Module: Mesa Branch: master Commit: 4b7bca897984d7d0cbe2d51d4a5919dcc7702a41 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4b7bca897984d7d0cbe2d51d4a5919dcc7702a41
Author: Matt Turner <[email protected]> Date: Tue Mar 25 15:43:21 2014 -0700 i965/fs: Emit load_payload instead of multiple MOVs for large VGRFs. --- src/mesa/drivers/dri/i965/brw_fs_cse.cpp | 33 +++++++++++++++++++----------- 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp index 920bfee..abaf688 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp @@ -188,15 +188,20 @@ fs_visitor::opt_cse_local(bblock_t *block, exec_list *aeb) entry->tmp = tmp; entry->generator->dst = tmp; - for (int i = 0; i < written; i++) { - fs_inst *copy = MOV(orig_dst, tmp); + fs_inst *copy; + if (written > 1) { + fs_reg *sources = ralloc_array(mem_ctx, fs_reg, written); + for (int i = 0; i < written; i++) { + sources[i] = tmp; + sources[i].reg_offset = i; + } + copy = LOAD_PAYLOAD(orig_dst, sources, written); + } else { + copy = MOV(orig_dst, tmp); copy->force_writemask_all = entry->generator->force_writemask_all; - entry->generator->insert_after(copy); - - orig_dst.reg_offset++; - tmp.reg_offset++; } + entry->generator->insert_after(copy); } /* dest <- temp */ @@ -206,15 +211,19 @@ fs_visitor::opt_cse_local(bblock_t *block, exec_list *aeb) assert(inst->dst.type == entry->tmp.type); fs_reg dst = inst->dst; fs_reg tmp = entry->tmp; - fs_inst *copy = NULL; - for (int i = 0; i < written; i++) { + fs_inst *copy; + if (written > 1) { + fs_reg *sources = ralloc_array(mem_ctx, fs_reg, written); + for (int i = 0; i < written; i++) { + sources[i] = tmp; + sources[i].reg_offset = i; + } + copy = LOAD_PAYLOAD(dst, sources, written); + } else { copy = MOV(dst, tmp); copy->force_writemask_all = inst->force_writemask_all; - inst->insert_before(copy); - - dst.reg_offset++; - tmp.reg_offset++; } + inst->insert_before(copy); } /* Set our iterator so that next time through the loop inst->next _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
