Hi Bin,
On Mon, 11 May 2020 at 14:54, Richard Biener via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > On Mon, May 11, 2020 at 7:52 AM bin.cheng via Gcc-patches > <gcc-patches@gcc.gnu.org> wrote: > > > > Hi, > > As analyzed in PR94969, data dependence analysis now misses dependence > > vector for specific case in which DRs in DDR have the same invariant access > > functions. This simple patch fixes the issue by also covering invariant > > cases. Bootstrap and test on x86_64, is it OK? > > OK. > > Thanks, > Richard. > > > Thanks, > > bin > > > > 2020-05-11 Bin Cheng <bin.ch...@linux.alibaba.com> > > > > PR tree-optimization/94969 > > * tree-data-dependence.c (constant_access_functions): Rename to... > > (invariant_access_functions): ...this. Add parameter. Check for > > invariant access function, rather than constant. > > (build_classic_dist_vector): Call above function. > > * tree-loop-distribution.c (pg_add_dependence_edges): Add comment. > > > > gcc/testsuite > > 2020-05-11 Bin Cheng <bin.ch...@linux.alibaba.com> > > > > PR tree-optimization/94969 > > * gcc.dg/tree-ssa/pr94969.c: New test. The new test fails on arm and aarch64 and probably everywhere: gcc.dg/tree-ssa/pr94969.c: dump file does not exist UNRESOLVED: gcc.dg/tree-ssa/pr94969.c scan-tree-dump-not Loop 1 distributed: split to 3 loops "ldist" Can you fix this? Thanks
