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75 Commits

Author SHA1 Message Date
Andrew Lenharth cf52eb2b99 prevent va_arg from being hoisted from a loop 
llvm-svn: 22265
 2005-06-20 13:36:33 +00:00
Andrew Lenharth 9144ec4764 core changes for varargs 
llvm-svn: 22254
 2005-06-18 18:34:52 +00:00
Misha Brukman b1c9317bb4 Remove trailing whitespace 
llvm-svn: 21427
 2005-04-21 23:48:37 +00:00
Chris Lattner faf7791fea Fix a bug where LICM was not updating AA information properly when sinking 
a pointer value out of a loop causing it to be duplicated.

llvm-svn: 20828
 2005-03-25 00:22:36 +00:00
Chris Lattner 1c790bf656 enable -debug-only=licm 
llvm-svn: 20788
 2005-03-23 21:00:12 +00:00
Chris Lattner b17f3e13ec Adjust to new interfaces 
llvm-svn: 18958
 2004-12-15 07:22:25 +00:00
Chris Lattner 6e455608e2 Allow hoisting loads of globals and alloca's in conditionals. 
llvm-svn: 18363
 2004-11-29 21:26:12 +00:00
Chris Lattner b137409926 Provide size information when checking to see if we can LICM a load, this 
allows us to hoist more loads in some cases.

llvm-svn: 18265
 2004-11-26 21:20:09 +00:00
Chris Lattner f11216d24f Fix a bug in the previous checkin that broke 255.vortex 
llvm-svn: 16355
 2004-09-15 02:34:40 +00:00
Chris Lattner a346578d92 Make sure to update alias analysis information as we transform the function. 
This fixes PR420 and Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx

llvm-svn: 16348
 2004-09-15 01:04:07 +00:00
Reid Spencer 7c16caa336 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/.

llvm-svn: 16137
 2004-09-01 22:55:40 +00:00
Chris Lattner 50eb771d37 Fix hoisting of void typed values, e.g. calls 
llvm-svn: 15263
 2004-07-27 07:38:32 +00:00
Chris Lattner 42ad646104 Now that dominator tree children are built in determinstic order, this horrible code 
can go away

llvm-svn: 14254
 2004-06-19 20:23:35 +00:00
Chris Lattner ec2d34cc19 Fix one source of nondeterminism in the -licm pass: the hoist pass 
was processing blocks in whatever order they happened to end up in the
dominator tree data structure.  Force an ordering.

llvm-svn: 14248
 2004-06-19 08:56:43 +00:00
Brian Gaeke 661963c63f Fix typo in DEBUG printout. 
llvm-svn: 14196
 2004-06-17 07:26:52 +00:00
Chris Lattner 289ba2ac4d Adjust to the changes in the AliasSetTracker interface 
llvm-svn: 13690
 2004-05-23 21:20:19 +00:00
Chris Lattner fc44a25bcb Move isLoopInvariant to the Loop class 
llvm-svn: 13051
 2004-04-18 22:46:08 +00:00
Chris Lattner 35eaa55cfc Loop exit sets are no longer explicitly held, they are dynamically computed on demand. 
llvm-svn: 13046
 2004-04-18 22:15:13 +00:00
Chris Lattner 20cda2645e 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

llvm-svn: 12415
 2004-03-15 04:11:30 +00:00
Chris Lattner cacd30b957 Update comment 
llvm-svn: 11082
 2004-02-02 20:09:22 +00:00
Chris Lattner 59d2d7fc33 Improve encapsulation in the Loop and LoopInfo classes by eliminating the 
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.

llvm-svn: 10714
 2004-01-08 00:09:44 +00:00
Chris Lattner 918460190f Remove the wierd "Operands" loop, by traversing basicblocks in reverse order 
llvm-svn: 10536
 2003-12-19 08:18:16 +00:00
Chris Lattner 547192d688 Implement LICM/sink_multiple.ll, by sinking all possible instructions in the 
loop before hoisting any.

llvm-svn: 10534
 2003-12-19 07:22:45 +00:00
Chris Lattner 9e2b42a0c8 When we delete instructions from the loop, make sure to remove them from the 
AliasSetTracker as well.

llvm-svn: 10507
 2003-12-18 08:12:32 +00:00
Chris Lattner d1c371c32c Do not promote volatile alias sets into registers 
llvm-svn: 10458
 2003-12-14 04:52:31 +00:00
Chris Lattner 34399dda2d Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe. 
llvm-svn: 10409
 2003-12-11 22:23:32 +00:00
Chris Lattner 6281fd3ead Fix bug: LICM/sink_multiple_exits.ll 
Thanks for pointing this out John  :)

llvm-svn: 10387
 2003-12-10 22:35:56 +00:00
Chris Lattner 55c2113b7b Don't allow dead instructions to stop sinking early. 
llvm-svn: 10386
 2003-12-10 20:43:29 +00:00
Chris Lattner 6364314a6e Simplify code 
llvm-svn: 10371
 2003-12-10 16:58:24 +00:00
Chris Lattner 48b4b852b4 Avoid performing two identical lookups when one will suffice 
llvm-svn: 10370
 2003-12-10 16:57:24 +00:00
Chris Lattner edda1af35a 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 
llvm-svn: 10369
 2003-12-10 15:56:24 +00:00
Chris Lattner aaaea51090 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

llvm-svn: 10358
 2003-12-10 06:41:05 +00:00
Chris Lattner 65c1193d55 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

llvm-svn: 10342
 2003-12-09 19:32:44 +00:00
Chris Lattner c05176843e Fine grainify namespacification 
Code cleanups
Make LICM::SafeToHoist marginally more efficient

llvm-svn: 10341
 2003-12-09 17:18:00 +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
Misha Brukman ad03afcb34 Declare FunctionPasses as such so that they can be used in FunctionPassManager. 
llvm-svn: 9768
 2003-11-07 17:20:18 +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 178957028b Wrap code at 80 columns 
llvm-svn: 9073
 2003-10-13 05:04:27 +00:00
Chris Lattner 72272a70b8 Rename loop preheaders pass to loop simplify 
llvm-svn: 9061
 2003-10-12 21:52:28 +00:00
Misha Brukman 8b2bd4ed47 Fix spelling. 
llvm-svn: 9027
 2003-10-10 17:57:28 +00:00
Chris Lattner a906bacfdd Change the interface to PromoteMemToReg to also take a DominatorTree 
llvm-svn: 8883
 2003-10-05 21:20:13 +00:00
Chris Lattner bb9d03b9c0 Renamed DominatorTree::Node::getNode() -> getBlock() 
llvm-svn: 8469
 2003-09-11 16:26:13 +00:00
Misha Brukman 9b8d339f6e Spell `definite' correctly. 
llvm-svn: 8467
 2003-09-11 15:32:37 +00:00
Chris Lattner 216c7b8aed Fix spell-o's 
llvm-svn: 8431
 2003-09-10 05:29:43 +00:00
Chris Lattner 01a8391236 Do not hoist volatile loads 
llvm-svn: 8399
 2003-09-08 18:17:14 +00:00
Tanya Lattner dc3c9a8545 Fixed minor bug in SafeToHoist and made some changes suggested by Chris. 
llvm-svn: 7614
 2003-08-05 20:39:02 +00:00
Tanya Lattner 57c03df032 Fixed LICM bug that hoists trapping instructions that are not guaranteed to execute. 
llvm-svn: 7612
 2003-08-05 18:45:46 +00:00
Chris Lattner 8abcd56c74 DEBUG got moved to Support/Debug.h 
llvm-svn: 7492
 2003-08-01 22:15:03 +00:00
Chris Lattner 889f620841 Remove unnecesary &*'s 
llvm-svn: 5872
 2003-04-23 16:37:45 +00:00
Chris Lattner 0592bb7654 Convert LICM over to use AliasSetTracker. Besides being nicer, this automatically 
allows LICM to use access sizes to help alias analysis be more precise.

llvm-svn: 5693
 2003-03-03 23:32:45 +00:00