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Commit Graph

627 Commits

Author SHA1 Message Date
Chris Lattner
e2ee216e1f Remove another unneeded call.
llvm-svn: 11177
2004-02-08 01:40:40 +00:00
Chris Lattner
85ba7bbf78 This call is no longer needed now that merging does not produce garbage
llvm-svn: 11176
2004-02-08 01:38:34 +00:00
Chris Lattner
32a3eb0b88 Substantially improve the DSA code by removing 'forwarding' nodes from
DSGraphs while they are forwarding.  When the last reference to the forwarding
node is dropped, the forwarding node is autodeleted.  This should simplify
removeTriviallyDead nodes, and is only (efficiently) possible because we are
using an ilist of dsnodes now.

llvm-svn: 11175
2004-02-08 01:27:18 +00:00
Chris Lattner
84ff796305 Bugfix for ilist conversion. The ilist wants to make an 'end' node which has
G == 0

llvm-svn: 11174
2004-02-08 01:05:37 +00:00
Chris Lattner
29067016a4 Switch the Nodes list from being an std::vector<DSNode*> to an ilist<DSNode>
llvm-svn: 11173
2004-02-08 00:53:26 +00:00
Chris Lattner
2c836fc933 Change to use node_iterators instead of direct access to Nodes
llvm-svn: 11171
2004-02-08 00:23:16 +00:00
Chris Lattner
6af67c7eb4 getNodes() is gone, use node_begin/end instead
Rename stats from dsnode -> dsa
Add a new stat

llvm-svn: 11167
2004-02-07 23:58:05 +00:00
Chris Lattner
ce838bfae6 There is no need to clone over nodes that are going to be dead anyway
llvm-svn: 11157
2004-02-07 22:00:03 +00:00
Chris Lattner
89f03df701 Avoid referencing deleted DSgraphs when merging an SCC into a larger SCC. This
fixes the crash in 176.gcc.

llvm-svn: 11033
2004-01-31 21:02:18 +00:00
Chris Lattner
0127841d4e Forward method request to chained aa implementation
llvm-svn: 11024
2004-01-30 22:20:55 +00:00
Chris Lattner
dfa4f14e34 Fix a bug aflicting 265.gap
llvm-svn: 11006
2004-01-29 08:36:22 +00:00
Chris Lattner
caecd769c4 Minor bugfixes
llvm-svn: 11005
2004-01-29 03:32:15 +00:00
Chris Lattner
7ab2349541 Rename DSGraph::ScalarMapTy -> DSScalarMap
llvm-svn: 11001
2004-01-28 09:15:42 +00:00
Chris Lattner
9a79b1690c Fix a bug
llvm-svn: 11000
2004-01-28 03:31:34 +00:00
Chris Lattner
8324e48b84 Eliminate the call to removeTriviallyDeadNodes from updateFromGlobals graph,
moving it to the start of removeDeadNodes.  This speeds up DSA by 2s on perlbmk
from 41s

llvm-svn: 10999
2004-01-28 03:24:41 +00:00
Chris Lattner
92eb91ed70 In the TD pass, iterate over globals directly instead of through the whole scalar
map.  This saves 5s in the TD pass, from 22->17s on perlbmk

llvm-svn: 10998
2004-01-28 03:12:48 +00:00
Chris Lattner
c25a7dad97 In the TD pass, don't iterate over the scalar map to find the globals, iterate over
the globals directly.  This doesn't save any substantial time, however, because the
globals graph only contains globals!

llvm-svn: 10997
2004-01-28 03:07:30 +00:00
Chris Lattner
394c9343b4 In updateFromGlobalsGraph, instead of iterating over all of the scalars in the
function to find the globals, iterate over all of the globals directly.  This
speeds the function up from 14s to 6.3s on perlbmk, reducing DSA time from
53->46s.

llvm-svn: 10996
2004-01-28 03:03:06 +00:00
Chris Lattner
528f5842dd Minor tweaks, eliminate useless integer pruning optimziation, turn on
timers by default

llvm-svn: 10993
2004-01-28 02:41:32 +00:00
Chris Lattner
18e0615a69 Further reduce the number of nodes cloned with getClonedNH, using merge instead.
This reduces the number of nodes allocated, then immediately merged and DNE'd
from 2193852 to 1298049.  unfortunately this only speeds DSA up by ~1.5s (of
53s), because it's spending most of its time waddling through the scalar map :(

llvm-svn: 10992
2004-01-28 02:11:49 +00:00
Chris Lattner
6d38674f7b Add a timer, fix a minor bug.
Also, use RC::merge when possible, reducing the number of nodes allocated, then immediately merged away from 2985444 to 2193852 on perlbmk.

llvm-svn: 10991
2004-01-28 02:05:05 +00:00
Chris Lattner
10881df6e2 Another bugfix, disable "spurious" output.
You gotta love spurious

llvm-svn: 10990
2004-01-28 01:19:52 +00:00
Chris Lattner
b0d7b564dd fix bug in previous checkin
llvm-svn: 10989
2004-01-27 22:54:56 +00:00
Chris Lattner
3bd20c5114 * Add a new commandline argument to control the "global roots hack". Default
it to be off.  If it looks like it's completely unnecessary after testing, I
  will remove it completely (which is the hope).
* Callers of the DSNode "copy ctor" can not choose to not copy links.
* Make node collapsing not create a garbage node in some cases, avoiding a
  memory allocation, and a subsequent DNE.
* When merging types, allow two functions of different types to be merged
  without collapsing.
* Use DSNodeHandle::isNull more often instead of DSNodeHandle::getNode() == 0,
  as it is much more efficient.
*** Implement the new, more efficient reachability cloner class
    In addition to only cloning nodes that are reachable from interesting
    roots, this also fixes the huge inefficiency we had where we cloned lots
    of nodes, only to merge them away immediately after they were cloned.
    Now we only actually allocate a node if there isn't one to merge it into.
* Eliminate the now-obsolete cloneReachable* and clonePartiallyInto methods
* Rewrite updateFromGlobalsGraph to use the reachability cloner
* Rewrite mergeInGraph to use the reachability cloner
* Disable the scalar map scanning code in removeTriviallyDeadNodes.  In large
  SCC's, this is extremely expensive.  We need a better data structure for the
  scalar map, because we really want to scan the unique node handles, not ALL
  of the scalars.
* Remove the incorrect SANER_CODE_FOR_CHECKING_IF_ALL_REFERRERS_ARE_FROM_SCALARMAP code.
* Move the code for eliminating integer nodes from the trivially dead
  eliminator to the dead node eliminator.
* removeDeadNodes no longer uses removeTriviallyDeadNodes, as it contains a
  superset of the node removal power.
* Only futz around with the globals graph in removeDeadNodes if it is modified

llvm-svn: 10987
2004-01-27 22:03:40 +00:00
Chris Lattner
727e11ac33 Rewrite to use the reachability cloner interface. Also, make this much more
efficient in the case where a function calls into the same graph multiple times
(ie, it either contains multiple calls to the same function, or multiple calls
to functions in the same SCC graph)

llvm-svn: 10986
2004-01-27 21:53:14 +00:00
Chris Lattner
25f95d2b7c minor cleanups
llvm-svn: 10985
2004-01-27 21:51:19 +00:00
Chris Lattner
9117f221b1 Get clone flags right, so we don't build InlinedGlobals only to clear them
llvm-svn: 10984
2004-01-27 21:50:41 +00:00
Chris Lattner
6d2f67adb3 Initial support for implementing clonePartiallyInto in terms of cloneReachableSubgraph, though this support is currently disabled.
llvm-svn: 10970
2004-01-23 01:44:53 +00:00
Chris Lattner
a72f3a387a Eliminated the CompletedNodes argument to the cloneReachable* methods. This
map was only used to implement a marginal GlobalsGraph optimization, and it
actually slows the analysis down (due to the overhead of keeping it), so just
eliminate it entirely.

llvm-svn: 10955
2004-01-22 16:56:13 +00:00
Chris Lattner
50e765d1a2 Ok, I'm tired of pulling out all my timers to check stuff in, just do it.
llvm-svn: 10954
2004-01-22 16:36:28 +00:00
Chris Lattner
da04e4d383 Bug fix: X.mergeWith(Y) was not updating Y if Y was a null node handle!
llvm-svn: 10953
2004-01-22 16:31:08 +00:00
Chris Lattner
07d45564d0 Start implementing DSGraph::clonePartiallyInto and implement mergeInGraph
in terms of it.

Though clonePartiallyInto is not cloning partial graphs yet, this change
dramatically speeds up inlining of graphs with many scalars.  For example,
this change speeds up the BU pass on 253.perlbmk from 69s to 36s, because
it avoids iteration over the scalar map, which can get pretty large.

llvm-svn: 10951
2004-01-22 15:30:58 +00:00
Chris Lattner
961cc51cf1 Allow disabling of ALL printing overhead when performing timings
llvm-svn: 10948
2004-01-22 13:42:43 +00:00
Chris Lattner
e8a612e92d Do not depend on index type to determine whether it is a structure or sequential index
llvm-svn: 10221
2003-11-25 20:19:55 +00:00
Chris Lattner
7485243e7a Implement a small optimization to handling of GEP's that are equivalent to casts.
This results in substantially reduced collapsing for some testcases

llvm-svn: 10002
2003-11-14 17:09:46 +00:00
Chris Lattner
ca8f3561c2 Trying to get the dsgraph for an external function is bad for DSA's health
llvm-svn: 9979
2003-11-13 18:48:11 +00:00
Chris Lattner
88bf4d25a0 Implement the CompleteBU pass
llvm-svn: 9964
2003-11-13 05:05:41 +00:00
Chris Lattner
547205d4bc Minor code cleanup
llvm-svn: 9962
2003-11-13 05:04:19 +00:00
Chris Lattner
8508dec429 Disable integer tracking by default
llvm-svn: 9960
2003-11-13 03:10:49 +00:00
Chris Lattner
55ad096ff8 Add an initial version of the CompleteBUDataStructures class, which is currently
identical to the BU pass, but has an accurate call graph

llvm-svn: 9956
2003-11-13 01:43:00 +00:00
Chris Lattner
b60823472a Fine-grainify namespaces for this library
llvm-svn: 9948
2003-11-12 23:11:14 +00:00
Chris Lattner
95d0b541c1 Add new argument to disable checking
llvm-svn: 9922
2003-11-12 17:58:22 +00:00
Chris Lattner
e73452b42d Print return nodes for graphs with multiple functions in them correctly
llvm-svn: 9914
2003-11-12 04:58:19 +00:00
Chris Lattner
87ad20251a Don't crash if no gg
llvm-svn: 9913
2003-11-12 04:57:58 +00:00
Brian Gaeke
d25f86d683 Put all LLVM code into the llvm namespace, as per bug 109.
llvm-svn: 9903
2003-11-11 22:41:34 +00:00
Chris Lattner
6deb20046e Compute node offsets correctly
llvm-svn: 9895
2003-11-11 20:12:32 +00:00
Chris Lattner
365bda897c Add new method for computing node mappings. This is used by the pool allocator
llvm-svn: 9880
2003-11-11 05:08:59 +00:00
Chris Lattner
e63e580e56 Add support for memmove
llvm-svn: 9824
2003-11-09 03:32:52 +00:00
Chris Lattner
eb36733092 Handle bzero and memset in the local analysis, because we were missing the fact
that memset returns its argument!!

llvm-svn: 9811
2003-11-08 21:55:50 +00:00
Chris Lattner
28d77c2122 This doesn't use DSCallSiteIterator
llvm-svn: 9809
2003-11-08 21:17:37 +00:00
Chris Lattner
a71b07eeca All DSGraphs keep a reference to the targetdata they are created with. This is
used to eliminate the hard coded, hacked in, sparc specific, global TargetData.
Changing the TargetData used to actually match the code fixes problems, and
eliminates a crash.

llvm-svn: 9659
2003-11-02 22:27:28 +00:00
Chris Lattner
63fb5bcaac Fix bug: test/Regression/Analysis/DSGraph/2003-11-02-NodeCollapsing.ll
llvm-svn: 9658
2003-11-02 21:02:20 +00:00
John Criswell
de34542f41 Added LLVM copyright header.
llvm-svn: 9321
2003-10-21 15:17:13 +00:00
John Criswell
71d2894956 Added LLVM copyright notice to Makefiles.
llvm-svn: 9312
2003-10-20 22:26:57 +00:00
John Criswell
b402729b30 Added LLVM project notice to the top of every C++ source file.
Header files will be on the way.

llvm-svn: 9298
2003-10-20 19:43:21 +00:00
Alkis Evlogimenos
e6fdc87045 Use std::string::size_type for for ColonPos to stop gcc from giving a warning
llvm-svn: 8811
2003-10-01 22:49:22 +00:00
Chris Lattner
471405e2ba DOn't crash if program calls the null pointer
llvm-svn: 8708
2003-09-24 23:42:58 +00:00
Chris Lattner
883cc51630 Functions reachable from the arguments of unresolvable call nodes should
not have their arguments marked complete

llvm-svn: 8639
2003-09-20 23:58:33 +00:00
Chris Lattner
681a690f26 The Globals graph must become complete at the end of the BU phase!
llvm-svn: 8638
2003-09-20 23:27:05 +00:00
Chris Lattner
a85a2f8d86 Do not mark incoming arguments to functions complete if the function is pointed to by a global in the globals graph
llvm-svn: 8637
2003-09-20 22:24:04 +00:00
Chris Lattner
c2e75f110a Make sure to add global variable initializers to the Globals graph!
llvm-svn: 8636
2003-09-20 21:48:16 +00:00
Chris Lattner
a721b89e37 Don't consider incomplete nodes to be typesafe!
llvm-svn: 8635
2003-09-20 21:48:01 +00:00
Chris Lattner
f203e908e3 Remove trivially dead nodes was not removing nodes that were dead due to forwarding!
llvm-svn: 8634
2003-09-20 21:34:07 +00:00
Chris Lattner
372fe6873d Add special case handling for calloc and realloc
llvm-svn: 8630
2003-09-20 16:50:46 +00:00
Chris Lattner
b12a8a6177 Switch from using CallInst's to represent call sites to using the LLVM
CallSite class.  Now we can represent function calls by invoke instructions
too!

llvm-svn: 8629
2003-09-20 16:34:13 +00:00
Chris Lattner
6a460d88d3 Make this work better for constants that aren't necessarily in ANY graph, such as null pointers
llvm-svn: 8628
2003-09-20 16:12:57 +00:00
Chris Lattner
448df1c145 Keep track of the number of typed/untyped memory accesses theyre are in the program
VS: ----------------------------------------------------------------------

llvm-svn: 8611
2003-09-20 01:20:46 +00:00
Misha Brukman
b9a4ddbfc5 Fixed spelling and grammar.
llvm-svn: 8478
2003-09-11 18:14:24 +00:00
Chris Lattner
e2ee62c91c Add more verbose comment
llvm-svn: 7610
2003-08-05 18:38:37 +00:00
Sumant Kowshik
1a4fce3511 Added function mergeInGlobalsGraph which merges in the entire globals graph with the graph of a function
llvm-svn: 7606
2003-08-05 17:04:41 +00:00
Chris Lattner
686e94e760 DEBUG got moved to Support/Debug.h
llvm-svn: 7492
2003-08-01 22:15:03 +00:00
Chris Lattner
36a7bf78fa Fix another minor bug
llvm-svn: 7340
2003-07-26 23:00:05 +00:00
Chris Lattner
752a4ca4c4 Dont' try to parse the colon
llvm-svn: 7323
2003-07-25 20:49:29 +00:00
Chris Lattner
915b998b3f Add a more general check-flags which can be used to ensure arbitrary flags are set
llvm-svn: 7322
2003-07-25 20:45:40 +00:00
Vikram S. Adve
420ec0bb0f Fix comment.
llvm-svn: 7227
2003-07-22 12:08:58 +00:00
Brian Gaeke
026c333f07 Fix typo in call to isUnresolvableFunc, which was breaking the build.
llvm-svn: 7194
2003-07-17 19:07:46 +00:00
Vikram S. Adve
96abba3e01 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).

llvm-svn: 7189
2003-07-16 21:42:03 +00:00
Vikram S. Adve
e2993f34ed (1) Rematerialize nodes from the globals graph into the current graph
after all callers are inlined into the current graph.
(2) Optimize the way a graph is inlined into its callees in the TD phase:
    (a) Use DSGraph::cloneReachableSubgraph to clone only a subgraph at
        each call site, for faster inlining.
    (b) Clone separately for the same callee at different call sites,
        since only the reachable subgraph is being cloned, not the entire
        caller graph.

llvm-svn: 7188
2003-07-16 21:40:28 +00:00
Vikram S. Adve
d1a85b7860 Implement 2 important changes: (1) rematerialization from the globals graph,
and (2) faster inlining by cloning only reachable nodes.  In particular:
(1) Added DSGraph::cloneReachableSubgraph and DSGraph::cloneReachableNodes
    to clone the subgraph reachable from a set of root nodes, into the
    current graph, merging the global nodes into thos in the current graph.
    The TD pass now uses this for faster inlining, and so does the
    next function.
(2) Added DSGraph::updateFromGlobalGraph() to rematerialize nodes from the
    globals graph into the current graph in both BU and TD passes.
(3) `I' flags are removed from all nodes in the globals graph, because they
    are difficult to maintain correctly and are not needed anyway.
(4) Aux. function calls are only removed to the globals graph if they
    will never be resovled.  (This is what fixed gap.)  The immediate
    reason is that if we took these out of a function (and moved them to
    the globals graph) we would need to rematerialize these nodes into the
    function graph for every function in the BU pass.  The longer term
    problem is that we would need to find a way to remove them from the
    globals graph iff they have been resolved on all paths through the
    call graph.

llvm-svn: 7187
2003-07-16 21:36:31 +00:00
Vikram S. Adve
0ce80bfa82 Factor out the test for unresolvable external functions into
isUnresolvableFunc() (I thought I needed this externally.
I don't, but it's still nicer this way.)

llvm-svn: 7186
2003-07-16 21:25:17 +00:00
Chris Lattner
2a6504c799 Remove globals more aggressively from graphs.
Fix a bug where we removed nodes that were marked U.

llvm-svn: 7090
2003-07-03 02:03:53 +00:00
Chris Lattner
492b7eeb06 INCLUDE_PARENT_GRAPH is required!
llvm-svn: 7088
2003-07-02 23:57:05 +00:00
Chris Lattner
86c8f822ec Disable incorrect mustalias code
llvm-svn: 7087
2003-07-02 23:56:51 +00:00
Chris Lattner
478e42b621 Remove space at end of line
llvm-svn: 7084
2003-07-02 23:44:15 +00:00
Chris Lattner
b64aff94fd Fix how we are handling unreachable functions. This DRAMATICALLY improves efficiency
llvm-svn: 7082
2003-07-02 23:42:48 +00:00
Chris Lattner
083398eff5 Keep track of how many inlinings are performed
llvm-svn: 7076
2003-07-02 20:24:42 +00:00
Chris Lattner
59bb44723a Try using trivially dead deletion
llvm-svn: 7075
2003-07-02 19:49:11 +00:00
Chris Lattner
c1f922d61e Remove dead Nodes list
llvm-svn: 7065
2003-07-02 06:06:34 +00:00
Chris Lattner
56585a82d9 Complete rewrite of td pass
llvm-svn: 7064
2003-07-02 04:39:44 +00:00
Chris Lattner
a85502303e Print collapsed to match the paper
llvm-svn: 7063
2003-07-02 04:39:27 +00:00
Chris Lattner
95c5313776 Reduce amount of work we do calculating mustaliases if the arg is a global
llvm-svn: 7062
2003-07-02 04:39:13 +00:00
Chris Lattner
f4a221c87c Add support for ParentGraph only when building in debug mode
Minor cleanups, reenable folding of call nodes to external functions

llvm-svn: 7061
2003-07-02 04:38:49 +00:00
Chris Lattner
d49611837b Add some functions to the blacklist
llvm-svn: 7060
2003-07-02 04:38:00 +00:00
Chris Lattner
64ea02737e Make the BU closure keep track of which actual calls happen
Minor cleanups

llvm-svn: 7059
2003-07-02 04:37:48 +00:00
Chris Lattner
60652f41c4 Make local pass print out its progress
llvm-svn: 7058
2003-07-02 04:37:26 +00:00
Chris Lattner
5ddec0f02d Rework TD pass to work with the precise call graph constructed by the BU phase
llvm-svn: 7031
2003-07-01 16:28:11 +00:00
Chris Lattner
3536455262 Do not treat global variables as functions! (and assert failing)
llvm-svn: 7030
2003-07-01 16:27:53 +00:00
Chris Lattner
7ab30a179b Dont' print scalar nodes for ConstantPointerRefs
llvm-svn: 7029
2003-07-01 16:27:32 +00:00
Chris Lattner
599287e3c3 Minor cleanups
llvm-svn: 7027
2003-07-01 16:04:18 +00:00
Chris Lattner
33fce4d868 Use the getFunctionNames method
llvm-svn: 7008
2003-06-30 05:57:39 +00:00
Chris Lattner
cb32be085b Add new method
llvm-svn: 7007
2003-06-30 05:57:30 +00:00
Chris Lattner
851b6382b6 Split CallSiteIterator out into DSCallSiteIterator.h, and generalize it a bit
llvm-svn: 7006
2003-06-30 05:27:53 +00:00
Chris Lattner
e40d871120 Be more const-correct
llvm-svn: 7005
2003-06-30 05:27:18 +00:00
Chris Lattner
fb9f50ee23 Fix bug in last checkin
llvm-svn: 7003
2003-06-30 05:18:26 +00:00
Chris Lattner
9954cfc9bf Reimplement the BU closure to collapse all SCC graphs into a single graph.
Look at all of the code that gets deleted!

llvm-svn: 7001
2003-06-30 05:09:58 +00:00
Chris Lattner
60b2516889 Handle the case where OldNodeMap == &ScalarMap correctly
llvm-svn: 7000
2003-06-30 05:09:29 +00:00
Chris Lattner
20d3019fa6 Remove dead method
llvm-svn: 6999
2003-06-30 04:53:39 +00:00
Chris Lattner
37d7a580b2 Do not delete the same graph multiple times when freeing memory if graphs are sharing
llvm-svn: 6998
2003-06-30 04:53:27 +00:00
Chris Lattner
64008895c8 Do not multiply delete graphs if functions are sharing graphs
llvm-svn: 6997
2003-06-30 04:53:08 +00:00
Chris Lattner
8574358e8a Move usages of explicit hash_* datastructures to use typedefs
llvm-svn: 6996
2003-06-30 03:36:09 +00:00
Chris Lattner
203826c2e1 Revamp DSGraphs so that they can support multiple functions in the same
DSGraph at one time

llvm-svn: 6994
2003-06-30 03:15:25 +00:00
Chris Lattner
762a057a22 Abstract out the predicate which decides whether a function gets complete
arguments or not...

llvm-svn: 6987
2003-06-29 22:37:07 +00:00
Chris Lattner
9cb6f34b81 Fix minor bug in previous checkin
llvm-svn: 6986
2003-06-29 22:36:31 +00:00
Chris Lattner
9229da84be Add support for ensuring that nodes are not incomplete
llvm-svn: 6985
2003-06-29 22:36:15 +00:00
Chris Lattner
94b29bf96d Add support for "physical subtyping", which fixes:
DSGraph/2003-06-29-NodeCollapsing2.ll & DSGraph/PhysicalSubtyping.ll

llvm-svn: 6982
2003-06-29 20:27:45 +00:00
Chris Lattner
ed9302c854 Add print method to not get silly warning from analyze
llvm-svn: 6981
2003-06-29 20:27:16 +00:00
Chris Lattner
55099822d5 New pass which is useful for writing regression tests
llvm-svn: 6979
2003-06-29 18:17:07 +00:00
Chris Lattner
b932c794ee Expose must alias information for global variables, implementing: DSGraph/mustalias.ll
llvm-svn: 6973
2003-06-29 00:54:08 +00:00
Chris Lattner
1352a50cbb Propagate globals graph from the local to bu to td globals graphs. This
fixes bug: DSGraph/buglobals.ll

llvm-svn: 6947
2003-06-28 22:14:55 +00:00
Chris Lattner
801e22514d Drop references to globals who do exist in the globals graph, but are never
read or written to.  Keep track of how many times this happens.  This should
be good for deleting things like references to type information in C++ classes

llvm-svn: 6946
2003-06-28 22:10:58 +00:00
Chris Lattner
5f90382628 Avoid double negatives
llvm-svn: 6945
2003-06-28 21:58:28 +00:00
Chris Lattner
cf6df3ef6b New pass to perform DSA based optimizations. Initially we just support turning
globals into constants if we can prove it's safe

llvm-svn: 6941
2003-06-28 21:54:55 +00:00
Chris Lattner
0a0266865a Remove support for the MultiObject flag, which was fundamentally broken
llvm-svn: 6840
2003-06-22 03:03:52 +00:00
Chris Lattner
365e583866 * 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.

llvm-svn: 6794
2003-06-19 21:15:11 +00:00
Chris Lattner
2806ac8828 Nodes get forwarded when they are collapsed currently.
llvm-svn: 6696
2003-06-16 12:08:18 +00:00
Chris Lattner
e718da0d46 Remove bogus assertion: a node with no referrers could be collapsed if field-sensitivity was disabled
llvm-svn: 6695
2003-06-16 12:07:39 +00:00
Misha Brukman
74cf3f5246 s/convertable/convertible/g
llvm-svn: 6248
2003-05-20 18:45:36 +00:00
Chris Lattner
1778154dc7 Don't apply type information to load instructions if it will cause collapsing
llvm-svn: 5684
2003-03-03 17:13:31 +00:00
Chris Lattner
4162adcfee Adjust to implement new AA interface
llvm-svn: 5638
2003-02-26 19:29:36 +00:00
Chris Lattner
148d67f088 Fix resolution of indirect function calls... whoops
llvm-svn: 5576
2003-02-14 23:27:18 +00:00
Chris Lattner
37735c4677 Mark function edges
llvm-svn: 5571
2003-02-14 20:25:47 +00:00
Chris Lattner
00fe161e49 - Eliminate provably non-pointer nodes from graphs.
This helps a lot of testcases, for example:
            New Time  New #Nodes     Old Time    Old #Nodes
254.gap:    91.1024     21605        91.1397     22657
povray31:    2.7807      8613         3.0152     10338
255.vortex:  1.2034      8153         1.2172     8822
moria:        .6756      3150          .7054     3877
300.twolf:    .1652      2010          .1851     3270

Typically, testcases which use long and ulong integers a lot get better, f.e. povray above.

llvm-svn: 5566
2003-02-14 06:28:00 +00:00
Chris Lattner
e5dbced215 Don't put integer pointers (longs) into the scalar map.
This speeds stuff up by 10% on some tests, woot!

llvm-svn: 5564
2003-02-14 04:55:58 +00:00
Chris Lattner
b178c26c20 Hax0r around a deficiency in the Pass infrastructure
llvm-svn: 5555
2003-02-13 21:44:18 +00:00
Chris Lattner
32a8143e30 Use the new tailclip property new added to graphviz CVS to make call nodes
actually intelligable

llvm-svn: 5554
2003-02-13 20:14:40 +00:00
Chris Lattner
120d135f05 Move node forwarding code from being inlined to being out-of-line.
This brings a 11.6% speedup to steens, and a 3.6 overall speedup to ds-aa

llvm-svn: 5552
2003-02-13 19:09:00 +00:00
Chris Lattner
522cb6d282 Implement a "union-findy" version of DS-Analysis, which eliminates the
Referrers list on DSNodes.

llvm-svn: 5536
2003-02-11 23:11:51 +00:00
Chris Lattner
2d27e0d912 Minor tweaks to printing. Close the file before viewing it in viewGraph
llvm-svn: 5535
2003-02-11 19:27:27 +00:00
Chris Lattner
de261140d0 Modest speedup which seems to help steens quite a bit on large graphs
llvm-svn: 5532
2003-02-10 18:47:23 +00:00
Chris Lattner
8d025d56d6 Fix problem breaking GAP, use hasNoReferrers more
llvm-svn: 5530
2003-02-10 18:18:18 +00:00
Chris Lattner
72fbffecd2 Implement a new "viewGraph" method which can be used to instantly view a graph from gdb
llvm-svn: 5528
2003-02-10 18:17:07 +00:00
Chris Lattner
940a5eddb3 Rearrange code
llvm-svn: 5527
2003-02-10 18:16:36 +00:00
Chris Lattner
1ed7b4806b Fix problem breaking Fhourstones
llvm-svn: 5526
2003-02-10 18:16:19 +00:00
Chris Lattner
34a3429b0a Make steensgaards performance not shameful
llvm-svn: 5524
2003-02-10 00:14:57 +00:00
Chris Lattner
f8c57bab25 Don't insert null entries into the scalar map for constexpr (cast null to Ty)
llvm-svn: 5523
2003-02-09 23:04:12 +00:00
Chris Lattner
117a27d291 Switch to using the right call vector
llvm-svn: 5517
2003-02-09 19:26:47 +00:00
Chris Lattner
dcf8d02380 Fix major bugs in incompleteness marking that were pessimizing results
llvm-svn: 5515
2003-02-09 18:42:43 +00:00
Chris Lattner
063bef68c4 Print out the steens graph if -debug is specified
llvm-svn: 5514
2003-02-09 18:42:16 +00:00
Chris Lattner
5da09703fa * Fix a bug where global incompleteness marking would not mark the global
itself incomplete!
* Allow incompleteness callers to specify they don't want globals to be
  considered sources of incompleteness.

llvm-svn: 5513
2003-02-09 18:41:49 +00:00
Chris Lattner
8711f611fa Add a special case for main because we know it's incoming arguments don't alias
llvm-svn: 5511
2003-02-08 23:08:02 +00:00
Chris Lattner
6daed111da Fix a bug where we would mark the callees arguments incomplete if the caller was external.
llvm-svn: 5510
2003-02-08 23:07:39 +00:00
Chris Lattner
a05bfd7525 Remove explicit result counters
llvm-svn: 5508
2003-02-08 23:03:17 +00:00
Chris Lattner
2c7c54ce9d Add a flag which effectively disables field sensitivity
llvm-svn: 5506
2003-02-08 20:18:39 +00:00
Chris Lattner
b056679b1e Don't bother counting alias results, allow the AliasAnalysisCounter to do that.
llvm-svn: 5505
2003-02-07 20:39:48 +00:00
Chris Lattner
21e1033bff Fix an assertion failure
llvm-svn: 5496
2003-02-06 00:15:08 +00:00
Chris Lattner
5f3ef2f0e7 Implement optimization for direct function call case. This dramatically
reduces the number of function nodes created and speeds up analysis by
about 10% overall.

llvm-svn: 5495
2003-02-05 21:59:58 +00:00
Chris Lattner
4aa35d21be Remove bogus assertion
llvm-svn: 5492
2003-02-04 16:33:23 +00:00
Chris Lattner
4e0422745c Fix a huge bug with handling non-pointer instructions
llvm-svn: 5491
2003-02-04 00:59:50 +00:00
Chris Lattner
a4f94897b9 Make the TD pass not include all of the call nodes from the local pass,
eliminating incomplete markers from them

llvm-svn: 5490
2003-02-04 00:59:32 +00:00
Chris Lattner
e8381114ef Add sanity check
llvm-svn: 5489
2003-02-04 00:03:57 +00:00
Chris Lattner
96f37f267a Fix steensgaard to work on a lot more cases...
llvm-svn: 5488
2003-02-04 00:03:37 +00:00
Chris Lattner
2e3829c76d Fix printing of nonfunction graphs
llvm-svn: 5487
2003-02-04 00:03:18 +00:00
Chris Lattner
7b9a9209fc Rename variable
llvm-svn: 5486
2003-02-03 22:51:53 +00:00
Chris Lattner
102e619864 Hack to work around deficiency in pass infrastructure
llvm-svn: 5485
2003-02-03 22:51:28 +00:00
Chris Lattner
2a3c476fd4 Initial implementation of ds-aa
llvm-svn: 5484
2003-02-03 22:50:46 +00:00
Chris Lattner
2ce14e226e * Fix a bug introduced in the last checkin wrt Stack markers
* Make cloning more efficient in the process...

llvm-svn: 5479
2003-02-03 20:08:51 +00:00
Chris Lattner
5d14f5d9ac Implement the globals graph!
llvm-svn: 5477
2003-02-03 19:12:15 +00:00
Chris Lattner
a589169d22 Add better debug output
llvm-svn: 5476
2003-02-03 19:11:38 +00:00
Chris Lattner
e4d8ec335c Be a bit more specific in caption
llvm-svn: 5469
2003-02-02 16:42:01 +00:00
Chris Lattner
acc67b5d1d Fix a bug where we would delete neccesary calls in bu pass
llvm-svn: 5465
2003-02-01 06:54:31 +00:00
Chris Lattner
d946a6a307 Fix a bug where we would incorrectly delete globals which had edges to alive nodes in
a graph in the t-d pass.  This slows down the TD pass by quite a bit (1/3), but is
needed for correctness.

llvm-svn: 5464
2003-02-01 06:51:17 +00:00
Chris Lattner
4f56dfb8d8 Delete nodes more efficiently
llvm-svn: 5463
2003-02-01 06:41:15 +00:00
Chris Lattner
bbd430c392 Remove dead nodes more efficiently
llvm-svn: 5462
2003-02-01 06:23:33 +00:00
Chris Lattner
8bb8f73e76 Improve efficiency of aliveness traversal code
llvm-svn: 5461
2003-02-01 06:17:02 +00:00
Chris Lattner
7aec6c471b Change DSGraph stuff to use hash_(set|map) instead of std::(set|map)
This change provides a small (3%) but consistent speedup

llvm-svn: 5460
2003-02-01 04:52:08 +00:00
Chris Lattner
6051f888b4 Remove using declarations
llvm-svn: 5456
2003-02-01 04:01:21 +00:00
Chris Lattner
c3e8b48d5e Remove globals on the bottom up pass which do not contain any information
llvm-svn: 5451
2003-01-31 23:57:36 +00:00
Chris Lattner
390dc95c05 Add functions to the ban list
llvm-svn: 5450
2003-01-31 23:57:10 +00:00
Chris Lattner
91e3c1eeac Use and implement API for graph traversals
llvm-svn: 5431
2003-01-29 21:10:20 +00:00
Chris Lattner
712b3598b8 free instructions mark their operands as being heap nodes.
llvm-svn: 5425
2003-01-28 20:59:57 +00:00
Chris Lattner
f1afc156f8 * Eliminate boolean arguments in favor of using enums
* T-D pass now eliminates unreachable globals

llvm-svn: 5419
2003-01-23 22:05:33 +00:00
Chris Lattner
1c82a35a0b Slight efficiency improvement
llvm-svn: 5418
2003-01-23 21:31:16 +00:00
Chris Lattner
bd72aa79fc Fix analysis of the Burg program
llvm-svn: 5401
2003-01-22 22:00:24 +00:00
Misha Brukman
1264a03c8a 'graph' is spelled without a 'c'.
Also added Statistic counters for NoAlias and MayAlias.

llvm-svn: 4972
2002-12-12 05:34:10 +00:00
Vikram S. Adve
773fe59c79 Two bug fixes:
(1) Make entries for Constant values in the ScalarMap.
(2) Set MOD bit for the node pointed to by the
    argument of a free instruction.

llvm-svn: 4948
2002-12-06 21:17:10 +00:00
Vikram S. Adve
cb7daf77e8 Fix several related bugs in DSNode::mergeWith() caused by the
fact that the incoming nodes may be merged away at intermediate
steps.  Use an extra level of indirection via DSNodeHandles
to track the nodes being merged.  All this now happens in a
static helper function MergeNodes().

llvm-svn: 4947
2002-12-06 21:15:21 +00:00
Vikram S. Adve
ab3a68a7c3 Cute bug fix: when moving links from N to this, some links could have
been missed if node *this got merged away due to recursive merging!
Also, links were not moved correctly if a node is collapsed.

llvm-svn: 4933
2002-12-05 17:17:26 +00:00
Vikram S. Adve
b0371788d9 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.

llvm-svn: 4836
2002-11-27 17:41:13 +00:00
Vikram S. Adve
7bbda247e2 Keep global nodes in each DS Graph (by forcing them to be marked live).
llvm-svn: 4831
2002-11-25 18:21:25 +00:00
Chris Lattner
ad3955d6a5 Add peak memory usage measurement stuff
Add structure padding optimizations

llvm-svn: 4749
2002-11-18 21:44:46 +00:00
Chris Lattner
f179a40a00 Add peak memory usage support
llvm-svn: 4748
2002-11-18 21:44:19 +00:00
Chris Lattner
25a8814af0 Add stats
llvm-svn: 4747
2002-11-18 21:42:45 +00:00
Chris Lattner
38bc372a49 Add hack to only consider indirect calls indirect if they do more than cast
their source function

llvm-svn: 4723
2002-11-17 22:17:12 +00:00
Chris Lattner
322901a840 Add MaxSCC statistics
llvm-svn: 4722
2002-11-17 22:16:28 +00:00
Vikram S. Adve
2dfc11dc3b Pass to compute various statisics related to DSGraphs.
For now, this just computes the #indirect call sites and
the avg. #callees per indirect call site (actually it prints
both totals and the average is their ratio).

llvm-svn: 4705
2002-11-13 15:41:00 +00:00
Chris Lattner
b257e87db5 Inline graphs from outside the SCC into the SCC before SCC resolution starts
llvm-svn: 4701
2002-11-12 15:58:08 +00:00
Chris Lattner
cd37857ad0 Fix two bugs:
* The globals vector was getting broken and unsorted, this caused vortex
   to get badly pessimized
 * Node offset handling was being handled really poorly, and in particular
   we were not merging types with offsets right.  This causes several graphs
   to be non-merged.

llvm-svn: 4699
2002-11-12 07:20:45 +00:00
Chris Lattner
f56a5282d2 Handle a mismatch between # function args and call site args
llvm-svn: 4696
2002-11-11 21:36:05 +00:00
Chris Lattner
6fcb6f1472 Elimiante calls to a node with nothing in it.
llvm-svn: 4695
2002-11-11 21:35:38 +00:00
Chris Lattner
0052b69a32 Complete rewrite of BU code to use Tarjan's SCC finding algorithm to drive
the algorithm instead of hand coded depth first iteration

llvm-svn: 4694
2002-11-11 21:35:13 +00:00
Chris Lattner
fb44e1ff28 Mark stuff reachable by _AUX_ calls as incomplete in the BU graph
llvm-svn: 4690
2002-11-11 03:36:55 +00:00
Chris Lattner
f05d126a68 Fix infinite loop in the BU algorithm. Unfortunately this dies a serious
death when handling moderately sized SCC's, but what can you do

llvm-svn: 4689
2002-11-11 00:01:34 +00:00
Chris Lattner
a7302da4e8 Print the right call set size
llvm-svn: 4688
2002-11-11 00:01:02 +00:00
Chris Lattner
41bf6e1bc6 Use call site mergeWith method to simplify code
llvm-svn: 4687
2002-11-11 00:00:46 +00:00
Chris Lattner
0fe1af497d Fix a bug that could trigger when varargs call sites had non-matching number of arguments
llvm-svn: 4683
2002-11-10 07:46:08 +00:00
Chris Lattner
928e9c012b * Dramatically rework liveness evaluation.
* Implement the first step of the Globals graph: Deleting nodes from function
  graphs.  In practice, these nodes need to be moved to the globals graph, but
  this will be taken care of later.  Note that the graphs computed right now are
  not strictly correct!

llvm-svn: 4681
2002-11-10 06:59:55 +00:00
Chris Lattner
f5667969d1 Honor the shouldPrintAuxCalls flag
llvm-svn: 4678
2002-11-10 06:53:59 +00:00
Chris Lattner
2597c1158f Initialize PrintAuxCalls member
llvm-svn: 4677
2002-11-10 06:53:38 +00:00
Chris Lattner
a30663385f * 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.

llvm-svn: 4675
2002-11-10 06:52:47 +00:00
Chris Lattner
1fe76d2385 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.

llvm-svn: 4666
2002-11-09 22:07:02 +00:00
Chris Lattner
d9c732c581 Remove obsolete code
llvm-svn: 4665
2002-11-09 21:41:44 +00:00
Chris Lattner
20d264e16b Fix logic
llvm-svn: 4664
2002-11-09 21:40:58 +00:00
Chris Lattner
0752756a6a Add globals graphs to all three passes
llvm-svn: 4663
2002-11-09 21:12:07 +00:00
Chris Lattner
f6ea37ce99 Move maskNodeTypes to header file
llvm-svn: 4661
2002-11-09 21:02:26 +00:00
Chris Lattner
e726eb5ea7 Clean up DSGraph::removeDeadNodes interface
llvm-svn: 4660
2002-11-09 21:00:49 +00:00
Chris Lattner
3e54e8f3ca Make removeTriviallyDeadNodes a private interface of DSGraph
llvm-svn: 4659
2002-11-09 20:55:24 +00:00
Chris Lattner
082bbe3069 Don't put constants into the scalar map!
llvm-svn: 4657
2002-11-09 20:14:03 +00:00
Chris Lattner
1c5c03d6f7 Add initial support for a globals graph
llvm-svn: 4656
2002-11-09 20:01:01 +00:00
Chris Lattner
5a11bf70c3 Tighten up array handling
llvm-svn: 4655
2002-11-09 19:25:27 +00:00
Chris Lattner
6172544663 #include Datastructure.h first
llvm-svn: 4654
2002-11-09 19:25:10 +00:00
Chris Lattner
b3580d5111 Fix warning & release build
llvm-svn: 4648
2002-11-09 00:49:05 +00:00
Chris Lattner
608bb157f7 Fold arrays down to a single element. This causes huge wins on some benchmarks
for example: 197.parser (64M->14M), 164.gzip (14M->2.7M).  The actual graphs
represented should not change at all.

llvm-svn: 4643
2002-11-08 22:49:57 +00:00
Chris Lattner
4baa01ba61 ONLY merge in the aux call sites, this causes a HUGE speedup
llvm-svn: 4640
2002-11-08 22:27:25 +00:00
Chris Lattner
380395f58e Allow specification of whether the call sites should be copied, AND whether
the aux call sites should be copied

llvm-svn: 4639
2002-11-08 22:27:09 +00:00
Chris Lattner
5cffea23bb Reenable 'quick exit' case
llvm-svn: 4638
2002-11-08 22:26:43 +00:00
Chris Lattner
b3bf781d44 Reimplement TD pass completely it now works
llvm-svn: 4635
2002-11-08 21:28:37 +00:00
Chris Lattner
f1e963a98c Cannot modify original call sites vector
llvm-svn: 4634
2002-11-08 21:27:37 +00:00
Chris Lattner
427b472549 - Add a bunch of checking to make sure that dead nodes are not used after they
are marked DEAD.  This helped track down some bugs
- Fix a bunch of bugs where we were doing work on nodes after they became dead
- Add support for aux function call sites
- Add support for not cloning call sites

llvm-svn: 4633
2002-11-08 21:27:12 +00:00
Chris Lattner
4feccc4d45 Remove gunk used by broken TD pass
llvm-svn: 4632
2002-11-08 21:25:24 +00:00
Chris Lattner
22e36c86cd Use DSNodeHandleMap instead to be safe
llvm-svn: 4622
2002-11-08 05:01:14 +00:00
Chris Lattner
986ec528fd * actually handle constants (especially constantexprs) correctly.
- This seems to dramatically improve many benchmarks, only slowing down
    gzip significantly.

llvm-svn: 4621
2002-11-08 05:00:44 +00:00
Chris Lattner
86b5e92d45 Add flush
llvm-svn: 4619
2002-11-08 01:21:07 +00:00
Chris Lattner
450e1fbc76 Instead of using a bool that constant has to be explained, use a self
explanitory enum instead.

llvm-svn: 4600
2002-11-07 07:06:20 +00:00
Chris Lattner
7d2624d4f3 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.

llvm-svn: 4599
2002-11-07 06:31:54 +00:00
Chris Lattner
dfba076f5b Rename DataStructureAnalysis namespace to DS
llvm-svn: 4596
2002-11-07 05:20:53 +00:00
Chris Lattner
d68d0a9037 Minor bugfix to enable generation of methcall.llvm.lib, objinst.llvm.lib, and
The problem was merging two unsized types like function's, ie int (int*) with
int (uint *)

llvm-svn: 4594
2002-11-07 04:59:28 +00:00
Chris Lattner
b0de126c1a Compute total number of nodes and # call nodes
llvm-svn: 4592
2002-11-07 02:18:46 +00:00
Chris Lattner
f352eadeb3 Move printouts to be wrapped in DEBUG() macros
llvm-svn: 4588
2002-11-07 01:54:56 +00:00
Chris Lattner
1efa9f0247 When the -only-print-main-ds option is specified, still print out graph size
statistics for skipped functions

llvm-svn: 4587
2002-11-07 01:54:44 +00:00
Chris Lattner
97722c2dad Change Steens class to build with Vikram's changes
llvm-svn: 4572
2002-11-06 18:08:32 +00:00
Chris Lattner
6a019cdff5 Make PointerSize & Shift be enums
Fix problem with recursive merging

llvm-svn: 4570
2002-11-06 18:01:39 +00:00
Chris Lattner
d0387e7e11 Dramatically simplify internal DSNode representation, get implementation
*FULLY OPERATIONAL* and safe.  We are now capable of completely analyzing
at LEAST the Olden benchmarks + 181.mcf

llvm-svn: 4562
2002-11-06 06:20:27 +00:00
Chris Lattner
304e29942d Delete "StripScalars" argument to cloneInto method
llvm-svn: 4560
2002-11-06 06:16:30 +00:00
Chris Lattner
b09aadd633 Attempted fixes to the mergemap to make it work better.
Ended up disabling merge map merging completely.  It shall be removed.

llvm-svn: 4550
2002-11-05 00:01:58 +00:00
Chris Lattner
5c467c7d99 Change the "Cannot merge two portions of the same node yet" from an assertion
into a "oh crap, lets collapse" case

llvm-svn: 4530
2002-11-04 06:48:26 +00:00
Chris Lattner
4e4beb637b Give a better error message in an unhandled case
llvm-svn: 4521
2002-11-04 02:29:15 +00:00
Chris Lattner
8d63aab886 Rename ValueMap to ScalarMap
llvm-svn: 4516
2002-11-03 21:27:48 +00:00
Chris Lattner
0ee058644e Rename NewNode flag to HeapNode
llvm-svn: 4515
2002-11-03 21:24:04 +00:00
Chris Lattner
7287a8f9a8 Change the letters used to represent stack and heap allocations to "S" and "H"
respectively.  This is to make presentation easier in the paper.

llvm-svn: 4514
2002-11-03 19:46:15 +00:00
Chris Lattner
702ac95902 Implement the "unknown flag" which mainly consists of aligning printing code
llvm-svn: 4490
2002-11-02 00:36:03 +00:00
Chris Lattner
53f7777f77 Oops, this was not meant to be checked in
llvm-svn: 4489
2002-11-02 00:26:32 +00:00
Chris Lattner
226c503f31 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.  :)

llvm-svn: 4488
2002-11-02 00:13:20 +00:00
Chris Lattner
251a8d9df5 Fix comments, steens is context sensitive, we just haven't implemented
mod/ref apis yet

llvm-svn: 4485
2002-11-01 17:34:23 +00:00
Chris Lattner
52b845cd0c Add a fixme
llvm-svn: 4479
2002-10-31 23:24:00 +00:00
Chris Lattner
32eb8c3659 * Minor optimization: when merging nodes, merge the smaller one into the
larger one.
     * Handle the case where we are merging two nodes of different size better.

llvm-svn: 4476
2002-10-31 22:41:15 +00:00
Chris Lattner
07c1f70586 Remove dead code
llvm-svn: 4467
2002-10-31 06:52:26 +00:00
Chris Lattner
317daff9bf This fixes all kinds of problems with array handling. There are still bugs to
be fixed, but we are getting much closer now.

    * Make DSNode::TypeRec a full fledged DSTypeRec type.
    * Add methods used to update and access the typerecords elements
    * Add methods to query if and to cause a node to be completely folded
    * DSGraph construction doesn't use the allocation type for anything at all,
      now nodes get their type information based on how they are used.
    * Fixed a bug with global value handling introduced in the last checkin
    * GEP support is now much better, arrays are handled correctly.  The array
      flag is now updated in type records.  There are still cases that are not
      handled yet (we do not detect pessimizations), but getting much closer.

llvm-svn: 4465
2002-10-31 05:45:02 +00:00
Chris Lattner
296c58a00c - Make sure to only keep track of mappings that the TD pass may need in the
future.  This prevents having spurious map entries to nodes that we really
    don't care about.  This allows us to reenable the DeadNodeElim, which was
    disabled.

llvm-svn: 4260
2002-10-22 16:01:03 +00:00
Chris Lattner
61b32b3ab0 The callee is not correct, and confuses the TD pass. Null it out.
llvm-svn: 4259
2002-10-22 15:58:46 +00:00
Chris Lattner
1157e5dafb Delete unused arguments to DSGraph::cloneInto method
llvm-svn: 4253
2002-10-21 19:50:29 +00:00
Chris Lattner
4410178282 - 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.

llvm-svn: 4252
2002-10-21 19:47:18 +00:00
Chris Lattner
7588e35aa8 Add another copy ctor form
llvm-svn: 4251
2002-10-21 15:32:34 +00:00
Chris Lattner
1276c50e7b As it turns out, we don't need a fully generic mapping copy ctor, we just need
something that maps through a std::map.  Since this simplified the client and
implementation code, do so now.

llvm-svn: 4250
2002-10-21 15:04:18 +00:00
Chris Lattner
8929f75913 Don't create a new node for every reference to a global. This caused a huge
node explosion that doesn't help anything at all.  In previous versions of
the representation this DID help, but not anymore.

llvm-svn: 4249
2002-10-21 13:51:30 +00:00
Chris Lattner
9f6ddf9bdd Fix a confusing bug that caused return value and callee pointers to not
be printed!

llvm-svn: 4248
2002-10-21 13:47:57 +00:00
Chris Lattner
01fc78de5f Remove some unneccesary 'using' directives
llvm-svn: 4246
2002-10-21 13:31:48 +00:00
Chris Lattner
1953a9de17 Fix bug with prior checkin
llvm-svn: 4242
2002-10-21 02:18:55 +00:00
Chris Lattner
2914391ab6 - 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.

llvm-svn: 4240
2002-10-21 02:08:03 +00:00
Chris Lattner
189b9b5397 Avoid extra copy
llvm-svn: 4239
2002-10-20 22:12:06 +00:00
Chris Lattner
9d0418d007 Simplify code a bit, add comment flyer
llvm-svn: 4238
2002-10-20 22:11:44 +00:00
Chris Lattner
4eec37a762 Split some long lines
llvm-svn: 4237
2002-10-20 22:11:17 +00:00
Vikram S. Adve
85a358583f Remove spurious caller pointer in DSCallSite.
Also add functions to access pointer argument nodes cleanly.

llvm-svn: 4235
2002-10-20 21:41:02 +00:00
Chris Lattner
ff8176c481 This function can be static
llvm-svn: 4234
2002-10-20 20:39:31 +00:00
Chris Lattner
cf6f36ae27 Fix previous checkin :(
llvm-svn: 4233
2002-10-20 20:39:17 +00:00
Chris Lattner
2f778ae5aa Avoid extra callSite copy
llvm-svn: 4232
2002-10-20 20:32:13 +00:00
Chris Lattner
3af7377974 Print the array flag
llvm-svn: 4231
2002-10-20 20:29:10 +00:00
Vikram S. Adve
c02c96c3de 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.

llvm-svn: 4228
2002-10-20 18:07:37 +00:00
Chris Lattner
efc251af3d Convert typerec to be a structure instead of a pair
llvm-svn: 4226
2002-10-18 18:22:46 +00:00
Chris Lattner
bd5e932aeb Print Mod/ref info
llvm-svn: 4224
2002-10-17 22:13:28 +00:00
Chris Lattner
51b2abb899 Calculate mod/ref info
llvm-svn: 4223
2002-10-17 22:13:19 +00:00
Chris Lattner
4e44ccce8a Remove more obsolete code
llvm-svn: 4221
2002-10-17 20:53:12 +00:00
Chris Lattner
2ffe6a8e0b * 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

llvm-svn: 4220
2002-10-17 20:09:52 +00:00
Chris Lattner
920190f83a Remove obsolete code
llvm-svn: 4218
2002-10-17 04:58:10 +00:00
Chris Lattner
90ccd73585 Enable incompleteness marking
llvm-svn: 4217
2002-10-17 04:57:28 +00:00
Chris Lattner
5028142e9a * First try at implementing TD pass this does not merge global nodes yet,
among other things.
  * Significant rewrite of TD pass to avoid potentially N^2 algorithms if
    possible.  It is still not complete, but at least it's checked in now.

llvm-svn: 4215
2002-10-17 04:26:54 +00:00
Chris Lattner
b61fe19f98 Reenable printing of TD analysis
llvm-svn: 4214
2002-10-17 04:24:30 +00:00
Chris Lattner
0c48561a9e * Add data structures and code to track the call sites for each function
llvm-svn: 4213
2002-10-17 04:24:08 +00:00
Chris Lattner
516c8391c7 Cleanup data structure graph printer, eliminate hard coded printing in
favor of generic printer.

llvm-svn: 4209
2002-10-17 01:02:46 +00:00
Chris Lattner
1e46327844 Make sure to print out the call nodes as well
llvm-svn: 4203
2002-10-16 20:16:16 +00:00
Chris Lattner
278e5a3fe6 * Print the "return" node in the graphs
llvm-svn: 4199
2002-10-16 02:04:36 +00:00
Chris Lattner
3702063ff3 The second element of the iterator is really an offset, not a link
llvm-svn: 4196
2002-10-16 01:43:11 +00:00
Chris Lattner
9ed6bfa052 Specify the graph name
llvm-svn: 4195
2002-10-16 01:34:28 +00:00
Chris Lattner
afeca1f7f6 - DSGraph Printing Improvements:
* Print edge source labels again
     * Override node shape to be Mrecord again, instead of just record.

llvm-svn: 4193
2002-10-16 01:18:27 +00:00
Chris Lattner
ee64370eb5 Halfway conversion from custom printing to GraphWriter printing
llvm-svn: 4146
2002-10-13 19:31:57 +00:00
Chris Lattner
eeecc3e1b3 Prune function nodes that are no longer referenced due to inlining
llvm-svn: 4036
2002-10-03 21:55:28 +00:00
Chris Lattner
8f603615d8 sgefa uses truely huge data structures nodes. Only print part of them if they
are so big

llvm-svn: 4035
2002-10-03 21:55:13 +00:00
Chris Lattner
31d4a68166 Handle bug exposed by power benchmark
llvm-svn: 4033
2002-10-03 21:06:38 +00:00
Chris Lattner
fcdb95cd42 Reimplement/port the Bottom Up Closure pass
llvm-svn: 4031
2002-10-03 20:38:41 +00:00
Chris Lattner
e52f808665 DataStructure.h doesn't include DSGraph.h
llvm-svn: 4029
2002-10-02 22:14:38 +00:00
Chris Lattner
62ca2aa593 * Implement fully general merging of array subscripts on demand! This
does not handle the initial pointer index case yet though.

llvm-svn: 4012
2002-10-02 06:24:36 +00:00