On Fri, Sep 29, 2017 at 6:18 AM, Richard Biener <rguent...@suse.de> wrote: > The idea is that we'd transform the above to > basically wrap each SCOP inside a loop that doesn't iterate. > > Does this look reasonable?
Yes, I think your solution looks good. > 2017-09-29 Richard Biener <rguent...@suse.de> > > PR tree-optimization/82355 > * graphite-isl-ast-to-gimple.c (build_iv_mapping): Also build > a mapping for the enclosing loop but avoid generating one for > the loop tree root. > (copy_bb_and_scalar_dependences): Remove premature codegen > error on PHIs in blocks duplicated into multiple places. > * graphite-scop-detection.c > (scop_detection::stmt_has_simple_data_refs_p): For a loop not > in the region use it as loop and nest to analyze the DR in. > (try_generate_gimple_bb): Likewise. > * graphite-sese-to-poly.c (extract_affine_chrec): Adjust. > (add_loop_constraints): For blocks in a loop not in the region > create a dimension with a single iteration. > * sese.h (gbb_loop_at_index): Remove assert. > > * gcc.dg/graphite/fuse-1.c: Adjust. > * gcc.dg/graphite/fuse-2.c: Likewise. > * gcc.dg/graphite/pr82355.c: New testcase. The change looks good to me. Thank you!
