Cannot handle mutiple loop tranformation within a single /@* Loop clause

[amit56r]

Refer to code spapt -> {LU,Correlation,stencil3d} anything with multiple nested loops to be transformed. The error reported is

debug output (in orio) for LU kernel:

5415
200
200
[0, 185, 183, 23, 144, 85, 68, 73, 115, 95]
{'U2_I': 1, 'U2_J': 1, 'U1_J': 1, 'RT2_J': 1, 'T2_Ia': 1, 'T2_J': 1, 'T2_I': 1, 'T2_Ja': 1, 'RT2_I': 1}
DEBUG[OptDriver]:__optimizeCodeFrag: code_frag type is NonAnn
DEBUG[OptDriver]:OptDriver line 79
DEBUG[OptDriver]:__optimizeCodeFrag: code_frag type is AnnCodeRegion
DEBUG[OptDriver]:OptDriver line 85: Loop
DEBUG[OptDriver]:OptDriver line 114, detected code annotated for tuning
DEBUG[OptDriver]:__optimizeCodeFrag: code_frag type is NonAnn
DEBUG[OptDriver]:OptDriver line 79
DEBUG[OptDriver]:about to load module.class orio.module.loop.loop.Loop corresponding to annotation Loop
DEBUG[OptDriver]:about to instantiate transformation class: orio.module.loop.loop.Loop
DEBUG[OptDriver]:successfully instantiated transformation class: orio.module.loop.loop.Loop
ERROR: orio.main.opt_driver: encountered an error during transformation _<orio.module.loop.loop.Loop instance at 0x22f9f80>:
ForStmt instance has no attribute 'name'_
File "/home/aroy/pkg/orio/bin/orcc", line 27, in
orio.main.orio_main.start(sys.argv, orio.main.orio_main.C_CPP)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/orio_main.py", line 109, in start
optimized_code_seq = odriver.optimizeCodeFrags(cfrags, True)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/opt_driver.py", line 44, in optimizeCodeFrags
cur_seq = self.__optimizeCodeFrag(cf, perf_params)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/opt_driver.py", line 118, in __optimizeCodeFrag
cfrag.cfrags)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/tuner/tuner.py", line 151, in tune
best_perf_params, best_perf_cost = search_eng.search()
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/tuner/search/search.py", line 111, in search
best_coord,best_perf,search_time,runs = self.searchBestCoord(startCoord)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/tuner/search/randomsearch/randomsearch.py", line 164, in searchBestCoord
perf_costs = self.getPerfCosts([coord])
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/tuner/search/search.py", line 254, in getPerfCosts
transformed_code_seq = self.odriver.optimizeCodeFrags(self.cfrags, perf_params)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/opt_driver.py", line 44, in optimizeCodeFrags
cur_seq = self.__optimizeCodeFrag(cf, perf_params)
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/opt_driver.py", line 196, in __optimizeCodeFrag
err('orio.main.opt_driver: encountered an error during transformation %s:\n %s' % (transformation,e))
File "/nfs2/aroy/pkg/orio/lib/python2.7/site-packages/orio/main/util/globals.py", line 314, in err
traceback.print_stack()

[brnorris03]

See example fix in a335d78, something similar has to be done for the rest of the examples that have this problem.

[amit56r]

Alternative fix: (for future reference)

• move all loops that are not being transformed outside the /*@ begin Loop Block
• Separate loops into multiple /*@ begin Loop Blocks.

i.e

/*@ begin Loop (

transform composite(...)
nested Loop1

transform composite(...)
nested Loop2

)
becomes -->

/*@ begin Loop (

transform composite(...)
nested Loop1

)

/*@ begin Loop (

transform composite(...)
nested Loop2

)