llvm-svn: 7360

* Removed unused global and member variables
* Fixed comments (CodeGeneratorBug.cpp)
* Check for possibly failing GCC::create() and CBE::create()
* Remove generated files after diffing the output (e.g., shared object)
* Instead of using std::for_each, use explicit loops as std::for_each may
  duplicate the functor, and ours carries state
* Changed member var from cl::opt<std::string> to just std::string
* Fixed doxygen comments
* Fixed string comparisons to use [ str.empty() ] instead of [ str == "" ]
* Cache instances of CBE and GCC in BugDriver across compilations and executions
  while testing tools.

llvm-svn: 7302

The C backend is assumed correct and is used to generate shared objects to be
loaded by the other two code generators.

LLC debugging should be functional now, LLI needs a few more additions to work,
the major one is renaming of external functions to call the JIT lazy function
resolver.

Bugpoint now has a command-line switch -mode with options 'compile' and
'codegen' to debug appropriate portions of tools.

ExecutionDriver.cpp: Added implementations of AbstractInterpreter for LLC and
GCC, broke out common code within other tools, and added ability to generate C
code with CBE individually, without executing the program, and the GCC tool can
generate executables shared objects or executables.

If no reference output is specified to Bugpoint, it will be generated with CBE,
because it is already assumed to be correct for the purposes of debugging using
this method. As a result, many functions now accept as an optional parameter a
shared object to be loaded in, if specified.

llvm-svn: 7293

llvm-svn: 7223

llvm-svn: 7210

x86 or Sparc, LLC will automatically default to that platform, no guessing
required. On another platform, it will default to `noarch' and will have to
guess which architecture to compile to.

llvm-svn: 7207

llvm-svn: 7202

llvm-svn: 7173

llvm-svn: 7139

llvm-svn: 7122

* Setting ENABLE_X86_JIT or ENABLE_SPARC_JIT on the `make' command-line will
  force the inclusion of that JIT on a different architecture
* If neither JIT is enabled (e.g., compiling on a different architecture), the
  -march option will not be available to LLI.
* As a side effect of the $ARCH variable, the Sparc LLI can now link just a bit
  faster by not including the x86 library.

llvm-svn: 7070

system.

llvm-svn: 7014

ALL of the global ctor/dtor stuff if it is not used!

llvm-svn: 6916

Move the instcombine pass before globaldce, so that if globals are made dead by instcombine, that they can be deleted.

llvm-svn: 6910

llvm-svn: 6897

llvm-svn: 6896

Other minor reorganizations

llvm-svn: 6849

llvm-svn: 6799

instcombine does this

llvm-svn: 6787

llvm-svn: 6780

 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.

llvm-svn: 6776

llvm-svn: 6772

llvm-svn: 6770

it is needed.

llvm-svn: 6753

llvm-svn: 6748

llvm-svn: 6747

llvm-svn: 6746

link in the X86 JIT either, but this makes testing easier.

For some reason, the sparc JIT was breaking the X86 JIT when it was linked in. :(

llvm-svn: 6745

llvm-svn: 6743

llvm-svn: 6742

optimized INTO an alloca

llvm-svn: 6727

llvm-svn: 6726

so that we can easily change its use to be conditional on the result of
an autoconf test later.

llvm-svn: 6723

llvm-svn: 6688

llvm-svn: 6686

llvm-svn: 6631

llvm-svn: 6533

llvm-svn: 6532

llvm-svn: 6485

llvm-svn: 6442