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| author | Andrew Hsieh <andrewhsieh@google.com> | 2014-09-03 15:53:59 +0000 |
|---|---|---|
| committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2014-09-03 15:54:00 +0000 |
| commit | 54737a0f41ce0bf1e8f7f8d6d8e3170ef51e07c2 (patch) | |
| tree | afd56565c7170158a14ce5c2fa2a1c8752cf5cb2 /gcc-4.9/gcc/tree-vect-stmts.c | |
| parent | ecf187208f8ec68c49823080179fa1b5f448a35d (diff) | |
| parent | 55f9fbb03d0413cb8fe74e5ec5d6c2dd4280933e (diff) | |
| download | toolchain_gcc-54737a0f41ce0bf1e8f7f8d6d8e3170ef51e07c2.tar.gz toolchain_gcc-54737a0f41ce0bf1e8f7f8d6d8e3170ef51e07c2.tar.bz2 toolchain_gcc-54737a0f41ce0bf1e8f7f8d6d8e3170ef51e07c2.zip | |
Merge "[4.8, 4.9] Backport of additional SLM tuning."
Diffstat (limited to 'gcc-4.9/gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc-4.9/gcc/tree-vect-stmts.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc-4.9/gcc/tree-vect-stmts.c b/gcc-4.9/gcc/tree-vect-stmts.c index 1a51d6d7b..b87c14345 100644 --- a/gcc-4.9/gcc/tree-vect-stmts.c +++ b/gcc-4.9/gcc/tree-vect-stmts.c @@ -1091,10 +1091,11 @@ vect_model_load_cost (stmt_vec_info stmt_info, int ncopies, include the cost of the permutes. */ if (!load_lanes_p && group_size > 1) { - /* Uses an even and odd extract operations for each needed permute. */ - int nstmts = ncopies * exact_log2 (group_size) * group_size; - inside_cost += record_stmt_cost (body_cost_vec, nstmts, vec_perm, - stmt_info, 0, vect_body); + /* Uses an even and odd extract operations or shuffle operations + for each needed permute. */ + int nstmts = ncopies * ceil_log2 (group_size) * group_size; + inside_cost = record_stmt_cost (body_cost_vec, nstmts, vec_perm, + stmt_info, 0, vect_body); if (dump_enabled_p ()) dump_printf_loc (MSG_NOTE, vect_location, |