From: Jose Maria Casanova Crespo Date: Sat, 9 Jun 2018 09:46:01 +0000 (+0200) Subject: intel/fs: Use shuffle_from_32bit_read for 64-bit gs_input_load X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=152bffb69bdb13e63a9112ddab78dc86855d9687;p=mesa.git intel/fs: Use shuffle_from_32bit_read for 64-bit gs_input_load This implementation avoids two unneeded MOVs for each 64-bit component. One was done in the old shuffle, to avoid cases of src/dst overlap but this is not the case. And the removed MOV was already being being done in the shuffle. Copy propagation wasn't able to remove them because shuffle destination values are defined with partial writes because they have stride == 2. v2: Reword commit log summary (Jason Ekstrand) Reviewed-by: Jason Ekstrand --- diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp index 81c26321ed2..f45e123cc1b 100644 --- a/src/intel/compiler/brw_fs_nir.cpp +++ b/src/intel/compiler/brw_fs_nir.cpp @@ -2305,11 +2305,11 @@ fs_visitor::emit_gs_input_load(const fs_reg &dst, } if (type_sz(dst.type) == 8) { - shuffle_32bit_load_result_to_64bit_data( - bld, tmp_dst, retype(tmp_dst, BRW_REGISTER_TYPE_F), num_components); - - for (unsigned c = 0; c < num_components; c++) - bld.MOV(offset(dst, bld, iter * 2 + c), offset(tmp_dst, bld, c)); + shuffle_from_32bit_read(bld, + offset(dst, bld, iter * 2), + retype(tmp_dst, BRW_REGISTER_TYPE_D), + 0, + num_components); } if (num_iterations > 1) {