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Diffstat (limited to 'gcc/tree-ssa-loop-ivcanon.cc')
| -rw-r--r-- | gcc/tree-ssa-loop-ivcanon.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-ivcanon.cc b/gcc/tree-ssa-loop-ivcanon.cc index 9e119eb..0117dbf 100644 --- a/gcc/tree-ssa-loop-ivcanon.cc +++ b/gcc/tree-ssa-loop-ivcanon.cc @@ -906,6 +906,10 @@ try_unroll_loop_completely (class loop *loop, if (may_be_zero) bitmap_clear_bit (wont_exit, 1); + /* If loop was originally estimated to iterate too many times, + reduce the profile to avoid new profile inconsistencies. */ + scale_loop_profile (loop, profile_probability::always (), n_unroll); + if (!gimple_duplicate_loop_body_to_header_edge ( loop, loop_preheader_edge (loop), n_unroll, wont_exit, exit, &edges_to_remove, @@ -919,6 +923,8 @@ try_unroll_loop_completely (class loop *loop, free_original_copy_tables (); } + else + scale_loop_profile (loop, profile_probability::always (), 0); /* Remove the conditional from the last copy of the loop. */ if (edge_to_cancel) |