llvm-svn: 120454

AA and MD pass info instead of using getAnalysis<> all over.

llvm-svn: 120453

llvm-svn: 120452

llvm-svn: 120451

llvm-svn: 120449

llvm-svn: 120447

now that DSE hacks on them.  This fixes a regression I introduced,
by generalizing DSE to hack on transfers.

llvm-svn: 120445

llvm-svn: 120442

llvm-svn: 120439

rdar://8685712

llvm-svn: 120438

and use this to disable a specific optimization.  Patch by Micah Villmow!

llvm-svn: 120435

llvm-svn: 120423

llvm-svn: 120416

llvm-svn: 120415

llvm-svn: 120413

it.

llvm-svn: 120412

While I'm there, clean up too many \n even for me.

llvm-svn: 120411

llvm-svn: 120410

certainly be made more generic. But it does allow us to parse something like:

          ldr     r3, [r2, r4]

correctly in Thumb mode.

llvm-svn: 120408

support register and register-immediate addressing mode

todo: immediate and register-register addressing mode
llvm-svn: 120407

about pairs of AA::Location's instead of looking for MemDep's
"Def" predicate.  This is more powerful and general, handling
memset/memcpy/store all uniformly, and implementing PR8701 and
probably obsoleting parts of memcpyoptimizer.

This also fixes an obscure bug with init.trampoline and i8
stores, but I'm not surprised it hasn't been hit yet.  Enhancing
init.trampoline to carry the size that it stores would allow
DSE to be much more aggressive about optimizing them.

llvm-svn: 120406

Fixes PR8573.

llvm-svn: 120404

llvm-svn: 120398

llvm-svn: 120391

This analysis is going to run immediately after LiveIntervals. It will stay
alive during register allocation and keep track of user variables mentioned in
DBG_VALUE instructions.

When the register allocator is moving values between registers and the stack, it
is very hard to keep track of DBG_VALUE instructions. We usually get it wrong.
This analysis maintains a data structure that makes it easy to update DBG_VALUE
instructions.

llvm-svn: 120385

is trivially dead, since these have side effects.  This makes the
(misnamed) MemoryUseIntrinsic class dead, so remove it.

llvm-svn: 120382

llvm-svn: 120381

llvm-svn: 120380

remove an actively-wrong comment.

llvm-svn: 120378

It can be seriously improved, but at least now it isn't intertwined
with the other logic.

llvm-svn: 120377

llvm-svn: 120372

llvm-svn: 120371

queried location doesn't overlap the source, and add a testcase.

llvm-svn: 120370

able to match this yet.

llvm-svn: 120369

contains "ref".

Enhance DSE to use a modref query instead of a store-specific hack
to generalize the "ignore may-alias stores" optimization to handle
memset and memcpy.

llvm-svn: 120368

and which are pseudos.

llvm-svn: 120366

llvm-svn: 120365

llvm-svn: 120364

stores, fix and add a testcase.

llvm-svn: 120363

llvm-svn: 120362