* Add a DominatorBase base class to maintain root of Dominator info
* Implement post dominator support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140 91177308-0d34-0410-b5e6-96231b3b80d8

* Added comments
* Made iterators inherit from appropriate iterator base class
* Abstracted out graphs from depth first iterator
* Add "Inverse" traversal of CFG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139 91177308-0d34-0410-b5e6-96231b3b80d8

Update to include right file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138 91177308-0d34-0410-b5e6-96231b3b80d8

Initial checkin of analyze tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137 91177308-0d34-0410-b5e6-96231b3b80d8

Build new analyze tool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136 91177308-0d34-0410-b5e6-96231b3b80d8

Added analyze to path for SetupOpt script

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135 91177308-0d34-0410-b5e6-96231b3b80d8

Add analyze tool to path for Setup script

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134 91177308-0d34-0410-b5e6-96231b3b80d8

IntervalPartition was changed to inherit from vector<Interval*> instead of
contain it so that it would have full iterator access without much work.

Writer includes code to print out IntervalPartition's now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133 91177308-0d34-0410-b5e6-96231b3b80d8

IntervalPartition was changed to inherit from vector<Interval*> instead of
contain it so that it would have full iterator access without much work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132 91177308-0d34-0410-b5e6-96231b3b80d8

*** empty log message ***

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131 91177308-0d34-0410-b5e6-96231b3b80d8

Checkin of new Analysis result printing header

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130 91177308-0d34-0410-b5e6-96231b3b80d8

Code got moved from the lib/Assembly/Writer/IntervalWriter.cpp file to
here.  Updates to correct description n stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129 91177308-0d34-0410-b5e6-96231b3b80d8

Remove code for printing out Analysis data structures.  It got moved

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128 91177308-0d34-0410-b5e6-96231b3b80d8

Update documentation a bit, correct #include guard

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127 91177308-0d34-0410-b5e6-96231b3b80d8

Add note about tool idea.  Change command line of note to be more specific

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126 91177308-0d34-0410-b5e6-96231b3b80d8

Add printing code for dominator info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125 91177308-0d34-0410-b5e6-96231b3b80d8

Checkin of new dominator calculation routines.  These will be improved in
the future to do post dominators and stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124 91177308-0d34-0410-b5e6-96231b3b80d8

Enable printing of dominator related information.

Theis will eventually be moved!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123 91177308-0d34-0410-b5e6-96231b3b80d8

Add new anaysis routines for building dominator related information

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122 91177308-0d34-0410-b5e6-96231b3b80d8

Addition of 'deleter' function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121 91177308-0d34-0410-b5e6-96231b3b80d8

Moved deleter to include/llvm/Tools/STLExtras.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120 91177308-0d34-0410-b5e6-96231b3b80d8

Initial checkin.  Should print dead instructions, except it doesn't do
control dependencies.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119 91177308-0d34-0410-b5e6-96231b3b80d8

Include ADCE pass, rename include/Opt directory to llvm/Optimizations
Optimizations now in opt namespace.
Rename SCCP pass to DoSCCP

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118 91177308-0d34-0410-b5e6-96231b3b80d8

Rename DoSparseConditionalConstantProp -> DoSCCP

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117 91177308-0d34-0410-b5e6-96231b3b80d8

Add note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116 91177308-0d34-0410-b5e6-96231b3b80d8

Add prototypes for ADCE pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115 91177308-0d34-0410-b5e6-96231b3b80d8

Rename DoSparseConditionalConstantProp to DoSCCP

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114 91177308-0d34-0410-b5e6-96231b3b80d8

Optimizations got their own header files
Optimizations now live in the 'opt' namespace
include/llvm/Opt was renamed include/llvm/Optimizations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113 91177308-0d34-0410-b5e6-96231b3b80d8

Implement reduceApply method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new pop_back() method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111 91177308-0d34-0410-b5e6-96231b3b80d8

The ConstRules class got moved to the opt namespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110 91177308-0d34-0410-b5e6-96231b3b80d8

Add a reduceApply method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109 91177308-0d34-0410-b5e6-96231b3b80d8

Split AllOpts.h into lots of little .h files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108 91177308-0d34-0410-b5e6-96231b3b80d8

Export ConstantFoldTerminator, allow it to fold conditional branches to
the same label.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107 91177308-0d34-0410-b5e6-96231b3b80d8

Added documentation.  Constant fold terminators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106 91177308-0d34-0410-b5e6-96231b3b80d8

Added prototype for ConstantFoldTerminator

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105 91177308-0d34-0410-b5e6-96231b3b80d8

Add a check to avoid allowing V->replaceAllUsesWith(V)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104 91177308-0d34-0410-b5e6-96231b3b80d8

Add implementation of BasicBlock::removePredecessor code that was factored
out of DCE.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103 91177308-0d34-0410-b5e6-96231b3b80d8

* Factored RemovePredecessorFromBlock into BasicBlock::removePredecessor
* Avoid messing around with this case:
  br label %A
%A:  br label %A
* Enable optimizations that are correct now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102 91177308-0d34-0410-b5e6-96231b3b80d8

We need to make sure to remove PHI nodes in the successor that cannot be
executed when removing branch dest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101 91177308-0d34-0410-b5e6-96231b3b80d8

Added a note about a new verification the verifier should do
Removed a redundant check

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100 91177308-0d34-0410-b5e6-96231b3b80d8

Added new removePredecessor method prototype

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99 91177308-0d34-0410-b5e6-96231b3b80d8

Added note, moved note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed the obnoxious problem that caused an entire directory to rebuild
even if you only change one .cpp file. Yaay

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97 91177308-0d34-0410-b5e6-96231b3b80d8

Miscellaneous cleanups:
  * Convert post to pre-increment for for loops
  * Use generic programming more
  * Use new Value::cast* instructions
  * Use new Module, Method, & BasicBlock forwarding methods
  * Use new facilities in STLExtras.h
  * Use new Instruction::isPHINode() method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new Sparse Conditional Constant Propogation pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95 91177308-0d34-0410-b5e6-96231b3b80d8

Add command line arguments for Constant Pool Merging & Sparse Conditional Constant Prop

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94 91177308-0d34-0410-b5e6-96231b3b80d8

Put in test of SCCP.  Watch out though, because we need to sort the
constant pool for the final check to work.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93 91177308-0d34-0410-b5e6-96231b3b80d8

Change to use the new GenericBinaryInst class.  Support lots more operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92 91177308-0d34-0410-b5e6-96231b3b80d8

Misc cleanup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91 91177308-0d34-0410-b5e6-96231b3b80d8

* Expose DoConstantPoolMerging
* Cleanups (post->pre increment, new cleaner API, etc)
* Moved stuff into ConstantHandling.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90 91177308-0d34-0410-b5e6-96231b3b80d8

Convert ugly postincrement to efficient preincrement

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89 91177308-0d34-0410-b5e6-96231b3b80d8

* Move stuff around a bit.
* Add reduce_apply_bool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88 91177308-0d34-0410-b5e6-96231b3b80d8

Add instructions to fold unary and binary instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87 91177308-0d34-0410-b5e6-96231b3b80d8

* Use the new reduce_apply_bool template
* Expose Constant Pool Merging from ConstantProp.cpp
* Include definitions for SCCP pass
* InstListType is not neccesary anymore

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86 91177308-0d34-0410-b5e6-96231b3b80d8

getBasicBlocks() is not needed anymore for reading Method data

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85 91177308-0d34-0410-b5e6-96231b3b80d8

Added methods to make dealing with switches and branch instructions
more tolerable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84 91177308-0d34-0410-b5e6-96231b3b80d8

Minor formating changes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83 91177308-0d34-0410-b5e6-96231b3b80d8

Make a new GenericBinaryInst class, instead of providing lots of silly
little classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82 91177308-0d34-0410-b5e6-96231b3b80d8

Convert postincrements to more efficient preincrements

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new slew of functions to allow dynamic_cast<> like operation for
upcasting Value's to their subclasses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80 91177308-0d34-0410-b5e6-96231b3b80d8

Add extra forwarding accessor methods so that getMethodList(), getBasicBlocks()
and getInstList() are obsolete... except for when modifying those lists.  This
makes code much more succinct and to the point.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79 91177308-0d34-0410-b5e6-96231b3b80d8

Add more notes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78 91177308-0d34-0410-b5e6-96231b3b80d8

Filter out some more stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77 91177308-0d34-0410-b5e6-96231b3b80d8

Moved UnaryOperator::create to InstrTypes.cpp until there is an iUnaryOps.cpp
Moved BinaryOperator::create to iBinaryOperators.cpp
Add getUniqueName to SymbolTable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76 91177308-0d34-0410-b5e6-96231b3b80d8

Implement induction variable injection!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75 91177308-0d34-0410-b5e6-96231b3b80d8

Renamed get.*Operator to create seeing that it would have to be qualified
with the classname anyways.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74 91177308-0d34-0410-b5e6-96231b3b80d8

* Rename get.*Operator to create seeing that it would have to be qualified
  with the classname anyways.
* Add an isPHINode() method to Instruction
* Add getUniqueName() to SymbolTable class
* Add an insert method to ValueHolder

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73 91177308-0d34-0410-b5e6-96231b3b80d8

A silly stupid test of the loop depth calculator was added.  REMOVE in the
future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72 91177308-0d34-0410-b5e6-96231b3b80d8

IntervalPartition: recode to use IntervalIterator to do all the work

LoopDepth.cpp: new file that calculates the depth of a loop, using
IntervalPartitions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71 91177308-0d34-0410-b5e6-96231b3b80d8

Add a helper function bind_obj

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70 91177308-0d34-0410-b5e6-96231b3b80d8

Big changes.  Interval*.h is now more or less finalized.  IntervalPartition
is recoded to use IntervalIterators.  IntervalIterators can now maintain
their own memory or let an external entity do it.

Loop depth is a new user of IntervalPartition for calculating the loop
nesting depth of a basic block

TODO: add IntervalPartition capability to split intervals between the looping
portion and the "tail" portion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69 91177308-0d34-0410-b5e6-96231b3b80d8

CFG.h: change the iterator tag
Method.h: Add an iterator type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68 91177308-0d34-0410-b5e6-96231b3b80d8

ValueHolder's aren't interseting to me anymore

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67 91177308-0d34-0410-b5e6-96231b3b80d8

New file due to the Intervals.h splitup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66 91177308-0d34-0410-b5e6-96231b3b80d8

New files due to the Intervals.h splitup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65 91177308-0d34-0410-b5e6-96231b3b80d8

Add a useless phi for testing with InductionVariables stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64 91177308-0d34-0410-b5e6-96231b3b80d8

#include a different header due to Intervals.h splitting up

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63 91177308-0d34-0410-b5e6-96231b3b80d8

IntervalPartition & IntervalIterator classes have been split out into
their own .h files & .cpp file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62 91177308-0d34-0410-b5e6-96231b3b80d8

IntervalPartition & IntervalIterator classes have been split out into
their own .h files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61 91177308-0d34-0410-b5e6-96231b3b80d8

Prepare for split between Interval, IntervalIterator, and IntervalIPartition

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60 91177308-0d34-0410-b5e6-96231b3b80d8

Addition of IntervalIterator.  Preparing for rename of Intervals.h to
Interval.h, IntervalPartition.h, and IntervalIterator.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59 91177308-0d34-0410-b5e6-96231b3b80d8

Added notes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58 91177308-0d34-0410-b5e6-96231b3b80d8

Implement a lot more functionality.  Now loop invariant and linear
induction variables are correctly identified.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57 91177308-0d34-0410-b5e6-96231b3b80d8

Interval::HeaderNode is now accessed thorugh an accessor function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments
Interval::HeaderNode is now accessed thorugh an accessor function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55 91177308-0d34-0410-b5e6-96231b3b80d8

Add accessor methods to binary/unary operators
Add extra helper methods to PHI class

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54 91177308-0d34-0410-b5e6-96231b3b80d8

Add a space to the PHI node output code to make it look nicer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53 91177308-0d34-0410-b5e6-96231b3b80d8

Moved printing code to the Assembly/Writer library.
Code now detects looping intervals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the new Interval::isLoop method
Implement destructor to free memory

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51 91177308-0d34-0410-b5e6-96231b3b80d8

New header file defined with neeto utilities put in one place

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50 91177308-0d34-0410-b5e6-96231b3b80d8

Modified to use the new reduce_apply algorithm

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49 91177308-0d34-0410-b5e6-96231b3b80d8

* Added capability to print out an interval

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48 91177308-0d34-0410-b5e6-96231b3b80d8

* Added comments
* Added prototype for new Interval::isLoop method
* Added destructor to free memory
* Added IntervalPartition::isDegeneratePartition method
* Added IntervalPartition::size() method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47 91177308-0d34-0410-b5e6-96231b3b80d8

Add a test case: an irreducible flow graph.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of a silly printout that isn't needed right now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45 91177308-0d34-0410-b5e6-96231b3b80d8

Add note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44 91177308-0d34-0410-b5e6-96231b3b80d8

New test case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43 91177308-0d34-0410-b5e6-96231b3b80d8

Add capability to print a derived interval graph

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42 91177308-0d34-0410-b5e6-96231b3b80d8

Add capability to build a derived interval graph

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41 91177308-0d34-0410-b5e6-96231b3b80d8