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96566 Commits

Author SHA1 Message Date
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
John McCall 4cec5f806b Fix another case of giving the wrong value kind to a dependent cast to 
a non-dependent type.

llvm-svn: 120384
 2010-11-30 02:05:44 +00:00
Chris Lattner 6c7f64e0bc remove a use of llvm-dis 
llvm-svn: 120383
 2010-11-30 02:04:15 +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
Nick Lewycky 5421621d2b Replace \r\n with \n. No functional change. 
llvm-svn: 120379
 2010-11-30 01:47:38 +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
Nick Lewycky c4f482b1b7 Add a default clause to avoid this GCC warning: 
Type.cpp:1000: warning: control reaches end of non-void function

llvm-svn: 120376
 2010-11-30 01:28:32 +00:00
Chris Lattner c2e3445273 merge one more away 
llvm-svn: 120375
 2010-11-30 01:06:43 +00:00
Chris Lattner 7578d0df51 I already merged partial-overwrite.ll -> PartialStore.ll 
Merge context-sensitive.ll -> simple.ll and upgrade it.

llvm-svn: 120374
 2010-11-30 01:05:07 +00:00
Chris Lattner 43e3a98675 clean up DSE tests, removing some poorly reduced and useless old test, 
merging more into other larger .ll files, filecheckizing along the way.

llvm-svn: 120373
 2010-11-30 01:00:34 +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
Sean Callanan 348b5897f9 Added a feature where registers can be referred to 
using special $-variables from expressions.

(lldb) expr $rip

These variables are available for reading and
writing.

llvm-svn: 120367
 2010-11-30 00:27:43 +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
Johnny Chen a994070040 Add comment for a branch of test logic which applies to ['clang', 'llvm-gcc'] only. 
llvm-svn: 120355
 2010-11-29 23:58:04 +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
Johnny Chen 11d2bae187 Minor comment fix. 
llvm-svn: 120352
 2010-11-29 23:47:40 +00:00
Argyrios Kyrtzidis 091d97c709 Revert r120331 since it causes spurious warnings and a possible assertion hit when self-host. 
llvm-svn: 120351
 2010-11-29 23:42:03 +00:00
Jim Grosbach cb803b043b Add a few missing initializers. 
llvm-svn: 120350
 2010-11-29 23:41:10 +00:00
Michael J. Spencer b775d0b3ad Support/PathV2: Fix 80 col. 
llvm-svn: 120349
 2010-11-29 23:35:49 +00:00
Michael J. Spencer b682b0cd14 Support/PathV2: Update comments. 
llvm-svn: 120348
 2010-11-29 23:35:35 +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
Fariborz Jahanian e1802eefac Incomplete enum types not to be treated as integer type 
when checking for integer signed/unsigned-ness. PR8694,
// rdar://8707031

llvm-svn: 120345
 2010-11-29 23:18:09 +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
Chris Lattner 2907f44a1b convert llvm-ar and llvm-ranlib to raw_ostream from iostreams. 
Patch by Danil Malyshev!

llvm-svn: 120341
 2010-11-29 23:02:20 +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
Benjamin Kramer a22f0ce1a3 Add missing colon. 
llvm-svn: 120336
 2010-11-29 22:39:38 +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