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1239 Commits

Author SHA1 Message Date
Chris Lattner
a5ed1bd00b add support for taking and resolving the address of free. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21396 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 16:09:43 +00:00
Chris Lattner
af2e3e0859 Fix a crash analyzing MultiSource/Benchmarks/MallocBench/gs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21245 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-12 03:59:27 +00:00
Chris Lattner
6128690c62 Don't make this require loopsimplify. It works BETTER with loop simplify 
but should not require it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21123 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-06 21:45:00 +00:00
Chris Lattner
bd135c7706 do not crash when using -debug 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21092 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-05 01:12:03 +00:00
Chris Lattner
8a9763c3cd do not dereference an extra layer of pointers to determine if an external 
call can modify a memory location.  This fixes
test/Regression/Analysis/Andersens/modreftest.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21088 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-04 22:23:21 +00:00
Chris Lattner
1231aa3fa6 fix some VC compilation problems, thanks to Jeff C for pointing this out! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21044 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-02 20:17:09 +00:00
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