diff options
| author | Kenneth Graunke <[email protected]> | 2013-08-09 18:36:54 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2013-08-19 11:29:24 -0700 |
| commit | f06826cece7ad6348c93760e473e5a35ad872431 (patch) | |
| tree | 657aacb62980f70e679903540f2baf21a74194c8 | |
| parent | a291c59bbae7d9d96487a984f81a298a1fd71389 (diff) | |
i965/fs: Use the COPY set in the calculation for liveout.
According to page 360 of the textbook, the proper formula for liveout
is:
CPout(n) = COPY(i) union (CPin(i) - KILL(i))
Previously, we omitted COPY.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp index 0078c871c5d..9ffb64deb85 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp @@ -188,7 +188,8 @@ fs_copy_prop_dataflow::run() for (int i = 0; i < bitset_words; i++) { const BITSET_WORD old_liveout = bd[b].liveout[i]; - bd[b].liveout[i] |= bd[b].livein[i] & ~bd[b].kill[i]; + bd[b].liveout[i] |= + bd[b].copy[i] | (bd[b].livein[i] & ~bd[b].kill[i]); if (old_liveout != bd[b].liveout[i]) progress = true; |