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3486 Commits

Author SHA1 Message Date
Dan Gohman
85557399a1 Make ScalarEvolution::forgetLoop forget all contained loops too, because 
they may have ValuesAtScopes map entries referencing their outer loops.
This fixes a user-after-free reported in PR8471.

llvm-svn: 117698
 2010-10-29 20:16:10 +00:00
Dan Gohman
753c9ce807 Teach memdep to use pointsToConstantMemory to determine that loads 
from constant memory don't alias any stores.

llvm-svn: 117636
 2010-10-29 01:14:04 +00:00
Dan Gohman
ef977ab6b6 Support TBAA attachments on calls. This is somewhat experimental. 
llvm-svn: 117317
 2010-10-25 21:38:20 +00:00
Dan Gohman
20a3dd4ee1 Fix chaining in TBAA's pointsToConstantMemory. 
llvm-svn: 117314
 2010-10-25 21:24:55 +00:00
Dan Gohman
cdc30324f1 Only read one bit for testing for a readonly type, leaving the other 
bits open for future uses.

llvm-svn: 117301
 2010-10-25 20:22:29 +00:00
Dan Gohman
3bce49a02a Add a comment. 
llvm-svn: 117288
 2010-10-25 19:47:25 +00:00
Dan Gohman
9d63075905 Update comments; BasicAA is no longer necessarily the end of the chain. 
llvm-svn: 117268
 2010-10-25 16:29:52 +00:00
Dan Gohman
67e229bec7 Reintroduce these asserts, now that BasicAA is a normal AliasAnalysis pass. 
llvm-svn: 117266
 2010-10-25 16:28:57 +00:00
Benjamin Kramer
9e988fe81e Make some symbols static, move classes into anonymous namespaces. 
llvm-svn: 117111
 2010-10-22 17:35:07 +00:00
Dan Gohman
fe5489a0ac Add some more documentation. 
llvm-svn: 117070
 2010-10-21 21:55:35 +00:00
Dan Gohman
6fb125afc8 Explain what "constant" means here. 
llvm-svn: 117053
 2010-10-21 19:45:09 +00:00
Dan Gohman
8cb659e892 Update comments. 
llvm-svn: 117048
 2010-10-21 19:01:22 +00:00
Dan Gohman
369ce9c96c Memdep says that an instruction clobbers itself 
when it means there is no specific clobber instruction.

llvm-svn: 116960
 2010-10-20 22:37:41 +00:00
Dan Gohman
3376c4f08d Factor out the main aliasing check into a separate function. 
llvm-svn: 116958
 2010-10-20 22:11:14 +00:00
Dan Gohman
599a664758 Fix comments; the type graph is currently a tree, not a DAG. 
llvm-svn: 116954
 2010-10-20 22:02:58 +00:00
Tobias Grosser
88ce93b0eb Add RegionPass support. 
A RegionPass is executed like a LoopPass but on the regions detected by the
RegionInfo pass instead of the loops detected by the LoopInfo pass.

llvm-svn: 116905
 2010-10-20 01:54:44 +00:00
Douglas Gregor
1e64599cb3 Fix CMake build 
llvm-svn: 116903
 2010-10-20 01:36:56 +00:00
Dan Gohman
399ef0b44a Move NoAA out of BasicAliasAnalysis.cpp into its own file, now that 
it doesn't have a special relationship with BasicAliasAnalysis
anymore.

llvm-svn: 116876
 2010-10-19 23:09:08 +00:00
Dan Gohman
befe1767ff Reapply r116831 and r116839, converting AliasAnalysis to use 
uint64_t, plus fixes for places I missed before.

llvm-svn: 116875
 2010-10-19 22:54:46 +00:00
Dan Gohman
de3c49438f Revert r116831 and r116839, which are breaking selfhost builds. 
llvm-svn: 116858
 2010-10-19 21:06:16 +00:00
Dan Gohman
03f86df2e5 Change AliasAnalysis and its clients to use uint64_t instead of unsigned 
for representing object sizes, for consistency with other parts of LLVM.

llvm-svn: 116831
 2010-10-19 18:00:02 +00:00
Owen Anderson
46990c17f7 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820
 2010-10-19 17:21:58 +00:00
Dan Gohman
6e3755905e Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u. 
llvm-svn: 116815
 2010-10-19 17:06:23 +00:00
Dan Gohman
8b332ffb8c Make the representation of AliasSets explicitly differentiate 
between "not known yet" and "known no tbaa info" so that it
can merge them properly.

llvm-svn: 116767
 2010-10-18 23:31:47 +00:00
Dan Gohman
6efd04961b Don't pass the raw invalid pointer used to represent conflicting 
TBAA information to AliasAnalysis.

llvm-svn: 116751
 2010-10-18 21:28:00 +00:00
Dan Gohman
64affb7be2 Make AliasSetTracker TBAA-aware, enabling TBAA-enabled LICM. 
llvm-svn: 116743
 2010-10-18 20:44:50 +00:00
Dan Gohman
35def103f7 Fix BasicAA to pass TBAAInfo through to the chained analysis. 
llvm-svn: 116730
 2010-10-18 18:45:11 +00:00
Dan Gohman
7820328076 Make TypeBasedAliasAnalysis default to doing nothing, with a command-line 
option to enable it.

llvm-svn: 116722
 2010-10-18 18:17:47 +00:00
Dan Gohman
97f3b0cac1 Use chaining in TypeBasedAliasAnalysis::pointsToConstantMemory. 
llvm-svn: 116721
 2010-10-18 18:10:31 +00:00
Dan Gohman
6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which 
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
 2010-10-18 18:04:47 +00:00
Benjamin Kramer
a0e156fe6d Eliminate some calls to Value::getNameStr. 
llvm-svn: 116670
 2010-10-16 11:28:23 +00:00
Dan Gohman
d93278f6b6 Tolerate a null parent pointer. 
llvm-svn: 116533
 2010-10-14 22:55:57 +00:00
Chris Lattner
451a0accb5 add uadd_ov/usub_ov to apint, consolidate constant folding 
logic to use the new APInt methods.  Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

which comes from "clang -ftrapv", originally brought to my attention from PR8221.

llvm-svn: 116457
 2010-10-14 00:05:07 +00:00
Owen Anderson
c65395a991 Analysis groups need to initialize their default implementations. 
llvm-svn: 116441
 2010-10-13 21:49:58 +00:00
Tobias Grosser
70507511ae Add Region::isTopLevelRegion(). 
llvm-svn: 116402
 2010-10-13 11:02:44 +00:00
Tobias Grosser
1eba2917fa RegionInfo: Fix trivial error that slipped in last minute. 
llvm-svn: 116400
 2010-10-13 08:00:53 +00:00
Tobias Grosser
85dce73ab5 RegionInfo: Update RegionInfo after a BB was split. 
llvm-svn: 116398
 2010-10-13 05:54:13 +00:00
Tobias Grosser
6aac855519 RegioInfo: Add getExpandedRegion(). 
getExpandedRegion() enables us to create non canonical regions. Those regions
can be used to define the largerst region, that fullfills a certain property.

llvm-svn: 116397
 2010-10-13 05:54:11 +00:00
Tobias Grosser
ecfaf92c1a RegionInfo: Allow to update exit and entry of a region. 
llvm-svn: 116396
 2010-10-13 05:54:10 +00:00
Tobias Grosser
84dd4b54fc RegionInfo: Enhance addSubregion. 
llvm-svn: 116395
 2010-10-13 05:54:09 +00:00
Tobias Grosser
a2b5df5a6d RegionInfo: Allow to set the parent region of a basic block. 
llvm-svn: 116394
 2010-10-13 05:54:07 +00:00
Tobias Grosser
e5d4a07ab3 RegionInfo: Free the RegionNodes in cache. 
Contributed by: ether

llvm-svn: 116380
 2010-10-13 00:07:59 +00:00
Owen Anderson
63f757463c 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
Dan Gohman
4231230501 Support AA chaining. 
llvm-svn: 116264
 2010-10-11 23:39:34 +00:00
Kenneth Uildriks
e9771f15f7 Now using a variant of the existing inlining heuristics to decide whether to create a given specialization of a function in PartialSpecialization. If the total performance bonus across all callsites passing the same constant exceeds the specialization cost, we create the specialization. 
llvm-svn: 116158
 2010-10-09 22:06:36 +00:00
Kenneth Uildriks
0545afa8fd Start separating out code metrics into code size metrics and code performance metrics. Partial Specialization will apply the former to function specializations, and the latter to all callsites that can use a specialization, in order to decide whether to create a specialization 
llvm-svn: 116057
 2010-10-08 13:57:31 +00:00
Owen Anderson
69cbf2e8b7 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Owen Anderson
0dd283aa50 Add an implementation of the initialization routine for IPA. 
llvm-svn: 115947
 2010-10-07 18:31:27 +00:00
Owen Anderson
704998fa6f Add initialization routines for Analysis and IPA. 
llvm-svn: 115946
 2010-10-07 18:31:00 +00:00
Owen Anderson
ab71dcd0ad Fix a warning when building with clang++. 
llvm-svn: 115924
 2010-10-07 17:04:18 +00:00