mutated by recursive simplification.  This also enhances
ReplaceAndSimplifyAllUses to actually do a real RAUW
at the end of it, which updates any value handles
pointing to "From" to start pointing to "To".  This
seems useful for debug info and random other VH users.

llvm-svn: 108415

it *changing* the things it replaces, not just causing them
to drop to null.  There is no functionality change yet, but 
this is required for a subsequent patch.

llvm-svn: 108414

llvm-svn: 108413

get *very* large, but we only need it to be the size of the number of pregs.

llvm-svn: 108412

get *very* large, but we only need it to be the size of thenumber of pregs.

llvm-svn: 108411

llvm-svn: 108409

llvm-svn: 108408

llvm-svn: 108407

llvm-svn: 108401

llvm-svn: 108396

follow on to r103765

llvm-svn: 108390

llvm-svn: 108389

llvm-svn: 108387

instructions use different values (e.g., 2-byte or 4-byte alignment).
Also fix ARMInstPrinter to print these alignments as bits instead of bytes.

llvm-svn: 108386

lowering atomics. This will allow those copies to still be coalesced after
TII::isMoveInstr is removed.

llvm-svn: 108385

This fixes a "usr_junk" verification failure when installing into /usr.

llvm-svn: 108384

Simplify some things in the process.

llvm-svn: 108382

llvm-svn: 108381

Add instcombine transforms to optimize tests of multiple bits of the same value into a single larger comparison.

llvm-svn: 108378

llvm-svn: 108371

llvm-svn: 108370

independent of the order that isel happens to visit the dbg_declare
intrinsics. This fixes a bug in which the formal arguments were
being printed in reverse order, now that fast isel is going bottom up.

llvm-svn: 108369

llvm-svn: 108368

DIRS list, so it does no good to filter it from PARALLEL_DIRS), and replace
it with a check to disable building the shared library version of edis when
the flag is set.  Disabling it entirely does not work because MC uses it now.

llvm-svn: 108367

llvm-svn: 108366

llvm-svn: 108365

llvm-svn: 108364

llvm-svn: 108362

llvm-svn: 108358

llvm-svn: 108357

"bonus" instruction to be speculatively executed.  Add a heuristic to
ensure we're not tripping up out-of-order execution by checking that this bonus
instruction only uses values that were already guaranteed to be available.

This allows us to eliminate the short circuit in (x&1)&&(x&2).

llvm-svn: 108351

llvm-svn: 108343

patch by Michael Spencer!

llvm-svn: 108342

in the literal field of an instruction. E.g.,
long long foo(long long a) {
  return a - 734439407618LL;
}

rdar://7038284

llvm-svn: 108339

it can look past points where a debugger might modify user variables.

llvm-svn: 108336

llvm-svn: 108334

Patch by Brian Lucas. PR7636.

llvm-svn: 108332

just use memset to zero the entire struct.

llvm-svn: 108330

llvm-svn: 108328

address cannot be allocated a register is in 32-bit mode where the first
three arguments are marked inreg. In that case EAX, EDX, and ECX will be
used for argument passing.

This fixes PR7610.

llvm-svn: 108327