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1317 Commits

Author SHA1 Message Date
Chris Lattner
e4d5c441e0 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-15 04:54:21 +00:00
Chris Lattner
841957ebaf Don't crash if computing a mapping to a node with zero size 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20595 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-15 04:40:24 +00:00
Chris Lattner
b0f92e3ed3 rename method, add counterpart 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20593 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-15 00:58:16 +00:00
Chris Lattner
b2b17bb65b add a method to compute a commonly used mapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20588 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-14 19:22:47 +00:00
Chris Lattner
e2bc7b2517 regardless of whether or not the client things we should mark globals incomplete, 
ALWAYS mark them incomplete if they are external!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20586 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 20:36:01 +00:00
Chris Lattner
270cf5025e Make sure to remove incomplete markers before we add to them! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20585 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 20:32:26 +00:00
Chris Lattner
b5ecd2e378 The incoming arguments to main (the argv list) are not complete! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20584 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 20:22:10 +00:00
Chris Lattner
a66e353cf9 After finishing BU analysis, move all global variables from the globals 
graph into main and mark them complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20583 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 20:15:06 +00:00
Chris Lattner
adfd5f14b4 ADd support for printing eqgraphs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20582 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 19:51:24 +00:00
Chris Lattner
2787e03d0e Replace linear search with logrithmic one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20580 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-13 19:05:05 +00:00
Chris Lattner
a4319e5826 make sure to mark nodes returned from functions as incomplete 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20576 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-12 14:58:28 +00:00
Chris Lattner
b25959a632 remove this from the PA namespace, leaving it in the llvm ns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20574 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-12 12:08:52 +00:00
Chris Lattner
7aed7179bd Move this from the pool allocator project to here, where it logically belongs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20570 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-12 11:51:30 +00:00
Chris Lattner
50bc9ef507 Fix Regression/Analysis/BasicAA/2005-03-09-BrokenBasicAA.ll, a miscompilation 
that Alkis found with Java, thanks Alkis!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20531 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-09 16:29:52 +00:00
Chris Lattner
bac5b46396 Export two methods for getting -X and A-B. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20527 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-09 05:34:41 +00:00
Chris Lattner
3267265d78 Make sure the two arguments of a setcc instruction point to the same node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20462 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-05 19:04:31 +00:00
Chris Lattner
f57cc3b7e2 Trivial cleanup patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20436 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-04 20:27:46 +00:00
Chris Lattner
f8db8a0432 Fix spelling, patch contributed by Gabor Greif 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20342 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-27 06:15:51 +00:00
Chris Lattner
7192e501eb DCE a dead function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20339 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-26 23:36:45 +00:00
Chris Lattner
7ffc07dcf7 1 + 100 + 51 == 152, not 52. 
If we fold three constants together (c1+c2+c3), make sure to keep
LHSC updated, instead of reusing (in this case), the 1 instead of the
partial sum.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20337 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-26 18:50:19 +00:00
Chris Lattner
6e84bd7d59 Handle null a bit more carefully. 
Actually teach dsa about select instructions.  This doesn't affect the
graph in any way other than not setting a spurious U marker on pointer
nodes that are selected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20324 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-25 01:27:48 +00:00
Chris Lattner
753b113cdf This instruction: 
X = gep null, ...

Used to not create a scalar map entry for X, which caused clients to barf.
This is bad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20316 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-24 19:55:31 +00:00
Chris Lattner
d7642c4f2d Fix a bug introduced by revision 1.187 of this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20308 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-24 18:48:07 +00:00
Chris Lattner
13d0108666 Remove use of bind_obj, deleter, and finegrainify namespacification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20277 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-22 23:27:21 +00:00
Chris Lattner
2352fec205 Scary typo that fixes Regression/Transforms/IndVarsSimplify/2005-02-17-TruncateExprCrash.ll 
and PR515.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20224 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-17 16:54:16 +00:00
Chris Lattner
7a0c775044 Add a sanity check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20195 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-15 18:48:48 +00:00
Chris Lattner
d672ab936f Add a new method to make it easy to update graphs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20194 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-15 18:40:55 +00:00
Chris Lattner
4dc534c7fe Correct the recursive PHI node handling routines in a way that CANNOT induce 
infinite loops (using the new replaceSymbolicValuesWithConcrete method).

This patch reverts this patch:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050131/023830.html

... which was an attempted fix for this problem.  Unfortunately, that patch
caused test/Regression/Transforms/IndVarsSimplify/exit_value_tests.llx to fail
and slightly castrated the entire analysis.  This patch fixes it right.

This patch is dedicated to jeffc, for making me deal with this.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20146 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-13 04:37:18 +00:00
Chris Lattner
6be079491f Use new edge iterators to simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20086 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-09 03:20:43 +00:00
Chris Lattner
bcc70bcb25 IndCallGraphMap is now a pointer to a new'd map. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20065 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-07 16:09:15 +00:00
Chris Lattner
86db364f02 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20036 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-04 19:59:49 +00:00
Chris Lattner
e859444a91 Split mergeInGraph into two methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20035 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-04 19:58:28 +00:00
Chris Lattner
d7be188323 Fix the Regression/Transforms/DSAnalysis/recursion.ll regression. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20031 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-04 18:58:04 +00:00
Chris Lattner
bb753c4f80 Refactor getFunctionArgumentsForCall out of mergeInGraph. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20018 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-03 18:40:25 +00:00
Chris Lattner
269dbf5f5e Eliminate some duplicated debug code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19980 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 21:55:40 +00:00
Chris Lattner
20cd136c5d Eliminate self-recursion as a special case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19979 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 21:49:43 +00:00
Chris Lattner
af8650e9c7 Eliminate use of DSCallSiteIterator in key loop. This is a half step to 
a tasty speedup.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19978 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 21:37:27 +00:00
Chris Lattner
1e759999ca Signficantly speed up printing by not emitting the same file twice with 
different names.  Large SCC's tend to be big, so this saves a lot of time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19970 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 19:10:48 +00:00
Chris Lattner
f189bcec00 Do not revisit nodes in the SCC traversal. This speeds up the BU pass a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19968 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 17:35:52 +00:00
Chris Lattner
caa7c19fb4 Fix a problem where we could infinitely recurse on phi nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19955 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 00:18:30 +00:00
Chris Lattner
f9aace20fb Rename variables to work with VC++'s hokey scoping rules. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19942 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-31 00:10:58 +00:00
Chris Lattner
cff8ac20ca Fix some scary bugs that VC++ detected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19941 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-31 00:10:45 +00:00
Chris Lattner
6538f42208 Make things more const-correct, adjust to changes in DSA interfaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19940 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 23:51:25 +00:00
Chris Lattner
a9548d9fd9 * 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19939 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 23:51:02 +00:00
Chris Lattner
3725c12b26 Due to previous simplifications, we can simplify the data structures being 
used here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19913 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 07:04:10 +00:00
Chris Lattner
ee379a16ee Properly handle volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19912 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 06:42:34 +00:00
Chris Lattner
4f16bd7a74 Remove some useless map operations. Loads/stores that are in the same 
BB as the load are not included in the Cand* sets at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19911 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 06:39:25 +00:00
Chris Lattner
15774df4d3 Before doing expensive global analysis, check to make sure the pointer is 
not invalidated on entry and on exit of the block.  This fixes some N^2
behavior in common cases, and speeds up gcc another 5% to 22.35s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19910 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 06:31:53 +00:00
Chris Lattner
e212d62a34 Minor simplification/speedup. Replaces a set lookup with a pointer comparison. 
This speeds up 176.gcc from 25.73s to 23.48s, which is 9.5%


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19907 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 06:20:55 +00:00
Chris Lattner
e233b8c64b Eliminate generality that is not buying us anything. In particular, this 
will cause us to miss cases where the input pointer to a load could be value
numbered to another load.  Something like this:


  %X = load int* %P1
  %Y = load int* %P2

Those are obviously the same if P1/P2 are the same.  The code this patch
removes attempts to handle that.  However, since GCSE iterates, this doesn't
actually buy us anything: GCSE will first replace P1 or P2 with the other
one, then the load can be value numbered as equal.

Removing this code speeds up gcse a lot.  On 176.gcc in debug mode, this
speeds up gcse from 29.08s -> 25.73s, a 13% savings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19906 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 06:11:16 +00:00
Chris Lattner
2652da6af9 If we see: 
%A = alloca int
  %V = load int* %A

value number %V to undef, not 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19905 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 05:57:01 +00:00
Chris Lattner
9cb992ab72 Remove this code as it is currently completely broken and unmaintained. 
If needed, this can be resurrected from CVS.

Note that several of the interfaces (e.g. the IPModRef ones) are supersumed
by generic AliasAnalysis interfaces that have been written since this code
was developed (and they are not DSA specific).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19864 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 06:12:46 +00:00
Chris Lattner
851b534b89 Make -ds-aa more useful, allowing it to be updated as xforms hack on the program. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19818 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 20:00:14 +00:00
Chris Lattner
507bdf9488 Silence VC++ warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19506 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:51:37 +00:00
Jeff Cohen
6e400f76e6 Apply feed back from Chris: 
1. Rename createLoaderPass to CreateProfileLoaderPass
  2. Opt shouldn't use the pass registered in CodeGen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19431 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-10 03:56:27 +00:00
Jeff Cohen
1d7b5de7ee Add last four createXxxPass functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19424 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 20:42:52 +00:00
Jeff Cohen
2611dd4448 Get lib/Analysis/DataStructure to compile with VC++ 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19412 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 04:18:28 +00:00
Jeff Cohen
534927d82d Add even more missing createXxxPass functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19402 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 22:01:16 +00:00
Misha Brukman
4d099f7d6c Wrap at 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19121 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-23 21:17:41 +00:00
Reid Spencer
1e296bf046 Try to speed up gccld hot spot in BasicVN::getEqualNumberNodes by making 
a function call at the core of the loop inline and removing unused
stack variables from an often called function. This doesn't improve things
much, the real saving will be by reducing the number of calls to this
function (100K+ when linking kimwitu++).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19119 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-23 21:13:26 +00:00
Chris Lattner
41925f87d3 Actually overload the virtual method. This fixes 
Regression/Analysis/GlobalsModRef/purecse.ll.  Isn't this what the
-Woverload-whatever flag would warn about :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19018 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-17 17:12:24 +00:00
Chris Lattner
fd4b3c4774 Eliminate a virtual method call 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18964 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-15 18:14:04 +00:00
Chris Lattner
5226f6a901 Fix a bug in -no-aa that caused two DSGraph tests to XPASS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18962 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-15 17:13:24 +00:00
Chris Lattner
0af024c5d0 Adjust to new alias analysis interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18957 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-15 07:22:13 +00:00
Alkis Evlogimenos
c49741d047 Add testcase and fix for yet another case where we query the size an 
abstract type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18678 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-08 23:56:15 +00:00
Alkis Evlogimenos
a95cf3024b Add testcase and fix for another case where we query the size an 
abstract type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18676 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-08 23:42:11 +00:00
Chris Lattner
b29dd0ff2b Move method out of line for better ICC support 
Add some ifdefs for some stuff I like to be able to toggle easily


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18665 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-08 21:03:56 +00:00
Chris Lattner
2c20ef506f Properly extern this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18664 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-08 21:00:59 +00:00
Chris Lattner
fe781654a3 Work correctly with ICC, Patch contributed by Bjørn Wennberg 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18630 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-08 16:22:26 +00:00
Reid Spencer
4a7ebfa411 For PR387:\ 
Add getModRefInfo method to avoid overloaded virtuals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18601 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-07 08:11:24 +00:00
Reid Spencer
ce9653ce44 For PR387:\ 
Make only one print method to avoid overloaded virtual warnings when \
compiled with -Woverloaded-virtual


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18589 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-07 04:03:45 +00:00
Chris Lattner
6a1a78a478 This patch prevents an infinite recursion while compiling 103.su2cor. 
All SPEC CFP 95 programs now work, though the JIT isn't loading -lf2c right
so they aren't testing correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18499 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-04 20:54:32 +00:00
Chris Lattner
eaf8f9c667 Fix DeadStoreElimination/2004-11-28-LiveStoreDeleted.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18308 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-28 20:30:15 +00:00
Chris Lattner
cc8d524a24 When merging to alias sets, if they are both must alias, the result is not 
a must alias set unless all of the pointers in the resultant set are must
aliased together.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18275 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-27 18:37:42 +00:00
Chris Lattner
07bfa52405 Add a new interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18266 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-26 21:36:25 +00:00
Chris Lattner
1ed80b66b1 When evaluating an AA, pass in size info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18264 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-26 21:05:39 +00:00
Chris Lattner
4e61676b56 The trick with globals actually works with allocas and malloc too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18262 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-26 20:01:48 +00:00
Chris Lattner
0a1ac907c3 A store or load cannot alias a global if the accessed amount is larger then 
the global.

This implements Regression/Analysis/BasicAA/global-size.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18261 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-26 19:20:01 +00:00
Chris Lattner
3fb2045c7c Mission accomplished! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17990 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-19 16:22:24 +00:00
Chris Lattner
bc2a99b480 Simplify conditional and fix LICM/2004-11-17-UndefIndexCrash.ll 
by saying what we mean


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17913 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-17 17:39:39 +00:00
Reid Spencer
e26057a376 Standardize on 'class' instead of 'struct'. Gets rid of warnings in VC++ 
Patch contributed by Jeff Cohen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17889 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-16 06:58:55 +00:00
Chris Lattner
04252fed78 Make this build in release mode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17684 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-11 22:11:17 +00:00
Chris Lattner
ac6d4854e1 Fix a bug that was preventing povray and namd from pool allocating correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17632 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-08 21:08:46 +00:00
Chris Lattner
beacefae61 Handle assert_fail special 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17631 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-08 21:08:28 +00:00
Chris Lattner
53fe2beb01 Remove dead var 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17485 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-05 04:52:08 +00:00
Chris Lattner
82962de3b9 Don't call Constant::getNullValue when the argument could be VoidTy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17457 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-03 18:51:26 +00:00
Chris Lattner
f1de30acce Graphs that are part of equivalence sets can be multi-function SCC's 
themselves.  Make sure to update DSInfo correctly.  This fixes a testcase
reduced from Prolangs-C++/objects


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17439 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 20:31:06 +00:00
Chris Lattner
caa35bc0b6 Correctly handle new SCC's found as a result of merging EQ graphs do to 
function pointer equivalences.  This fixes many problems, including a testcase
reduced Prolangs-C++/objects.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17437 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 19:29:59 +00:00
Chris Lattner
033a7d5389 Substantially cleanup/speedup the eq graphs pass by walking the callgraph 
a DSGraph at a time instead of a function at a time.  This is also more
correct, though it doesn't seem to fix any programs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17435 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 17:51:11 +00:00
Chris Lattner
983baf472f Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17428 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 06:38:58 +00:00
Chris Lattner
4457f7ea46 Remove more dead methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17413 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 21:07:05 +00:00
Chris Lattner
fcb7d950bc Rename FoldedGraph -> DSInfo to be consistent with other passes 
delete some dead methods


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17410 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 21:02:23 +00:00
Chris Lattner
77408b8987 Get rid of the EquivClassGraphArgsInfo class, and the map that held it. 
We only need one instance of the vector that it contains at a time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17407 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 20:37:00 +00:00
Chris Lattner
68f9658fcb Eliminate the cloneGraph method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17405 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 19:54:06 +00:00
Chris Lattner
31d3f671be * Do not refer to ActualCallees in CBU, when we can do it locally. 
* *DO NOT* print CBU graphs when asked to print our own.  This is just
  FREAKING confusing and misleading: it's better to not print anything.
* Simplify and clean up some code
* Add some more paranoia assertion checking code that I found to track
  down this bug:
* Fix a nasty bug that was causing us to crash on Prolangs-C++/objects,
  where we were missing processing some graphs.  This hunk is the bugfix:

-    if (!I->isExternal() && !FoldedGraphsMap.count(I))
+    if (!I->isExternal() && !ValMap.count(I))

  urg!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17386 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 23:41:26 +00:00
Chris Lattner
4bbf3dfbe6 Simplify graph traversal, improve grammar 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17383 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 23:01:34 +00:00
Chris Lattner
ab8544aa75 Do not do horrible things to the CBU graphs. In particular, we do NOT own 
the CBU graphs, copy them instead of hacking on the CBU graphs.

Also, instead of forwarding request from ECGraphs clients to the CBU graphs
clients, service them ourselves.

Finally, remove a broken "optimization"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17378 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 21:56:11 +00:00
Chris Lattner
3b7b81b814 Fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17377 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 21:54:51 +00:00
Chris Lattner
e84c23e0c1 Improve comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17375 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 19:57:43 +00:00
Chris Lattner
f498568240 Fix another bug in Prolangs-C++/objects 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17372 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 18:13:19 +00:00
Chris Lattner
113cde8685 Only call getNodeForValue on pointer arguments! this fixes a problem running 
on Prolangs-C++/objects


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17368 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 17:47:48 +00:00
Chris Lattner
7d8d4711d9 Add more paranoid assertions :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17367 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-31 17:45:40 +00:00
Chris Lattner
f1bd4b4215 Fix some more problems where we called getOffset before getNode() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17358 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-30 07:21:19 +00:00
Chris Lattner
857eb0697f Fix three bugs: 
1. Calls to external global VARIABLES should not be treated as a call to an
    external function
 2. Efficiently deleting an element from a vector by using std::swap with
    the back, then pop_back is NOT a good way to keep the vector sorted.
 3. Our hope of having stuff get deleted by making them redundant just won't
    work.  In particular, if we have three calls in sequence that should be
    merged: A, B, C   first we unify B into A.  To be sure that they appeared
    identical (so B would be erased) we set B = A.  On the next step, we
    unified C into A and set C = A.  Unfortunately, this is no guarantee that
    C = B, so we would fail to delete the dead call.  Switch to a more
    explicit scheme.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17357 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-30 05:41:23 +00:00
Chris Lattner
62c3a95051 Fix more undefined behavior 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17356 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-30 04:22:45 +00:00
Chris Lattner
6f96774fc4 * Add a method 
* change some uses of NH.getNode() in a bool context to use !NH.isNull()
* Fix a bunch of places where we depended on the (undefined) order of
  evaluation of arguments to function calls to ensure that getNode() was
  called before getOffset().  In practice, this was NOT happening.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17354 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-30 04:05:01 +00:00
Alkis Evlogimenos
002242149f Fix library name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17306 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-28 05:36:48 +00:00
Reid Spencer
6cb21d443e Change Library Names Not To Conflict With Others When Installed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-27 23:18:45 +00:00
Chris Lattner
1fca5ff62b Convert 'struct' to 'class' in various places to adhere to the coding standards 
and work better with VC++.  Patch contributed by Morten Ofstad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17281 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-27 16:14:51 +00:00
Chris Lattner
48b2f6ba2e add support for UndefValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17260 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-26 16:23:03 +00:00
Chris Lattner
219c141815 Patch to support MSVC, contributed by Morten Ofstad 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17214 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-25 18:40:08 +00:00
Reid Spencer
cac731ecbe We won't use automake 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17155 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-22 03:35:04 +00:00
Reid Spencer
86d341b204 Initial automake generated Makefile template 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17136 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-18 23:55:41 +00:00
Chris Lattner
ec7c1ab1da Add support for unreachable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17056 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-16 18:21:33 +00:00
Chris Lattner
bd1d382cc4 Add support for undef 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17055 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-16 18:19:26 +00:00
Chris Lattner
c17edbdeeb Add support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17052 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-16 18:16:19 +00:00
Chris Lattner
a35339dfb6 Be more careful about looking for constants when we really want constantint's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17029 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-16 16:07:10 +00:00
Chris Lattner
979c38ba20 Do not use the same variable name for two different variables in the 
same scope.  This confused VC++ (and probably people too!).  Patch by
Morten Ofstad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16985 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-14 14:59:16 +00:00
Reid Spencer
d96cb6eaa0 Update to reflect changes in Makefile rules. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16950 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-13 11:46:52 +00:00
Chris Lattner
15d879e139 Minor cleanups: 
* fit in 80 lines
 * Eliminate extra namespaces
 * Drop llvm::


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16935 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-12 16:52:09 +00:00
Chris Lattner
673e02b0c3 This nutty patch has been in my tree since before 1.3 went out, and it needs 
to go in.  This patch allows us to compute the trip count of loops controlled
by values loaded from constant arrays.  The cannonnical example of this is
strlen when passed a constant argument:

for (int i = 0; "constantstring"[i]; ++i) ;
return i;

In this case, it will compute that the loop executes 14 times, which means
that the exit value of i is 14.  Because of this, the loop gets DCE'd and
we are happy.  This also applies to anything that does similar things, e.g.
loops like this:

  const float Array[] = { 0.1, 2.1, 3.2, 23.21 };
  for (int i = 0; Array[i] < 20; ++i)

and is actually fairly general.

The problem with this is that it almost never triggers.  The reason is that
we run indvars and the loop optimizer only at compile time, which is before
things like strlen and strcpy have been inlined into the program from libc.
Because of this, it almost never is used (it triggers twice in specint2k).

I'm committing it because it DOES work, may be useful in the future, and
doesn't slow us down at all.  If/when we start running the loop optimizer
at link-time (-O4?) this will be very nice indeed :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16926 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-12 01:49:27 +00:00
Chris Lattner
c9b938065a Make this build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16919 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-11 20:53:28 +00:00
Chris Lattner
4a2b23e189 Fix SingleSource/Benchmarks/McGill/chomp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16912 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-11 04:07:27 +00:00
Reid Spencer
ddef0b3a6c Build both archive and relinked objects 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16892 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-10 22:17:39 +00:00
Reid Spencer
9f41a5fe85 Initial version of automake Makefile.am file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16885 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-10 20:43:57 +00:00
Chris Lattner
a1c972df7d Fix a nasty dangling pointer problem, due to a free'd pointer being left in 
a map.  This caused problems if a later object happened to be allocated at
the free'd object's address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16813 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-07 20:01:31 +00:00
Chris Lattner
157b2525f9 Dont' let null nodes sneak past cast instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16779 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 19:29:13 +00:00
Chris Lattner
b12914bfc0 '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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16436 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-20 04:48:05 +00:00
Chris Lattner
68d033cc94 Finegrainify namespacification 
'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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16434 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-20 04:44:31 +00:00
Chris Lattner
fff03c9074 Fix a nasty iterator invalidation problem I introduced yesterday. This 
unfortunately is the cause of a bunch of failures from tonight, and the
reason the tester is running so slow :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16407 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-19 19:01:06 +00:00
Chris Lattner
cd382a3725 Add CallGraphNode::removeAnyCallEdgeTo method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16398 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-18 21:34:34 +00:00
Chris Lattner
3795bc9785 When changing a function, make sure to update the CallGraphNode for the 
function, not just the CallGraph.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16388 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-18 00:27:20 +00:00
Chris Lattner
6f7e5ebb42 Implement new changeFunction method, nuke a never implemented one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16386 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-18 00:22:13 +00:00
Reid Spencer
2da5c3dda6 Convert code to compile with vc7.1. 
Patch contributed by Paolo Invernizzi. Thanks Paolo!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16368 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 17:06:42 +00:00
Chris Lattner
3080b605d7 Add some assertions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16366 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 16:59:47 +00:00
Chris Lattner
b66e648e95 Implement an AliasSetTracker::copyValue method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16344 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-14 19:15:32 +00:00
Alkis Evlogimenos
20aa474f8f Fixes to make LLVM compile with vc7.1. 
Patch contributed by Paolo Invernizzi!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16152 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-03 18:19:51 +00:00
Reid Spencer
551ccae044 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/.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-01 22:55:40 +00:00
Chris Lattner
df9b7bc090 Fix a bug that caused the pass to go into infinite loops on trivial testcases. 
This is fallout of the Bug 122 changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15811 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-16 05:38:02 +00:00
Chris Lattner
af8a42445c Add standard print/dump methods to CallGraph classes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15569 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-08 03:27:49 +00:00
Chris Lattner
f0431b0d42 Hide this option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15415 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-02 20:16:21 +00:00
Misha Brukman
47b14a4a6a Fix #includes of i*.h => Instructions.h as per PR403. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15334 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-29 17:30:56 +00:00
Misha Brukman
d8e1eea678 Fix #includes of i*.h => Instructions.h as per PR403. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15328 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-29 17:05:13 +00:00
Alkis Evlogimenos
eb62bc77b6 Merge i*.h headers into Instructions.h as part of bug403. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15325 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-29 12:17:34 +00:00
Chris Lattner
730b1ad2c4 Fix test/Regression/Analysis/BasicAA/2004-07-28-MustAliasbug.llx 
This also fixes the miscompilation of MallocBench/gs with dead store
elimination enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15324 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-29 07:56:39 +00:00
Brian Gaeke
96d4bf7aee Make the create...() functions for some of these passes return a FunctionPass *. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15276 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:43:21 +00:00
Chris Lattner
b0015c510f nuke pointless -debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15267 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 08:03:18 +00:00
Chris Lattner
105d26acb4 Fix conservative assumption, which was quite broken. Also, notice that 
functions known to not access memory (like sin/cos) don't access memory! :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15264 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 07:46:26 +00:00
Chris Lattner
63e9930498 Remove a bogus assertion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15261 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 07:22:21 +00:00
Chris Lattner
fe98f27e80 Complete rewrite of this pass to be faster, use less memory, be easier to 
understand, and more accurate to boot!  This implements
GlobalModRef/purecse.ll over the previous impl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15260 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 06:40:37 +00:00
Chris Lattner
efe30ef790 Use context-sensitive alias analysis to avoid pessimization in clients of 
AliasSetTracker (dse and licm).  This implements
DeadStoreElimination/context-sensitive.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15254 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 02:20:26 +00:00
Chris Lattner
db5b80a7f2 Make basicaa a bit more aggressive 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15252 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 02:18:52 +00:00
Chris Lattner
e181b94309 basic-aa can actually provide simple mod/ref info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15251 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 02:13:55 +00:00
Chris Lattner
05e47987ee This was implemented back in march 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15250 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 01:59:42 +00:00
Chris Lattner
61d462760b Add some new methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15230 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 05:50:23 +00:00
Chris Lattner
34a1005737 Fix a latent bug in the AliasSetTracker that was exposed by the FreeInst additions and broke a bunch of programs last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15214 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 18:32:01 +00:00
Chris Lattner
5c88260f70 Add support for free instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15197 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:57:37 +00:00
Chris Lattner
b8a31ace2c Clean up reference counting to stop "leaking" alias sets 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15099 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 07:58:18 +00:00
Brian Gaeke
7848e68c16 These files don't need to include <iostream> since they include "Support/Debug.h". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15089 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:50:33 +00:00
Chris Lattner
6d4b0d723d Add capability to remove aliasing aliassets from an AST 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15066 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 07:04:26 +00:00
Chris Lattner
12c1155403 Make the AST interface a bit richer by returning whether an insertion caused 
an insertion or not (because the pointer set already existed).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15064 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 05:18:04 +00:00
Chris Lattner
bb8f43c8fc Do not ignore casts unless they are pointer-pointer casts. This caused us 
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15062 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 03:56:54 +00:00
Reid Spencer
e840434755 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14942 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:18:30 +00:00
Chris Lattner
cb19d67907 Fix incorrect computation of mod/ref sets. Do not ask for mod/ref information 
for objects of size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14908 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 07:40:34 +00:00
Chris Lattner
ad48cc71dc Print modref information in a useful way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14907 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 06:43:20 +00:00
Chris Lattner
0e872cb470 Cleanups: fold two loops into one 
New features: -print-all-alias-modref-info option, print more info


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14906 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 06:28:49 +00:00
Chris Lattner
f99947c35f Be compatible with IA64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14864 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 00:04:13 +00:00
Chris Lattner
1ff1ff70e3 Fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14843 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:31:46 +00:00
Chris Lattner
f92791ace5 Fix for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14842 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:26:49 +00:00
Chris Lattner
ce36d55cf8 Bug fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14838 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 01:29:12 +00:00
Chris Lattner
f70770abd5 Simplify logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14825 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 20:27:12 +00:00
Chris Lattner
5ace1e4f6f Disable some code that isn't helping matters 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14682 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-08 07:25:51 +00:00
Chris Lattner
8adbec89ce Headers moved 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14665 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-07 06:35:22 +00:00
Chris Lattner
4dabb2c6f3 Move all of the DSA headers into the Analysis/DataStructure subdir. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14663 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-07 06:32:21 +00:00
Chris Lattner
eaef5685b8 Moving headers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14661 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-07 06:22:54 +00:00
Chris Lattner
efffdc9408 As much as I hate to say it, the whole setNode interface for DSNodeHandles 
is HOPELESSLY broken.  The problem is that the embedded getNode call can
change the offset of the node handle in unpredictable ways.

As it turns out, all of the clients of this method really want to set
both the node and the offset, thus it is more efficient (and less buggy)
to just do both of them in one method call.  This fixes some obscure bugs
handling non-forwarded node handles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14660 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-07 06:12:52 +00:00
Reid Spencer
954da37bb4 Add #include <iostream> since Value.h does not #include it any more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14622 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-04 12:19:56 +00:00
Chris Lattner
3b04a8ac45 Initial checkin of a simple mod/ref analysis for global variables. This is 
still overly conservative and uses very simple data structures, but it is a
start, and allows elimination of a lot of loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14462 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 06:33:13 +00:00
Chris Lattner
e6afb74188 Moved IPModRef out of the public include dir 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14455 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 00:41:23 +00:00
Chris Lattner
b88fb055c4 Move DependenceGraph.* to lib/Analysis/DataStructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14452 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 00:32:33 +00:00
Chris Lattner
2de1d32ce1 Moving to lib/Analysis/DataStructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14450 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 00:29:42 +00:00
Chris Lattner
0ecdcbe63a Move MemoryDepAnalysis.h into lib/Analysis/DataStructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14448 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 00:27:16 +00:00
Chris Lattner
71ef8f7adc Move PgmDependenceGraph.h out of the public include hierarchy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14446 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-28 00:20:04 +00:00
Chris Lattner
af754dbf65 Simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14424 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-26 19:31:26 +00:00
Chris Lattner
d28b0d73da Fix header 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14394 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-25 04:24:22 +00:00
Chris Lattner
5aa20212cc Remove distasteful method which is really part of the indvars pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14359 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-24 06:52:20 +00:00
Chris Lattner
37ec591c74 Fix merging of nodes whose incoming offset is not zero. This unbreaks DSA on 
several mallocbench programs, including perl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14342 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-23 06:29:59 +00:00
Misha Brukman
f05ff33d21 File requires IPA, moved to lib/Analysis/IPA 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14330 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-22 19:04:53 +00:00
Misha Brukman
952e38cf24 File depends on MemoryDepAnalysis (DSA); moved to lib/Analysis/DataStructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14327 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-22 18:28:37 +00:00
Misha Brukman
bab75268f0 Files depend on DSA, moved to lib/Analysis/DataStructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14326 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-22 18:13:24 +00:00
Chris Lattner
8e667cdc94 If an edge points to a field of another memory object, actually reflect this 
in the DOT visualization of the DSGraphs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14316 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-22 07:13:10 +00:00
Chris Lattner
541ad5e19e REALLY fix PR378: crash in scalar evolution analysis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14275 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-20 20:32:16 +00:00
Chris Lattner
2d58452f39 Fix a bug in my change last night that caused a few test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14270 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-20 17:01:44 +00:00
Chris Lattner
8d741b8bef Do not sort SCEV objects by address: instead sort by complexity and group 
by address.  This prevents the resultant SCEV objects from depending on
where in memory other scev objects happen to live.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14263 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-20 06:23:15 +00:00
Chris Lattner
689835a2d9 Fix a tiny bug in the -no-aa pass, in which it did not ever get a target data. 
This is a regression from 1.2, though noone uses -no-aa anyway


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14245 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-19 08:05:58 +00:00
Chris Lattner
f70c22b019 Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14201 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-17 18:19:28 +00:00
Chris Lattner
4ee623de0b isnan is dead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14191 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-15 21:52:58 +00:00
Chris Lattner
9f35196fc2 llvm.isnan doesn't access memory 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14151 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-11 06:17:13 +00:00
Chris Lattner
47c31a8248 Don't grab the condition of unconditional branches! 
This fixes PR363


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14076 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-08 21:50:30 +00:00
Chris Lattner
c7ca32b203 Add some notes so I can throw away one of my many todo lists. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14046 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-05 20:12:36 +00:00
Chris Lattner
24527fd2ae Don't send random junk to CachedWriter's. Also remove a cast that could be 
problematic when Type does not derive from Value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14022 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-04 20:25:55 +00:00
Chris Lattner
a5dcc4f7b2 Minor efficiency gain: do 1 nlogn lookup instead of two 
Code cleanup


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13875 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-28 05:36:49 +00:00
Chris Lattner
1fc3739560 Fix warnings about reaching end of non-void function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13852 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-27 20:57:01 +00:00
Vikram S. Adve
e4e97ef64d Recognize memalign and friends, and handle them specially. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13741 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-25 08:14:52 +00:00
Chris Lattner
5a24d70d99 Changes to work with the changes to the AliasAnalysis interface. The -no-aa 
class is now in the BasicAliasAnalysis.cpp file


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13684 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:15:48 +00:00
Chris Lattner
b52f440860 Move the -no-aa AA implementation into this file since both of these 
alias analysis implementations are special: they do not autoforward to a
chained implementation of alias analysis


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13683 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:15:12 +00:00
Chris Lattner
484e3027b2 Updates to work with the new auto-forwarding AA interface changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13682 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:14:27 +00:00
Chris Lattner
2412a05b80 Fix a really nasty bug with the -disable-ds-field-sensitivity option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13681 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:14:09 +00:00
Chris Lattner
1bf3408f96 Update to match the autochaining interface that the AA interface uses 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13680 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:13:51 +00:00
Chris Lattner
0f312d6998 Implement the interfaces to update value numbering information. Add an 
assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13679 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:13:24 +00:00
Chris Lattner
c43e0ae350 Rename a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13676 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:10:58 +00:00
Chris Lattner
e995a2abb3 Add a simple implementation of Andersen's interprocedural pointer analysis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13666 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 21:00:47 +00:00
Vikram S. Adve
052682f1c3 Inline both direct and indirect callees in the CBU phase because 
a direct callee may have indirect callees and so may have changed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13649 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 08:00:34 +00:00
Vikram S. Adve
c5204fb6f8 Complete rewrite of the code that merges DS graphs for equivalence classes 
of functions called at a common call site.  The rewrite inlines the
resulting graphs bottom-up on the SCCs of the CBU call graph.  It also
simplifies the merging of equivalence classes by exploiting the fact that
functions in non-trivial SCCs are already merged.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13645 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-23 07:54:02 +00:00
Chris Lattner
0555ed8bff Fine grainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13436 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-09 06:22:29 +00:00
Brian Gaeke
6178085cfd Move the stuff that fixes the size, orientation & fonts of graphs to 
the debugging functions that call "dot". These fixed settings have
various problems: for example, the fixed size that is set in the graph
traits classes is not appropriate for turning the dot file into a PNG,
and if TrueType font rendering is being used, the 'Courier' TrueType font
may not be installed. It seems easy enough to specify these things on the
command line, anyhow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13366 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-05 06:10:06 +00:00
Brian Gaeke
b171d7949d Add stub support for reading BBTraces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13352 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-04 17:11:14 +00:00
Brian Gaeke
660ef70b62 Share ProfilingType enum with the C profiling runtime libraries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13346 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-04 16:53:07 +00:00
Chris Lattner
7b11e339d2 Fix a problem with double freeing memory. For some reason, CallGraph is not 
acting like a normal pass.  :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13318 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-02 16:06:18 +00:00
Chris Lattner
224f7e65e0 Plug a minor memory leak 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13317 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-05-02 07:31:34 +00:00
Misha Brukman
96a8bd7f54 Wrapped code and comments at 80 cols; doxygenified some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13264 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-29 04:05:30 +00:00
Misha Brukman
bf94a1e22a Reorder #includes as per style guide. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13263 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-29 04:04:47 +00:00
Misha Brukman
8618e52be5 Send text and numbers directly to CachedWriter's contained ostream. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13243 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-28 18:52:43 +00:00
Chris Lattner
6ffe551f65 Changes to fix up the inst_iterator to pass to boost iterator checks. This 
patch was graciously contributed by Vladimir Prus.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13185 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-27 15:13:33 +00:00
Brian Gaeke
c6e2d8a2ff Add functions that return instances of these printer passes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13175 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-26 16:27:08 +00:00
Chris Lattner
bac7da8461 If an object is not in the scalar map then it must be a global from another 
graph.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13173 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-26 14:44:08 +00:00
Chris Lattner
b06432c276 Eliminate all of the SCEV Expansion code which is really part of the 
IndVars pass, not part of SCEV *analysis*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13134 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-23 21:29:03 +00:00
Chris Lattner
72035995d5 Pass the callgraph not the module 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13087 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-20 21:52:26 +00:00
Chris Lattner
a10df50282 Add the ability for SCC passes to initialize and finalize themselves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13084 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-20 21:30:06 +00:00
Chris Lattner
45a1cf87d4 It's not just a printer, it's actually an analysis too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13064 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-19 03:42:32 +00:00
Chris Lattner
446b86d381 Remove code to update loop depths 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13058 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-19 03:02:09 +00:00
Chris Lattner
85661d0978 Add new method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13050 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:45:27 +00:00
Chris Lattner
343c0cfa19 Fix computation of exit blocks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13047 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:21:41 +00:00
Chris Lattner
f1ab4b4eac Change the ExitBlocks list from being explicitly contained in the Loop 
structure to being dynamically computed on demand.  This makes updating
loop information MUCH easier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13045 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:14:10 +00:00
Chris Lattner
3048bd1d3e Implement method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13036 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 06:54:48 +00:00
Chris Lattner
24199db80e Add a new method, add a check missing that caused a segfault if a loop didn't 
have a canonical indvar


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13032 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 05:38:05 +00:00
Chris Lattner
3221ad0db7 Add the ability to compute exit values for complex loop using unanalyzable 
operations.  This allows us to compile this testcase:

int main() {
        int h = 1;
         do h = 3 * h + 1; while (h <= 256);
        printf("%d\n", h);
        return 0;
}

into this:

int %main() {
entry:
        call void %__main( )
        %tmp.6 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([4 x sbyte]*  %.str_1, long 0, long 0), int 364 )        ; <int> [#uses=0]
        ret int 0
}

This testcase was taken directly from 256.bzip2, believe it or not.

This code is not as general as I would like.  Next up is to refactor it
a bit to handle more cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13019 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-17 22:58:41 +00:00
Chris Lattner
7980fb9007 Add the ability to compute trip counts that are only controlled by constants 
even if the loop is using expressions that we can't compute as a closed-form.
This allows us to calculate that this function always returns 55:

int test() {
  double X;
  int Count = 0;
  for (X = 100; X > 1; X = sqrt(X), ++Count)
    /*empty*/;
  return Count;
}

And allows us to compute trip counts for loops like:

        int h = 1;
         do h = 3 * h + 1; while (h <= 256);

(which occurs in bzip2), and for this function, which occurs after inlining
and other optimizations:

int popcount()
{
   int x = 666;
  int result = 0;
  while (x != 0) {
    result = result + (x & 0x1);
    x = x >> 1;
  }
  return result;
}

We still cannot compute the exit values of result or h in the two loops above,
which means we cannot delete the loop, but we are getting closer.  Being able to
compute a constant trip count for these two loops will allow us to unroll them
completely though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13017 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-17 18:36:24 +00:00
Brian Gaeke
c598517c24 Include <cmath> for compatibility with gcc 3.0.x (the system compiler on 
Debian.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12986 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-16 15:57:32 +00:00
Chris Lattner
92020faa2c add some helpful methods. Rearrange #includes to proper order 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12960 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-15 15:16:02 +00:00
Chris Lattner
0a7f98c80d Factor a bunch of classes out into a public header 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12958 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-15 15:07:24 +00:00
Chris Lattner
0aa84fdd04 Unbreak the build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12956 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-15 14:17:43 +00:00
Chris Lattner
e9fc96e7cc Implement a FIXME: if we're going to insert a cast, we might as well only 
insert it once!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12955 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-14 22:01:22 +00:00
Chris Lattner
16011e6201 This is a trivial tweak to the addrec insertion code: insert the increment 
at the bottom of the loop instead of the top.  This reduces the number of
overlapping live ranges a lot, for example, eliminating a spill in an important
loop in 183.equake with linear scan.

I still need to make the exit comparison of the loop use the post-incremented
version of this variable, but this is an easy first step.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12952 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-14 21:11:25 +00:00
Chris Lattner
46758a894f Add some methods that are useful for updating loop information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12871 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-12 20:26:17 +00:00
Chris Lattner
b81c021f14 Change the call graph class to have TWO external nodes, making call graph 
SCC passes much more useful.  In particular, this should fix the incredibly
stupid missed inlining opportunities that the inliner suffered from.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12860 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-12 05:36:32 +00:00
Chris Lattner
7512c08bfd Hrm, operator new and new[] do not belong here. We should not CSE them! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12859 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-12 05:16:42 +00:00
Chris Lattner
bec63d606f operator new & operator new[] do not kill any legal memory locations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12833 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-11 18:16:34 +00:00
Chris Lattner
65585aa3fc Allow clients to be more efficient. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12831 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-11 16:43:07 +00:00
Chris Lattner
b903fc5c1b Add a couple of more functions that cannot access memory (the intrinsics) and 
don't write to memory


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12808 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-10 06:55:27 +00:00