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62 Commits

Author SHA1 Message Date
Vikram S. Adve
1da1d32fc7 Rematerialize nodes from the globals graph into the current graph 
after all callees are inlined into the current graph.

NOTE: There's also a major bug fix for the BU pass in DataStructure.cpp,
which ensures that resolvable indirect calls are not moved out to the
globals graph, so that they are eventually inlined (if possible).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7189 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-16 21:42:03 +00:00
Chris Lattner
6c87461fe6 Fix how we are handling unreachable functions. This DRAMATICALLY improves efficiency 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7082 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-02 23:42:48 +00:00
Chris Lattner
d391d70361 Keep track of how many inlinings are performed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7076 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-02 20:24:42 +00:00
Chris Lattner
744f93996e Make the BU closure keep track of which actual calls happen 
Minor cleanups


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7059 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-02 04:37:48 +00:00
Chris Lattner
5d5b6d6a5c Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7027 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-01 16:04:18 +00:00
Chris Lattner
2b4c8dfdd5 Split CallSiteIterator out into DSCallSiteIterator.h, and generalize it a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7006 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-30 05:27:53 +00:00
Chris Lattner
0eea61863b Reimplement the BU closure to collapse all SCC graphs into a single graph. 
Look at all of the code that gets deleted!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7001 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-30 05:09:58 +00:00
Chris Lattner
5a54063303 Revamp DSGraphs so that they can support multiple functions in the same 
DSGraph at one time


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6994 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-30 03:15:25 +00:00
Chris Lattner
312edd330f Propagate globals graph from the local to bu to td globals graphs. This 
fixes bug: DSGraph/buglobals.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6947 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-28 22:14:55 +00:00
Chris Lattner
bd92b73be7 * Changes to make NodeType be private to DSNode. 
* Add new MultiObject flag to DSNode which keeps track of whether or not
  multiple objects have been merged into the node, allowing must-alias info
  to be tracked.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6794 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-19 21:15:11 +00:00
Chris Lattner
923fc05b3a Implement optimization for direct function call case. This dramatically 
reduces the number of function nodes created and speeds up analysis by
about 10% overall.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5495 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-05 21:59:58 +00:00
Chris Lattner
20167e3c6d Add better debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5476 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-03 19:11:38 +00:00
Chris Lattner
41c04f730b Change DSGraph stuff to use hash_(set|map) instead of std::(set|map) 
This change provides a small (3%) but consistent speedup


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5460 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-01 04:52:08 +00:00
Chris Lattner
b3416bc9cc Remove using declarations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5456 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-01 04:01:21 +00:00
Chris Lattner
11d71edd0d Add functions to the ban list 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5450 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-01-31 23:57:10 +00:00
Chris Lattner
394471f197 * Eliminate boolean arguments in favor of using enums 
* T-D pass now eliminates unreachable globals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5419 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-01-23 22:05:33 +00:00
Vikram S. Adve
61ff02982f Fix logical error in TD pass: we should clear Mod/Ref bits of each caller 
before inlining their graphs into a function.  To support this,
added flags to CloneFlags to strip/keep Mod/Ref bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4836 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-11-27 17:41:13 +00:00
Chris Lattner
ae5f603665 Add MaxSCC statistics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4722 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-11-17 22:16:28 +00:00
Chris Lattner
5f1f2c6162 Inline graphs from outside the SCC into the SCC before SCC resolution starts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4701 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-11-12 15:58:08 +00:00
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