Module: Mesa Branch: master Commit: be80f69ecdb5544509d762ce5c832c4ad3abbe9b URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=be80f69ecdb5544509d762ce5c832c4ad3abbe9b
Author: Matt Turner <matts...@gmail.com> Date: Fri Aug 22 14:30:38 2014 -0700 glsl: Optimize scalar all_equal/any_nequal into equal/nequal. Cuts an instruction from two shaders in Tesseract, by allowing the (x+y) cmp 0 -> x cmp -y optimization to take place. instructions in affected programs: 1198 -> 1194 (-0.33%) Reviewed-by: Eric Anholt <e...@anholt.net> --- src/glsl/opt_algebraic.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp index 430f5cb..c4f883b 100644 --- a/src/glsl/opt_algebraic.cpp +++ b/src/glsl/opt_algebraic.cpp @@ -584,6 +584,16 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) } break; + case ir_binop_all_equal: + case ir_binop_any_nequal: + if (ir->operands[0]->type->is_scalar() && + ir->operands[1]->type->is_scalar()) + return new(mem_ctx) ir_expression(ir->operation == ir_binop_all_equal + ? ir_binop_equal : ir_binop_nequal, + ir->operands[0], + ir->operands[1]); + break; + case ir_binop_rshift: case ir_binop_lshift: /* 0 >> x == 0 */ _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-commit