747eee2707
Don't make this require loopsimplify. It works BETTER with loop simplify
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but should not require it.
llvm-svn: 21123
2005-04-06 21:45:00 +00:00
7e0a534cba
do not crash when using -debug
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llvm-svn: 21092
2005-04-05 01:12:03 +00:00
b919b21777
do not dereference an extra layer of pointers to determine if an external
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call can modify a memory location. This fixes
test/Regression/Analysis/Andersens/modreftest.ll
llvm-svn: 21088
2005-04-04 22:23:21 +00:00
d2df8ca403
fix some VC compilation problems, thanks to Jeff C for pointing this out!
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llvm-svn: 21044
2005-04-02 20:17:09 +00:00
a7913e66e1
EquivClassGraphs is now in DataStructure.h
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llvm-svn: 21042
2005-04-02 20:08:17 +00:00
526cc17b55
use a callee_iterator typedef.
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llvm-svn: 21038
2005-04-02 20:02:41 +00:00
990ed1d201
Change the ActualCallees callgraph from hash_multimap<Instruction,Function>
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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.
llvm-svn: 21031
2005-04-02 19:17:18 +00:00
af4d93cd39
import all of the rest of the stubs that dsa uses for direct comparison
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llvm-svn: 20932
2005-03-29 20:36:05 +00:00
4dba2ee974
learn about some more functions.
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llvm-svn: 20929
2005-03-29 20:04:24 +00:00
2e1971c19d
Fix a problem where we not marking incoming arguments to functions with
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external linkage as incomplete.
llvm-svn: 20927
2005-03-29 19:16:59 +00:00
8de8b7bf40
there is no point comparing against null pointer.
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llvm-svn: 20925
2005-03-29 17:44:52 +00:00
ca85130b0a
Fix a major problem with global variable initializers. This could cause
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us to have stuff pointing to the null pointer, which makes no sense
(the null ptr is an ssa value, not the null object)
llvm-svn: 20922
2005-03-29 17:21:53 +00:00
dd94b2d01e
add some more functions, ignore setcc for constraints!
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llvm-svn: 20917
2005-03-29 06:52:20 +00:00
7617e886c1
Handle "known" external calls context sensitively, add support for realloc
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and a couple of other functions that are important.
Handle aggregate undef values for gv initializers
llvm-svn: 20914
2005-03-29 06:09:07 +00:00
81b6d86a3a
Teach andersens that non-escaping memory cannot be mod/ref'd by external fn calls.
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llvm-svn: 20891
2005-03-28 06:21:17 +00:00
009585d2ac
Fix grammar
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llvm-svn: 20890
2005-03-28 04:32:12 +00:00
a8ad8b2826
Make anders-aa much more precise by not being completely pessimistic about
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external functions. Teach it about a few important ones.
llvm-svn: 20889
2005-03-28 04:03:52 +00:00
147f8b789c
wrap some long lines
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llvm-svn: 20884
2005-03-27 22:03:46 +00:00
2db10ba297
remove ...
...
llvm-svn: 20883
2005-03-27 21:57:09 +00:00
f290da862d
speed up steens by using spliceFrom, improve its precision by realizing that
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an incomplete node cannot alias a complete node.
llvm-svn: 20882
2005-03-27 21:56:55 +00:00
ea69f1f9e8
teach andersens about undef
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llvm-svn: 20881
2005-03-27 18:58:23 +00:00
82166467c3
Don't give up completely, maybe other AA can say something about this.
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llvm-svn: 20873
2005-03-27 00:02:33 +00:00
3f08e7899f
Factor out percentage printing into its own function. Make two changes to
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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)
llvm-svn: 20872
2005-03-26 23:56:33 +00:00
2ba37389c9
Cache mapping information for a call site after computing it for a mod/ref
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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
llvm-svn: 20871
2005-03-26 23:29:03 +00:00
139f43b340
Remove more long dead code: dsa doesn't provide must alias info
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llvm-svn: 20870
2005-03-26 22:54:46 +00:00
1a02d15dab
remove some unsafe code that has long been dead
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llvm-svn: 20869
2005-03-26 22:48:42 +00:00
9cc932d3b3
slightly improve mod/ref for DSAA by checking the globals graph for fallback
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llvm-svn: 20868
2005-03-26 22:47:03 +00:00
b3baff1830
Teach steens-aa two things about mod/ref information:
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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.
llvm-svn: 20867
2005-03-26 22:43:20 +00:00
68ee8f572c
Interchange this loop so that we test all pointers against one call site
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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.
llvm-svn: 20866
2005-03-26 22:16:44 +00:00
d21e220035
no really, don't double count these nodes either!
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llvm-svn: 20837
2005-03-25 20:54:45 +00:00
b7ffd50537
Don't count all of the nodes in the SCC once for each function in the SCC.
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llvm-svn: 20836
2005-03-25 20:37:32 +00:00
5ecec08ab5
Grow the EQ classes for globals at the end of the BU pass. This shrinks
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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
8d9f3735cd
Treat free operations as volatile, since they cannot be moved. This fixes
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Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll
llvm-svn: 20830
2005-03-25 05:49:37 +00:00
3322e28f75
remove a debugging timer.
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llvm-svn: 20827
2005-03-25 00:06:09 +00:00
278bac843c
Two changes here:
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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
a396eb8ae9
Make the spliceFrom case where one graph is completely empty be constant time.
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llvm-svn: 20825
2005-03-25 00:02:41 +00:00
127dd12427
add a new DSGraph::spliceFrom method, which violently takes the content of
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one graph and plops it into another, without breaking a sweat.
llvm-svn: 20824
2005-03-24 23:46:04 +00:00
301764e28c
This replaces the correct but slow code with a more aggressive scc-finder
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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 :)
llvm-svn: 20820
2005-03-24 23:06:02 +00:00
1b5b559011
only look at successors of globals. This gets us down to "only" 22s in the
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bu pass for 176.gcc
llvm-svn: 20818
2005-03-24 21:17:27 +00:00
189d7bb9ee
Unfortunately, a previous patch was not safe. Revert it, reimplement
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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
llvm-svn: 20817
2005-03-24 21:07:47 +00:00
923d925953
don't bother |'ing in 0's
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llvm-svn: 20815
2005-03-24 18:42:51 +00:00
ba6006d84b
be more aggressive about incompleteness marking
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llvm-svn: 20814
2005-03-24 18:42:28 +00:00
19d7f2883d
Fix a crash while promoting a value out of a loop from a global variable
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when using ds-aa
llvm-svn: 20802
2005-03-24 04:22:04 +00:00
f0d919ece9
teach ds-aa about mod/ref for external function calls.
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llvm-svn: 20801
2005-03-24 03:04:50 +00:00
aff85ac552
Simplify dead code into a fixme :)
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llvm-svn: 20800
2005-03-24 02:41:19 +00:00
85a1d92323
fix a compiler crash in runtime/libprofile
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llvm-svn: 20799
2005-03-24 01:22:52 +00:00
6a3f5fd623
wrap a long line
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llvm-svn: 20797
2005-03-23 23:51:12 +00:00
2a7358064e
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
llvm-svn: 20796
2005-03-23 23:49:47 +00:00
8424b0f82e
Make this more efficient by only making one virtual method call.
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llvm-svn: 20793
2005-03-23 23:26:58 +00:00
07eac1e698
Make this a bit more aggressive
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llvm-svn: 20792
2005-03-23 22:06:41 +00:00
Chris Lattner