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6 Commits

Author SHA1 Message Date
Tobias Grosser 44f19ac3fb ScheduleOpt: Fix some bugs 
isl changed a function name, we did not properly initialize some variables
and we freed an isl_ctx object.

llvm-svn: 134448
 2011-07-05 22:15:53 +00:00
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 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 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