Hi Fellows,
Is there an LLVM pass that does the unification of natural loop
exits? I.e., when multiple exits are detected in a natural loop, a unified
BB will be inserted to join all the old exiting edges etc. My goal is to
make multiple-exit natural loops more recognizable to RegionInfo class.
Thanks.
Best Regards,
Paul
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On 2/21/14, 4:07 PM, Paul Vario wrote:> Hi Fellows, > > Is there an LLVM pass that does the unification of natural loop > exits? I.e., when multiple exits are detected in a natural loop, a > unified BB will be inserted to join all the old exiting edges etc. My > goal is to make multiple-exit natural loops more recognizable to > RegionInfo class. Thanks. > > > Best Regards, > Paul-mergereturn does this, but for functions. Maybe it could point you in the right direction? http://llvm.org/docs/Passes.html#mergereturn-unify-function-exit-nodes Cheers, Jevin
On 2/21/14, 4:07 PM, Paul Vario wrote:> Hi Fellows, > > Is there an LLVM pass that does the unification of natural loop > exits? I.e., when multiple exits are detected in a natural loop, a > unified BB will be inserted to join all the old exiting edges etc. My > goal is to make multiple-exit natural loops more recognizable to > RegionInfo class. Thanks. > > > Best Regards, > Paul -mergereturn does this, but for functions. Maybe it could point you in the right direction? http://llvm.org/docs/Passes.html#mergereturn-unify-function-exit-nodes Cheers, Jevin