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1653 Commits

Author SHA1 Message Date
Benjamin Kramer
a81f2ba27e Make CreateComplexVariable independent of SmallVector. 
llvm-svn: 114439
 2010-09-21 16:00:03 +00:00
Dan Gohman
836ce09592 Add a pass which prints out all the memdep dependencies. 
llvm-svn: 114121
 2010-09-16 22:08:32 +00:00
Owen Anderson
3d4644bad9 Revert r114097, adding back in the assertion against replacing an Instruction by itself. Now that CorrelatedValuePropagation is 
more careful not to call SimplifyInstructionsInBlock() on an unreachable block, the issue has been fixed at a higher level.  Add
a big warning to SimplifyInstructionsInBlock() to hopefully prevent this in the future.

llvm-svn: 114117
 2010-09-16 20:51:41 +00:00
Dan Gohman
ebbc4df924 Remove the experimental AliasAnalysis::getDependency interface, which 
isn't a good level of abstraction for memdep. Instead, generalize
AliasAnalysis::alias and related interfaces with a new Location
class for describing a memory location. For now, this is the same
Pointer and Size as before, plus an additional field for a TBAA tag.

Also, introduce a fixed MD_tbaa metadata tag kind.

llvm-svn: 113858
 2010-09-14 21:25:10 +00:00
Gabor Greif
dfe6dea95f typoes 
llvm-svn: 113647
 2010-09-10 22:25:58 +00:00
Owen Anderson
f7276d42d3 What the loop unroller cares about, rather than just not unrolling loops with calls, is 
not unrolling loops that contain calls that would be better off getting inlined.  This mostly
comes up when an interleaved devirtualization pass has devirtualized a call which the inliner
will inline on a future pass.  Thus, rather than blocking all loops containing calls, add
a metric for "inline candidate calls" and block loops containing those instead.

llvm-svn: 113535
 2010-09-09 20:32:23 +00:00
Dan Gohman
7fbaed00bf Extend the getDependence query with support for PHI translation. 
llvm-svn: 113521
 2010-09-09 18:37:31 +00:00
Dan Gohman
e1fb5b5738 Fix this comment. 
llvm-svn: 113511
 2010-09-09 18:04:22 +00:00
Owen Anderson
9a194c80c4 Refactor code-size reduction estimation methods out of InlineCostAnalyzer and into CodeMetrics. They 
don't use any InlineCostAnalyzer state, and are useful for other clients who don't necessarily want to use
all of InlineCostAnalyzer's logic, some of which is fairly inlining-specific.

No intended functionality change.

llvm-svn: 113499
 2010-09-09 16:56:42 +00:00
Dan Gohman
de56ae353b Add a new experimental generalized dependence query interface to 
AliasAnalysis, and some code for implementing the new query on top of
existing implementations by making standard alias and getModRefInfo
queries.

llvm-svn: 113329
 2010-09-08 01:32:20 +00:00
Dan Gohman
6d4356d31f Tidy up the getModRefInfo declarations. 
llvm-svn: 113275
 2010-09-07 20:37:47 +00:00
Chris Lattner
818045f208 pull a simple method out of LICM into a new 
Loop::hasLoopInvariantOperands method. Remove
a useless and confusing Loop::isLoopInvariant(Instruction)
method, which didn't do what you thought it did.

No functionality change.

llvm-svn: 113133
 2010-09-06 01:05:37 +00:00
Dan Gohman
ad593f9d93 Revert 112442 and 112440 until the compile time problems introduced 
by 112440 are resolved.

llvm-svn: 112692
 2010-09-01 01:45:53 +00:00
Dan Gohman
d261381db5 Update the descriptions of NoModRef and ModRef to be consistent 
with the descriptions of Mod and Ref.

llvm-svn: 112557
 2010-08-30 23:47:24 +00:00
Chris Lattner
9e35d96cea two changes: 1) make AliasSet hold the list of call sites with an 
assertingvh so we get a violent explosion if the pointer dangles.

2) Fix AliasSetTracker::deleteValue to remove call sites with
   by-pointer comparisons instead of by-alias queries.  Using
   findAliasSetForCallSite can cause alias sets to get merged
   when they shouldn't, and can also miss alias sets when the
   call is readonly.

#2 fixes PR6889, which only repros with a .c file :(

llvm-svn: 112452
 2010-08-29 18:42:23 +00:00
Dan Gohman
9ea315c5ca Make IVUsers iterative instead of recursive. 
This has the side effect of reversing the order of most of
IVUser's results.

llvm-svn: 112442
 2010-08-29 16:40:03 +00:00
Dan Gohman
636c57c5de Switch ScalarEvolution's main Value*->SCEV* map from std::map 
to DenseMap.

llvm-svn: 112281
 2010-08-27 18:55:03 +00:00
Eric Christopher
6263463ccb Fix header define to reflect the name of the file. 
Patch by Adam Treat!

llvm-svn: 112077
 2010-08-25 19:28:39 +00:00
Devang Patel
cf6c6b4038 Handle qualified constants that are directly folded by FE. 
PR 7920.

llvm-svn: 111820
 2010-08-23 18:25:56 +00:00
Dan Gohman
31ab7e6b8c CreateTemporaryType doesn't needs its Context argument. 
llvm-svn: 111687
 2010-08-20 22:39:47 +00:00
Dan Gohman
072e7bdcd4 Introduce a new temporary MDNode concept. Temporary MDNodes are 
not part of the IR, are not uniqued, and may be safely RAUW'd.
This replaces a variety of alternate mechanisms for achieving
the same effect.

llvm-svn: 111681
 2010-08-20 22:02:26 +00:00
Chris Lattner
bd80bd5d69 move gep decomposition out of ValueTracking into BasicAA. The form of 
decomposition that it is doing is very basicaa specific and is only used
by basicaa.

Now with less tree breakingness.

llvm-svn: 111433
 2010-08-18 22:07:29 +00:00
Daniel Dunbar
3d68ce9eeb Revert r111375, "move gep decomposition out of ValueTracking into BasicAA. The 
form of", it doesn't pass tests.

llvm-svn: 111385
 2010-08-18 18:43:08 +00:00
Owen Anderson
65795241db Inform LazyValueInfo whenever a block is deleted, to avoid dangling pointer issues. 
llvm-svn: 111382
 2010-08-18 18:39:01 +00:00
Chris Lattner
2d584f0b0e move gep decomposition out of ValueTracking into BasicAA. The form of 
decomposition that it is doing is very basicaa specific and is only used
by basicaa.

llvm-svn: 111375
 2010-08-18 18:22:17 +00:00
Dan Gohman
cc19893826 Revert r111031. The way LLVM defines loop invariance, the property of an 
expression being loop invariant is not equivalent to the property of
properly dominating the loop header.

Other optimizations have also made this optimization less important.

llvm-svn: 111160
 2010-08-16 17:34:25 +00:00
Dan Gohman
928cf9d77b Placate overzealous compiler warnings. 
llvm-svn: 111152
 2010-08-16 17:01:55 +00:00
Dan Gohman
6d808db278 Move SCEVNAryExpr's virtual member functions out of line, and convert 
them to iterators.

llvm-svn: 111140
 2010-08-16 16:21:27 +00:00
Dan Gohman
3921a903bb Specialize FoldingSetTrait<SCEV>, providing implementations of node 
comparison and hash computation which don't require constructing
temporary ID values.

llvm-svn: 111131
 2010-08-16 15:31:45 +00:00
Dan Gohman
c58d128eb8 Implement hasComputableLoopEvolution for Add, Mul, and Trunc operators, 
since they can support trivial implementations. This avoids potentially
expensive traversals of the operands.

llvm-svn: 111031
 2010-08-13 20:03:15 +00:00
Dan Gohman
2d7bf8c073 Make LoopPass::getContainedPass return a LoopPass* instead of a Pass* 
and remove casts from all its callers.

llvm-svn: 110848
 2010-08-11 20:34:43 +00:00
Dan Gohman
7e49302e9a Rename and reorder the arguments to isImpliedCond, for consistency and clarity. 
llvm-svn: 110750
 2010-08-10 23:46:30 +00:00
Devang Patel
17606414a4 Add missing argument. CreateCompositeTypeEx() users, please verify. 
llvm-svn: 110717
 2010-08-10 20:22:49 +00:00
Devang Patel
8d0c79694e Refactor. 
llvm-svn: 110607
 2010-08-09 21:39:24 +00:00
Dan Gohman
0c6a626902 Remove assignPassManager's default arguments. It's really 
confusing to have different arguments for the same virtual
function at different levels of the class hierarchy.

llvm-svn: 110500
 2010-08-07 01:25:32 +00:00
Dan Gohman
a581d6d202 Tidy up PMStack. Add a bunch of consts, use std::vector instead of 
std::deque, since this is a stack and only supports push/pop on
one end, and remove an unimplemented declaration.

llvm-svn: 110495
 2010-08-07 00:53:01 +00:00
Owen Anderson
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Dan Gohman
da3f592fb3 Implement a proper getModRefInfo for va_arg. 
llvm-svn: 110458
 2010-08-06 18:24:38 +00:00
Dan Gohman
66b637e4da Add a comment. 
llvm-svn: 110426
 2010-08-06 02:04:07 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Dan Gohman
ecf79cf569 Make AA private, since subclasses shouldn't (aren't don't) access it directly. 
llvm-svn: 110398
 2010-08-05 23:44:45 +00:00
Owen Anderson
b9762c07cb Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Dan Gohman
9ded12adcb Delete obsolete comments. 
llvm-svn: 110277
 2010-08-04 23:08:15 +00:00
Torok Edwin
967fc5164f Add a missing function. 
llvm-svn: 110195
 2010-08-04 11:42:45 +00:00
Dan Gohman
aac19e4ffe Remove PointerAccessInfo, which nothing was using. 
llvm-svn: 110167
 2010-08-03 23:08:10 +00:00
Dan Gohman
a087b90950 Thread const correctness through a bunch of AliasAnalysis interfaces and 
eliminate several const_casts.

Make CallSite implicitly convertible to ImmutableCallSite.

Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.

llvm-svn: 110155
 2010-08-03 21:48:53 +00:00
Dan Gohman
aabb615d52 Update some comments. 
llvm-svn: 110092
 2010-08-03 01:07:32 +00:00
Dan Gohman
6604a72154 Introduce a symbolic constant for ~0u for use with AliasAnalysis. 
llvm-svn: 110091
 2010-08-03 01:03:11 +00:00
Dan Gohman
e0489ffe8e Add a convenient form of AliasAnalysis::alias for the case where the sizes 
are unknown.

llvm-svn: 110090
 2010-08-03 00:56:30 +00:00
Dan Gohman
68ac0492a4 Make SCEVUnknown a CallbackVH, so that it can be notified directly 
of Value deletions and RAUWs, instead of relying on ScalarEvolution's
Scalars map being notified, as that's complicated at best, and
insufficient in general.

This means SCEVUnknown needs a non-trivial destructor, so introduce
a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns.

llvm-svn: 110086
 2010-08-02 23:49:30 +00:00
Dan Gohman
9d80b87a4d Sketch up a preliminary Type-Based Alias Analysis implementation. 
llvm-svn: 110077
 2010-08-02 23:11:01 +00:00
Devang Patel
f18faa5945 Add explicit constructors. Patch by Renato Golin. 
llvm-svn: 110072
 2010-08-02 22:51:46 +00:00
Nick Lewycky
460d1a457b LibCallAliasAnalysis uses multiple inheritance, so it needs to implement 
getAdjustedAnalysisPointer. Part of a fix to PR7760.

llvm-svn: 109883
 2010-07-30 20:19:09 +00:00
Eric Christopher
6a1da7b4a5 Speculatively revert r109705 since it seems to be causing some build bot 
angst.

llvm-svn: 109718
 2010-07-29 01:25:38 +00:00
Dan Gohman
ea1486b53c Factor out some of the code for updating old SCEVUnknown values, and 
extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.

llvm-svn: 109705
 2010-07-29 00:17:55 +00:00
Dan Gohman
b4699b3002 Add some extra friend declarations to fix a gcc-4.0 compile error. 
This is a temporary fix, until more elaborate changes are ready.

llvm-svn: 109593
 2010-07-28 17:09:24 +00:00
Dan Gohman
2dcafa2402 Add a comment. 
llvm-svn: 109565
 2010-07-28 00:21:18 +00:00
Tobias Grosser
ebc6c0cf50 RegionInfo: Add getMaxRegionExit() 
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.

llvm-svn: 109496
 2010-07-27 08:39:43 +00:00
Tobias Grosser
16789d79fe Add function to query RegionInfo about loops. 
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.

llvm-svn: 109490
 2010-07-27 04:17:13 +00:00
Dan Gohman
66b6f7d702 Use AssertingVH for InsertedValues and InsertedPostIncValues, to verify 
that the values they refer to aren't being deleted underneath them.

Make sure these containters get cleared by clear(), which IndVarSimplify
and LSR both use before deleting instructions.

llvm-svn: 109478
 2010-07-27 01:19:06 +00:00
Owen Anderson
12ab6162bf Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
llvm-svn: 109424
 2010-07-26 18:48:03 +00:00
Dan Gohman
e6e38c1685 Eliminate getCanonicalInductionVariableIncrement's last user and 
eliminate it.

llvm-svn: 109270
 2010-07-23 21:34:51 +00:00
Tobias Grosser
604a50cd71 Add new RegionInfo pass. 
The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".

llvm-svn: 109089
 2010-07-22 07:46:31 +00:00
Dan Gohman
fc3ee085a0 Disallow null as a named metadata operand. 
Make MDNode::destroy private.
Fix the one thing that used MDNode::destroy, outside of MDNode itself.

One should never delete or destroy an MDNode explicitly. MDNodes
implicitly go away when there are no references to them (implementation
details aside).

llvm-svn: 109028
 2010-07-21 18:54:18 +00:00
Jakob Stoklund Olesen
dcf78c06f8 Implement loop splitting analysis. 
Determine which loop exit blocks need a 'pre-exit' block inserted.
Recognize when this would be impossible.

llvm-svn: 108941
 2010-07-20 21:46:58 +00:00
Dan Gohman
0bfc6146bf Make getOrInsertCanonicalInductionVariable guarantee that its 
result is a PHINode*.

llvm-svn: 108852
 2010-07-20 16:44:52 +00:00
Stuart Hastings
587ed4918c Correct line info for declarations/definitions. Radar 8063111. 
llvm-svn: 108784
 2010-07-19 23:56:30 +00:00
Lang Hames
ac3a879f12 Switched to array_pod_sort as per Chris's suggestion. 
llvm-svn: 108616
 2010-07-17 09:21:53 +00:00
Lang Hames
48638f63ba LoopSplitter - intended to split live intervals over loop boundaries. 
Still very much under development. Comments and fixes will be forthcoming.

(This commit includes some small tweaks to LiveIntervals & LoopInfo to support the splitter)

llvm-svn: 108615
 2010-07-17 07:34:01 +00:00
Tobias Grosser
97dc00d1d8 Add dump() to DominanceFrontier 
llvm-svn: 108512
 2010-07-16 05:59:39 +00:00
Eric Christopher
bc774d339c 80-columns 
llvm-svn: 108228
 2010-07-13 05:50:08 +00:00
Eric Christopher
ff925e91b9 Remove tab characters and 80-col. 
llvm-svn: 108127
 2010-07-12 05:26:37 +00:00
Gabor Greif
4d880ebd36 fix clang selfhost issue (shadowing) 
llvm-svn: 107970
 2010-07-09 14:46:49 +00:00
Gabor Greif
0da64e7003 refactor type expressions and cache operator*'s result 
llvm-svn: 107964
 2010-07-09 14:00:56 +00:00
Gabor Greif
17ddf2d1fa two more cases of reuse result of operator*, found by inspection 
llvm-svn: 107961
 2010-07-09 10:42:13 +00:00
Gabor Greif
01db29c828 another case of reuse result of operator*, it is expensive to recompute 
llvm-svn: 107960
 2010-07-09 10:32:31 +00:00
Gabor Greif
d266b0fcd8 reuse result of operator*, it is expensive to recompute 
llvm-svn: 107959
 2010-07-09 09:50:51 +00:00
Stuart Hastings
a3999081cf Reverting r107918 and r107919. Radar 8063111. 
llvm-svn: 107930
 2010-07-08 23:25:39 +00:00
Stuart Hastings
b70d4e06e3 Fix decl/def debug info for template functions. Radar 8063111. 
llvm-svn: 107919
 2010-07-08 22:28:59 +00:00
Gabor Greif
3e4b85cd99 only dereference iterator once in the loop 
(by caching the result we save a potentially expensive dereference)

also use typedefs to shorten type declarations

llvm-svn: 107883
 2010-07-08 16:56:18 +00:00
Duncan Sands
5338c9f877 Use std::vector rather than SmallVector here because SmallVector 
causes some versions of gcc to crash when building LLVM.

llvm-svn: 107869
 2010-07-08 13:06:08 +00:00
Duncan Sands
dcc1398f44 Do not use std::stack because it causes obscure failures when 
compiled with MSVC 2010 (PR7367).  Instead use a SmallVector.

llvm-svn: 107867
 2010-07-08 11:54:27 +00:00
Dan Gohman
2a08e2ce81 Remove interprocedural-basic-aa and associated code. The AliasAnalysis 
interface needs implementations to be consistent, so any code which
wants to support different semantics must use a different interface.
It's not currently worthwhile to add a new interface for this new
concept.

Document that AliasAnalysis doesn't support cross-function queries.

llvm-svn: 107776
 2010-07-07 14:27:09 +00:00
Dan Gohman
de933eddb5 Document that BasicAA respects noalias, while InterproceduralBasicAA 
does not.

llvm-svn: 107546
 2010-07-02 23:52:36 +00:00
Dan Gohman
6a179b2376 Remove an unused enum. 
llvm-svn: 107507
 2010-07-02 20:20:50 +00:00
Dan Gohman
37bf33ccff Add an Intraprocedural form of BasicAliasAnalysis, which aims to 
properly handles instructions and arguments defined in different
functions, or across recursive function iterations.

llvm-svn: 107109
 2010-06-29 00:50:39 +00:00
Dan Gohman
d454f5c234 Generalize AAEval so that it can be used both per-function and 
interprocedurally. Note that as of this writing, existing alias
analysis passes are not prepared to be used interprocedurally.

llvm-svn: 107013
 2010-06-28 16:01:37 +00:00
Gabor Greif
4615fc1c93 minor enhancement to llvm::isFreeCall API: return CallInst; no functional change 
llvm-svn: 106686
 2010-06-23 21:51:12 +00:00
Dan Gohman
f44783ab4e Replace ScalarEvolution's private copy of getLoopPredecessor 
with LoopInfo's public copy.

llvm-svn: 106603
 2010-06-22 23:43:28 +00:00
Dan Gohman
29b845f3b7 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
fb091c213b Factor out duplicated code for reusing and inserting casts into 
a helper function.

llvm-svn: 106388
 2010-06-19 13:25:23 +00:00
Dan Gohman
b5ec637e57 Revert r106304 (105548 and friends), which are the SCEVComplexityCompare 
optimizations. There is still some nondeterminism remaining.

llvm-svn: 106306
 2010-06-18 19:54:20 +00:00
Dan Gohman
527b570925 Reapply 105540, 105542, and 105548, and revert r105732. 
llvm-svn: 106304
 2010-06-18 19:26:04 +00:00
Dan Gohman
0422fad3a6 Don't bother calling releaseMemory before destroying the DominatorTreeBase. 
llvm-svn: 106287
 2010-06-18 16:09:11 +00:00
Dan Gohman
e20e668c7e Remove getIntegerSCEV; it's redundant with getConstant, and getConstant 
is more consistent with the ConstantInt API.

llvm-svn: 106281
 2010-06-18 14:33:50 +00:00
Douglas Gregor
48c6838611 Revert r106117, which was the result of me misreading the C++98/03 
specification.

llvm-svn: 106162
 2010-06-16 22:32:18 +00:00
Douglas Gregor
5ca7ded45a Eliminate a redundant "typename" keyword 
llvm-svn: 106117
 2010-06-16 17:42:01 +00:00
Stuart Hastings
f9ef9ff3d6 Support for nested functions/classes in debug output. (Again.) Radar 7424645. 
llvm-svn: 105828
 2010-06-11 20:08:44 +00:00
Evan Cheng
28c151ae52 Revert 105540, 105542, 105544, 105546, and 105548 to unbreak bootstrapping. 
llvm-svn: 105740
 2010-06-09 18:59:43 +00:00
Kenneth Uildriks
2c6b68924d Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it can be reused from PartialSpecializationCost 
llvm-svn: 105725
 2010-06-09 15:11:37 +00:00