On Wed, Jun 28, 2017 at 11:32 AM, Bin Cheng <bin.ch...@arm.com> wrote: > Hi, > This patch picks up a missed-optimization case in loop niter analysis. With > this > patch, niters information for loop as in added test can be analyzed. > Bootstrap > and test on x86_64 and AArch64. Is it OK?
+ provided that either below condition is satisfied: + + a) the test is NE_EXP; NE_EXPR + b) iv0.step - iv1.step is positive integer. Ok with that change. Thanks, Richard. > Thanks, > bin > 2017-06-27 Bin Cheng <bin.ch...@arm.com> > > PR tree-optimization/81196 > * tree-ssa-loop-niter.c (number_of_iterations_cond): Handle loop > exit condition comparing two IVs. > > gcc/testsuite/ChangeLog > 2017-06-27 Bin Cheng <bin.ch...@arm.com> > > PR tree-optimization/81196 > * gcc.dg/vect/pr81196.c: New.
