global declared symbols are initialized with references from other global
symbols.

llvm-svn: 76540

llvm-svn: 76536

Is this really a winning transformation?
fold (shl (srl x, c1), c2) -> (shl (and x, (shl -1, c1)), (sub c2, c1)) or                                                                              
                              (srl (and x, (shl -1, c1)), (sub c1, c2))

llvm-svn: 76535

llvm-svn: 76533

- SYSCALL (normal fast system call instruction) [0f 05]
- SYSENTER (system call entry instruction) [0f 34]
- SYSEXIT (system call exit instruction) [0f 35]
- SYSEXIT64 (system call exit instruction to 64-bit user code) [REX.W 0f 35]
- SYSRET (system call return instruction) [0f 07]

Patch by Sean Callanan.

llvm-svn: 76528

as they aren't currently prepared to handle complicated overflow
cases.

llvm-svn: 76524

llvm-svn: 76523

llvm-svn: 76521

llvm-svn: 76520

llvm-svn: 76519

llvm-svn: 76517

llvm-svn: 76505

by determining if (B pred (B-A)) is known, as it doesn't handle
overflow correctly.

llvm-svn: 76504

flags set properly.  (hasMemory is clearly irrelevant
when matching 'i', I don't understand what this was
supposed to be doing.)
gcc.apple/asm-block-25.c (test passed before by
accident, but generated code was wrong)

llvm-svn: 76503

to a place where it affects everything.  Occurs
only on calls AFAIK.

llvm-svn: 76502

llvm-svn: 76496

llvm-svn: 76492

llvm-svn: 76490

llvm-svn: 76489

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

llvm-svn: 76486

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

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: 76456

llvm-svn: 76455

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

llvm-svn: 76453

llvm-svn: 76445

llvm-svn: 76442

llvm-svn: 76441

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: 76431

Hide the DOUT static variable behind a function interface.

llvm-svn: 76425

llvm-svn: 76424

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

llvm-svn: 76414