ocaml-base-compiler 4.05.0

type label = Cmm.label

N.B. Backends vary in their treatment of call gc and checkbound points. If the positioning of any labels associated with these is important for some new feature in the compiler, the relevant backends' behaviour should be checked.

type integer_comparison =

| Isigned of Cmm.comparison
| Iunsigned of Cmm.comparison

type integer_operation =

| Iadd
| Isub
| Imul
| Imulh
| Idiv
| Imod
| Iand
| Ior
| Ixor
| Ilsl
| Ilsr
| Iasr
| Icomp of integer_comparison
| Icheckbound of {
1. label_after_error : label option;
2. spacetime_index : int;
}
(*
For Spacetime only, Icheckbound operations take two arguments, the second being the pointer to the trie node for the current function (and the first being as per non-Spacetime mode).
*)

type test =

| Itruetest
| Ifalsetest
| Iinttest of integer_comparison
| Iinttest_imm of integer_comparison * int
| Ifloattest of Cmm.comparison * bool
| Ioddtest
| Ieventest

type operation =

| Imove
| Ispill
| Ireload
| Iconst_int of nativeint
| Iconst_float of int64
| Iconst_symbol of string
| Icall_ind of {
1. label_after : label;
}
| Icall_imm of {
1. func : string;
2. label_after : label;
}
| Itailcall_ind of {
1. label_after : label;
}
| Itailcall_imm of {
1. func : string;
2. label_after : label;
}
| Iextcall of {
1. func : string;
2. alloc : bool;
3. label_after : label;
}
| Istackoffset of int
| Iload of Cmm.memory_chunk * Arch.addressing_mode
| Istore of Cmm.memory_chunk * Arch.addressing_mode * bool
| Ialloc of {
1. words : int;
2. label_after_call_gc : label option;
3. spacetime_index : int;
}
(*
For Spacetime only, Ialloc instructions take one argument, being the pointer to the trie node for the current function.
*)
| Iintop of integer_operation
| Iintop_imm of integer_operation * int
| Inegf
| Iabsf
| Iaddf
| Isubf
| Imulf
| Idivf
| Ifloatofint
| Iintoffloat
| Ispecific of Arch.specific_operation

type instruction = {

desc : instruction_desc;
next : instruction;
arg : Reg.t array;
res : Reg.t array;
dbg : Debuginfo.t;
mutable live : Reg.Set.t;

}

and instruction_desc =

| Iend
| Iop of operation
| Ireturn
| Iifthenelse of test * instruction * instruction
| Iswitch of int array * instruction array
| Iloop of instruction
| Icatch of Cmm.rec_flag * (int * instruction) list * instruction
| Iexit of int
| Itrywith of instruction * instruction
| Iraise of Cmm.raise_kind

type spacetime_part_of_shape =

| Direct_call_point of {
1. callee : string;
}
| Indirect_call_point
| Allocation_point

type spacetime_shape = (spacetime_part_of_shape * Cmm.label) list

A description of the layout of a Spacetime profiling node associated with a given function. Each call and allocation point instrumented within the function is marked with a label in the code and assigned a place within the node. This information is stored within the executable and extracted when the user saves a profile. The aim is to minimise runtime memory usage within the nodes and increase performance.

type fundecl = {

fun_name : string;
fun_args : Reg.t array;
fun_body : instruction;
fun_fast : bool;
fun_dbg : Debuginfo.t;
fun_spacetime_shape : spacetime_shape option;

}

val dummy_instr : instruction

val end_instr : unit -> instruction

val instr_cons : 
  instruction_desc ->
  Reg.t array ->
  Reg.t array ->
  instruction ->
  instruction

val instr_cons_debug : 
  instruction_desc ->
  Reg.t array ->
  Reg.t array ->
  Debuginfo.t ->
  instruction ->
  instruction

val instr_iter : (instruction -> unit) -> instruction -> unit

val spacetime_node_hole_pointer_is_live_before : instruction -> bool

package ocaml-base-compiler