History log of /external/llvm/lib/Analysis/SparsePropagation.cpp
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c10fa6c801e48771b5eade50afc2fe6abaf08227 08-Mar-2012 Stepan Dyatkovskiy <stpworld@narod.ru> Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html

Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*".

ConstCaseIt is just a read-only iterator.
CaseIt is read-write iterator; it allows to change case successor and case value.

Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters.

Main way of iterator usage looks like this:
SwitchInst *SI = ... // intialize it somehow

for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) {
BasicBlock *BB = i.getCaseSuccessor();
ConstantInt *V = i.getCaseValue();
// Do something.
}

If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method.
If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method.

There are also related changes in llvm-clients: klee and clang.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Analysis/SparsePropagation.cpp
24473120a253a05f3601cd3373403b47e6d03d41 01-Feb-2012 Stepan Dyatkovskiy <stpworld@narod.ru> SwitchInst refactoring.
The purpose of refactoring is to hide operand roles from SwitchInst user (programmer). If you want to play with operands directly, probably you will need lower level methods than SwitchInst ones (TerminatorInst or may be User). After this patch we can reorganize SwitchInst operands and successors as we want.

What was done:

1. Changed semantics of index inside the getCaseValue method:
getCaseValue(0) means "get first case", not a condition. Use getCondition() if you want to resolve the condition. I propose don't mix SwitchInst case indexing with low level indexing (TI successors indexing, User's operands indexing), since it may be dangerous.
2. By the same reason findCaseValue(ConstantInt*) returns actual number of case value. 0 means first case, not default. If there is no case with given value, ErrorIndex will returned.
3. Added getCaseSuccessor method. I propose to avoid usage of TerminatorInst::getSuccessor if you want to resolve case successor BB. Use getCaseSuccessor instead, since internal SwitchInst organization of operands/successors is hidden and may be changed in any moment.
4. Added resolveSuccessorIndex and resolveCaseIndex. The main purpose of these methods is to see how case successors are really mapped in TerminatorInst.
4.1 "resolveSuccessorIndex" was created if you need to level down from SwitchInst to TerminatorInst. It returns TerminatorInst's successor index for given case successor.
4.2 "resolveCaseIndex" converts low level successors index to case index that curresponds to the given successor.

Note: There are also related compatability fix patches for dragonegg, klee, llvm-gcc-4.0, llvm-gcc-4.2, safecode, clang.



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/external/llvm/lib/Analysis/SparsePropagation.cpp
a7b0cb759433c715065440ee2a963a04db7f2b0b 15-Nov-2011 Benjamin Kramer <benny.kra@googlemail.com> Remove all remaining uses of Value::getNameStr().

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/external/llvm/lib/Analysis/SparsePropagation.cpp
89282915fdc03561b7d87ecd91126db7643e304d 23-Dec-2009 David Greene <greened@obbligato.org> Convert debug messages to use dbgs(). Generally this means
s/errs/dbgs/g except for certain special cases.


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43ea505fb07e303721d92f2b2bdda6e601868523 19-Dec-2009 Dan Gohman <gohman@apple.com> Eliminate unnecessary LLVMContexts.


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ab21db79ef1d2530880ad11f21f0b87ffca02dd4 28-Oct-2009 Chris Lattner <sabre@nondot.org> rename indbr -> indirectbr to appease the residents of #llvm.


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7b876e464478bfbafb30b31cd205848fbdebcc8a 27-Oct-2009 Chris Lattner <sabre@nondot.org> make the build build.


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2688bcbee188c1b5071f3a2b38923cd06013f490 27-Oct-2009 Chris Lattner <sabre@nondot.org> Random updates to passes for indbr, I need blockaddress before I can do much more.


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c2fc1fec6c8c5360828aa778e8fcc446bb9c6ae9 19-Sep-2009 Nick Lewycky <nicholas@mxc.ca> Add a comment explaining why you would ever want to do this.


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/external/llvm/lib/Analysis/SparsePropagation.cpp
875646f376f6c83bf8426fdb44e1dbf312cf784e 19-Sep-2009 Nick Lewycky <nicholas@mxc.ca> Lett users of sparse propagation do their own thing with phi nodes if they want
to. This can be combined with LCSSA or SSI form to store more information on a
PHINode than can be computed by looking at its incoming values.


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1134dc5cc0cb83abcdf072dc4300cd7a898f830c 18-Sep-2009 Nick Lewycky <nicholas@mxc.ca> Add newlines.


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bdff548e4dd577a72094d57b282de4e765643b96 23-Aug-2009 Chris Lattner <sabre@nondot.org> eliminate the "Value" printing methods that print to a std::ostream.
This required converting a bunch of stuff off DOUT and other cleanups.


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5defacc6e605f4651c6300237cef8e9bb2eb6d0e 31-Jul-2009 Owen Anderson <resistor@mac.com> Move getTrue() and getFalse() to 2.5-like APIs.


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460f656475738d1a95a6be95346908ce1597df25 26-Jul-2009 Daniel Dunbar <daniel@zuster.org> Remove Value::getName{Start,End}, the last of the old Name APIs.


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b3056faa5554ded7ac1ac5865d10ef5839fb77d3 21-Jul-2009 Owen Anderson <resistor@mac.com> Rename getConstantInt{True|False} to get{True|False} at Chris' behest.


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76f600b205606a055ec35e7d3fd1a99602329d67 07-Jul-2009 Owen Anderson <resistor@mac.com> Finish LLVMContext-ing lib/Analysis. This required pushing LLVMContext's through the ValueTracking API.


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1d9887054afed2639d1c7490bc96f1e2cc7861ea 11-Mar-2009 Torok Edwin <edwintorok@gmail.com> Make Print callable from a pass's print method: add const qualifier. No
functionality change.


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afcde473c5baf292038ec494917f18c77a043340 09-Aug-2008 Chris Lattner <sabre@nondot.org> "This patch adds a virtual call to AbstractLatticeFunction to derive a
type lattice value for an Argument*, giving clients the opportunity to
use something other than Top for it if they choose to."

Patch by John McCall!



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ef61af01df5ab39141f532e821920da2f5341406 27-May-2008 Dan Gohman <gohman@apple.com> Use Function::getEntryBlock instead of Function::begin, for clarity.


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b22d6ac348ca632bef17dc8050b14d8cb78218f3 27-May-2008 Dan Gohman <gohman@apple.com> Print debug output when any edge becomes executable, including
the first visited edge.


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28a8dbc35fe6da6b7d2633529b73453aca254207 20-May-2008 Chris Lattner <sabre@nondot.org> Add a bool to isEdgeFeasible that tells it whether to treat unknown
value as undef or untracked.


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4651f3de3489bc82e0fe4a3df14d493148e68fca 12-May-2008 Chris Lattner <sabre@nondot.org> prune #includes.


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ab7d9ccf188da6b07977e3a003a0fe6a07b07e81 12-May-2008 Chris Lattner <sabre@nondot.org> Add a new SparsePropagation analysis utility, which allows you to do
SCCP like sparse lattice analysis with relative ease. Just pick your
lattice function and implement the transfer function and you're good.
Just make sure you don't break monotonicity ;-)


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