Commit Graph

1283 Commits

Author SHA1 Message Date
Chris Lattner
0700123431 EquivClassGraphs is now in DataStructure.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21042 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 20:08:17 +00:00
Chris Lattner
2ccc5f1081 use a callee_iterator typedef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21038 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 20:02:41 +00:00
Chris Lattner
021decc82d Change the ActualCallees callgraph from hash_multimap<Instruction,Function>
to std::set<std::pair<Inst,Func>> to avoid duplicate entries.

This speeds up the CompleteBU pass from 1.99s to .15s on povray and the
eqgraph passes from 1.5s to .16s on the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21031 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 19:17:18 +00:00
Chris Lattner
175b9635cc import all of the rest of the stubs that dsa uses for direct comparison
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20932 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 20:36:05 +00:00
Chris Lattner
77b505670c learn about some more functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20929 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 20:04:24 +00:00
Chris Lattner
9342a939eb Fix a problem where we not marking incoming arguments to functions with
external linkage as incomplete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20927 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 19:16:59 +00:00
Chris Lattner
cfba7981eb there is no point comparing against null pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20925 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 17:44:52 +00:00
Chris Lattner
76bc5ce5c4 Fix a major problem with global variable initializers. This could cause
us to have stuff pointing to the null pointer, which makes no sense
(the null ptr is an ssa value, not the null object)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20922 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 17:21:53 +00:00
Chris Lattner
4de57fd9e9 add some more functions, ignore setcc for constraints!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20917 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 06:52:20 +00:00
Chris Lattner
8a44643d61 Handle "known" external calls context sensitively, add support for realloc
and a couple of other functions that are important.

Handle aggregate undef values for gv initializers


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20914 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 06:09:07 +00:00
Chris Lattner
f392c64ec6 Teach andersens that non-escaping memory cannot be mod/ref'd by external fn calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20891 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 06:21:17 +00:00
Misha Brukman
be5e2f4f9b Fix grammar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20890 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 04:32:12 +00:00
Chris Lattner
c3c9fd0dd6 Make anders-aa much more precise by not being completely pessimistic about
external functions.  Teach it about a few important ones.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20889 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 04:03:52 +00:00
Chris Lattner
493f6366cb wrap some long lines
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20884 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-27 22:03:46 +00:00
Chris Lattner
93ab219244 remove ...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20883 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-27 21:57:09 +00:00
Chris Lattner
40ee8ce28b speed up steens by using spliceFrom, improve its precision by realizing that
an incomplete node cannot alias a complete node.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20882 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-27 21:56:55 +00:00
Chris Lattner
267a1b02a2 teach andersens about undef
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20881 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-27 18:58:23 +00:00
Chris Lattner
5f4c0a88ee Don't give up completely, maybe other AA can say something about this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20873 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-27 00:02:33 +00:00
Chris Lattner
e70492d0e2 Factor out percentage printing into its own function. Make two changes to
the function: print more precision XX.X% instead of XX%, and cast to ULL
before scaling by 100/1000 to avoid wrap around for large numbers of queries
(such as occur for 253.perlbmk and 176.gcc)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20872 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 23:56:33 +00:00
Chris Lattner
1b9a2aac98 Cache mapping information for a call site after computing it for a mod/ref
query.  If the next mod/ref query happens to be for the same call site
(which is extremely likely), use the cache instead of recomputing the
callee/caller mapping.  This makes -aa-eval ***MUCH*** faster with
ds-aa


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20871 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 23:29:03 +00:00
Chris Lattner
a7337dc2b9 Remove more long dead code: dsa doesn't provide must alias info
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20870 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 22:54:46 +00:00
Chris Lattner
5a6a9d4f0c remove some unsafe code that has long been dead
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20869 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 22:48:42 +00:00
Chris Lattner
bc499de74f slightly improve mod/ref for DSAA by checking the globals graph for fallback
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 22:47:03 +00:00
Chris Lattner
b7523418b0 Teach steens-aa two things about mod/ref information:
1. If memory never escapes the program, it cannot be mod/ref'd by external
     functions.
  2. If memory is global never mod/ref'd in the program, it cannot be mod/ref'd
     by any call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20867 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 22:43:20 +00:00
Chris Lattner
0772e78789 Interchange this loop so that we test all pointers against one call site
before moving on to the next call site.  This will be a more efficient way
to compute the mod/ref set for AA implementations like DSA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20866 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 22:16:44 +00:00
Chris Lattner
cf9082589c no really, don't double count these nodes either!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20837 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 20:54:45 +00:00
Chris Lattner
0423e031d6 Don't count all of the nodes in the SCC once for each function in the SCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20836 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 20:37:32 +00:00
Chris Lattner
33b4276053 Grow the EQ classes for globals at the end of the BU pass. This shrinks
memory usage in the TD pass for 254.gap from 31.3MB to 3.9MB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20834 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 16:45:43 +00:00
Chris Lattner
2958eeabcf Treat free operations as volatile, since they cannot be moved. This fixes
Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20830 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 05:49:37 +00:00
Chris Lattner
20da24c4b9 remove a debugging timer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20827 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:06:09 +00:00
Chris Lattner
b2dbdc1301 Two changes here:
1. Instead of copying Local graphs to the BU graphs to start with, use
     spliceFrom to do the job (which is constant time in this case).  On
     176.gcc, this chops off .17s from the bu pass.
  2. When building SCC graphs, simplify the logic and use spliceFrom to
     do the heavy lifting, instead of cloneInto/delete.  This slices
     another .14s off 176.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20826 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:05:04 +00:00
Chris Lattner
ce7068d378 Make the spliceFrom case where one graph is completely empty be constant time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 00:02:41 +00:00
Chris Lattner
5734e4331e add a new DSGraph::spliceFrom method, which violently takes the content of
one graph and plops it into another, without breaking a sweat.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20824 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:46:04 +00:00
Chris Lattner
4da120e5d6 This replaces the correct but slow code with a more aggressive scc-finder
based approach to find globals and call sites that need to be copied.  This
speeds up the BU pass on 176.gcc from 22s back up to 2.3s.  Not as good
as 1.5s, but at least it's correct :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20820 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 23:06:02 +00:00
Chris Lattner
09adbbc99e only look at successors of globals. This gets us down to "only" 22s in the
bu pass for 176.gcc


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20818 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 21:17:27 +00:00
Chris Lattner
d8642125e4 Unfortunately, a previous patch was not safe. Revert it, reimplement
something correct. Unfortunately this takes 176.gcc's BU phase back
up to 29s from 1.5.  This fixes DSGraph/2005-03-24-Global-Arg-Alias.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20817 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 21:07:47 +00:00
Chris Lattner
0d397bd437 don't bother |'ing in 0's
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20815 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 18:42:51 +00:00
Chris Lattner
d94b4d5b9c be more aggressive about incompleteness marking
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20814 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 18:42:28 +00:00
Chris Lattner
c5132e65a6 Fix a crash while promoting a value out of a loop from a global variable
when using ds-aa


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20802 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 04:22:04 +00:00
Chris Lattner
7d671b88e8 teach ds-aa about mod/ref for external function calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20801 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 03:04:50 +00:00
Chris Lattner
62da315c85 Simplify dead code into a fixme :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20800 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 02:41:19 +00:00
Chris Lattner
c4417f98e5 fix a compiler crash in runtime/libprofile
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20799 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-24 01:22:52 +00:00
Chris Lattner
f5eaf3c62c wrap a long line
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20797 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:51:12 +00:00
Chris Lattner
ec6518ddc2 If we are calling an external function, chain to another AA to potentially
decide, don't just immediately give up.

This implements GlobalsModRef/chaining-analysis.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20796 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:49:47 +00:00
Chris Lattner
8cfd24df54 Make this more efficient by only making one virtual method call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20793 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 23:26:58 +00:00
Chris Lattner
d433bde071 Make this a bit more aggressive
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20792 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 22:06:41 +00:00
Chris Lattner
65512d2525 a hack to allow count-aa to work with ds-aa :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20791 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:59:34 +00:00
Chris Lattner
cf9f20189f Add two options to allow -count-aa to print queries either (1) all queries,
or (2) only queries that are not successful (e.g. return may alias)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20790 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 21:59:07 +00:00
Chris Lattner
c14f59cb72 turn a dead conditional into an assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20787 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 20:12:08 +00:00
Chris Lattner
e3f1d8a525 Totally gut mergeInGraph. There is absolutely no reason to be merging
global roots in from callees to callers.  The BU graphs do not have accurate
globals information and all of the clients know it.  Instead, just make sure
the GG is up-to-date, and they will be perfectly satiated.

This speeds up the BU pass on 176.gcc from 5.5s to 1.5s, and Loc+BU+TD
from 7s to 2.7s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20786 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 20:08:59 +00:00
Chris Lattner
eb39492deb wrap a long line
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20785 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 16:43:11 +00:00
Chris Lattner
943814bb01 Make -steens-aa more conservative (aka correct) by making sure to obey
incompleteness flags.

Make it more aggressive by taking field sensitive information into
account.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20781 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:48:09 +00:00
Chris Lattner
2f72f9462b implement Analysis/DSGraph/field-sensitive.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-23 01:47:19 +00:00
Chris Lattner
1e9d1475bc Several changes here:
1. Increase max node size from 64->256 to avoid collapsing an important
   structure in 181.mcf
2. If we have multiple calls to an indirect call node with an indirect
   callee, fold these call nodes together, to avoid DSA turning apoc into
   a flaming fireball of death when analyzing 176.gcc.
  With this change, 176.gcc now takes ~7s to analyze for loc+bu+td, with
  5.7s of that in the BU pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20775 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 23:54:52 +00:00
Chris Lattner
9547adef58 Mark external globals incomplete in the BU Globals graph, fixing
Analysis/DSGraph/2005-03-22-IncompleteGlobal.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20773 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 22:10:22 +00:00
Chris Lattner
6ae7e9837c Directly count the number of memory instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20766 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 03:55:10 +00:00
Chris Lattner
a513fb127f Remove an iteration pass over the entire scalarmap for each function created
by not allowing integer constants to get into the scalar map in the first
place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20764 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 02:45:13 +00:00
Chris Lattner
9308a35532 When making a clone of a DSGraph from the BU pass, make sure to remember that
this clone is supposed to be used for *ALL* of the functions in the SCC.

This fixes the memory explosion problem the TD pass was having, reducing the
memory growth from 24MB -> 3.5MB on povray and 270MB ->8.3MB on perlbmk!
This obviously also speeds up the TD pass *a lot*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20763 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 01:50:42 +00:00
Chris Lattner
3bc703ba22 Don't use operator[], use the new method instead, which is faster. This speeds
up the TD pass about 30% for povray and perlbmk.  It's still not clear why
copying a 5MB set of graphs turns into a 25MB set of graphs though :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20762 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 01:42:59 +00:00
Chris Lattner
a2197139b5 Now that the dead ctor is gone, nothing uses the old node mapping exported by
cloneInto: make it an internally used mapping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20760 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:36:51 +00:00
Chris Lattner
5805c426dc remove a dead ctor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20759 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:33:35 +00:00
Chris Lattner
d65145bd3d now that the second argument is always this->ReturnNodes, don't bother passing it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20758 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:29:44 +00:00
Chris Lattner
560af8aa97 instead of using a local RetValMap, just use the graph we are cloning into
for the return node map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20757 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:25:52 +00:00
Chris Lattner
271d6884e3 now that the valuemapping is always the local scalar map, we can eliminate
this identity merge.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20755 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:22:45 +00:00
Chris Lattner
3c920fa861 remove the second argument to cloneInto
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20754 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:21:05 +00:00
Chris Lattner
24c47c5c45 add some timers, don't clone aux nodes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20752 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:12:00 +00:00
Chris Lattner
612f0b74d4 move this out of line
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20751 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:09:45 +00:00
Chris Lattner
7080c3e54e don't generate temporary scalarmaps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20749 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-22 00:04:21 +00:00
Chris Lattner
f09ecffa0d allow passing clone flags down to cloneInto
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20748 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 22:49:53 +00:00
Chris Lattner
275b301740 Enhance the TD pass to build composite graphs when we have indirect call
sites that target multiple callees.  If we have a function table, for
example, with N callees, and M callers call through it, we used to have
to perform O(M*N) graph inlinings.  Now we perform O(M+N) inlinings.

This speeds up the td pass on perlbmk from 36.26s to 25.75s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20743 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 20:31:29 +00:00
Chris Lattner
b3439374ac make this const correct
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20741 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 20:28:50 +00:00
Chris Lattner
eb144f5e73 Fix a major problem where we didn't add call graph edges for call sites with
more than 1 callee.  This fixes Analysis/DSGraph/FunctionPointerTable-const.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20740 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 20:20:49 +00:00
Chris Lattner
c26f6d3899 Ugh, for some reason, I can't call this unless the reference is const!?!?!?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20732 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 10:00:45 +00:00
Chris Lattner
3f90a94c5d The reachability cloner should add arguments to merged calls when the RHS of
the merge has more operands than the LHS.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20731 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 09:39:51 +00:00
Chris Lattner
c2b94805fb 'note to self'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20727 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 08:43:32 +00:00
Chris Lattner
d57e55ec0d Change the way that the TD pass inlines graphs. Instead of inlining each
graph into all of the functions it calls when we visit a graph, change it so
that the graph visitor inlines all of the callers of a graph into the current
graph when it visits it.

While we're at it, inline global information from the GG instead of from each
of the callers.  The GG contains a superset of the info that the callers do
anyway, and this way we only need to do it one time (not one for each caller).

This speeds up the TD pass substantially on several programs, and there is
still room for improvement.  For example, the TD pass used to take 147s
on perlbmk, it now takes 36s.  On povray, we went from about 5s to 1.97s.
134.perl is down from ~1s for Loc+BU+TD to .6s.

The TD pass needs a lot of improvement though, which will occur with later
patches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20723 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-21 04:55:35 +00:00
Chris Lattner
53491b3db7 Don't strip modref bits when inlining down the call graph. This fixes
the DSGraph/2003-06-30-TopDownResolve.ll regression from last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20717 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 18:02:56 +00:00
Chris Lattner
cc9bda6a41 Remove the ability to keep track of inlined globals, which is always dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20716 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 04:30:30 +00:00
Chris Lattner
36474c923f This call is always a noop, remove it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20714 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 04:29:54 +00:00
Chris Lattner
bc6f966a44 remove some pointless asserts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20713 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 04:29:39 +00:00
Chris Lattner
5f75ff65bc -steens doesn't use the inlined globals facility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20712 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 04:23:57 +00:00
Chris Lattner
9b426bdd81 Build EC's for globals twice. The first is after constructing the initial
Globals Graph for the local pass, the second is after all of the locals
graphs have been constructed.  This allows for many additional global EC's
to be recognized that weren't before.  This speeds up analysis of programs
like 177.mesa, where it changes DSA from taking 0.712s to 0.4018s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20711 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 03:32:35 +00:00
Chris Lattner
7cdf321256 Add a new DSNode::removeGlobal method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20710 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 03:29:54 +00:00
Chris Lattner
6b9eb35442 Transform BU pass to not use the horrible DSCallSiteIterator class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20708 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:42:07 +00:00
Chris Lattner
82c6c72862 Implement new methods for dealing with DSNode global lists, rename uses of
old methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20707 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:41:38 +00:00
Chris Lattner
2496d696f0 use simpler methods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20706 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:41:16 +00:00
Chris Lattner
977b705d74 method was renamed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20705 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:40:27 +00:00
Chris Lattner
f5c7ad8949 print out equiv class info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20704 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:40:11 +00:00
Chris Lattner
bf30e7268c some methods got renamed
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20703 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:40:04 +00:00
Chris Lattner
9454dda28a Make use of simpler DSNode methods.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20702 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:39:49 +00:00
Chris Lattner
1cee779cec #ifdef out a function only used by #ifdef'd code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20700 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 02:14:15 +00:00
Chris Lattner
48427b539f comment cleanup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20699 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-20 01:18:00 +00:00
Chris Lattner
f4f6227989 Create an equivalence class of global variables that DSA will never be able
to tell apart anyway, and only track the leader for of these equivalence
classes in our graphs.

This dramatically reduces the number of GlobalValue*'s that appear in scalar
maps, which A) reduces memory usage, by eliminating many many scalarmap entries
and B) reduces time for operations that need to execute an operation for each
global in the scalar map.

As an example, this reduces the memory used to analyze 176.gcc from 1GB to
511MB, which (while it's still way too much) is better because it doesn't hit
swap anymore.  On eon, this shrinks the local graphs from 14MB to 6.8MB,
shrinks the bu+td graphs of povray from 50M to 40M, shrinks the TD graphs of
130.li from 8.8M to 3.6M, etc.

This change also speeds up DSA on large programs where this makes a big
difference.  For example, 130.li goes from 1.17s -> 0.56s, 134.perl goes
from 2.14 -> 0.93s, povray goes from 15.63s->7.99s (!!!).

This also apparently either fixes the problem that caused DSA to crash on
perlbmk and gcc, or it hides it, because DSA now works on these.  These
both take entirely too much time in the TD pass (147s for perl, 538s for
gcc, vs 7.67/5.9s in the bu pass for either one), but this is a known
problem that I'll deal with later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-19 22:23:45 +00:00
Chris Lattner
605a87cc19 Switch to use the new interface for the EquivalenceClasses class, and fix
a bug involving SCC's who have multiple members that are part of an EC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20678 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-19 05:15:27 +00:00
Chris Lattner
5021b8c2d6 do not bother inlining nullary functions without return values. The only
effect these calls can have is due to global variables, and these passes
all use the globals graph to capture their effect anyway.  This speeds up
the BU pass very slightly on perlbmk, reducing the number of dsnodes
allocated from 98913 to 96423.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 23:19:47 +00:00
Chris Lattner
db7436aae8 fix a bogus assertion
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20675 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 23:18:30 +00:00
Chris Lattner
0c9707a190 another fastpath
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20674 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 23:18:20 +00:00
Chris Lattner
41b162faba expose this pass to both opt and analyze
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20672 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 05:27:57 +00:00
Chris Lattner
4707b895b6 remove a bogus optimization. This only works if there are no globals in the
graph, and the combination of a function that does not reference globals, takes
not arguments and returns no value is pretty rare.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20670 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 00:23:59 +00:00
Chris Lattner
511f60c707 Rewrite DSAA::getModRefInfo to compute the mapping between caller and callee
to determine mod/ref behavior, instead of creating a *copy* of the caller
graph and inlining the callee graph into the copy.

This speeds up aa-eval on Ptrdist/yacr2 from 109.13s to 3.98s, and gives
identical results.  The speedup is similar on other programs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20669 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-18 00:21:03 +00:00