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3234 Commits

Author SHA1 Message Date
Dan Gohman
b8c86a010c Minore code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107777 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-07 14:30:04 +00:00
Dan Gohman
9e86f4364b 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107776 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-07 14:27:09 +00:00
Gabor Greif
274fefdd96 conditionalize by CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107767 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-07 10:34:03 +00:00
Dan Gohman
0ce249911b Add some more TODO comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107657 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-06 15:23:00 +00:00
Dan Gohman
d3b6e41ffb Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107656 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-06 15:21:57 +00:00
Dan Gohman
21de4c0daf Remove context sensitivity concerns from interprocedural-basic-aa, and 
make it more aggressive in cases where both pointers are known to live
in the same function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107420 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-01 20:08:40 +00:00
Dan Gohman
06028bcce4 In ScalarEvolution::forgetValue, eliminate any SCEVUnknown 
entries associated with the value being erased in the
folding set map.  These entries used to be harmless, because
a SCEVUnknown doesn't store any information about its Value*,
so having a new Value allocated at the old Value's address
wasn't a problem. But now that ScalarEvolution is storing more
information about values, this is no longer safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107316 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 20:21:12 +00:00
Dan Gohman
70eff63008 Revert the part of r107257 which introduced new logic for using 
nsw and nuw flags from IR Instructions. On further consideration,
this isn't valid.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107298 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 17:27:11 +00:00
Dan Gohman
b9f9651445 Improve ScalarEvolution's nsw and nuw preservation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107257 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 07:16:37 +00:00
Dan Gohman
8a18d6b48f When computing a new ConservativeResult, intersect it with 
the old one instead of replacing it, to be more precise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107256 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 06:58:35 +00:00
Dan Gohman
49bda917db Rework scev-aa's basic computation so that it doesn't depend 
on ScalarEvolution successfully folding and preserving
range information for both A-B and B-A. Now, if it gets
either one, it's sufficient.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107249 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 06:12:16 +00:00
Dan Gohman
204b7cad7a Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107248 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 06:09:46 +00:00
Dan Gohman
1104645eef Fix ScalarEvolution's tripcount computation for chains of loops 
where each loop's induction variable's start value is the exit
value of a preceding loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107224 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 23:43:06 +00:00
Dan Gohman
6f205cbceb Fix whitespace style. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107175 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 18:12:34 +00:00
Duncan Sands
374acd0891 Remove a pointless variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107128 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 11:39:45 +00:00
Benjamin Kramer
3432d70d5b Use a more obvious way to avoid compiling functions which are only used when XDEBUG is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107125 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 10:03:11 +00:00
Chandler Carruth
ca9f7efdf8 Jump through some silly hoops to make GCC accept that a function may not always 
be called.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107124 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 06:46:00 +00:00
Dan Gohman
7a64257f94 Just as its not safe to blindly transfer the nsw bit from an add 
instruction to an add scev, it's not safe to blindly transfer the
inbounds flag from a gep instruction to an nsw on the scev for the
gep.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 01:41:41 +00:00
Dan Gohman
6be2bd516a Add an Intraprocedural form of BasicAliasAnalysis, which aims to 
properly handles instructions and arguments defined in different
functions, or across recursive function iterations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 00:50:39 +00:00
Dan Gohman
50f424c3d0 Fix Value::stripPointerCasts and BasicAA to avoid trouble on 
code in unreachable blocks, which have have use-def cycles.
This fixes PR7514.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107071 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 21:16:52 +00:00
Dan Gohman
8d121694a3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107013 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 16:01:37 +00:00
Devang Patel
fd5fdc3863 Use named MDNode, llvm.dbg.sp, to collect subprogram info. This will be used to emit local variable's debug info of deleted functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106989 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 05:53:08 +00:00
Devang Patel
acc6efa176 Do not forget last element, function, while creating Subprogram definition MDNode from subprogram declare MDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106985 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-27 21:04:31 +00:00
Dan Gohman
420ab9102c Eliminate a redundant FoldingSet lookup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106872 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 18:47:08 +00:00
Dan Gohman
eaf6cf28dd Don't try to preserve pointer types in SCEVConstants; the old code 
was over-complicated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106760 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:47:03 +00:00
Dan Gohman
1faa88280e Make the trunc code consistent with the zext and sext code in its 
handling of pointer types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106757 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:33:38 +00:00
Gabor Greif
71339c965c use ArgOperand accessors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106697 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 23:38:07 +00:00
Gabor Greif
8ff72b5344 use the new isFreeCall API and ArgOperand accessors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106692 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 22:48:06 +00:00
Gabor Greif
02680f946b minor enhancement to llvm::isFreeCall API: return CallInst; no functional change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 21:51:12 +00:00
Gabor Greif
e3401c4fae use ArgOperand getters 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106685 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 21:41:47 +00:00
Dan Gohman
605c14fb11 Replace ScalarEvolution's private copy of getLoopPredecessor 
with LoopInfo's public copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106603 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 23:43:28 +00:00
Dan Gohman
fe60104ac9 Use pre-increment instead of post-increment when the result is not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106542 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 15:08:57 +00:00
Dan Gohman
9d4588ffad Allow "exhaustive" trip count evaluation on phi nodes with all 
constant operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 13:15:46 +00:00
Devang Patel
a762b09310 Use single interface, using twine, to get named metadata. 
getNamedMetadata().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106518 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 01:19:38 +00:00
Devang Patel
d1bbc6b70e Do not rely on Twine temporaries to survive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106515 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 01:01:58 +00:00
Dan Gohman
403a8cdda5 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 19:47:52 +00:00
Devang Patel
10de3bb4fd Do not directly use function names to construct new name for named metadata. 
"llvm.dbg.lv.~A" is not a valid name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106438 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 18:36:58 +00:00
Dan Gohman
6f5fed253f Restore a call to rememberInstruction which was accidentally dropped 
in refactoring.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 22:50:35 +00:00
Dan Gohman
b92654d9c9 Fix ScalarEvolution's "exhaustive" trip count evaluation code to avoid 
assuming that loops are in canonical form, as ScalarEvolution doesn't
depend on LoopSimplify itself. Also, with indirectbr not all loops can
be simplified. This fixes PR7416.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 14:17:24 +00:00
Dan Gohman
485c43fc47 Factor out duplicated code for reusing and inserting casts into 
a helper function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 13:25:23 +00:00
Dan Gohman
3bf63768e5 Revert r106304 (105548 and friends), which are the SCEVComplexityCompare 
optimizations. There is still some nondeterminism remaining.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106306 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:54:20 +00:00
Dan Gohman
78db186d2d Reapply 105540, 105542, and 105548, and revert r105732. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106304 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:26:04 +00:00
Dan Gohman
e0f0c7b024 Reapply 105546. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106302 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:12:32 +00:00
Dan Gohman
c72f0c8c57 Reapply 105544. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106301 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:09:27 +00:00
Dan Gohman
07587a4500 Remove getIntegerSCEV; it's redundant with getConstant, and getConstant 
is more consistent with the ConstantInt API.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106281 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:33:50 +00:00
Dan Gohman
e368b460a2 Eliminate unnecessary uses of getZExtValue(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:22:04 +00:00
Dan Gohman
4f46e14b8a Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106260 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 00:53:08 +00:00
Dan Gohman
27ed6a41ce Simplify this code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106254 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 23:34:09 +00:00
Jim Grosbach
08f55d02da A few more places where SCEVExpander bits need to skip over debug intrinsics 
when iterating through instructions. Yet more work for rdar://7797940

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106149 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 21:13:38 +00:00
Devang Patel
ffd33cd364 Check function pointer first, before comparing function names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106088 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 06:42:02 +00:00