Devang Patel
c7fe32e840
Do not use virtual function to identify an analysis pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48520 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19 00:48:41 +00:00
Dale Johannesen
e856685710
Get rid of compilation warnings. Per Devang.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48478 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-18 01:52:17 +00:00
Devang Patel
1cee94f041
Identify Analysis pass.
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Do not run analysis pass again if analysis info is still available.
This fixes PR1441.
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2008-03-18 00:39:19 +00:00
Dan Gohman
d7a3541a05
Move the PMStack class out of Pass.h and into PassManagers.h.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-14 18:14:29 +00:00
Nick Lewycky
529de8a457
Update the block cloner which fixes bugpoint on code using unwind_to (phew!)
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and also update the cloning interface's major user, the loop optimizations.
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2008-03-09 05:24:34 +00:00
Dan Gohman
e8ae2fe2a8
Add -analyze support to postdomtree.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-27 18:38:29 +00:00
Anton Korobeynikov
ae9f3a3b7c
Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:08:44 +00:00
Nick Lewycky
3e63076980
Add 'umax' similar to 'smax' SCEV. Closes PR2003.
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Parse reversed smax and umax as smin and umin and express them with negative
or binary-not SCEVs (which are really just subtract under the hood).
Parse 'xor %x, -1' as (-1 - %x).
Remove dead code (ConstantInt::get always returns a ConstantInt).
Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets
passed into a uint64_t. Instead, create the -1 directly from
ConstantInt::getAllOnesValue().
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2008-02-20 06:48:22 +00:00
Owen Anderson
30b4bd4d10
Re-apply the patch to improve the optimizations of memcpy's, with several
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bugs fixed. This now passes PPC bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47026 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 21:15:18 +00:00
Wojciech Matyjewicz
e3320a1bcc
Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an
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arbitrary iteration.
The patch:
1) changes SCEVSDivExpr into SCEVUDivExpr,
2) replaces PartialFact() function with BinomialCoefficient(); the
computations (essentially, the division) in BinomialCoefficient() are
performed with the apprioprate bitwidth necessary to avoid overflow;
unsigned division is used instead of the signed one.
Computations in BinomialCoefficient() require support from the code
generator for APInts. Currently, we use a hack rounding up the
neccessary bitwidth to the nearest power of 2. The hack is easy to turn
off in future.
One remaining issue: we assume the divisor of the binomial coefficient
formula can be computed accurately using 16 bits. It means we can handle
AddRecs of length up to 9. In future, we should use APInts to evaluate
the divisor.
Thanks to Nicholas for cooperation!
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2008-02-11 11:03:14 +00:00
Wojciech Matyjewicz
402689d11a
Add a check if the initial value of the induction variable is 0 (the method comment says it should be).
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2008-02-09 18:06:58 +00:00
Dan Gohman
fa9b80eb64
Avoid unnecessarily casting away const, fixing a FIXME.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46591 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 01:05:10 +00:00
Dan Gohman
ba42d2b937
Add comments describing what the loop depth values mean. Also, make a
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minor simplification to the loop depth calculation code.
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2008-01-29 12:12:40 +00:00
Chris Lattner
fadcd4e60b
Move typedef of loop to top of the file where it is more obvious.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45857 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 06:29:42 +00:00
Chris Lattner
131bd2ecf7
Fix 80 col violations
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45856 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11 06:27:42 +00:00
Wojciech Matyjewicz
b670a1737b
fix typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45595 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 20:04:08 +00:00
Chris Lattner
7ed47a1335
Don't attribute in file headers anymore. See llvmdev for the
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discussion of this change. Boy are my fingers tired. ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 19:59:42 +00:00
Chris Lattner
f286f6fd93
Fix PR1850 by removing an unsafe transformation from VMCore/ConstantFold.cpp.
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Reimplement the xform in Analysis/ConstantFolding.cpp where we can use
targetdata to validate that it is safe. While I'm in there, fix some const
correctness issues and generalize the interface to the "operand folder".
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2007-12-10 22:53:04 +00:00
Owen Anderson
5fc4abac3d
Fix several cache coherence bugs in MemDep/GVN that were found. Also add some (disabled) debugging code
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to make such problems easier to diagnose in the future, written by Duncan Sands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44695 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 01:37:09 +00:00
Duncan Sands
dff6710717
Integrate the readonly/readnone logic more deeply
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into alias analysis. This meant updating the API
which now has versions of the getModRefBehavior,
doesNotAccessMemory and onlyReadsMemory methods
which take a callsite parameter. These should be
used unless the callsite is not known, since in
general they can do a better job than the versions
that take a function. Also, users should no longer
call the version of getModRefBehavior that takes
both a function and a callsite. To reduce the
chance of misuse it is now protected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44487 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 07:51:45 +00:00
Owen Anderson
528b00adc4
Fixes for MachineLoopInfo, mostly from Evan. With these, it should be almost useable!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44480 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 03:01:39 +00:00
Owen Anderson
e4ad9c70e4
Add MachineLoopInfo. This is not yet tested.
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2007-11-27 22:47:08 +00:00
Owen Anderson
d735ee85db
Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. This involves a small interface change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44348 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 03:43:35 +00:00
Owen Anderson
af9ac8f821
Add accessor for getting the underlying templated type. This is necessary for templated LoopInfo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44347 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 03:33:40 +00:00
Anton Korobeynikov
fd94dd58ff
Remove another leak. Due to some reason AliasSetTracker didn't had any dtor...
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44320 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 23:52:02 +00:00
Nick Lewycky
c54c561c9f
Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44319 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-25 22:41:31 +00:00
Anton Korobeynikov
d91cbf352a
Remove a leak. Destroy LoopInfoBase object. releaseMemory() is actually called in its dtor.
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2007-11-25 18:41:39 +00:00
Dan Gohman
50cdabcfd5
Remove meaningless qualifiers from return types, avoiding compiler warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44240 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 20:46:23 +00:00
Dan Gohman
adf3eab773
Add explicit keywords.
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2007-11-19 15:30:20 +00:00
Anton Korobeynikov
4e1a0e386c
Reverted r44163 per request
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44177 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 18:33:16 +00:00
Nick Lewycky
65e2da3b4d
Fix handling of overflow in loop calculation by adding new UDiv SCEV. This SCEV
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is disabled in the sense that it will refuse to create one from a UDiv
instruction, until the code is better tested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44163 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 06:30:50 +00:00
Owen Anderson
44a95e06cc
More templatization.
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2007-11-15 05:00:15 +00:00
Owen Anderson
019b92a70c
Start the process of making MachineLoopInfo possible by templating Loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44097 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 02:33:58 +00:00
Owen Anderson
1ef14f6e76
VAArgInst does, in fact, read memory.
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2007-11-02 04:01:21 +00:00
Owen Anderson
5d32ec4cb0
Some fixes to get MachineDomTree working better.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43541 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-31 03:30:14 +00:00
Dan Gohman
9962054775
Add explicit keywords.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43464 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 19:52:04 +00:00
Owen Anderson
08895f8866
Add a first attempt at dominator information for MBB's. Use with caution: this has been tested to compile. It has not yet been confirmed to generate correct analysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43438 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 04:50:50 +00:00
Owen Anderson
4d6d5783d8
Make it possible for DomTreeBase to be constructed from MachineFunction's as well as just Function's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43321 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-25 00:16:57 +00:00
Owen Anderson
7feb3be0b7
Make DomTreeBase not a FunctionPass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43263 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23 21:42:49 +00:00
Owen Anderson
78daec973e
Unbreak the build. Forgot to commit this file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43260 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23 21:04:37 +00:00
Owen Anderson
d20cc14dbf
Make DomTree and PostDomTree thin wrappers around DomTreeBase, rather than inheriting from it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43259 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23 20:58:37 +00:00
Dan Gohman
246b2564d3
Move the SCEV object factors from being static members of the individual
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SCEV subclasses to being non-static member functions of the ScalarEvolution
class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43224 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22 18:31:58 +00:00
Owen Anderson
7b714321df
Move Split<...>() into DomTreeBase. This should make the #include's of DominatorInternals.h
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in CodeExtractor and LoopSimplify unnecessary.
Hartmut, could you confirm that this fixes the issues you were seeing?
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2007-10-18 05:13:52 +00:00
Hartmut Kaiser
efd4a5144b
Updated VC++ build system.
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Silenced some VC warnings.
I'm getting linker errors, though: unresolved externals:
llvm::Split<class llvm::BasicBlock *,struct llvm::GraphTraits<class llvm::BasicBlock *> >(class llvm::DominatorTreeBase<class llvm::BasicBlock> &,class llvm::BasicBlock *)
and
llvm::Split<struct llvm::Inverse<class llvm::BasicBlock *>,struct llvm::GraphTraits<struct llvm::Inverse<class llvm::BasicBlock *> > >(class llvm::DominatorTreeBase<class llvm::BasicBlock> &,class llvm::BasicBlock *)
Where are these defined?
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2007-10-17 14:56:40 +00:00
Owen Anderson
05d2318fbd
Move splitBlock into DomTreeBase from DomTree.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43059 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17 02:03:17 +00:00
Owen Anderson
280f8a2ece
Fix some formatting.
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2007-10-16 22:59:15 +00:00
Owen Anderson
49b653aa6a
Template DominatorTreeBase by node type. This is the next major step towards
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having dominator information on MBB's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43036 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 19:59:25 +00:00
Owen Anderson
1aad74c9e8
Begin the process of allowing DomTree on MBB's. Step One: template DomTreeNode by making it a typedef of a templated DomTreeNodeBase.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42743 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-08 07:44:39 +00:00
Owen Anderson
9cb7f49ee9
Completely merge the implementation details of DomTree and PostDomTree.
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Also, add a FIXME for a bug in PostDomTree calculation I noticed while writing this,
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2007-10-03 21:25:45 +00:00
Owen Anderson
471ab54df7
Factor some code from the DomTree and PostDomTree calculate methods up into
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each one's runOnFunction method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42563 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03 03:20:17 +00:00