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40 Commits

Author SHA1 Message Date
David Blaikie 46a9f016c5 More dead code removal (using -Wunreachable-code) 
llvm-svn: 148578
 2012-01-20 21:51:11 +00:00
Eli Friedman 5494adac67 Misc analysis passes that need to be aware of atomic load/store. 
llvm-svn: 137650
 2011-08-15 20:54:19 +00:00
Chris Lattner bf0aa927cc split dom frontier handling stuff out to its own DominanceFrontier header, 
so that Dominators.h is *just* domtree.  Also prune #includes a bit.

llvm-svn: 122714
 2011-01-02 22:09:33 +00:00
Dan Gohman a4fcd2418d Move Value::getUnderlyingObject to be a standalone 
function so that it can live in Analysis instead of
VMCore.

llvm-svn: 121885
 2010-12-15 20:02:24 +00:00
Dan Gohman 704e7c2332 Minimally update this code to handle PartialAlias. 
llvm-svn: 121518
 2010-12-10 20:14:49 +00:00
Dan Gohman afd6db9932 Move SCEV::isLoopInvariant and hasComputableLoopEvolution to be member 
functions of ScalarEvolution, in preparation for memoization and
other optimizations.

llvm-svn: 119562
 2010-11-17 21:23:15 +00:00
Owen Anderson 8ac477ffb5 Begin adding static dependence information to passes, which will allow us to 
perform initialization without static constructors AND without explicit initialization
by the client.  For the moment, passes are required to initialize both their
(potential) dependencies and any passes they preserve.  I hope to be able to relax
the latter requirement in the future.

llvm-svn: 116334
 2010-10-12 19:48:12 +00:00
Owen Anderson df7a4f2515 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Owen Anderson a57b97e7e7 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Dan Gohman 01c65a2622 Define placement new wrappers for BumpPtrAllocator and 
RecyclingAllocator to allow client code to be simpler, and
simplify several clients.

llvm-svn: 98847
 2010-03-18 18:49:47 +00:00
David Greene 9507879bca Convert debug messages to use dbgs(). Generally this means 
s/errs/dbgs/g except for certain special cases.

llvm-svn: 92042
 2009-12-23 20:52:41 +00:00
Chris Lattner 13d62b60bd remove a few dead insertion methods. 
llvm-svn: 79882
 2009-08-24 02:39:26 +00:00
Owen Anderson 55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Andreas Bolka 2f7562c83e SIV/MIV classification for LDA. 
LoopDependenceAnalysis::getLoops is currently O(N*M) for a loop-nest of
depth N and a compound SCEV of M atomic SCEVs. As both N and M will
typically be very small, this should not be a problem. If it turns out
to be one, rewriting getLoops as SCEVVisitor will reduce complexity to
O(M).

llvm-svn: 78394
 2009-08-07 18:23:41 +00:00
Andreas Bolka 3c7b95d9aa Simplify the ZIV tester to the max. 
As suggested by Nick Lewycky.

llvm-svn: 78277
 2009-08-06 03:10:33 +00:00
Andreas Bolka 13b860992a ZIV tester for LDA. 
llvm-svn: 78157
 2009-08-05 04:26:05 +00:00
Andreas Bolka d3a44b52c6 Restrict LDA to GEPs with the same pointer offset. 
We can not simply apply ZIV testing to the pointer offsets, as this
would incorrectly return independence for e.g. (GEP x,0,i; GEP x,1,-i).

llvm-svn: 78155
 2009-08-05 04:13:41 +00:00
Andreas Bolka c833d017c7 Restrict LDA to affine subscripts. 
llvm-svn: 77932
 2009-08-03 01:03:48 +00:00
Andreas Bolka 31d9fa2ad1 Equal SCEVs of a subscript give rise to dependence. 
llvm-svn: 77570
 2009-07-30 02:26:01 +00:00
Andreas Bolka 43797d15fa Skeleton for pairwise subscript testing. 
llvm-svn: 77437
 2009-07-29 05:35:53 +00:00
Andreas Bolka f1bd1edc11 Simplify LDA-internal interface. 
llvm-svn: 77359
 2009-07-28 19:50:13 +00:00
Andreas Bolka 44623bb9b2 Add LDA statistics. 
llvm-svn: 77358
 2009-07-28 19:49:49 +00:00
Andreas Bolka 0e263ce8af Minor factoring, naming and formatting cleanups. 
llvm-svn: 77357
 2009-07-28 19:49:25 +00:00
Andreas Bolka 8377af0296 Convert DOUT to DEBUG. 
llvm-svn: 77065
 2009-07-25 12:19:58 +00:00
Dan Gohman 43d19d61d4 Make AliasAnalysis and related classes use 
getAnalysisIfAvailable<TargetData>().

llvm-svn: 77028
 2009-07-25 00:48:42 +00:00
Andreas Bolka c76c723e25 Forward-declare raw_ostream. 
llvm-svn: 77014
 2009-07-24 23:19:28 +00:00
Andreas Bolka c8cd3f6959 Cache dependence computation using FoldingSet. 
This introduces an LDA-internal DependencePair class. The intention is,
that this is a place where dependence testers can store various results
such as SCEVs describing conflicting iterations, breaking conditions,
distance/direction vectors, etc.

llvm-svn: 76877
 2009-07-23 14:32:46 +00:00
Andreas Bolka 897e68c660 Minor cosmetics: indentation, formatting, naming. 
llvm-svn: 76839
 2009-07-23 01:57:06 +00:00
Torok Edwin fbcc663cbf llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Torok Edwin 56d0659726 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Andreas Bolka 1cd3fd6336 Minor improvement to the LDA debug output. 
llvm-svn: 74754
 2009-07-03 01:42:52 +00:00
Andreas Bolka 394b4156cf Use AA to check objects before LDA. 
llvm-svn: 74647
 2009-07-01 21:45:23 +00:00
Andreas Bolka 9541801105 Array accesses are independent if the underlying arrays differ. 
llvm-svn: 74499
 2009-06-30 02:12:10 +00:00
Andreas Bolka 6037bc9e60 Relax LDA memory instruction checks. 
llvm-svn: 74439
 2009-06-29 18:51:11 +00:00
Andreas Bolka 3a09c8bd5e Missed one. 
llvm-svn: 74416
 2009-06-29 00:53:49 +00:00
Andreas Bolka c5558a83f4 Fix case in LDA util function names. 
llvm-svn: 74415
 2009-06-29 00:50:26 +00:00
Andreas Bolka 9d09e20142 Print pairwise dependence results, add testcases. 
llvm-svn: 74402
 2009-06-28 00:35:22 +00:00
Andreas Bolka 9fee7f86ad Minimal LDA interface, maximally conservative tester. 
llvm-svn: 74401
 2009-06-28 00:21:21 +00:00
Andreas Bolka 8976d3bc7e LDA analysis output scaffolding. 
llvm-svn: 74400
 2009-06-28 00:16:08 +00:00
Andreas Bolka 8c7e299270 Scaffolding for LDA pass. 
llvm-svn: 74120
 2009-06-24 21:29:13 +00:00