diff options
| -rw-r--r-- | src/glsl/lower_mat_op_to_vec.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/glsl/lower_mat_op_to_vec.cpp b/src/glsl/lower_mat_op_to_vec.cpp index fe89802b086..9d593f9dd0e 100644 --- a/src/glsl/lower_mat_op_to_vec.cpp +++ b/src/glsl/lower_mat_op_to_vec.cpp @@ -329,7 +329,18 @@ ir_mat_op_to_vec_visitor::visit_leave(ir_assignment *orig_assign) */ for (i = 0; i < orig_expr->get_num_operands(); i++) { ir_assignment *assign; + ir_dereference *deref = orig_expr->operands[i]->as_dereference(); + /* Avoid making a temporary if we don't need to to avoid aliasing. */ + if (deref && + deref->variable_referenced() != result->variable_referenced()) { + op[i] = deref; + continue; + } + + /* Otherwise, store the operand in a temporary generally if it's + * not a dereference. + */ ir_variable *var = new(mem_ctx) ir_variable(orig_expr->operands[i]->type, "mat_op_to_vec", ir_var_temporary); |