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27 Commits

Author SHA1 Message Date
Tobias Grosser 7c5ba83015 ScheduleOpt: Prevectorize the innermost parallel loop 
Only prevectorize loops that are actually parallel and can
be vectorized. Take the innermost loop that is eligible.

llvm-svn: 134187
 2011-06-30 20:29:20 +00:00
Tobias Grosser c6699b7fe8 ScheduleOpt: Add first version of prevectorization 
We just strip-mine the innermost dimension by the vector width. This does not
take into account if this dimension is parallel nor if it is constant.

llvm-svn: 134186
 2011-06-30 20:29:13 +00:00
Tobias Grosser de68cc91cf ScheduleOpt: Use band forest to get the schedules 
isl introduced a new representation for the schedules it calculates. The new
representation uses a forest of bands and is closer to the structure of the
data as the old interface. Switch to the new interface, as it is nicer to use
and as the old interface will soon be removed from isl.

WARNING: This commit needs a version of isl that is more recent that the one
         included in CLooG. See:
	 http://polly.grosser.es/get_started.html#islTrunk
llvm-svn: 134181
 2011-06-30 20:01:02 +00:00
Tobias Grosser 97fb5acf48 CodeGeneration: Adapt to SCEVExpander change 
Reported-By: Sebastian Pop <sebpop@gmail.com>
llvm-svn: 134179
 2011-06-30 19:39:10 +00:00
Tobias Grosser 76747f76a0 ScheduleOptimizer: Declare functions static 
Functions that are currently only used in this file can be declared static.

Suggested by: ether

llvm-svn: 131960
 2011-05-24 12:20:07 +00:00
Tobias Grosser 4e3f9a4c5c CodeGeneration: Use FIXME instead of XXX 
Cleanup suggested by ether.

llvm-svn: 131898
 2011-05-23 15:23:36 +00:00
Tobias Grosser 5d6eb86965 CodeGeneration: Cleanup getAnalysis/addPreserved 
llvm-svn: 131360
 2011-05-14 19:02:45 +00:00
Tobias Grosser 3fdecaee2a CodeGeneration: Localize variables 
llvm-svn: 131359
 2011-05-14 19:02:39 +00:00
Tobias Grosser abb6dcd865 CodeGeneration: Admit that we change the code. 
No need to pretend anymore that we do not update the LLVM-IR.

llvm-svn: 131358
 2011-05-14 19:02:34 +00:00
Tobias Grosser 2aec339d28 Cloog: Export clast_root 
llvm-svn: 131357
 2011-05-14 19:02:29 +00:00
Tobias Grosser e91c53d2a9 CodeGeneration: No need to forget SCoP. 
As we do not delete the SCoP, there is no need to remove it from the SCoP
detection.

llvm-svn: 131356
 2011-05-14 19:02:21 +00:00
Tobias Grosser 678dbbf3b0 CodeGeneration: We do not preserve the PostDominatorTree 
llvm-svn: 131355
 2011-05-14 19:02:12 +00:00
Tobias Grosser 30aa24cd6b ScheduleOptimizer: Add an isl based schedule optimizer 
The isl based routines implement a new interpretation of the Pluto algorithm
new interpretation. This patch requires a recent version of isl to be installed.

llvm-svn: 131354
 2011-05-14 19:02:06 +00:00
Tobias Grosser 7a16c895ac CodeGeneration: Remove -polly-codegen-only 
If we only want to optimize a single function, we should extract this function
into a separate .ll file. This simplifies the code.

llvm-svn: 131353
 2011-05-14 19:01:55 +00:00
Tobias Grosser 8c4cfc327b CodeGeneration: Do not delete the old version of the Scop. 
Instead of deleting the old code, keep it on the side in an if-branch. It will
either be deleted by the dead code elimination or we can use it as fallback.

llvm-svn: 131352
 2011-05-14 19:01:49 +00:00
Tobias Grosser 76d7c529fb CodeGeneration: Support only simple regions 
llvm-svn: 131351
 2011-05-14 19:01:37 +00:00
Tobias Grosser a806606aaa ScopDetection: Move implementation of function from header to .cpp file 
llvm-svn: 131246
 2011-05-12 21:33:28 +00:00
Tobias Grosser d5a7bfc51d ScopInfo: Do not return reference to member variable 'domain'. 
Instead of returning a pointer to the domain, we return a new copy of it. This
is safer, as we do not give access to internal objects. It is also not
expensive, as isl will just increment a reference counter.

llvm-svn: 131010
 2011-05-06 19:52:19 +00:00
Tobias Grosser 69f8514cb7 Dependences: Add interface to retrieve dependences. 
llvm-svn: 131009
 2011-05-06 19:52:09 +00:00
Hongbin Zheng 94c5df16e2 ScopDetection: Remember the functions generated by backend in a pointer set, so we 
do not re-generate code for these functions.

llvm-svn: 130975
 2011-05-06 02:38:20 +00:00
Hongbin Zheng dbdebe28de Refactor: Move 'isParallelFor' from codegen backend to Dependences analysis, so other passes can also use it. 
llvm-svn: 130752
 2011-05-03 13:46:58 +00:00
Hongbin Zheng 27f3afbc1a ScopInfo: Rememeber the induction variable and its parent loop at the same thime. 
llvm-svn: 130586
 2011-04-30 03:26:51 +00:00
Hongbin Zheng ad6915685e JSON: Do not use throw when exception is disabled. 
llvm-svn: 130575
 2011-04-30 02:47:34 +00:00
Hongbin Zheng 986fee0055 JSON: Disable exception in JSON library, because exception is disable by by default. 
llvm-svn: 130574
 2011-04-30 02:30:58 +00:00
Tobias Grosser ca3bef8461 JSONExport: Some cleanups 
llvm-svn: 130481
 2011-04-29 06:52:36 +00:00
Tobias Grosser b0927ea141 JSONExporter: Remove unused variable 
llvm-svn: 130477
 2011-04-29 06:27:09 +00:00
Tobias Grosser 758053788b Add initial version of Polly 
This version is equivalent to commit ba26ebece8f5be84e9bd6315611d412af797147e
in the old git repository.

llvm-svn: 130476
 2011-04-29 06:27:02 +00:00