Commit Graph

93 Commits

Author SHA1 Message Date
Chris Lattner
a9c9c0216e Complete rewrite of BU code to use Tarjan's SCC finding algorithm to drive
the algorithm instead of hand coded depth first iteration


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4694 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-11 21:35:13 +00:00
Chris Lattner
8a5db46967 Fix infinite loop in the BU algorithm. Unfortunately this dies a serious
death when handling moderately sized SCC's, but what can you do


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4689 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-11 00:01:34 +00:00
Chris Lattner
a1079051d8 * Bottom-Up graphs print the Aux call vector
* Significantly improve DEBUG output
* Aggressively fold calls together if we inlined a graph that provides
  call nodes.
* Add a bailout if the current graph has over 200 call nodes in it, this is
  a really whacky case that should never happen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4675 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-10 06:52:47 +00:00
Chris Lattner
f40f0a39bd eliminate the ability to remove global nodes from deadNodeElminate... for now.
This slows stuff down a bit, but it should get much better before it gets any
worse.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4666 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-09 22:07:02 +00:00
Chris Lattner
aa0b468f6d Add globals graphs to all three passes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4663 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-09 21:12:07 +00:00
Chris Lattner
65f2897f2c Clean up DSGraph::removeDeadNodes interface
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4660 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-09 21:00:49 +00:00
Chris Lattner
96517253a1 Make removeTriviallyDeadNodes a private interface of DSGraph
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4659 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-09 20:55:24 +00:00
Chris Lattner
70925b0569 ONLY merge in the aux call sites, this causes a HUGE speedup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4640 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-08 22:27:25 +00:00
Chris Lattner
1a948a8269 Remove gunk used by broken TD pass
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4632 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-08 21:25:24 +00:00
Chris Lattner
460ea29b45 Instead of using a bool that constant has to be explained, use a self
explanitory enum instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4600 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-07 07:06:20 +00:00
Chris Lattner
076c1f923b Implement a new mergeInGraph method, which basically factors code out of
the BU class.

This will be used by the IPModRef class to do stuff, eventually perhaps the
TD pass will use it also.

Speaking of the TD pass, this also eliminates the self recursive case, which
was broken, and couldn't occur anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4599 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-07 06:31:54 +00:00
Chris Lattner
b10604341f Rename DataStructureAnalysis namespace to DS
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4596 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-07 05:20:53 +00:00
Chris Lattner
ef5af99195 Delete "StripScalars" argument to cloneInto method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4560 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-06 06:16:30 +00:00
Chris Lattner
048912bad9 Give a better error message in an unhandled case
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4521 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-04 02:29:15 +00:00
Chris Lattner
c875f023d4 Rename ValueMap to ScalarMap
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4516 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-03 21:27:48 +00:00
Chris Lattner
7a0b5bb7ab Oops, this was not meant to be checked in
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4489 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-02 00:26:32 +00:00
Chris Lattner
92673296e6 Stop representing scalars as explicit nodes in the graph. Now the only
nodes in the graph are memory objects, which is very nice.  This also greatly
reduces the size and memory footprint for DSGraphs.  For example, the local
DSGraph for llu went from 65 to 13 nodes with this change.  As a side bonus,
dot seems to lay out the graphs slightly better too.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4488 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-02 00:13:20 +00:00
Chris Lattner
7f124e3abd Add a fixme
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4479 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-31 23:24:00 +00:00
Chris Lattner
9faf18d523 The callee is not correct, and confuses the TD pass. Null it out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4259 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-22 15:58:46 +00:00
Chris Lattner
e4ae3041f9 Delete unused arguments to DSGraph::cloneInto method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4253 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-21 19:50:29 +00:00
Chris Lattner
198be22cec - Add "ResolvingCaller" to the CallSite record. This keeps track of which
function was finally able to resolve the function call.  Adding this allows
    the TD pass to actually work right!
  - Temporarily disable dead node pruning.  This will be reenabled soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4252 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-21 19:47:18 +00:00
Chris Lattner
0969c50cb8 - Make DSCallSite not inherit from std::vector. Renamed methods slightly.
Make copy ctor have two versions to avoid dealing with conditional template
    argument.  DSCallSite ctor now takes all arguments instead of taking one
    and being populated later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4240 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-21 02:08:03 +00:00
Chris Lattner
7836d609fa Split some long lines
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4237 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-20 22:11:17 +00:00
Vikram S. Adve
26b98265b7 Remove spurious caller pointer in DSCallSite.
Also add functions to access pointer argument nodes cleanly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4235 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-20 21:41:02 +00:00
Chris Lattner
bd14460289 Avoid extra callSite copy
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4232 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-20 20:32:13 +00:00
Vikram S. Adve
42fd169310 Added a first-class representation for each call site that can be
used in the DS graphs.  Essentially, what was vector<DSNodeHandle>
before is now a DSCallSite with the same vector, plus pointers to the
CallInst and the caller Function.  The special-purpose class
BUDataStructure::CallSite is no longer needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4228 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-20 18:07:37 +00:00
Chris Lattner
cf15db34d3 * Make the DSGraph cloner automatically merge global nodes
* BUClosure doesn't have to worry about global nodes
 * TDClosure now works with global nodes
 * Reenable DNE on TD pass, now that globals work right


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4220 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-17 20:09:52 +00:00
Chris Lattner
3cc061c0e9 Remove obsolete code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4218 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-17 04:58:10 +00:00
Chris Lattner
613692c106 * Add data structures and code to track the call sites for each function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4213 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-17 04:24:08 +00:00
Chris Lattner
a00397e1ee Prune function nodes that are no longer referenced due to inlining
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4036 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-03 21:55:28 +00:00
Chris Lattner
55c1058135 Reimplement/port the Bottom Up Closure pass
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4031 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-03 20:38:41 +00:00
Chris Lattner
fccd06fcea Checkin some major reworks of data structure analysis. This is not done,
nor does it work very well, but I need to get it checked in before I break
the tree unintentionally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3996 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-01 22:33:50 +00:00
Chris Lattner
044f908791 - Do not expose ::ID from any of the analyses anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3416 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-21 17:09:45 +00:00
Chris Lattner
221c97974c Minor changes to DEBUG()'s
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3261 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-07 21:41:11 +00:00
Chris Lattner
7541b89092 Changes to be GCC3.1 friendly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3186 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-31 19:32:12 +00:00
Vikram S. Adve
355e2ca1f4 Use a separate globals graph to hold externally visible nodes.
This changes both the bottom-up and top-down propagation so that
globals and other external objects do not have to appear in every
function, but only in functions in which they are referenced or
they can be used to access something else that is referenced.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3170 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-30 22:05:22 +00:00
Chris Lattner
97f51a3024 * Standardize how analysis results/passes as printed with the print() virtual
methods
* Eliminate AnalysisID:  Now it is just a typedef for const PassInfo*
* Simplify how AnalysisID's are initialized
* Eliminate Analysis/Writer.cpp/.h: incorporate printing functionality into
  the analyses themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3115 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-27 01:12:15 +00:00
Chris Lattner
1e43516dcf * Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Remove getPassName implementations from various subclasses


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3112 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-26 21:12:44 +00:00
Chris Lattner
1868227886 Changes for GCC 3.1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3068 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-24 22:33:50 +00:00
Chris Lattner
9eee58d0ba Ignore some common varargs functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2973 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-19 18:11:43 +00:00
Vikram S. Adve
c44e9bfa5c Add support for a top-down propagation pass:
-- Save a copy of the original call nodes in DSGraph before inlining bottom-up.
-- Also, save a list of the callers of each function in DSGraph.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2966 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-18 16:13:52 +00:00
Chris Lattner
d124c38993 The graph is more accurate when I don't completely ignore the return value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2952 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-18 01:58:24 +00:00
Chris Lattner
0d9bab8bac Lots of bug fixes, add BottomUpClosure, which has bugs, but is a start.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2945 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-18 00:12:30 +00:00