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2012 May 14
0
[LLVMdev] SIV tests in LoopDependence Analysis, Sanjoy's patch
...ent mechanisms. At Tera, we did regression tests by using command-line flags to provoke particular passes to dump so-called signature information to stderr. For example, -trace:PAR_SIG would cause the parallelizer to dump out a condensed account of what it did for each loop nest. Similarly, -trace:LS_SIG would cause the loop scheduler (i.e., software pipeliner) to dump a summary for each inner loop. As part of each night's tests, we'd compare the signatures against standards and report differences. Later, we developed a tool called "Canal" that took essentially the same informati...
2012 May 14
2
[LLVMdev] SIV tests in LoopDependence Analysis, Sanjoy's patch
On Mon, 14 May 2012 13:54:19 -0700 Preston Briggs <preston.briggs at gmail.com> wrote: > On Mon, May 14, 2012 at 1:30 PM, Hal Finkel <hfinkel at anl.gov> wrote: > > > Can you explain this comment: > > > With minor algebra, this test can also be used for things like > > > [c1 + a1*i + a2*j][c2]. > > It's really too simple to deserve mention...