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Commit Graph

120 Commits

Author SHA1 Message Date
Chris Lattner
f530302eda Eliminate RegisterAnalysis. RegisterPass now does all that is necessary.
llvm-svn: 29921
2006-08-27 22:30:17 +00:00
Andrew Lenharth
f0ecdbe7ef Do partial inlining in BU. This resolves more call sites. Also add options to merge in globals during recursion and to back annotate DSNodes when function pointers are resolved. This makes PA work for a whole lot more things (unresolved call sites being what has been killing various DSA based passes)
llvm-svn: 28859
2006-06-19 18:23:36 +00:00
Andrew Lenharth
09948a5331 friendlier error message
llvm-svn: 27829
2006-04-19 15:33:35 +00:00
Chris Lattner
15ec384b49 Add explicit iostream #includes
llvm-svn: 25513
2006-01-22 23:19:18 +00:00
Jeff Cohen
bd51ec7461 Eliminate all remaining tabs and trailing spaces.
llvm-svn: 22523
2005-07-27 06:12:32 +00:00
Chris Lattner
bab9c90db4 Correctly handle global-argument aliases induced in main
llvm-svn: 21537
2005-04-25 19:16:31 +00:00
Misha Brukman
122d682689 Remove trailing whitespace
llvm-svn: 21416
2005-04-21 21:13:18 +00:00
Chris Lattner
9d2c6a3981 add support for taking and resolving the address of free.
llvm-svn: 21396
2005-04-21 16:09:43 +00:00
Chris Lattner
14fd1844ba 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.

llvm-svn: 20834
2005-03-25 16:45:43 +00:00
Chris Lattner
52e28abe6e remove a debugging timer.
llvm-svn: 20827
2005-03-25 00:06:09 +00:00
Chris Lattner
5d60f10a1d 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.

llvm-svn: 20826
2005-03-25 00:05:04 +00:00
Chris Lattner
32dc61b75e don't bother |'ing in 0's
llvm-svn: 20815
2005-03-24 18:42:51 +00:00
Chris Lattner
120bfecc01 Fix a crash while promoting a value out of a loop from a global variable
when using ds-aa

llvm-svn: 20802
2005-03-24 04:22:04 +00:00
Chris Lattner
03631d6bc4 a hack to allow count-aa to work with ds-aa :(
llvm-svn: 20791
2005-03-23 21:59:34 +00:00
Chris Lattner
6736ff36a1 Mark external globals incomplete in the BU Globals graph, fixing
Analysis/DSGraph/2005-03-22-IncompleteGlobal.ll

llvm-svn: 20773
2005-03-22 22:10:22 +00:00
Chris Lattner
0ed923c45a Now that the dead ctor is gone, nothing uses the old node mapping exported by
cloneInto: make it an internally used mapping.

llvm-svn: 20760
2005-03-22 00:36:51 +00:00
Chris Lattner
81a96c578c now that the second argument is always this->ReturnNodes, don't bother passing it.
llvm-svn: 20758
2005-03-22 00:29:44 +00:00
Chris Lattner
ffa612a1fd remove the second argument to cloneInto
llvm-svn: 20754
2005-03-22 00:21:05 +00:00
Chris Lattner
15ab6ab0c1 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

llvm-svn: 20740
2005-03-21 20:20:49 +00:00
Chris Lattner
715493901e remove some pointless asserts
llvm-svn: 20713
2005-03-20 04:29:39 +00:00
Chris Lattner
f61874f79a Transform BU pass to not use the horrible DSCallSiteIterator class.
llvm-svn: 20708
2005-03-20 02:42:07 +00:00
Chris Lattner
f17cd879c0 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.

llvm-svn: 20696
2005-03-19 22:23:45 +00:00
Chris Lattner
54b0239649 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.

llvm-svn: 20676
2005-03-18 23:19:47 +00:00
Chris Lattner
cece5dd244 fix crashes when we only have a prototype for main.
llvm-svn: 20627
2005-03-15 22:10:04 +00:00
Chris Lattner
f4c515e54a Start using retnodes_* for iteration.
llvm-svn: 20618
2005-03-15 16:55:04 +00:00
Chris Lattner
361e6704b4 Make sure to remove incomplete markers before we add to them! :)
llvm-svn: 20585
2005-03-13 20:32:26 +00:00
Chris Lattner
cd69084e0e After finishing BU analysis, move all global variables from the globals
graph into main and mark them complete.

llvm-svn: 20583
2005-03-13 20:15:06 +00:00
Chris Lattner
bfd643f504 IndCallGraphMap is now a pointer to a new'd map.
llvm-svn: 20065
2005-02-07 16:09:15 +00:00
Chris Lattner
43b0441ccb If we have an indirect call site that calls N functions, inline the N functions
into a temporary graph, remember it for later, then inline the tmp graph into
the call site.

In the case where there are other call sites to the same set of functions, this
permits us to just inline the temporary graph instead of all of the callees.

This turns N*M inlining situations into an N+M inlining situation.

llvm-svn: 20036
2005-02-04 19:59:49 +00:00
Chris Lattner
56e08cc9a3 Eliminate some duplicated debug code
llvm-svn: 19980
2005-02-01 21:55:40 +00:00
Chris Lattner
57cdba4154 Eliminate self-recursion as a special case.
llvm-svn: 19979
2005-02-01 21:49:43 +00:00
Chris Lattner
b35595d4c0 Eliminate use of DSCallSiteIterator in key loop. This is a half step to
a tasty speedup.

llvm-svn: 19978
2005-02-01 21:37:27 +00:00
Chris Lattner
26d4a4b2d2 Do not revisit nodes in the SCC traversal. This speeds up the BU pass a bit.
llvm-svn: 19968
2005-02-01 17:35:52 +00:00
Chris Lattner
86f89c506f Fix some scary bugs that VC++ detected.
llvm-svn: 19941
2005-01-31 00:10:45 +00:00
Chris Lattner
ee6bc42f3e * Make some methods more const correct.
* Change the FunctionCalls and AuxFunctionCalls vectors into std::lists.
  This makes many operations on these lists much more natural, and avoids
  *exteremely* expensive copying of DSCallSites (e.g. moving nodes around
  between lists, erasing a node from not the end of the vector, etc).

With a profile build of analyze, this speeds up BU DS from 25.14s to
12.59s on 176.gcc.  I expect that it would help TD even more, but I don't
have data for it.

This effectively eliminates removeIdenticalCalls and children from the
profile, going from 6.53 to 0.27s.

llvm-svn: 19939
2005-01-30 23:51:02 +00:00
Chris Lattner
f03b87704f Make -ds-aa more useful, allowing it to be updated as xforms hack on the program.
llvm-svn: 19818
2005-01-24 20:00:14 +00:00
Chris Lattner
0efef015fa Fix a bug that was preventing povray and namd from pool allocating correctly.
llvm-svn: 17632
2004-11-08 21:08:46 +00:00
Chris Lattner
8572d582cf Fix comment
llvm-svn: 17377
2004-10-31 21:54:51 +00:00
Chris Lattner
43c0372c0b 'Pass' should now not be derived from by clients. Instead, they should derive
from ModulePass.  Instead of implementing Pass::run, then should implement
ModulePass::runOnModule.

llvm-svn: 16436
2004-09-20 04:48:05 +00:00
Reid Spencer
c4abcbefb1 Changes For Bug 352
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
2004-09-01 22:55:40 +00:00
Chris Lattner
dce7977318 Headers moved
llvm-svn: 14665
2004-07-07 06:35:22 +00:00
Chris Lattner
e0c90cf983 Minor changes, remove some debugging code that got checked in somehow.
Make sure to scope the NodeMap passed into cloneInto so that it doesn't point
to nodes that are deleted.  Add some FIXME's for future performance enhancements.

llvm-svn: 12115
2004-03-04 17:05:28 +00:00
Chris Lattner
9e71c09ff5 Only clone global nodes between graphs if both graphs have the global.
llvm-svn: 11928
2004-02-27 20:05:15 +00:00
Chris Lattner
dacc6a7448 Instead of cloning the globals for main into the globals graph at the end of
BU propagation, clone the globals into the GG of EACH FUNCTION that finishes
processing!  The GlobalsGraph *must* include all globals and effects from
all functions in the program.  Fixing this makes pool allocation work better
on 175.vpr, but it still ultimately crashes.

llvm-svn: 11686
2004-02-21 00:30:28 +00:00
Chris Lattner
0f9200e5a5 There is no need to merge the globals graph into the function graphs at the
end of the BU and CBU passes.  The globals will be marked incomplete, so it
doesn't matter if they are missing some info, and merging isn't guaranteed
to bring everything in anyway!

llvm-svn: 11684
2004-02-20 23:52:15 +00:00
Chris Lattner
d9e1a49650 When we complete the bottom-up pass, make sure to merge the globals in 'main' into
the globals graph.

llvm-svn: 11562
2004-02-17 19:06:47 +00:00
Chris Lattner
cc1376078c Instead of callign removeTriviallyDeadNodes on the global graph every time
removeDeadNodes is called, only call it at the end of the pass being run.
This saves 1.3 seconds running DSA on 177.mesa (5.3->4.0s), which is
pretty big.  This is only possible because of the automatic garbage
collection done on forwarding nodes.

llvm-svn: 11178
2004-02-08 01:51:48 +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
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