Module: Mesa Branch: master Commit: dd3c16c94b52e2af3bbb3f7de4f68b71e3caafe2 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=dd3c16c94b52e2af3bbb3f7de4f68b71e3caafe2
Author: Matt Turner <[email protected]> Date: Tue Dec 1 17:09:55 2015 -0800 glsl_to_tgsi: Skip useless comparison instructions. Reviewed-by: Ilia Mirkin <[email protected]> --- src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index 40c7725..b6a0e6b 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -1655,7 +1655,13 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir) st_dst_reg temp_dst = st_dst_reg(temp); st_src_reg temp1 = st_src_reg(temp), temp2 = st_src_reg(temp); - emit_asm(ir, TGSI_OPCODE_SEQ, st_dst_reg(temp), op[0], op[1]); + if (ir->operands[0]->type->is_boolean() && + ir->operands[1]->as_constant() && + ir->operands[1]->as_constant()->is_one()) { + emit_asm(ir, TGSI_OPCODE_MOV, st_dst_reg(temp), op[0]); + } else { + emit_asm(ir, TGSI_OPCODE_SEQ, st_dst_reg(temp), op[0], op[1]); + } /* Emit 1-3 AND operations to combine the SEQ results. */ switch (ir->operands[0]->type->vector_elements) { @@ -1708,7 +1714,13 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir) st_src_reg temp = get_temp(native_integers ? glsl_type::uvec4_type : glsl_type::vec4_type); - emit_asm(ir, TGSI_OPCODE_SNE, st_dst_reg(temp), op[0], op[1]); + if (ir->operands[0]->type->is_boolean() && + ir->operands[1]->as_constant() && + ir->operands[1]->as_constant()->is_zero()) { + emit_asm(ir, TGSI_OPCODE_MOV, st_dst_reg(temp), op[0]); + } else { + emit_asm(ir, TGSI_OPCODE_SNE, st_dst_reg(temp), op[0], op[1]); + } if (native_integers) { st_dst_reg temp_dst = st_dst_reg(temp); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
