diff options
| author | Iago Toral Quiroga <[email protected]> | 2014-05-07 09:58:43 +0200 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2014-05-13 22:33:59 -0700 |
| commit | 520dfa4b5c64a09bb34c7e912b102fb99aef7699 (patch) | |
| tree | 84d429039ff26a3a037cf02265d029bd6bee7592 /src/mesa/drivers/dri/i965/brw_shader.h | |
| parent | 0c0bbe77d0f92acf34c4582207b9def2e2fe308d (diff) | |
i965: Relax accumulator dependency scheduling on Gen < 6
Many instructions implicitly update the accumulator on Gen < 6. The instruction
scheduling code just calls add_barrier_deps() for each accumulator access on
these platforms, but a large class of operations don't actually update the
accumulator -- mostly move and logical instructions. Teaching the scheduling
code about this would allow more flexibility to schedule instructions.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77740
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_shader.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_shader.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_shader.h b/src/mesa/drivers/dri/i965/brw_shader.h index e730ed02b18..5ae4092ac87 100644 --- a/src/mesa/drivers/dri/i965/brw_shader.h +++ b/src/mesa/drivers/dri/i965/brw_shader.h @@ -48,6 +48,7 @@ public: bool can_do_source_mods() const; bool can_do_saturate() const; bool reads_accumulator_implicitly() const; + bool writes_accumulator_implicitly(int gen) const; /** * True if the instruction has side effects other than writing to |