diff options
Diffstat (limited to 'src/glsl/opt_algebraic.cpp')
| -rw-r--r-- | src/glsl/opt_algebraic.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp index 2e33dfe..a07e153 100644 --- a/src/glsl/opt_algebraic.cpp +++ b/src/glsl/opt_algebraic.cpp @@ -346,6 +346,16 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) } break; + case ir_binop_rshift: + case ir_binop_lshift: + /* 0 >> x == 0 */ + if (is_vec_zero(op_const[0])) + return ir->operands[0]; + /* x >> 0 == x */ + if (is_vec_zero(op_const[1])) + return ir->operands[0]; + break; + case ir_binop_logic_and: /* FINISHME: Also simplify (a && a) to (a). */ if (is_vec_one(op_const[0])) { |