same as a normal i80 {low64, high16} rather
than its own {high64, low16}.  A depressing number
of places know about this; I think I got them all.
Bitcode readers and writers convert back to the old
form to avoid breaking compatibility.

llvm-svn: 67562

a data dependency on the load node, so it really needs a
data-dependence edge to the load node, even if the load previously
existed.

And add a few comments.

llvm-svn: 67554

llvm-svn: 67544

actually have uses, which reflects the way it's used.

llvm-svn: 67540

in an SUnit, instead of just the first one. This fix is needed
by some upcoming scheduler changes.

llvm-svn: 67531

defs, regardless of whether they are actually used.

llvm-svn: 67528

explicitly flush it.

llvm-svn: 67526

llvm-svn: 67524

llvm-svn: 67523

llvm-svn: 67518

Model inline asm constraint which ties an input to an output register as machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies.

llvm-svn: 67512

Do not fold away subreg_to_reg if the source register has a sub-register index. That means the source register is taking a sub-register of a larger register. e.g. On x86
%RAX<def> = ...
%RAX<def> = SUBREG_TO_REG 0, %EAX:3<kill>, 3
The first def is defining RAX, not EAX so the top bits were not zero-extended.

llvm-svn: 67511

llvm-svn: 67510

were when we came around, not to their default handler.  This 
should fix PR3848

llvm-svn: 67509

llvm-svn: 67508

llvm-svn: 67507

i8 return values.

llvm-svn: 67502

llvm-svn: 67454

unneeded bitcast is requested.  This is common for frontends who just unconditionally
cast even if the target is often the right type already.  THis prevents going into
getFoldedCast which switches on the opcode and does a bunch of other stuff before
doing the same opzn.

llvm-svn: 67435

Handle odd registers allocation in FGR32.

llvm-svn: 67422

llvm-svn: 67416

llvm-svn: 67412

shifts together.  This fixes PR3851.

llvm-svn: 67411

linkage: the value may be replaced with something
different at link time.  (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).

llvm-svn: 67407

llvm-svn: 67400

For inline asm output operand that matches an input. Encode the input operand index in the high bits.

llvm-svn: 67387

llvm-svn: 67373

llvm-svn: 67372

Removed unncessary code. No functionality change.

llvm-svn: 67371

llvm-svn: 67370

llvm-svn: 67364

for those architectures that support the instruction.

llvm-svn: 67363

(return or unreachable) is a kill.

llvm-svn: 67357

 - Make type declarations match the struct/class keyword of the definition.
 - Move AddSignalHandler into the namespace where it belongs.
 - Correctly call functions from template base.
 - Some other small changes.
With this patch, LLVM and Clang should build properly and with far less noise under VS2008.

llvm-svn: 67347

llvm-svn: 67335

the inliner; prevents nondeterministic behavior
when the same address is reallocated.
Don't build call graph nodes for debug intrinsic calls;
they're useless, and there were typically a lot of them.

llvm-svn: 67311

the set of blocks in which values are used, the set in which
values are live-through, and the set in which values are
killed. For the live-through and killed sets, conservative
approximations are used.

llvm-svn: 67309

llvm-svn: 67307

and was deleting Instructions without clearing the
corresponding map entry.  This led to nondeterministic
behavior if the same address got allocated to another
Instruction within a short time.

llvm-svn: 67306

is the first in its block.  This is PR3842.

llvm-svn: 67304