[llvm-commits] CVS: llvm/tools/llc/Makefile llc.cpp
John Criswell
criswell at choi.cs.uiuc.edu
Thu Jun 26 16:43:54 PDT 2003
Changes in directory llvm/tools/llc:
Makefile updated: 1.35.2.1 -> 1.35.2.2
llc.cpp updated: 1.73 -> 1.73.2.1
---
Log message:
Merged with mainline on Thursday, June 26, 2003.
---
Diffs of the changes:
Index: llvm/tools/llc/Makefile
diff -u llvm/tools/llc/Makefile:1.35.2.1 llvm/tools/llc/Makefile:1.35.2.2
--- llvm/tools/llc/Makefile:1.35.2.1 Mon Jun 23 14:04:50 2003
+++ llvm/tools/llc/Makefile Thu Jun 26 16:36:12 2003
@@ -2,6 +2,7 @@
TOOLNAME = llc
USEDLIBS = mapping \
sparc \
+ x86 \
regalloc \
sched \
select \
@@ -11,13 +12,14 @@
target.a \
livevar \
transforms.a \
- scalaropts.a \
+ scalaropts.a \
analysis.a \
transformutils.a \
bcreader \
- bcwriter \
+ bcwriter \
vmcore \
support
+TOOLLINKOPTS = $(PLATFORMLIBDL)
include $(LEVEL)/Makefile.common
Index: llvm/tools/llc/llc.cpp
diff -u llvm/tools/llc/llc.cpp:1.73 llvm/tools/llc/llc.cpp:1.73.2.1
--- llvm/tools/llc/llc.cpp:1.73 Thu Jun 5 15:51:10 2003
+++ llvm/tools/llc/llc.cpp Thu Jun 26 16:36:12 2003
@@ -1,6 +1,6 @@
-//===-- llc.cpp - Implement the LLVM Compiler -----------------------------===//
+//===-- llc.cpp - Implement the LLVM Native Code Generator ----------------===//
//
-// This is the llc compiler driver.
+// This is the llc code generator.
//
//===----------------------------------------------------------------------===//
@@ -8,31 +8,14 @@
#include "llvm/Target/TargetMachineImpls.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Scalar.h"
-#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
-#include "llvm/Support/PassNameParser.h"
#include "Support/CommandLine.h"
#include "Support/Signals.h"
#include <memory>
#include <fstream>
-//------------------------------------------------------------------------------
-// Option declarations for LLC.
-//------------------------------------------------------------------------------
-
-// Make all registered optimization passes available to llc. These passes
-// will all be run before the simplification and lowering steps used by the
-// back-end code generator, and will be run in the order specified on the
-// command line. The OptimizationList is automatically populated with
-// registered Passes by the PassNameParser.
-//
-static cl::list<const PassInfo*, bool,
- FilteredPassNameParser<PassInfo::Optimization> >
-OptimizationList(cl::desc("Optimizations available:"));
-
-
// 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.
@@ -45,13 +28,14 @@
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
-static cl::opt<bool>
-DisableStrip("disable-strip",
- cl::desc("Do not strip the LLVM bytecode included in the executable"));
-
-static cl::opt<bool>
-DumpAsm("d", cl::desc("Print bytecode before native code generation"),
- cl::Hidden);
+enum ArchName { noarch, x86, Sparc };
+
+static cl::opt<ArchName>
+Arch("march", cl::desc("Architecture to generate assembly for:"), cl::Prefix,
+ cl::values(clEnumVal(x86, " IA-32 (Pentium and above)"),
+ clEnumValN(Sparc, "sparc", " SPARC V9"),
+ 0),
+ cl::init(noarch));
// GetFileNameRoot - Helper function to get the basename of a filename...
static inline std::string
@@ -69,73 +53,84 @@
}
-//===---------------------------------------------------------------------===//
-// Function main()
-//
-// Entry point for the llc compiler.
-//===---------------------------------------------------------------------===//
-
-int
-main(int argc, char **argv)
-{
+// main - Entry point for the llc compiler.
+//
+int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
- // Allocate a target... in the future this will be controllable on the
- // command line.
- std::auto_ptr<TargetMachine> target(allocateSparcTargetMachine());
- assert(target.get() && "Could not allocate target machine!");
+ // Load the module to be compiled...
+ std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
+ if (M.get() == 0) {
+ std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
+ return 1;
+ }
+ Module &mod = *M.get();
+ // Allocate target machine. First, check whether the user has
+ // explicitly specified an architecture to compile for.
+ unsigned Config = (mod.isLittleEndian() ? TM::LittleEndian : TM::BigEndian)|
+ (mod.has32BitPointers() ? TM::PtrSize32 : TM::PtrSize64);
+ TargetMachine* (*TargetMachineAllocator)(unsigned) = 0;
+ switch (Arch) {
+ case x86:
+ TargetMachineAllocator = allocateX86TargetMachine;
+ break;
+ case Sparc:
+ TargetMachineAllocator = allocateSparcTargetMachine;
+ break;
+ default:
+ // Decide what the default target machine should be, by looking at
+ // the module. This heuristic (ILP32, LE -> IA32; LP64, BE ->
+ // SPARCV9) is kind of gross, but it will work until we have more
+ // sophisticated target information to work from.
+ if (mod.isLittleEndian() && mod.has32BitPointers()) {
+ TargetMachineAllocator = allocateX86TargetMachine;
+ } else if (mod.isBigEndian() && mod.has64BitPointers()) {
+ TargetMachineAllocator = allocateSparcTargetMachine;
+ } else {
+ assert(0 && "You must specify -march; I could not guess the default");
+ }
+ break;
+ }
+ std::auto_ptr<TargetMachine> target((*TargetMachineAllocator)(Config));
+ assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
const TargetData &TD = Target.getTargetData();
- // Load the module to be compiled...
- std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
- if (M.get() == 0)
- {
- std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
- return 1;
- }
-
// Build up all of the passes that we want to do to the module...
PassManager Passes;
Passes.add(new TargetData("llc", TD.isLittleEndian(), TD.getPointerSize(),
TD.getPointerAlignment(), TD.getDoubleAlignment()));
- // Create a new optimization pass for each one specified on the command line
- // Deal specially with tracing passes, which must be run differently than opt.
- //
- for (unsigned i = 0; i < OptimizationList.size(); ++i) {
- const PassInfo *Opt = OptimizationList[i];
-
- // handle other passes as normal optimization passes
- if (Opt->getNormalCtor())
- Passes.add(Opt->getNormalCtor()());
- else if (Opt->getTargetCtor())
- Passes.add(Opt->getTargetCtor()(Target));
- else
- std::cerr << argv[0] << ": cannot create pass: "
- << Opt->getPassName() << "\n";
- }
-
- // Replace malloc and free instructions with library calls.
- // Do this after tracing until lli implements these lib calls.
- // For now, it will emulate malloc and free internally.
- // FIXME: This is sparc specific!
- Passes.add(createLowerAllocationsPass());
-
- // If LLVM dumping after transformations is requested, add it to the pipeline
- if (DumpAsm)
- Passes.add(new PrintFunctionPass("Code after xformations: \n", &std::cerr));
-
- // Strip all of the symbols from the bytecode so that it will be smaller...
- if (!DisableStrip)
- Passes.add(createSymbolStrippingPass());
-
// Figure out where we are going to send the output...
std::ostream *Out = 0;
- if (OutputFilename != "")
- { // Specified an output filename?
+ if (OutputFilename != "") {
+ if (OutputFilename != "-") {
+ // Specified an output filename?
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ std::cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists!\n"
+ << "Use -f command line argument to force output\n";
+ return 1;
+ }
+ Out = new std::ofstream(OutputFilename.c_str());
+
+ // Make sure that the Out file gets unlink'd from the disk if we get a
+ // SIGINT
+ RemoveFileOnSignal(OutputFilename);
+ } else {
+ Out = &std::cout;
+ }
+ } else {
+ if (InputFilename == "-") {
+ OutputFilename = "-";
+ Out = &std::cout;
+ } else {
+ OutputFilename = GetFileNameRoot(InputFilename);
+ OutputFilename += ".s";
+
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
std::cerr << argv[0] << ": error opening '" << OutputFilename
@@ -143,52 +138,28 @@
<< "Use -f command line argument to force output\n";
return 1;
}
+
Out = new std::ofstream(OutputFilename.c_str());
-
+ if (!Out->good()) {
+ std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
+ delete Out;
+ return 1;
+ }
+
// Make sure that the Out file gets unlink'd from the disk if we get a
// SIGINT
RemoveFileOnSignal(OutputFilename);
}
- else
- {
- if (InputFilename == "-")
- {
- OutputFilename = "-";
- Out = &std::cout;
- }
- else
- {
- std::string OutputFilename = GetFileNameRoot(InputFilename);
- OutputFilename += ".s";
-
- if (!Force && std::ifstream(OutputFilename.c_str()))
- {
- // If force is not specified, make sure not to overwrite a file!
- std::cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists!\n"
- << "Use -f command line argument to force output\n";
- return 1;
- }
-
- Out = new std::ofstream(OutputFilename.c_str());
- if (!Out->good())
- {
- std::cerr << argv[0] << ": error opening " << OutputFilename
- << "!\n";
- delete Out;
- return 1;
- }
-
- // Make sure that the Out file gets unlink'd from the disk if we get a
- // SIGINT
- RemoveFileOnSignal(OutputFilename);
- }
- }
+ }
- // Ask the target to add backend passes as neccesary
+ // Ask the target to add backend passes as necessary
if (Target.addPassesToEmitAssembly(Passes, *Out)) {
std::cerr << argv[0] << ": target '" << Target.getName()
- << " does not support static compilation!\n";
+ << "' does not support static compilation!\n";
+ if (Out != &std::cout) delete Out;
+ // And the Out file is empty and useless, so remove it now.
+ std::remove(OutputFilename.c_str());
+ return 1;
} else {
// Run our queue of passes all at once now, efficiently.
Passes.run(*M.get());
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