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131 Commits

Author SHA1 Message Date
Chris Lattner 24bba4d237 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.

llvm-svn: 18275
 2004-11-27 18:37:42 +00:00
Chris Lattner eeaa29c377 Add a new interface 
llvm-svn: 18266
 2004-11-26 21:36:25 +00:00
Chris Lattner 303bdd1e4b Remove dead var 
llvm-svn: 17485
 2004-11-05 04:52:08 +00:00
Chris Lattner 6fa9665095 Add some assertions 
llvm-svn: 16366
 2004-09-15 16:59:47 +00:00
Chris Lattner ab64481f1d Implement an AliasSetTracker::copyValue method 
llvm-svn: 16344
 2004-09-14 19:15:32 +00:00
Misha Brukman 63b38bd2ed Fix #includes of i*.h => Instructions.h as per PR403. 
llvm-svn: 15334
 2004-07-29 17:30:56 +00:00
Chris Lattner 731381dc0e Remove a bogus assertion 
llvm-svn: 15261
 2004-07-27 07:22:21 +00:00
Chris Lattner 9b323c3521 Use context-sensitive alias analysis to avoid pessimization in clients of 
AliasSetTracker (dse and licm).  This implements
DeadStoreElimination/context-sensitive.llx

llvm-svn: 15254
 2004-07-27 02:20:26 +00:00
Chris Lattner bf8c3c405e Add some new methods 
llvm-svn: 15230
 2004-07-26 05:50:23 +00:00
Chris Lattner 0c73a1ff05 Fix a latent bug in the AliasSetTracker that was exposed by the FreeInst additions and broke a bunch of programs last night. 
llvm-svn: 15214
 2004-07-25 18:32:01 +00:00
Chris Lattner 924c68dcb2 Add support for free instructions 
llvm-svn: 15197
 2004-07-25 07:57:37 +00:00
Chris Lattner 053427ff4f Clean up reference counting to stop "leaking" alias sets 
llvm-svn: 15099
 2004-07-22 07:58:18 +00:00
Chris Lattner abc4f4523f Add capability to remove aliasing aliassets from an AST 
llvm-svn: 15066
 2004-07-21 07:04:26 +00:00
Chris Lattner 2cfaef23e4 Make the AST interface a bit richer by returning whether an insertion caused 
an insertion or not (because the pointer set already existed).

llvm-svn: 15064
 2004-07-21 05:18:04 +00:00
Reid Spencer eb04d9bcb4 Add #include <iostream> since Value.h does not #include it any more. 
llvm-svn: 14622
 2004-07-04 12:19:56 +00:00
Chris Lattner 746e1e1808 Rename a method 
llvm-svn: 13676
 2004-05-23 21:10:58 +00:00
Chris Lattner 2d3a7a6ff0 Changes to fix up the inst_iterator to pass to boost iterator checks. This 
patch was graciously contributed by Vladimir Prus.

llvm-svn: 13185
 2004-04-27 15:13:33 +00:00
Chris Lattner 3022b1bc2c Fix a HORRIBLY NASTY bug that caused siod to stop working last night. 
llvm-svn: 12479
 2004-03-17 23:22:04 +00:00
Chris Lattner 7f04ebc858 Ok, the assertion was bogus. Calls that do not read/write memory should not 
have an alias set, just like adds and subtracts don't.

llvm-svn: 12422
 2004-03-15 06:28:07 +00:00
Chris Lattner f5c8f4cea6 This assertion is bogus now that calls do not necessarily read/write memory 
llvm-svn: 12421
 2004-03-15 06:24:15 +00:00
Chris Lattner 21c60f1549 Don't be COMPLETELY pessimistic in the face of function calls 
llvm-svn: 12413
 2004-03-15 04:08:36 +00:00
Chris Lattner 44fea5416d Add a new AliassetTracker::remove method. Because we need to be able to remove 
a pointer from an AliasSet, maintain the pointer values on a doubly linked
list instead of a singly linked list, to permit efficient removal from the
middle of the list.

llvm-svn: 10506
 2003-12-18 08:11:56 +00:00
Chris Lattner 0a14060ce2 Finegrainify namespacification 
Add capability to represent volatile AliasSet's
Propagate this information from loads&stores into the aliassets

llvm-svn: 10457
 2003-12-14 04:52:11 +00:00
Brian Gaeke 960707c335 Put all LLVM code into the llvm namespace, as per bug 109. 
llvm-svn: 9903
 2003-11-11 22:41:34 +00:00
John Criswell 482202a601 Added LLVM project notice to the top of every C++ source file. 
Header files will be on the way.

llvm-svn: 9298
 2003-10-20 19:43:21 +00:00
Chris Lattner d14c200425 Fix miscompilation in Fhourstones and bug: LICM/2003-05-02-LoadHoist.ll 
llvm-svn: 5994
 2003-05-03 03:42:08 +00:00
Chris Lattner c048bb3add ADd two new 'add' methods 
llvm-svn: 5691
 2003-03-03 23:28:05 +00:00
Chris Lattner b5b0b7a934 Make the aliassettracker much more precise by actually tracking size 
information for various accesses.  What a concept.

llvm-svn: 5647
 2003-02-26 22:11:00 +00:00
Chris Lattner 71b82bb494 Convert to work with new AliasAnalysis interface by conservatively assuming all pointers are arbitrarily large accesses 
llvm-svn: 5636
 2003-02-26 19:28:57 +00:00
Chris Lattner 7606fb65c0 This is a substantial rewrite of the AliasSetTracker class which now uses 
a union-find based algorithm, is significantly faster, and is more general.
It will also scale to handle call instructions correctly, which is a nice
added bonus.

This includes a new pass -print-alias-sets which can be used to show how
alias sets are formed for a particular analysis.

llvm-svn: 5619
 2003-02-24 20:37:56 +00:00
Chris Lattner 647df647e1 First try at implementing the AliasSetTracker class. I'm sure it will need 
revision as I start to use it though.

llvm-svn: 3954
 2002-09-26 21:49:07 +00:00