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43692 Commits

Author SHA1 Message Date
Chris Lattner 6712251f41 Make DeleteDeadInstruction be a static function, move some code around. 
llvm-svn: 120471
 2010-11-30 21:58:14 +00:00
Eric Christopher a964f4de76 Move X86InstrFPStack.td over to PseudoI as well. 
llvm-svn: 120470
 2010-11-30 21:57:32 +00:00
Chris Lattner 51d67ce2ff switch RemoveAccessedObjects to use AliasAnalysis::Location to simplify 
the code.  We now get accurate sizes on Loads, though it surely doesn't
matter in practice.

llvm-svn: 120469
 2010-11-30 21:47:58 +00:00
Chris Lattner f80b39986f two improvements to RemoveAccessedObjects: 
1. if the underlying pointer passed in can be resolved
   to any argument or alloca, then we don't need to scan.
   Previously we would only avoid the scan if the alloca
   or byval was actually considered dead.
2. The dead store processing code is itself completely
   dead and didn't handle volatile stores right anyway,
   so delete it.  This allows simplifying the interface
   to RemoveAccessedObjects.

llvm-svn: 120467
 2010-11-30 21:38:30 +00:00
Eric Christopher a87065807f Migrate X86InstrControl.td to use PseudoI and fix a couple of 80-col violations 
while I'm in there.

llvm-svn: 120466
 2010-11-30 21:37:36 +00:00
Chris Lattner 7fe08b67fa remove the "undead" terminology, which is nonstandard and never 
made sense to me.  We now have a set of dead stack objects, and
they become live when loaded.  Fix a theoretical problem where
we'd pass in the wrong pointer to the alias query.

llvm-svn: 120465
 2010-11-30 21:32:12 +00:00
Chris Lattner 127818d746 move call handling in handleEndBlock up a bit, and simplify it. 
If the call might read all the allocas, stop scanning early.
Convert a vector to smallvector, shrink SmallPtrSet to 16 instead
of 64 to avoid crazy linear scans.

llvm-svn: 120463
 2010-11-30 21:18:46 +00:00
Dale Johannesen d3a58c8fa1 Avoid exponential growth of a table. It feels like 
there should be a better way to do this.  PR 8679.

llvm-svn: 120457
 2010-11-30 20:23:21 +00:00
Owen Anderson 0dc6246fc0 Provide Thumb2 encodings for a few miscellaneous instructions. 
llvm-svn: 120455
 2010-11-30 20:00:01 +00:00
Chris Lattner 60a8b3dab8 various cleanups and code simplification 
llvm-svn: 120454
 2010-11-30 19:48:15 +00:00
Chris Lattner 51c28a93cc make getPointerSize a static function. Add ivars to DSE for 
AA and MD pass info instead of using getAnalysis<> all over.

llvm-svn: 120453
 2010-11-30 19:34:42 +00:00
Chris Lattner 77d79fa25f reduce indentation, clean up TD use a bit. 
llvm-svn: 120452
 2010-11-30 19:28:23 +00:00
Jim Grosbach 233890547d Add FIXME 
llvm-svn: 120451
 2010-11-30 19:25:56 +00:00
Owen Anderson 299382e8cb Add encoding support for Thumb2 PLD and PLI instructions. 
llvm-svn: 120449
 2010-11-30 19:19:31 +00:00
Eric Christopher 78b4efb472 Noticed this on inspection, fix and update some comments. 
llvm-svn: 120447
 2010-11-30 19:14:07 +00:00
Chris Lattner b63ba73b1b enhance isRemovable to refuse to delete volatile mem transfers 
now that DSE hacks on them.  This fixes a regression I introduced,
by generalizing DSE to hack on transfers.

llvm-svn: 120445
 2010-11-30 19:12:10 +00:00
Jim Grosbach 3b4e2ab5f3 Pseudo-ize ARM MOVPCRX 
llvm-svn: 120442
 2010-11-30 18:56:36 +00:00
Owen Anderson ebcd9c9258 Provide encodings for a few more load/store variants. 
llvm-svn: 120439
 2010-11-30 18:38:28 +00:00
Jim Grosbach cd5e30f6c6 Pseudo-ize BX_CALL and friends. Remove dead instruction format classes. 
rdar://8685712

llvm-svn: 120438
 2010-11-30 18:30:19 +00:00
Chris Lattner ea41dfe385 add TLI support indicating that jumps are more expensive than logical operations 
and use this to disable a specific optimization.  Patch by Micah Villmow!

llvm-svn: 120435
 2010-11-30 18:12:52 +00:00
Che-Liang Chiou e9baf13657 ptx: add command-line options for gpu target and ptx version 
llvm-svn: 120423
 2010-11-30 10:14:14 +00:00
Eric Christopher 3a8ae23313 Fix some grammar in comments I noticed. 
llvm-svn: 120416
 2010-11-30 09:11:54 +00:00
Eric Christopher ed13239dc0 This defaults to GenericDomain. 
llvm-svn: 120415
 2010-11-30 09:11:07 +00:00
Jay Foad 15084f085d PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void. 
llvm-svn: 120413
 2010-11-30 09:02:01 +00:00
Eric Christopher ef62f57d4f Implement a PseudoI class and transfer the sse instructions over to use 
it.

llvm-svn: 120412
 2010-11-30 08:57:23 +00:00
Eric Christopher 2d1bcf4aea Fix insertion point in pcmp expander. 
While I'm there, clean up too many \n even for me.

llvm-svn: 120411
 2010-11-30 08:20:21 +00:00
Eric Christopher 1a86e8461a Fix some cleanups from my last patch. 
llvm-svn: 120410
 2010-11-30 08:10:28 +00:00
Bill Wendling 811c936ed5 Add parsing for the Thumb t_addrmode_s4 addressing mode. This can almost 
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
 2010-11-30 07:44:32 +00:00
Che-Liang Chiou d816204056 ptx: add ld instruction 
support register and register-immediate addressing mode

todo: immediate and register-register addressing mode
llvm-svn: 120407
 2010-11-30 07:34:44 +00:00
Chris Lattner 58b779e9c2 Rewrite the main DSE loop to be written in terms of reasoning 
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
 2010-11-30 07:23:21 +00:00
Eric Christopher fa6657cec0 Rewrite mwait and monitor support and custom lower arguments. 
Fixes PR8573.

llvm-svn: 120404
 2010-11-30 07:20:12 +00:00
Anders Carlsson e3ea1cba79 Add a puts optimization that converts puts() to putchar('\n'). 
llvm-svn: 120398
 2010-11-30 06:19:18 +00:00
Chris Lattner 3590ef817c rename a function and reduce some indentation, no functionality change. 
llvm-svn: 120391
 2010-11-30 05:30:45 +00:00
Jakob Stoklund Olesen d4900a644c Stub out a new LiveDebugVariables pass. 
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
 2010-11-30 02:17:10 +00:00
Chris Lattner b438ef236c remove the pointless check of MemoryUseIntrinsic from 
is trivially dead, since these have side effects.  This makes the
(misnamed) MemoryUseIntrinsic class dead, so remove it.

llvm-svn: 120382
 2010-11-30 02:03:47 +00:00
Chris Lattner d540a5d842 strength reduce this. 
llvm-svn: 120381
 2010-11-30 01:56:13 +00:00
Chris Lattner afbc0c2b8c getLocationForDest should work for memset as well. 
llvm-svn: 120380
 2010-11-30 01:48:20 +00:00
Chris Lattner 2227a8a192 rename doesClobberMemory -> hasMemoryWrite to be more specific, and 
remove an actively-wrong comment.

llvm-svn: 120378
 2010-11-30 01:37:52 +00:00
Chris Lattner 9d179d911d clean up handling of 'free', detangling it from everything else. 
It can be seriously improved, but at least now it isn't intertwined
with the other logic.

llvm-svn: 120377
 2010-11-30 01:28:33 +00:00
Bill Wendling ddce9f3757 Minor cleanups. No functional change. 
llvm-svn: 120372
 2010-11-30 00:50:22 +00:00
Bill Wendling 8294a30d54 s/ARM::BRIND/ARM::BX/g to coincide with r120366. 
llvm-svn: 120371
 2010-11-30 00:48:15 +00:00
Chris Lattner 90c4947df7 enhance basicaa to return "Mod" for a memcpy call when the 
queried location doesn't overlap the source, and add a testcase.

llvm-svn: 120370
 2010-11-30 00:43:16 +00:00
Bill Wendling 62718de2b9 Add correct encoding for "bl __aeabi_read_tp". However, the asm matcher isn't 
able to match this yet.

llvm-svn: 120369
 2010-11-30 00:34:08 +00:00
Chris Lattner 9a146372b5 Teach basicaa that memset's modref set is at worst "mod" and never 
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
 2010-11-30 00:28:45 +00:00
Jim Grosbach 027bd47e3e Rename BX/BRIND/etc patterns to clarify which is actually the BX instruction 
and which are pseudos.

llvm-svn: 120366
 2010-11-30 00:24:05 +00:00
Bill Wendling 85a8a72d85 Add some encoding for the adr instruction. Labels still need to be finished. 
llvm-svn: 120365
 2010-11-30 00:18:30 +00:00
Owen Anderson e22c7322b8 Correct Thumb2 encodings for a much wider range of loads and stores. 
llvm-svn: 120364
 2010-11-30 00:14:31 +00:00
Chris Lattner c3c754f750 my previous patch would cause us to start deleting some volatile 
stores, fix and add a testcase.

llvm-svn: 120363
 2010-11-30 00:12:39 +00:00
Jim Grosbach 49408cef39 Make a few more ARM pseudo instructions actually use the PseudoInst base class. 
llvm-svn: 120362
 2010-11-30 00:09:06 +00:00
Bill Wendling ce3d6ca564 Predicate encoding should be withing {}s. And general cleanup. 
llvm-svn: 120361
 2010-11-30 00:08:20 +00:00
Bill Wendling 795f211418 Predicate encoding should be withing {}s. 
llvm-svn: 120360
 2010-11-30 00:05:25 +00:00
Chris Lattner d4f1090948 two changes to DSE that shouldn't affect anything: 
1. Don't bother trying to optimize:

lifetime.end(ptr)
store(ptr)

as it is undefined, and therefore shouldn't exist.

2. Move the 'storing a loaded pointer' xform up, simplifying
  the may-aliased store code.

llvm-svn: 120359
 2010-11-30 00:01:19 +00:00
Bob Wilson 318ce7cb3f Fix the encoding of VLD4-dup alignment. 
The only reasonable way I could find to do this is to provide an alternate
version of the addrmode6 operand with a different encoding function.  Use it
for all the VLD-dup instructions for the sake of consistency.

llvm-svn: 120358
 2010-11-30 00:00:42 +00:00
Bob Wilson 0b27b68164 Rename VLDnDUP instructions with double-spaced registers 
in an attempt to make things a little more consistent.

llvm-svn: 120357
 2010-11-30 00:00:38 +00:00
Bob Wilson 431ac4ef50 Add support for NEON VLD3-dup instructions. 
The encoding for alignment in VLD4-dup instructions is still a work in progress.

llvm-svn: 120356
 2010-11-30 00:00:35 +00:00
Jim Grosbach 9de9a73433 Simplify definitions of the ARM eh.sjlj.*jmp pseudo instructions. 
llvm-svn: 120354
 2010-11-29 23:51:31 +00:00
Jim Grosbach 0c51bb4b25 Parameterize ARMPseudoInst size property. 
llvm-svn: 120353
 2010-11-29 23:48:41 +00:00
Jim Grosbach cb803b043b Add a few missing initializers. 
llvm-svn: 120350
 2010-11-29 23:41:10 +00:00
Chris Lattner b4df1d5a3e prune an llvmcontext include and simplify some code. 
llvm-svn: 120347
 2010-11-29 23:35:33 +00:00
Chris Lattner 6f3a90b549 Generalize the darwin wrapper hack to work with generic macho triples as well as darwin ones. 
llvm-svn: 120346
 2010-11-29 23:29:54 +00:00
Jim Grosbach 32ff5586fc Nuke trailing whitespace. 
llvm-svn: 120344
 2010-11-29 23:18:01 +00:00
Jim Grosbach 9f0356b3cc Nuke a FIXME. No need to be fancier here, as ARM handles constant pools 
locations and formatting specially. rdar://7353441

llvm-svn: 120343
 2010-11-29 23:09:20 +00:00
Owen Anderson 50d662b6cb Provide Thumb2 encodings for basic loads and stores. 
llvm-svn: 120340
 2010-11-29 22:44:32 +00:00
Evan Cheng 9a133f623c Mark Darwin call instructions as using "r7" to prevent the frame-register 
assignment instructions from being moved below / above calls.
rdar://8690640

llvm-svn: 120339
 2010-11-29 22:43:27 +00:00
Jim Grosbach d5cfca1e3d Nuke dead isCodeGenOnly annotation and extraneous comment. 
llvm-svn: 120338
 2010-11-29 22:40:58 +00:00
Jim Grosbach 1883d94630 tidy up. 
llvm-svn: 120335
 2010-11-29 22:38:48 +00:00
Bill Wendling ee7c5659d7 Thumb encodings for conditional moves. 
llvm-svn: 120334
 2010-11-29 22:37:46 +00:00
Jim Grosbach 7ec3d34553 Pseudo-ize Thumb2 jump tables with explicit MC lowering to the raw 
instructions. This simplifies instruction printing and disassembly.

llvm-svn: 120333
 2010-11-29 22:37:40 +00:00
Michael J. Spencer ebad2f9d36 Support: Add PathV2 implementation. 
llvm-svn: 120329
 2010-11-29 22:28:51 +00:00
Bill Wendling 5da8cae9ec Refactor some of the "disassembly-only" instructions into a base class. This 
reduces some code duplication.

llvm-svn: 120326
 2010-11-29 22:15:03 +00:00
Chris Lattner 2e8793482c fix PR8677, patch by Jakub Staszak! 
llvm-svn: 120325
 2010-11-29 21:59:31 +00:00
Eric Christopher 43b0c6d94f Update fastisel for the changes in r120272. 
llvm-svn: 120324
 2010-11-29 21:56:23 +00:00
Frits van Bommel 28218aa8f1 Transform (extractvalue (load P), ...) to (load (gep P, 0, ...)) if the load has no other uses, shrinking the load. 
llvm-svn: 120323
 2010-11-29 21:56:20 +00:00
Jim Grosbach 81af4f9eb1 Rename t2 TBB and TBH instructions to reference that they encode the jump table 
data. Next up, pseudo-izing them.

llvm-svn: 120320
 2010-11-29 21:28:32 +00:00
Owen Anderson ba3a8fa7ab Improving the factoring of several instruction encodings. 
llvm-svn: 120317
 2010-11-29 20:38:48 +00:00
Frits van Bommel a98214de10 Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue. 
llvm-svn: 120316
 2010-11-29 20:36:52 +00:00
Charles Davis 54c9eb6fff Now to chant the magical incantation that will exorcise the System library 
from LLVM forever:

grep -lR "llvm/System" * | grep -v .svn | xargs sed -ie 's#llvm/System#llvm/Support#g'

llvm-svn: 120314
 2010-11-29 19:44:50 +00:00
Bob Wilson 77ab165afe Add support for NEON VLD3-dup instructions. 
llvm-svn: 120312
 2010-11-29 19:35:29 +00:00
Bob Wilson 8022367809 Fix copy-and-paste errors in VLD2-dup scheduling itineraries. 
llvm-svn: 120311
 2010-11-29 19:35:23 +00:00
Jim Grosbach 58bc36a3a9 ARM Pseudo-ize tBR_JTr. 
llvm-svn: 120310
 2010-11-29 19:32:47 +00:00
Owen Anderson e9608b3f01 Thumb2 encodings for MSR and MRS. 
llvm-svn: 120309
 2010-11-29 19:29:15 +00:00
Owen Anderson 2fdf32fa2c Thumb2 encodings for system instructions. 
llvm-svn: 120307
 2010-11-29 19:22:08 +00:00
Owen Anderson b044bc67f4 Thumb2 encodings for branches and IT blocks. 
llvm-svn: 120306
 2010-11-29 18:54:38 +00:00
Jim Grosbach 0591656b13 The ARM BR_JT* pseudos don't need to use the printer jtblock_operand node to 
get the pretty-printer. That's handled explicityly by the MC lowering now.

llvm-svn: 120305
 2010-11-29 18:53:24 +00:00
Michael J. Spencer ab425d8360 I swear I did a make clean and make before committing all this... 
llvm-svn: 120304
 2010-11-29 18:47:54 +00:00
Jim Grosbach 150b1ad7f8 Switch ARM BR_JTm and BR_JTr instructions to be MC-expanded pseudos. 
llvm-svn: 120303
 2010-11-29 18:37:44 +00:00
Michael J. Spencer 4d2e1501ad Missed a spot. 
llvm-svn: 120301
 2010-11-29 18:29:55 +00:00
Michael J. Spencer 447762da85 Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00
Kalle Raiskila 1ff0bfa28f Handle lshr for i128 correctly on SPU also when 
shiftamount > 7.

llvm-svn: 120288
 2010-11-29 14:44:28 +00:00
Kalle Raiskila dc620afd1e Enable PostRA scheduling for SPU. 
This speeds up selected test cases with up to
5% - no slowdowns observed.

llvm-svn: 120286
 2010-11-29 10:30:25 +00:00
Kalle Raiskila 1842ada3ad Allow machine LICM to do its job on SPU. 
-return a sensible value for register pressure
-add pattern to 'ila' instrucion

llvm-svn: 120285
 2010-11-29 10:08:09 +00:00
Kalle Raiskila 427add8f24 Add missing i128 case. 
llvm-svn: 120284
 2010-11-29 09:36:26 +00:00
Chandler Carruth abcab28f9b Add some dead stores to pacify my least favorite GCC warning: may be 
uninitialized. The warning is terrible, has incorrect source locations, and has
a huge false positive rate such as *all* of these.

If anyone has a better solution, please let me know. Alternatively, I'll
happily add -Wno-uninitialized to the -Werror build mode. Maybe I can even do
it *only* when building with GCC instead of Clang.

llvm-svn: 120281
 2010-11-29 01:41:13 +00:00
Bill Wendling 232e52cfb7 Add more Thumb encodings. 
llvm-svn: 120279
 2010-11-29 01:07:48 +00:00
Bill Wendling ccba1a8d95 More Thumb encodings. 
llvm-svn: 120278
 2010-11-29 01:00:43 +00:00
Bill Wendling 9600e97c60 Add Thumb encodings for REV instructions. 
llvm-svn: 120277
 2010-11-29 00:42:50 +00:00
Bill Wendling 775899eb2e Add more Thumb encodings. 
llvm-svn: 120272
 2010-11-29 00:18:15 +00:00
Rafael Espindola e5e1f9ad0f Make EmitIntValue non virtual. 
llvm-svn: 120271
 2010-11-28 23:22:44 +00:00
Rafael Espindola 0710e3771f Forgot the MCPureStreamer::EmitValue in the previous commit. 
llvm-svn: 120270
 2010-11-28 23:13:47 +00:00
Rafael Espindola a084fd6e9d Move EmitValue to MCObjectStreamer. 
llvm-svn: 120269
 2010-11-28 23:08:47 +00:00