ir_constant(unsigned int u, unsigned vector_elements=1);
ir_constant(int i, unsigned vector_elements=1);
ir_constant(float16_t f16, unsigned vector_elements=1);
ir_constant(unsigned int u, unsigned vector_elements=1);
ir_constant(int i, unsigned vector_elements=1);
ir_constant(float16_t f16, unsigned vector_elements=1);