Add lto_codegen_set_assembler_path() API which allows the linker to specify the
path to the assembler tool to run.  When assembler is used (instead of compiler)
different command line options are used.
Add LTO_API_VERSION #define so clients (linkers) can conditionalize use of new APIs.

llvm-svn: 72823

Move setRelocationModel() to be called before TargetMachine is instantiated.

llvm-svn: 72816

 - This matches llvm-ld.

It took a bit of archeology to figure out what the right thing to do was
(whether this was intentionally added or intentionally removed). My final
conclusion is that Chris added this intentionally here:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=16913
but the changes weren't propogated to llvm-ld until here:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=34058
which was after lto.cpp had been cloned off (of llvm-ld), here:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=29494

From the commit message, it looks like the motivation for running global opt
again is because we ran it prior to inlining. Based on that I updated the
comment and also only run the pass if we actually ran the inliner.

Chris, please review.

llvm-svn: 72811

 - I know it sounds crazy, but I think all the pass lists are now coalesced into
   StandardPasses.h.

llvm-svn: 72805

run when assembling.

Wire this up to the gold plugin. You can now pass --plugin-opt gcc=/foo/bar/gcc
and it will run that gcc instead of looking for it on the path.

llvm-svn: 70490

llvm-svn: 70445

which better identifies what the optimization is doing. And is more flexible for
future uses.

llvm-svn: 70440

llvm-svn: 70411

llvm-svn: 68229

llvm-svn: 65508

off in libLTO.

llvm-svn: 65310

llvm-svn: 64835

The debugger sometimes lookup dynamically in the runtime to find ivar info of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF.

Add support for two additional DWARF attributes to encode Objective-C runtime version number.

llvm-svn: 64834

Document raw_fd_ostream's treatment of "-".

llvm-svn: 59219

llvm-svn: 58731

llvm-svn: 55120

llvm-svn: 55092

Remove GCSE, ValueNumbering, and LoadValueNumbering.  These have been deprecated for almost a year; it's finally time for them to go away.

llvm-svn: 54822

llvm-svn: 53249

llvm-svn: 53119

Rename new lto2 tool as lto.
lto2->lto

llvm-svn: 52912

them back to registers!

llvm-svn: 52729

llvm-svn: 52470

other) feature information. The workaround is inelegant and could be cleaned up
if this information were available some other way (say, in the IR).

llvm-svn: 52447

remove the StripSymbolsPass.  This should not be done by default in libLTO.dylib.  The linker will remove the symbol names if needed after LTO is done

llvm-svn: 51722

llvm-svn: 51611

llvm-svn: 51605

llvm-svn: 50097

llvm-svn: 50081

llvm-svn: 50036

llvm-svn: 50028

Dale fixed EH.

llvm-svn: 49192

start of a filename, not a filename+length.  All clients can produce a
null terminated name, and the system api's require null terminated 
strings anyway.

llvm-svn: 49041

llvm-svn: 47695

first commit of new LTO system.  It is not hooked up in the llvm/tools/Makefile, so no one will build it be default yet

llvm-svn: 47621