55 		 * this whole chain will have to be marked as precise later  in subprog_result_precise()
65 		/* here r0->r1->r6 chain is forced to be precise and has to be  in subprog_result_precise()
139 /* here r1 is marked precise, even though it's fp register, but that's fine
186 		 * to be marked precise (with no effect on r6, though)  in global_subprog_result_precise()
193 		/* here r0 is forced to be precise and has to be  in global_subprog_result_precise()
195 		 * shouldn't go all the way to mark r6 as precise  in global_subprog_result_precise()
232 /* check that fallthrough code path marks r0 as precise */  in __flag()
236 /* check that branch code path marks r0 as precise, before failing */  in __flag()
260  * r1 and r4 are always precise for bpf_loop() calls.
312 		/* here r6 is forced to be precise and has to be propagated  in callback_result_precise()
351 		/* here r6 is forced to be precise and has to be propagated  in parent_callee_saved_reg_precise()
385 		/* here r6 is forced to be precise and has to be propagated  in parent_callee_saved_reg_precise_global()
419 /* r1, r4 are always precise for bpf_loop(),
445 		/* here r6 is forced to be precise and has to be propagated  in parent_callee_saved_reg_precise_with_callback()
495 		/* here r6 is forced to be precise and has to be propagated  in parent_stack_slot_precise()
539 		/* here r6 is forced to be precise and has to be propagated  in parent_stack_slot_precise_global()
575 /* r1, r4 are always precise for bpf_loop(),
607 		/* here r6 is forced to be precise and has to be propagated  in parent_stack_slot_precise_with_callback()
624 	return vals[x]; /* x is forced to be precise */  in subprog_with_precise_arg()
642 		 * precise, so r1->r6 will be marked precise from inside the  in subprog_arg_precise()
703 		 * r6 will be marked precise and spilled into fp-8 slot, which  in subprog_spill_into_parent_stack_slot_precise()
704 		 * also should be marked precise  in subprog_spill_into_parent_stack_slot_precise()
719 		/* here r7 is forced to be precise and has to be propagated  in subprog_spill_into_parent_stack_slot_precise()
757 		 * this whole chain will have to be marked as precise later  in stack_slot_aliases_precision()
783 		/* here r0->r1->r6 chain is forced to be precise and has to be  in stack_slot_aliases_precision()