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47 Commits

Author SHA1 Message Date
Chris Lattner
e1fe7061ce land David Blaikie's patch to de-constify Type, with a few tweaks. 
llvm-svn: 135375
 2011-07-18 04:54:35 +00:00
Jay Foad
88fb4f4597 Convert InsertValueInst and ExtractValueInst APIs to use ArrayRef. 
llvm-svn: 135040
 2011-07-13 10:26:04 +00:00
Jay Foad
c29ba4ecd6 PR9214: Convert ConstantExpr::getIndices() to return an ArrayRef, plus 
related tweaks to ExprMapKeyType.

llvm-svn: 129443
 2011-04-13 15:22:40 +00:00
Dan Gohman
db0dc19c04 Give GetUnderlyingObject a TargetData, to keep it in sync 
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
Dan Gohman
295ba3ab26 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
1baada041e Update a comment. 
llvm-svn: 121727
 2010-12-13 22:53:18 +00:00
Dan Gohman
98f5b2ae22 Use PartialAlias to do better noalias lint checking. 
llvm-svn: 121514
 2010-12-10 20:04:06 +00:00
Duncan Sands
a5bd3ff0e4 Now that hasConstantValue has been made simpler, it may return the 
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
Duncan Sands
d3c1ca1f00 Previously SimplifyInstruction could report that an instruction 
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
Duncan Sands
48517dac03 Fix a layering violation: hasConstantValue, which is part of the PHINode 
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
Dan Gohman
b68f197748 Avoid calling alias on non-pointer values. 
llvm-svn: 118822
 2010-11-11 19:23:51 +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
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
Owen Anderson
69cbf2e8b7 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Chris Lattner
8df3ffd7ac zap dead code. 
llvm-svn: 113073
 2010-09-04 18:12:00 +00:00
Dan Gohman
8ed4d1646e Revert r111058, the lint check for indirectbr successors that aren't 
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
Dan Gohman
422c164d8d Add a lint check for an indirectbr destination which has not 
had its address taken.

llvm-svn: 111058
 2010-08-13 23:56:28 +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
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +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
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
abb2503036 Add a lint check for indirectbr with no successors. 
llvm-svn: 110074
 2010-08-02 23:06:43 +00:00
Owen Anderson
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Dan Gohman
0af129aa1b Add a lint check for mismatched return types, inspired by PR6944. 
llvm-svn: 108162
 2010-07-12 18:02:04 +00:00
Dan Gohman
0cea029f14 Add some more TODO comments. 
llvm-svn: 107657
 2010-07-06 15:23:00 +00:00
Dan Gohman
fa0252225f Add a comment. 
llvm-svn: 107656
 2010-07-06 15:21:57 +00:00
Dan Gohman
56a2a0fb80 Fix the noalias checking so that it doesn't worry about 
an argument aliasing itself. Thanks Duncan!

llvm-svn: 105288
 2010-06-01 20:51:40 +00:00
Dan Gohman
fe69bf7b4c Add lint checks for function attributes. 
llvm-svn: 105009
 2010-05-28 21:43:57 +00:00
Dan Gohman
a20b0d02e6 Fix lint's memcpy and memmove checks, and its basic block traversal. 
llvm-svn: 104970
 2010-05-28 17:44:00 +00:00
Dan Gohman
9a50a9215c Detect self-referential values. 
llvm-svn: 104957
 2010-05-28 16:45:33 +00:00
Dan Gohman
8570c1a249 Eli pointed out that va_arg instruction result values don't 
reference the stack.

llvm-svn: 104951
 2010-05-28 16:34:49 +00:00
Dan Gohman
7981165281 Teach lint how to look through simple store+load pairs and other 
effective no-op constructs, to make it more effective on
unoptimized IR.

llvm-svn: 104950
 2010-05-28 16:21:24 +00:00
Dan Gohman
a6c568fa77 Add a lint check for returning the address of stack memory. 
llvm-svn: 104936
 2010-05-28 04:33:42 +00:00
Dan Gohman
0b5922b032 Fix Lint printing warnings multiple times. Remove the ErrorStr 
option from lintModule, which was an artifact from being
based on Verifier code.

llvm-svn: 104765
 2010-05-26 22:28:53 +00:00
Dan Gohman
2c70e05105 Reinstate checking of stackrestore, with checking for both Read 
and Write, and add a comment explaining this.

llvm-svn: 104756
 2010-05-26 22:21:25 +00:00
Dan Gohman
5ec2a338ac Stackrestore is not a load. 
llvm-svn: 104752
 2010-05-26 22:00:10 +00:00
Dan Gohman
35b59125b0 Remove a TODO which isn't practical. 
llvm-svn: 104748
 2010-05-26 21:50:41 +00:00
Dan Gohman
6b78ee79c1 Implement checking of the tail keyword. 
llvm-svn: 104744
 2010-05-26 21:46:36 +00:00
Dan Gohman
6944fae2f6 Add lint checks for invalid uses of memory. 
llvm-svn: 102733
 2010-04-30 19:05:00 +00:00
Dan Gohman
1af81d31e9 Tidy a comment. 
llvm-svn: 102041
 2010-04-22 01:30:05 +00:00
Dan Gohman
b07151b5dd Add several more lint checks. 
llvm-svn: 100841
 2010-04-09 01:39:53 +00:00
Dan Gohman
eeb89ac6d3 Add a few more lint checks. 
llvm-svn: 100825
 2010-04-08 23:05:57 +00:00
Dan Gohman
6ad805d335 Add a -lint pass which checks for common sources of undefined or likely 
unintended behavior.

llvm-svn: 100798
 2010-04-08 18:47:09 +00:00