholeFile()) {
PassManager PM;
PM.add(new TargetData(*Target.getTargetData()));
if (!NoVerify)
PM.add(createVerifierPass());
// Ask the target to add backend passes as necessary.
if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, Fast)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
PM.run(mod);
} else {
// Build up all of the passes that we want to do to the module.
FunctionPassManager Passes(new ExistingModuleProvider(M.get()));
Passes.add(new TargetData(*Target.getTargetData()));
#ifndef NDEBUG
if (!NoVerify)
Passes.add(createVerifierPass());
#endif
// Ask the target to add backend passes as necessary.
MachineCodeEmitter *MCE = 0;
switch (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
default:
assert(0 && "Invalid file model!");
return 1;
case FileModel::Error:
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
case FileModel::AsmFile:
break;
case FileModel::MachOFile:
MCE = AddMachOWriter(Passes, *Out, Target);
break;
case FileModel::ElfFile:
MCE = AddELFWriter(Passes, *Out, Target);
break;
}
if (Target.addPassesToEmitFileFinish(Passes, MCE, Fast)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
if (Out != &std::cout) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
Passes.doInitialization();
// Run our queue of passes all at once now, efficiently.
// TODO: this could lazily stream functions out of the module.
for (Module::iterator I = mod.begin(), E = mod.end(); I != E; ++I)
if (!I->isDeclaration())
Passes.run(*I);
Passes.doFinalization();
}
// Delete the ostream if it's not a stdout stream
if (Out != &std::cout) delete Out;
return 0;
}