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209 Commits

Author SHA1 Message Date
Chris Lattner
3280f7bd55 Move isLoopInvariant to the Loop class 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13051 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:46:08 +00:00
Chris Lattner
5fa802fe27 Loop exit sets are no longer explicitly held, they are dynamically computed on demand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13046 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-18 22:15:13 +00:00
Chris Lattner
118dd0ce3d Implement LICM of calls in simple cases. This is sufficient to move around 
sin/cos/strlen calls and stuff.  This implements:
  LICM/call_sink_pure_function.ll
  LICM/call_sink_const_function.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12415 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 04:11:30 +00:00
Chris Lattner
529429224c Update comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 20:09:22 +00:00
Chris Lattner
329c1c6c94 Improve encapsulation in the Loop and LoopInfo classes by eliminating the 
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-08 00:09:44 +00:00
Chris Lattner
a3df8a964a Remove the wierd "Operands" loop, by traversing basicblocks in reverse order 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c Implement LICM/sink_multiple.ll, by sinking all possible instructions in the 
loop before hoisting any.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 07:22:45 +00:00
Chris Lattner
ba7df4c482 When we delete instructions from the loop, make sure to remove them from the 
AliasSetTracker as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-18 08:12:32 +00:00
Chris Lattner
00ad4a2d17 Do not promote volatile alias sets into registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-14 04:52:31 +00:00
Chris Lattner
ea9403f2aa Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10409 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-11 22:23:32 +00:00
Chris Lattner
7d3ced934f Fix bug: LICM/sink_multiple_exits.ll 
Thanks for pointing this out John  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10387 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 22:35:56 +00:00
Chris Lattner
df45bd3803 Don't allow dead instructions to stop sinking early. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10386 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 20:43:29 +00:00
Chris Lattner
e3cfe8d563 Simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10371 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:58:24 +00:00
Chris Lattner
f594a03197 Avoid performing two identical lookups when one will suffice 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:57:24 +00:00
Chris Lattner
0ed2da9ac7 Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10369 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 15:56:24 +00:00
Chris Lattner
a2706518f9 Implement instruction sinking out of loops. This still can do a little bit 
better job, but this is the majority of the work.  This implements
LICM/sink*.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10358 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 06:41:05 +00:00
Chris Lattner
ed6dfc2856 Refactor code a little bit, eliminating the gratuitous InstVisitor, which 
should make subsequent changes simpler.  This also allows us to hoist vaarg
and vanext instructions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10342 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 19:32:44 +00:00
Chris Lattner
92094b4d92 Fine grainify namespacification 
Code cleanups
Make LICM::SafeToHoist marginally more efficient


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10341 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 17:18:00 +00:00
Brian Gaeke
d0fde30ce8 Put all LLVM code into the llvm namespace, as per bug 109. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-11 22:41:34 +00:00
Misha Brukman
ed1f7c81aa Declare FunctionPasses as such so that they can be used in FunctionPassManager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9768 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-07 17:20:18 +00:00
John Criswell
b576c94c15 Added LLVM project notice to the top of every C++ source file. 
Header files will be on the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-20 19:43:21 +00:00
Chris Lattner
4a650af599 Wrap code at 80 columns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9073 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 05:04:27 +00:00
Chris Lattner
98bf436e2e Rename loop preheaders pass to loop simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9061 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-12 21:52:28 +00:00
Misha Brukman
cf00c4ab3b Fix spelling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9027 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-10 17:57:28 +00:00
Chris Lattner
43f820d1f7 Change the interface to PromoteMemToReg to also take a DominatorTree 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8883 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 21:20:13 +00:00
Chris Lattner
c444a4228f Renamed DominatorTree::Node::getNode() -> getBlock() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8469 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 16:26:13 +00:00
Misha Brukman
352361b409 Spell `definite' correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8467 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 15:32:37 +00:00
Chris Lattner
065a616ada Fix spell-o's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8431 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 05:29:43 +00:00
Chris Lattner
61c1e7e32d Do not hoist volatile loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8399 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-08 18:17:14 +00:00
Tanya Lattner
11a49a722f Fixed minor bug in SafeToHoist and made some changes suggested by Chris. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7614 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 20:39:02 +00:00
Tanya Lattner
9966c03aad Fixed LICM bug that hoists trapping instructions that are not guaranteed to execute. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7612 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 18:45:46 +00:00
Chris Lattner
6806f5614d DEBUG got moved to Support/Debug.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7492 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-01 22:15:03 +00:00
Chris Lattner
e408e25132 Remove unnecesary &*'s 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5872 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:37:45 +00:00
Chris Lattner
0252e49f6d Convert LICM over to use AliasSetTracker. Besides being nicer, this automatically 
allows LICM to use access sizes to help alias analysis be more precise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5693 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-03 23:32:45 +00:00
Chris Lattner
fb743a937f Change the mem2reg interface to accept a TargetData argument 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5685 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-03 17:25:18 +00:00
Chris Lattner
caadc93f7b Fix bug: LICM/2003-02-28-PromoteDifferentType.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5675 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-28 19:21:40 +00:00
Chris Lattner
8601a9bf54 Fix bug: 2003-02-27-StoreSinkPHIs.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5658 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-27 21:59:36 +00:00
Chris Lattner
2d0a4a4eb8 Convert to work with new AliasAnalysis interface by conservatively assuming all pointers are arbitrarily large accesses 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5636 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-26 19:28:57 +00:00
Chris Lattner
2e6e741b73 Initial implementation of Loop invariant memory->scalar promotion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5613 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-24 03:52:32 +00:00
Chris Lattner
cb2610ea03 - Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to 
setPreservesCFG to be less confusing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4255 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-10-21 20:00:28 +00:00
Chris Lattner
a92f696b74 Updates to work with recent Statistic's changes: 
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4002 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-10-01 22:38:41 +00:00
Chris Lattner
b461373fbc Fix bug in LICM that caused the previous big win. :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3980 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-29 22:26:07 +00:00
Chris Lattner
952eaee239 Hoist the contents of Loops in depth first order in the dominator tree, 
rather than in random order.  This causes LICM to be DRAMATICALLY more
effective. For example, on bzip2.c, it is able to hoist 302 loads and
2380 total instructions, as opposed to 44/338 before.  This  obviously
makes other transformations much more powerful as well!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3978 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-29 21:46:09 +00:00
Chris Lattner
99a57216a9 - Further cleanups of LICM pass, remove extra work from previous implementation 
- Do not clone instructions then insert clone outside of loop.  Just move them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3951 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-26 19:40:25 +00:00
Chris Lattner
94170596b7 Improve comments, doxygenize more 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3950 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-26 16:52:07 +00:00
Chris Lattner
9646e6b6af Clean up LICM significantly now that it is guaranteed to have loop preheaders 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3947 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-26 16:38:03 +00:00
Chris Lattner
eb53ae4f2d Loop invariant code motion now depends on the LoopPreheader pass. Dead code 
has not yet been removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3945 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-26 16:19:31 +00:00
Chris Lattner
1d608abbc0 Clean up code due to auto-insert constructors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3665 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-09-10 22:38:47 +00:00
Chris Lattner
24ea74eb9a Load & StoreInst no longer derive from MemAccessInst, so we don't have 
to handle indexing anymore


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3485 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 22:49:05 +00:00
Chris Lattner
f5e84aa088 Add capability of using pointer analysis to LICM 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3478 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 21:39:55 +00:00