Re-apply 75490, 75806 and 76177 with fixes and tests.  Efficiency comes
next.

llvm-svn: 76486

llvm-svn: 76485

llvm-svn: 76480

"LinkerPrivatePrefix". It seems to have been used in only one place before I
started this "linker_private" business. I'm thinking that a rename is in
order...

llvm-svn: 76479

exact sdiv flags.

llvm-svn: 76475

llvm-svn: 76472

as it no longer depends upon two different enums being kept in sync with each
other.

llvm-svn: 76465

SDiv is a binary operation that can overflow.

llvm-svn: 76464

the parsing of the .dump and .load should be done in the assembly parser and
not have any need for an MCStreamer API.  Changed the code for now so these
just produce an error saying these specific directives are not yet implemented
since they are likely no longer used and may never need to be implemented.

llvm-svn: 76462

 - This provides the AsmLexer interface to the target specific assembly parsers.

llvm-svn: 76460

Fix some sub-reg coalescing bugs where the coalescer wasn't updating the resulting interval's register class.

llvm-svn: 76458

llvm-svn: 76457

llvm-svn: 76456

llvm-svn: 76455

 - This provides the AsmParser interface to the target specific assembly
   parsers.

llvm-svn: 76453

llvm-svn: 76449

llvm-svn: 76447

llvm-svn: 76445

llvm-svn: 76442

llvm-svn: 76441

for noticing this.

llvm-svn: 76440

llvm-svn: 76439

llvm-svn: 76438

Getelementptrs that are defined to wrap are virtually useless to
optimization, and getelementptrs that are undefined on any kind
of overflow are too restrictive -- it's difficult to ensure that
all intermediate addresses are within bounds. I'm going to take
a different approach.

Remove a few optimizations that depended on this flag.

llvm-svn: 76437

llvm-svn: 76433

For remote execution, must cd to the executable directory since the exe expects to find a dylib in the CWD ('.').

llvm-svn: 76432

llvm-svn: 76431

llvm-svn: 76427

Hide the DOUT static variable behind a function interface.

llvm-svn: 76425

llvm-svn: 76424

llvm-svn: 76423

llvm-svn: 76422

are referenced, ignore the relocation entry and patch the relocatable field with
the computed symbol offset directly

llvm-svn: 76414

 - Sheesh.

llvm-svn: 76402

llvm-svn: 76401

doesn't cause ".no_dead_strip" to be emitted on darwin.

llvm-svn: 76399

llvm-svn: 76398

llvm-svn: 76397

llvm-svn: 76396

llvm-svn: 76394