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61508 Commits

Author SHA1 Message Date
Dan Gohman 3570f81b1e Move PHIElimination's SplitCriticalEdge for MachineBasicBlocks out 
into a utility routine, teach it how to update MachineLoopInfo, and
make use of it in MachineLICM to split critical edges on demand.

llvm-svn: 106555
 2010-06-22 17:25:57 +00:00
Jakob Stoklund Olesen 9c47dac677 Remove the SimpleJoin optimization from SimpleRegisterCoalescing. 
Measurements show that it does not speed up coalescing, so there is no reason
the keep the added complexity around.

Also clean out some unused methods and static functions.

llvm-svn: 106548
 2010-06-22 16:13:57 +00:00
Dan Gohman 3986af0c5a Split out the code for finding a unique loop predecessor from 
getLoopPreheader into a separate function, for clients which don't
require a proper preheader.

llvm-svn: 106543
 2010-06-22 15:25:42 +00:00
Dan Gohman d2d1ae105d Use pre-increment instead of post-increment when the result is not used. 
llvm-svn: 106542
 2010-06-22 15:08:57 +00:00
Dan Gohman 5666ad7381 Add a comment explaining a non-obvious API. 
llvm-svn: 106539
 2010-06-22 13:57:08 +00:00
Dan Gohman 2ceaa71bdb Add an explicit keyword. 
llvm-svn: 106538
 2010-06-22 13:53:29 +00:00
Dan Gohman f820bd327d Allow "exhaustive" trip count evaluation on phi nodes with all 
constant operands.

llvm-svn: 106537
 2010-06-22 13:15:46 +00:00
Devang Patel f040dec68a Revert 106528. It is causing self host failures. 
llvm-svn: 106529
 2010-06-22 06:14:09 +00:00
Devang Patel b195eb4acf Do not rely on DenseMap slot which can be easily invalidated when DenseMap grows. 
llvm-svn: 106528
 2010-06-22 05:16:56 +00:00
Bob Wilson 6c1fc79cab Revert my change to clone named metadata. Buildbots are complaining. 
--- Reverse-merging r106508 into '.':
U    lib/Transforms/Utils/CloneModule.cpp

llvm-svn: 106521
 2010-06-22 02:08:51 +00:00
Dan Gohman 2370e2fe0f When unfolding a load, avoid assuming which instruction that 
kill and dead flags will end up on.

llvm-svn: 106520
 2010-06-22 02:07:21 +00:00
Devang Patel b6e058da18 Use single interface, using twine, to get named metadata. 
getNamedMetadata().

llvm-svn: 106518
 2010-06-22 01:19:38 +00:00
Evan Cheng 37bb617f8a Tail merging pass shall not break up IT blocks. rdar://8115404 
llvm-svn: 106517
 2010-06-22 01:18:16 +00:00
Devang Patel cbc6fd8493 Discard special LLVM prefix from linkage name. 
llvm-svn: 106516
 2010-06-22 01:06:05 +00:00
Devang Patel ad51735794 Do not rely on Twine temporaries to survive. 
llvm-svn: 106515
 2010-06-22 01:01:58 +00:00
Chris Lattner 60bb7c42a7 make sure to initialize indent_level 
llvm-svn: 106513
 2010-06-22 00:40:26 +00:00
Dan Gohman 851e478e6b Fix the new load-unfolding code to update LiveVariable's dead flags, 
in addition to the kill flags.

llvm-svn: 106512
 2010-06-22 00:32:04 +00:00
Bob Wilson 5f9575c1cd Include named metadata when cloning a module. 
llvm-svn: 106508
 2010-06-22 00:11:03 +00:00
Eric Christopher b2c4a99d52 Fix typo. 
llvm-svn: 106505
 2010-06-21 23:49:08 +00:00
Chris Lattner 64960f55fe add some support for blockaddress. This isn't really enough to be useful, 
but it will cover uses of blockaddress that are actually in a function.

llvm-svn: 106502
 2010-06-21 23:19:36 +00:00
Chris Lattner bb45b964f8 eliminate a mutable global variable, use raw_ostream::indent instead of 
rolling our own.

llvm-svn: 106501
 2010-06-21 23:14:47 +00:00
Chris Lattner a0b8c90870 un-indent a huge amount of code out of an anonymous namespace. 
llvm-svn: 106500
 2010-06-21 23:12:56 +00:00
Bruno Cardoso Lopes b7dadb0e95 revert r106482 
llvm-svn: 106499
 2010-06-21 22:59:03 +00:00
Chris Lattner 26d7950f8f fix several bugs in the tutorial, patch by Kevin Kelley! 
llvm-svn: 106498
 2010-06-21 22:51:14 +00:00
Dan Gohman 3c1b3c61e9 Teach two-address lowering how to unfold a load to open up commuting 
opportunities. For example, this lets it emit this:

   movq (%rax), %rcx
   addq %rdx, %rcx

instead of this:

   movq %rdx, %rcx
   addq (%rax), %rcx

in the case where %rdx has subsequent uses. It's the same number
of instructions, and usually the same encoding size on x86, but
it appears faster, and in general, it may allow better scheduling
for the load.

llvm-svn: 106493
 2010-06-21 22:17:20 +00:00
Bruno Cardoso Lopes 510d9a3404 change parameter name to avoid confusion with global definition 
llvm-svn: 106486
 2010-06-21 21:28:07 +00:00
Bob Wilson 72df24037e sign_extend_inreg needs to be expanded for pre-v6 Thumb as well as ARM. 
Radar 8104310.

llvm-svn: 106484
 2010-06-21 21:27:34 +00:00
Jim Grosbach 523e554afa LEApcrelJT shouldn't be marked as neverHasSideEffects, as we don't want it 
being moved around away from the jump table it references. rdar://8104340

llvm-svn: 106483
 2010-06-21 21:27:27 +00:00
Bruno Cardoso Lopes 374b2195f6 Add unpack and interleave AVX instructions, encoding tests cooming soon 
llvm-svn: 106482
 2010-06-21 21:21:48 +00:00
Evan Cheng 1fb4de8ec5 Fix PR7421: bug in kill transferring logic. It was ignoring loads / stores which have already been processed. 
llvm-svn: 106481
 2010-06-21 21:21:14 +00:00
Chris Lattner 58f3c1f863 This makes example Makefile a lot more like actual 
lib/Transforms/Hello/Makefile, and prevents a lot of errors like "Assertion
`Inserted && "Pass registered multiple times!"' failed"

Patch by Gregory Petrosyan!

llvm-svn: 106471
 2010-06-21 20:36:09 +00:00
Eric Christopher 75d4ecb9c3 Remove isTwoAddress from llvm. 
llvm-svn: 106470
 2010-06-21 20:35:09 +00:00
Chris Lattner 79d2075e4a "This is just a cosmetic change in MCAsmStreamer.cpp/EmitSymbolAttribute: all attributes have now a \t before and after, as done for '.type'. 
This makes the output look consistent, as well as help some third party assemblers expecting the attributes to be in the second column."

Patch by Arnaud de Grandmaison!

llvm-svn: 106469
 2010-06-21 20:35:01 +00:00
Chris Lattner 456102117a fix typos reported by Adam Warner! 
llvm-svn: 106468
 2010-06-21 20:31:30 +00:00
Eric Christopher 6dd51a2bb6 Remove isTwoAddress from SystemZ. 
llvm-svn: 106467
 2010-06-21 20:25:57 +00:00
Eric Christopher d7a7356be6 Remove isTwoAddress from Sparc. 
llvm-svn: 106466
 2010-06-21 20:22:35 +00:00
Eric Christopher c7927f2013 Remove isTwoAddress from Mips. 
llvm-svn: 106465
 2010-06-21 20:19:21 +00:00
Eric Christopher fb008dfa05 Remove isTwoAddress from Blackfin. 
llvm-svn: 106457
 2010-06-21 20:13:37 +00:00
Eric Christopher fa1b54d26e Remove isTwoAddress from MSP430. 
llvm-svn: 106455
 2010-06-21 20:07:30 +00:00
Dan Gohman 2dd1d3d182 Make this test more robust in case LLVM ever decides to align the global 
variable differently.

llvm-svn: 106454
 2010-06-21 19:56:27 +00:00
Dan Gohman dd41bba517 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.

llvm-svn: 106452
 2010-06-21 19:47:52 +00:00
Eric Christopher 0ca648d758 Make 80-column. 
llvm-svn: 106448
 2010-06-21 18:56:55 +00:00
Eric Christopher 98392f69e3 Remove isTwoAddress from PIC16. 
llvm-svn: 106447
 2010-06-21 18:55:01 +00:00
Eric Christopher 2401271217 Remove isTwoAddress from XCore. 
llvm-svn: 106446
 2010-06-21 18:51:38 +00:00
Eric Christopher e159407231 Remove isTwoAddress from Alpha. 
llvm-svn: 106445
 2010-06-21 18:48:55 +00:00
Dan Gohman ffdee30e90 Move several non-performance-critical member functinos out of line. 
llvm-svn: 106444
 2010-06-21 18:46:45 +00:00
Dale Johannesen dd471bbb10 Add missing FileCheck call. 
llvm-svn: 106443
 2010-06-21 18:46:08 +00:00
Devang Patel c8bceaa418 test case for r106438. 
llvm-svn: 106439
 2010-06-21 18:37:23 +00:00
Devang Patel e80de80270 Do not directly use function names to construct new name for named metadata. 
"llvm.dbg.lv.~A" is not a valid name.

llvm-svn: 106438
 2010-06-21 18:36:58 +00:00
Bruno Cardoso Lopes 29a894dd64 Move part of SSE 1 & 2 compare, shuffle and unpack instructions closely. Preparing them for refactoring and to the addition of their AVX forms 
llvm-svn: 106437
 2010-06-21 18:36:04 +00:00