diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_optimize.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_optimize.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_optimize.c b/src/mesa/drivers/dri/i965/brw_optimize.c index e9bb25c81a..8aa6fb6cc6 100644 --- a/src/mesa/drivers/dri/i965/brw_optimize.c +++ b/src/mesa/drivers/dri/i965/brw_optimize.c @@ -476,9 +476,11 @@ static void brw_remove_inst(struct brw_compile *p, const GLboolean *removeInst) p->nr_insn = nr_insn; } -/* The gen code emitter generates a lot of duplications in the mrf-to-grf moves. - * Here, we monitor same mov mrf-to-grf instrutions and remove them as soon as - * none of the two operands have been written +/* The gen code emitter generates a lot of duplications in the + * grf-to-mrf moves, for example when texture sampling with the same + * coordinates from multiple textures.. Here, we monitor same mov + * grf-to-mrf instrutions and remove repeated ones where the operands + * and dst ahven't changed in between. */ void brw_remove_duplicate_mrf_moves(struct brw_compile *p) { @@ -521,7 +523,10 @@ void brw_remove_duplicate_mrf_moves(struct brw_compile *p) free(removeInst); } -void brw_remove_mrf_to_grf_moves(struct brw_compile *p) +/* Replace moves to MRFs where the value moved is the result of a + * normal arithmetic operation with computation right into the MRF. + */ +void brw_remove_grf_to_mrf_moves(struct brw_compile *p) { int i, j, prev; struct brw_context *brw = p->brw; |