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3462 Commits

Author SHA1 Message Date
Dan Gohman
0ad2c7ace8 Various optimizations. Don't compare two loops' depths 
when they are the same loop. Don't compare two instructions'
loop depths when they are in the same block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 21:24:58 +00:00
Dan Gohman
9cba97886c When testing whether one loop contains another, test this directly 
rather than testing whether the loop contains the other's header.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:23:25 +00:00
Dan Gohman
9f1fb42b7e Add a const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:17:27 +00:00
Dan Gohman
58a85b96b8 When creating a symmetric SCEV with a constant operand, put 
the constant operand on the left, as that's where ScalarEvolution
will end up canonicalizing to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111037 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:17:14 +00:00
Dan Gohman
71c4144076 An add recurrence is loop-invariant in any loop inside of its 
associated loop. This avoids potentially expensive traversals
of the add recurrence's operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:11:39 +00:00
Dan Gohman
727356fc7d Optimize ScalarEvolution::getAddExpr's operand factoring code by 
having it finish processing all of the muliply operands before
starting the whole getAddExpr process over again, instead of
immediately after the first simplification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110916 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 15:00:23 +00:00
Dan Gohman
918e76b8b5 Hoist some loop-invariant code out of a hot loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110915 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 14:52:55 +00:00
Dan Gohman
dc7692b1ad Optimize ScalarEvolution::getAddExpr's duplicate operand detection 
by having it finish processing the whole operand list before
starting the whole getAddExpr process over again, instead of
immediately after the first duplicate is found.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 14:46:54 +00:00
Devang Patel
ebd53742c6 Even if a variable has constant value all the time, it is still a variable in gdb's eyes. 
Tested by scope.exp in gdb testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110876 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 23:17:54 +00:00
Owen Anderson
cf6abd2486 Fix a subtle use-after-free issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110863 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 22:36:04 +00:00
Dan Gohman
bd4d66d56a Make LoopPass::getContainedPass return a LoopPass* instead of a Pass* 
and remove casts from all its callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 20:34:43 +00:00
Owen Anderson
2d0f2470ff Improve indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 04:24:25 +00:00
Dan Gohman
4ee87398e8 When analyzing loop exit conditions combined with and and or, don't 
make any assumptions about when the two conditions will agree on when
to permit the loop to exit. This fixes PR7845.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110758 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 00:12:36 +00:00
Dan Gohman
af08a36bd6 Rename and reorder the arguments to isImpliedCond, for consistency and clarity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 23:46:30 +00:00
Owen Anderson
625051be7e Now that we're using ConstantRange to represent potential values, make use of that represenation to 
create constraints from comparisons other than eq/neq.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 23:20:01 +00:00
Devang Patel
6bf058c9aa Add missing argument. CreateCompositeTypeEx() users, please verify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110717 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:22:49 +00:00
Owen Anderson
9f01406179 Switch over to using ConstantRange to track integral values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110714 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:03:09 +00:00
Devang Patel
e7e5a0f6fb Do not forget debug info for enums. Use named mdnode to keep track of these types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110712 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:01:20 +00:00
Tobias Grosser
73362c820b RegionInfo: Do not assert if a BB is not part of the dominance tree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 09:54:35 +00:00
Devang Patel
2936807564 Handle TAG_constant for integers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110656 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 07:11:13 +00:00
Devang Patel
2739896cdd Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110607 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 21:39:24 +00:00
Owen Anderson
2f3ffb80fa Add ConstantRange information to the debugging output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110598 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 20:50:46 +00:00
Owen Anderson
90c579de5a Reapply r110396, with fixes to appease the Linux buildbot gods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:33:48 +00:00
Dan Gohman
e26a7b5e21 Implement a proper getModRefInfo for va_arg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110458 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:24:38 +00:00
Dan Gohman
b9db52dcbc Be more conservative in the face of volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:11:28 +00:00
Dan Gohman
9b8639c9bd Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:10:45 +00:00
Dan Gohman
6ce9d8b0ed Move all the logic for function attributes and call attributes out of the 
AliasAnalysis base class and into BasicAliasAnalyais. This avoids confusion
about where such logic is happening when there are other AliasAnalysis
implementations present.

Move the logic for translating two-callsite getModRefInfo queries into
other AliasAnalysis queries out of BasicAliasAnalysis and into the
AliasAnalysis base class, as it is useful for other AliasAnalysis
implementations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 01:25:49 +00:00
Owen Anderson
e6a4a36096 Fix botched revert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110416 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:36:20 +00:00
Owen Anderson
1f74590e9d Revert r110396 to fix buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:23:35 +00:00
Dan Gohman
5eeb19d189 Fix 80-column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:48:14 +00:00
Owen Anderson
9ccaf53ada 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:42:04 +00:00
Dan Gohman
130073904f Implement AccessesArguments checking in the two-callsite form 
of BasicAA::getModRefInfo. This allows BasicAA to say that two
memset calls to non-aliasing memory locations don't interfere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110393 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:34:50 +00:00
Dan Gohman
0c3f3358df Yes, we can do better, but this is not the place for it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110391 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:23:32 +00:00
Owen Anderson
5be2e78fa1 Add the beginnings of infrastructure for range tracking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:59:19 +00:00
Owen Anderson
db78d73d96 Split the tag and value members of LVILatticeVal in preparation for expanding the lattice to something that won't fit in two bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:10:46 +00:00
Dan Gohman
5fa417c790 Fix memdep's code for reasoning about dependences between two calls. A Ref 
response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.

Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:09:15 +00:00
Dan Gohman
34fa82f7e8 Revert r110270 for now. It appears to uncover a memdep bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 00:43:10 +00:00
Dan Gohman
907857d746 The trouble with testing for "ModRef" and "NoModRef" is that 
one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110280 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 23:37:55 +00:00
Dan Gohman
3dcc91ee8c The two-callsite form of AliasAnalysis::getModRefInfo is documented 
to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.

Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 22:56:29 +00:00
Dan Gohman
ddd3a8899a Fix a minor bug which resulted in intermediate calculations 
using wider types than are necessary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 19:52:50 +00:00
Torok Edwin
e89652ccad Add a missing function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110195 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 11:42:45 +00:00
Dan Gohman
a41af344c2 Remove PointerAccessInfo, which nothing was using. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110167 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 23:08:10 +00:00
Dan Gohman
79fca6fea8 Thread const correctness through a bunch of AliasAnalysis interfaces and 
eliminate several const_casts.

Make CallSite implicitly convertible to ImmutableCallSite.

Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 21:48:53 +00:00
Dan Gohman
6fc24467e9 The singular of "indices" is "index". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 20:23:52 +00:00
Dan Gohman
17f647d332 Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 20:20:56 +00:00
Dan Gohman
14a498a486 Make AliasAnalysis::getModRefInfo conservative in the face of volatility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 17:27:43 +00:00
Dan Gohman
84b8ad321b Fix a typo Devang noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110115 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 16:48:31 +00:00
Michael J. Spencer
4473b37018 Fix CMake build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110097 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 02:38:20 +00:00
Dan Gohman
ef1cfac9e5 Introduce a symbolic constant for ~0u for use with AliasAnalysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110091 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 01:03:11 +00:00
Dan Gohman
847a84efd2 Add a convenient form of AliasAnalysis::alias for the case where the sizes 
are unknown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 00:56:30 +00:00
Dan Gohman
ab37f50838 Make SCEVUnknown a CallbackVH, so that it can be notified directly 
of Value deletions and RAUWs, instead of relying on ScalarEvolution's
Scalars map being notified, as that's complicated at best, and
insufficient in general.

This means SCEVUnknown needs a non-trivial destructor, so introduce
a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:49:30 +00:00
Dan Gohman
c182cb5784 Sketch up a preliminary Type-Based Alias Analysis implementation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110077 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:11:01 +00:00
Dan Gohman
a8afb2a623 Add a lint check for indirectbr with no successors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110074 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:06:43 +00:00
Devang Patel
5b164b5a5c Add explicit constructors. Patch by Renato Golin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110072 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 22:51:46 +00:00
Dan Gohman
811edc1f1a Fix namespace polution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110056 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 18:50:06 +00:00
Oscar Fuentes
ee56c42168 Prefix next' iterator operation with llvm::'. 
Fixes potential ambiguity problems on VS 2010.

Patch by nobled!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 06:00:15 +00:00
Owen Anderson
7f9cb744f2 Add an initial implementation of PHI translation for LazyValueInfo. This involves rolling back some 
of my earlier data structure improvements until I can ensure that there are no iterator invalidation problems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109935 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 23:59:40 +00:00
Owen Anderson
81881bcd35 Revert my last two patches to LVI, which recent changes have exposed a miscompilation in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 20:56:07 +00:00
Eric Christopher
e6cbfa6b09 Speculatively revert r109705 since it seems to be causing some build bot 
angst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 01:25:38 +00:00
Dan Gohman
c6743207e2 Factor out some of the code for updating old SCEVUnknown values, and 
extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109705 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 00:17:55 +00:00
Owen Anderson
e2fb451dbb Pass the queried value by argument rather than in a member, in preparation for supporting PHI translation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109701 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 23:50:08 +00:00
Owen Anderson
9da5c997c0 Get rid of LVIQuery as a distinct data structure, so that we don't have to initialize a new set of maps on every query. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109679 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 22:07:25 +00:00
Daniel Dunbar
329878f4dd RegionInfo: Make sure to free cached nodes; Tobias, please check! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109650 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 20:28:50 +00:00
Gabor Greif
5d4b32ef96 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109585 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:31:37 +00:00
Gabor Greif
ce4a62639f use Value* constructor of CallSite to create potentially improper site, and test that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109580 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:35:54 +00:00
Gabor Greif
3737984e95 use Value* constructor of CallSite to create potentially improper site 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:19:46 +00:00
Gabor Greif
30ae792f06 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109578 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:57:28 +00:00
Gabor Greif
b0686ea808 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:46:09 +00:00
Dan Gohman
81f9121cda Make SCEVCallbackVH::allUsesReplacedWith update the old SCEVUnknown 
object, as it may still be referenced by SCEVs not cleaned up by the
use list traversal.

Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown
object for the original value, not for any value in the use list,
because other SCEVUnknown values aren't necessary obsolete at that
point.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109570 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 01:09:07 +00:00
Dan Gohman
59846aced2 Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete 
the old value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109567 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 00:28:25 +00:00
Owen Anderson
9a65dc9968 Rearrange several datastructures in LazyValueInfo to improve compile time. 
This is still not perfect, but better than it was before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 23:58:11 +00:00
Gabor Greif
b344a346f1 reintroduce original (asserting) semantics of CallSite(Instruction *II) 
add instead a CallSite(Value* V) constructor that is consistent with ImmutableCallSize
and use that one in client code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:53:28 +00:00
Gabor Greif
622b7cf147 recommit simplification (originally r109504, backed out in r109508) now that problem in CallSiteBase is fixed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:02:00 +00:00
Gabor Greif
49d0bca86c back out r109504, breaks the bots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:18:11 +00:00
Gabor Greif
c0d4aed6f7 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109504 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:38:38 +00:00
Gabor Greif
0de11e0e66 use ImmutableCallSite for const-corrgoodness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109503 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:15:29 +00:00
Tobias Grosser
0e6fcf4be3 RegionInfo: Add getMaxRegionExit() 
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109496 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 08:39:43 +00:00
Tobias Grosser
082d587d35 Add function to query RegionInfo about loops. 
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 04:17:13 +00:00
Owen Anderson
cfa7fb6df5 Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109424 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:48:03 +00:00
Dan Gohman
6ebfd72f37 Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable 
it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:28:14 +00:00
Dan Gohman
a29dbd2dcc Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:34:05 +00:00
Dan Gohman
f8336a75c2 Eliminate getCanonicalInductionVariableIncrement's last user and 
eliminate it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:34:51 +00:00
Dan Gohman
63137d5681 Simplify this code; it can use the regular CFG utlities rather than 
the BlockTraits abstractions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109268 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:25:16 +00:00
Dan Gohman
304a7a6242 Micro-optimize SCEVComplexityCompare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:20:52 +00:00
Dan Gohman
e72079ac69 Add a const qualifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:18:55 +00:00
Gabor Greif
f95eef695d use cascading operator-> feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109104 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:49:27 +00:00
Gabor Greif
96f1d8ebdd mass elimination of reliance on automatic iterator dereferencing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:36:47 +00:00
Gabor Greif
11aa60d05a use -> instead of (*). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109094 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:12:32 +00:00
Gabor Greif
3d8586eb63 cache dereferenced iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109093 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:07:46 +00:00
Tobias Grosser
f96b006367 Add new RegionInfo pass. 
The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 07:46:31 +00:00
Dan Gohman
17aa92c92a Make NamedMDNode not be a subclass of Value, and simplify the interface 
for creating and populating NamedMDNodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 23:38:33 +00:00
Owen Anderson
d8cc7be026 Add INSTANTIATE_AG_PASS, which combines RegisterPass<> with RegisterAnalysisGroup<> for pass registration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109058 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 23:07:00 +00:00
Owen Anderson
d13db2c59c Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 22:09:45 +00:00
Jim Grosbach
e62b690607 tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 21:36:25 +00:00
Dan Gohman
872814ae04 Disallow null as a named metadata operand. 
Make MDNode::destroy private.
Fix the one thing that used MDNode::destroy, outside of MDNode itself.

One should never delete or destroy an MDNode explicitly. MDNodes
implicitly go away when there are no references to them (implementation
details aside).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 18:54:18 +00:00
Dan Gohman
fc3678a346 Fix SCEV denormalization of expressions where the exit value from 
one loop is involved in the increment of an addrec for another
loop. This fixes rdar://8168938.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108863 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 17:06:20 +00:00
Dan Gohman
eb4152c192 Add a fast path for x - x. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:53:00 +00:00
Dan Gohman
133e295b36 Simplify this code; LoopInfo::getCanonicalInductionVariable will only 
find integer induction variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108853 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:46:58 +00:00
Dan Gohman
7c58dbd88c Make getOrInsertCanonicalInductionVariable guarantee that its 
result is a PHINode*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108852 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:44:52 +00:00
Dan Gohman
b7391fadff Change an argument from an Instruction* to a Value*, which is all 
that is needed here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:34:50 +00:00
Dan Gohman
082d6b6536 Minor code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:32:11 +00:00
Owen Anderson
8be3291f59 Speculatively revert r108813, in an attempt to get the self-host buildbots working again. I don't see why this patch 
would cause them to fail the way they are, but none of the other intervening patches seem likely either.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108818 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 08:26:15 +00:00
Owen Anderson
9e081004da Reapply r108794, a fix for the failing test from last time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108813 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 06:52:42 +00:00
Daniel Dunbar
e8a469cdb4 Revert r108794, "Separate PassInfo into two classes: a constructor-free 
superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo).", it is
breaking teh everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108805 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 03:06:07 +00:00
Owen Anderson
8ba15cb709 Separate PassInfo into two classes: a constructor-free superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108794 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 01:19:58 +00:00
Dan Gohman
fb272ad614 Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 00:57:18 +00:00
Stuart Hastings
0db4271069 Correct line info for declarations/definitions. Radar 8063111. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108784 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 23:56:30 +00:00
Gabor Greif
a6aac4c5bc eliminate CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 09:38:02 +00:00
Dan Gohman
bb5d92741b Fix the order that SCEVExpander considers add operands in so that 
it doesn't miss an opportunity to form a GEP, regardless of the
relative loop depths of the operands. This fixes rdar://8197217.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108475 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 23:38:13 +00:00
Dan Gohman
f53462d2ea Teach ScalarEvolution how to fold trunc(undef) and anyext(undef) to undef. 
This helps LSR behave more consistently on bugpoint-reduced testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108451 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:02:11 +00:00
Gabor Greif
e616690466 cache another dereferenced iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 10:19:23 +00:00
Chris Lattner
d2bfe54b0a Fix PR7647, handling the case when 'To' ends up being 
mutated by recursive simplification.  This also enhances
ReplaceAndSimplifyAllUses to actually do a real RAUW
at the end of it, which updates any value handles
pointing to "From" to start pointing to "To".  This
seems useful for debug info and random other VH users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:36:08 +00:00
Eli Friedman
e2f93131fb Revert r108401; it breaks bootstrap :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 05:09:31 +00:00
Eli Friedman
3ed60a2a22 Add AssertingVH which makes PR7647 break consistently. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 04:46:14 +00:00
Dan Gohman
545d00645c Add a lint check for mismatched return types, inspired by PR6944. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108162 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 18:02:04 +00:00
Duncan Sands
3472766f9e Convert some tab stops into spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108130 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 08:16:59 +00:00
Chandler Carruth
490b8f5d64 Add parentheses around an || to correct the logic. Also silences a GCC warning 
that was actually useful here.

Chris, please double check that this is the correct interpretation. I was
pretty sure, and ran it by Nick as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108129 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 06:47:05 +00:00
Chris Lattner
eae2895120 fix PR7429, a crash turning a load from a string into a float. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 00:22:51 +00:00
Gabor Greif
19e5ada58a remove useless cast and fix typos in comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107989 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:42:04 +00:00
Gabor Greif
f64f9cf7ec cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:39:02 +00:00
Gabor Greif
8ba992ad52 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107982 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:22:36 +00:00
Gabor Greif
d7cc5215f1 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107978 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:53:42 +00:00
Gabor Greif
1f2c0c9ead cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:52:36 +00:00
Gabor Greif
7656018c22 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107976 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:40:10 +00:00
Gabor Greif
5891ac8be8 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107967 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:28:41 +00:00
Gabor Greif
517e124d53 do not repeatedly dereference use_iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 13:17:13 +00:00
Stuart Hastings
99cfb69f17 Reverting r107918 and r107919. Radar 8063111. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107930 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-08 23:25:39 +00:00
Stuart Hastings
c0e2639a34 Fix decl/def debug info for template functions. Radar 8063111. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107919 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-08 22:28:59 +00:00
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