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lib/Target/Sparc/Sparc.cpp:

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Move LowerAllocations, PrintFunction, and SymbolStripping passes, and
  the corresponding -disable-strip and -d options, over here to the SPARC
  target-specific bits of llc. Rename -d to -dump-asm.

tools/llc/Makefile:
 Reindent. Add x86 library so that llc compiles again.

tools/llc/llc.cpp:
 Remove support for running arbitrary optimization passes. Use opt instead.
 Remove LowerAllocations, PrintFunction, and SymbolStripping passes, as noted
  above.
 Allow user to select a backend (x86 or SPARC); default to guessing from
  the endianness/pointer size of the input bytecode file.
 Fix typos.
 Delete empty .s file and exit with error status if target does not support
  static compilation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6776 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2003-06-18 21:14:23 +00:00
parent baed07333f
commit 2e2f2dcd6a
3 changed files with 72 additions and 63 deletions
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23
lib/Target/SparcV9/SparcV9TargetMachine.cpp
View File

@ -21,6 +21,7 @@
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/Reoptimizer/Mapping/MappingInfo.h"
#include "Support/CommandLine.h"
#include "llvm/Assembly/PrintModulePass.h"
static const unsigned ImplicitRegUseList[] = { 0 }; /* not used yet */
// Build the MachineInstruction Description Array...
@ -46,6 +47,14 @@ static cl::opt<bool> DisableSched("nosched",
static cl::opt<bool> DisablePeephole("nopeephole",
cl::desc("Disable peephole optimization pass"));
static cl::opt<bool>
DisableStrip("disable-strip",
cl::desc("Do not strip the LLVM bytecode included in the executable"));
static cl::opt<bool>
DumpAsm("dump-asm", cl::desc("Print bytecode before native code generation"),
cl::Hidden);
//----------------------------------------------------------------------------
// allocateSparcTargetMachine - Allocate and return a subclass of TargetMachine
// that implements the Sparc backend. (the llvm/CodeGen/Sparc.h interface)
@ -141,9 +150,21 @@ UltraSparc::UltraSparc()
//
bool UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
{
// The following 3 passes used to be inserted specially by llc.
// Replace malloc and free instructions with library calls.
PM.add(createLowerAllocationsPass());
// If LLVM dumping after transformations is requested, add it to the pipeline
if (DumpAsm)
PM.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)
PM.add(createSymbolStrippingPass());
// FIXME: implement the switch instruction in the instruction selector.
PM.add(createLowerSwitchPass());
// Construct and initialize the MachineFunction object for this fn.
PM.add(createMachineCodeConstructionPass(*this));

5
tools/llc/Makefile
View File

@ -2,6 +2,7 @@ LEVEL = ../..
TOOLNAME = llc
USEDLIBS = mapping \
sparc \
x86 \
regalloc \
sched \
select \
@ -11,11 +12,11 @@ USEDLIBS = mapping \
target.a \
livevar \
transforms.a \
scalaropts.a \
scalaropts.a \
analysis.a \
transformutils.a \
bcreader \
bcwriter \
bcwriter \
vmcore \
support
TOOLLINKOPTS = $(PLATFORMLIBDL)

107
tools/llc/llc.cpp
View File

@ -8,31 +8,19 @@
#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>
#include <cstdio>
//------------------------------------------------------------------------------
// 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 +33,14 @@ OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
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"));
enum ArchName { noarch, x86, Sparc };
static cl::opt<bool>
DumpAsm("d", cl::desc("Print bytecode before native code generation"),
cl::Hidden);
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
@ -80,14 +69,6 @@ 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!");
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)
@ -95,6 +76,38 @@ main(int argc, char **argv)
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();
// Build up all of the passes that we want to do to the module...
PassManager Passes;
@ -102,36 +115,6 @@ main(int argc, char **argv)
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 != "") {
@ -153,7 +136,7 @@ main(int argc, char **argv)
OutputFilename = "-";
Out = &std::cout;
} else {
std::string OutputFilename = GetFileNameRoot(InputFilename);
OutputFilename = GetFileNameRoot(InputFilename);
OutputFilename += ".s";
if (!Force && std::ifstream(OutputFilename.c_str())) {
@ -177,10 +160,14 @@ main(int argc, char **argv)
}
}
// 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());