ba0a6cabb8
Always compute all the bits in ComputeMaskedBits.
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This allows us to keep passing reduced masks to SimplifyDemandedBits, but
know about all the bits if SimplifyDemandedBits fails. This allows instcombine
to simplify cases like the one in the included testcase.
llvm-svn: 154011
2012-04-04 12:51:34 +00:00
43a33066b4
Fix a few more places where TargetData/TargetLibraryInfo is not being passed.
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Add FIXMEs to places that are non-trivial to fix.
llvm-svn: 145661
2011-12-02 01:26:24 +00:00
c24b86ffbe
Propagate TargetLibraryInfo throughout ConstantFolding.cpp and
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InstructionSimplify.cpp. Other fixups as needed.
Part of rdar://10500969
llvm-svn: 145559
2011-12-01 03:08:23 +00:00
229907cd11
land David Blaikie's patch to de-constify Type, with a few tweaks.
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llvm-svn: 135375
2011-07-18 04:54:35 +00:00
57aa636794
Convert InsertValueInst and ExtractValueInst APIs to use ArrayRef.
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llvm-svn: 135040
2011-07-13 10:26:04 +00:00
0091fe8ca1
PR9214: Convert ConstantExpr::getIndices() to return an ArrayRef, plus
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related tweaks to ExprMapKeyType.
llvm-svn: 129443
2011-04-13 15:22:40 +00:00
0f124e1987
Give GetUnderlyingObject a TargetData, to keep it in sync
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with BasicAA's DecomposeGEPExpression, which recently began
using a TargetData. This fixes PR8968, though the testcase
is awkward to reduce.
Also, update several off GetUnderlyingObject's users
which happen to have a TargetData handy to pass it in.
llvm-svn: 124134
2011-01-24 18:53:32 +00:00
a4fcd2418d
Move Value::getUnderlyingObject to be a standalone
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function so that it can live in Analysis instead of
VMCore.
llvm-svn: 121885
2010-12-15 20:02:24 +00:00
3cb55a1d23
Update a comment.
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llvm-svn: 121727
2010-12-13 22:53:18 +00:00
201acdb6db
Use PartialAlias to do better noalias lint checking.
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llvm-svn: 121514
2010-12-10 20:04:06 +00:00
ec7a6ecb92
Now that hasConstantValue has been made simpler, it may return the
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phi node itself if it occurs in an unreachable basic block. Protect
against this. Hopefully this will fix some more buildbots.
llvm-svn: 119493
2010-11-17 10:23:23 +00:00
64e41cf865
Previously SimplifyInstruction could report that an instruction
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simplified to itself (this can only happen in unreachable blocks).
Change it to return null instead. Hopefully this will fix some
buildbot failures.
llvm-svn: 119490
2010-11-17 08:35:29 +00:00
7412f6e53d
Fix a layering violation: hasConstantValue, which is part of the PHINode
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class, uses DominatorTree which is an analysis. This change moves all of
the tricky hasConstantValue logic to SimplifyInstruction, and replaces it
with a very simple literal implementation. I already taught users of
hasConstantValue that need tricky stuff to use SimplifyInstruction instead.
I didn't update InlineFunction because the IR looks like it might be in a
funky state at the point it calls hasConstantValue, which makes calling
SimplifyInstruction dangerous since it can in theory do a lot of tricky
reasoning. This may be a pessimization, for example in the case where
all phi node operands are either undef or a fixed constant.
llvm-svn: 119459
2010-11-17 04:30:22 +00:00
7dacf8f3f3
Avoid calling alias on non-pointer values.
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llvm-svn: 118822
2010-11-11 19:23:51 +00:00
f372cf869b
Reapply r116831 and r116839, converting AliasAnalysis to use
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uint64_t, plus fixes for places I missed before.
llvm-svn: 116875
2010-10-19 22:54:46 +00:00
b4aa503501
Revert r116831 and r116839, which are breaking selfhost builds.
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llvm-svn: 116858
2010-10-19 21:06:16 +00:00
f4c5fe73be
Change AliasAnalysis and its clients to use uint64_t instead of unsigned
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for representing object sizes, for consistency with other parts of LLVM.
llvm-svn: 116831
2010-10-19 18:00:02 +00:00
6c18d1aac0
Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which
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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
14fe8cf238
Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u.
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llvm-svn: 116815
2010-10-19 17:06:23 +00:00
8ac477ffb5
Begin adding static dependence information to passes, which will allow us to
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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
df7a4f2515
Now with fewer extraneous semicolons!
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llvm-svn: 115996
2010-10-07 22:25:06 +00:00
65b48b5dfc
zap dead code.
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llvm-svn: 113073
2010-09-04 18:12:00 +00:00
fb83b043eb
Revert r111058, the lint check for indirectbr successors that aren't
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address-taken. This can occur normally, if the code which took the
address got DCEd.
llvm-svn: 111121
2010-08-16 14:39:19 +00:00
21e6dc6aa3
Add a lint check for an indirectbr destination which has not
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had its address taken.
llvm-svn: 111058
2010-08-13 23:56:28 +00:00
a7aed18624
Reapply r110396, with fixes to appease the Linux buildbot gods.
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llvm-svn: 110460
2010-08-06 18:33:48 +00:00
bda59bd247
Revert r110396 to fix buildbots.
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llvm-svn: 110410
2010-08-06 00:23:35 +00:00
755aceb5d0
Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static
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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
da7182e116
Add a convenient form of AliasAnalysis::alias for the case where the sizes
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are unknown.
llvm-svn: 110090
2010-08-03 00:56:30 +00:00
d8968da2c5
Add a lint check for indirectbr with no successors.
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llvm-svn: 110074
2010-08-02 23:06:43 +00:00
a57b97e7e7
Fix batch of converting RegisterPass<> to INTIALIZE_PASS().
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llvm-svn: 109045
2010-07-21 22:09:45 +00:00
c128e70ff2
Add a lint check for mismatched return types, inspired by PR6944.
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llvm-svn: 108162
2010-07-12 18:02:04 +00:00
1e33b18e28
Add some more TODO comments.
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llvm-svn: 107657
2010-07-06 15:23:00 +00:00
f855b39edd
Add a comment.
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llvm-svn: 107656
2010-07-06 15:21:57 +00:00
49a372cebc
Fix the noalias checking so that it doesn't worry about
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an argument aliasing itself. Thanks Duncan!
llvm-svn: 105288
2010-06-01 20:51:40 +00:00
0fa67e479a
Add lint checks for function attributes.
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llvm-svn: 105009
2010-05-28 21:43:57 +00:00
c575ec61ea
Fix lint's memcpy and memmove checks, and its basic block traversal.
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llvm-svn: 104970
2010-05-28 17:44:00 +00:00
862f034188
Detect self-referential values.
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llvm-svn: 104957
2010-05-28 16:45:33 +00:00
cef9fc37f4
Eli pointed out that va_arg instruction result values don't
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reference the stack.
llvm-svn: 104951
2010-05-28 16:34:49 +00:00
54d7aaa819
Teach lint how to look through simple store+load pairs and other
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effective no-op constructs, to make it more effective on
unoptimized IR.
llvm-svn: 104950
2010-05-28 16:21:24 +00:00
ddba4b725a
Add a lint check for returning the address of stack memory.
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llvm-svn: 104936
2010-05-28 04:33:42 +00:00
084bcb1322
Fix Lint printing warnings multiple times. Remove the ErrorStr
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option from lintModule, which was an artifact from being
based on Verifier code.
llvm-svn: 104765
2010-05-26 22:28:53 +00:00
a20a5cd24f
Reinstate checking of stackrestore, with checking for both Read
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and Write, and add a comment explaining this.
llvm-svn: 104756
2010-05-26 22:21:25 +00:00
996bc42a26
Stackrestore is not a load.
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llvm-svn: 104752
2010-05-26 22:00:10 +00:00
c96c6db59d
Remove a TODO which isn't practical.
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llvm-svn: 104748
2010-05-26 21:50:41 +00:00
1249adf160
Implement checking of the tail keyword.
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llvm-svn: 104744
2010-05-26 21:46:36 +00:00
299e7b93ac
Add lint checks for invalid uses of memory.
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llvm-svn: 102733
2010-04-30 19:05:00 +00:00
c951e6e414
Tidy a comment.
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llvm-svn: 102041
2010-04-22 01:30:05 +00:00
9ba08a4631
Add several more lint checks.
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llvm-svn: 100841
2010-04-09 01:39:53 +00:00
7808d490d3
Add a few more lint checks.
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llvm-svn: 100825
2010-04-08 23:05:57 +00:00
98bc4371c7
Add a -lint pass which checks for common sources of undefined or likely
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unintended behavior.
llvm-svn: 100798
2010-04-08 18:47:09 +00:00
Rafael Espindola