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Commit 0bc5b0f9 authored by Léo Gourdin's avatar Léo Gourdin
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printer and freg bugfix

parent 30fb0f14
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aarch64/PeepholeOracle.ml
View file @ 0bc5b0f9
......@@ -64,6 +64,7 @@ let is_valid_str64 b1 b2 n1 n2 =
else false
let dreg_of_ireg r = IR (RR1 r)
let dreg_of_freg r = FR r
(* Return true if an intermediate
* affectation eliminates the potential
......@@ -85,6 +86,28 @@ let verify_store_affect reg rs b rev =
let b = IR b in
dreg_eq reg b || dreg_eq reg rs
type ph_type =
| P32
| P32f
| P64
| P64f
type inst_type =
| Ldr of ph_type
| Str of ph_type
let ph_ty_to_string = function
| Ldr P32 -> "ldr32"
| Ldr P32f -> "ldr32f"
| Ldr P64 -> "ldr64"
| Ldr P64f -> "ldr64f"
| Str P32 -> "str32"
| Str P32f -> "str32f"
| Str P64 -> "str64"
| Str P64f -> "str64f"
let print_ph_ty chan v = output_string chan (ph_ty_to_string v)
(* Affect a symbolic memory list of potential replacements
* for a given write in reg *)
let rec affect_symb_mem reg insta pot_rep stype rev =
......@@ -92,11 +115,11 @@ let rec affect_symb_mem reg insta pot_rep stype rev =
| [] -> []
| h0 :: t0 -> (
match (insta.(h0), stype) with
| PLoad (PLd_rd_a (_, rd, ADimm (b, n))), "ldr" ->
| PLoad (PLd_rd_a (_, rd, ADimm (b, n))), Ldr _ ->
if verify_load_affect reg rd b rev then
affect_symb_mem reg insta t0 stype rev
else h0 :: affect_symb_mem reg insta t0 stype rev
| PStore (PSt_rs_a (_, rs, ADimm (b, n))), "str" ->
| PStore (PSt_rs_a (_, rs, ADimm (b, n))), Str _ ->
if verify_store_affect reg rs b rev then
affect_symb_mem reg insta t0 stype rev
else h0 :: affect_symb_mem reg insta t0 stype rev
......@@ -110,11 +133,11 @@ let rec read_symb_mem reg insta pot_rep stype rev =
| [] -> []
| h0 :: t0 -> (
match (insta.(h0), stype) with
| PLoad (PLd_rd_a (_, rd, ADimm (b, n))), "ldr" ->
| PLoad (PLd_rd_a (_, rd, ADimm (b, n))), Ldr _ ->
if verify_load_read reg rd b rev then
read_symb_mem reg insta t0 stype rev
else h0 :: read_symb_mem reg insta t0 stype rev
| PStore (PSt_rs_a (_, rs, ADimm (b, n))), "str" ->
| PStore (PSt_rs_a (_, rs, ADimm (b, n))), Str _ ->
h0 :: read_symb_mem reg insta t0 stype rev
| _, _ -> failwith "read_symb_mem: Found an inconsistent inst in pot_rep")
......@@ -194,7 +217,8 @@ let update_pot_rep_basic inst insta pot_rep stype rev =
pot_rep := read_symb_mem rs1 insta !pot_rep stype rev
| Pcset (rd, _) ->
pot_rep := affect_symb_mem (dreg_of_ireg rd) insta !pot_rep stype rev
| Pfmovi (_, _, rs) -> (
| Pfmovi (_, rd, rs) -> (
pot_rep := affect_symb_mem (dreg_of_freg rd) insta !pot_rep stype rev;
match rs with
| RR0 rs ->
pot_rep :=
......@@ -204,12 +228,15 @@ let update_pot_rep_basic inst insta pot_rep stype rev =
pot_rep := affect_symb_mem rd insta !pot_rep stype rev;
pot_rep := read_symb_mem rs1 insta !pot_rep stype rev;
pot_rep := read_symb_mem rs2 insta !pot_rep stype rev
| Pfnmul (_, rd, rs1, rs2) -> ())
| Pfnmul (_, rd, rs1, rs2) ->
pot_rep := affect_symb_mem (dreg_of_freg rd) insta !pot_rep stype rev;
pot_rep := read_symb_mem (dreg_of_freg rs1) insta !pot_rep stype rev;
pot_rep := read_symb_mem (dreg_of_freg rs2) insta !pot_rep stype rev)
| PLoad i -> (
(* Here, we consider a different behavior for load and store potential candidates:
* a load does not obviously cancel the ldp candidates, but it does for any stp candidate. *)
match stype with
| "ldr" -> (
| Ldr _ -> (
match i with
| PLd_rd_a (_, rd, a) ->
pot_rep := affect_symb_mem rd insta !pot_rep stype rev;
......@@ -225,7 +252,7 @@ let update_pot_rep_basic inst insta pot_rep stype rev =
(* Here, we consider that a store cancel all ldp candidates, but it is far more complicated for stp ones :
* if we cancel stp candidates here, we would prevent ourselves to apply the non-consec store peephole.
* To solve this issue, the store candidates cleaning is managed directly in the peephole function below. *)
match stype with "ldr" -> pot_rep := [] | _ -> ())
match stype with Ldr _ -> pot_rep := [] | _ -> ())
| Pallocframe (_, _) -> pot_rep := []
| Pfreeframe (_, _) -> pot_rep := []
| Ploadsymbol (rd, _) ->
......@@ -288,30 +315,30 @@ let are_compat_store (sti1 : store_rs_a) (sti2 : store_rs_a) =
| Pstrd | Pstrd_a -> ( match sti2 with Pstrd | Pstrd_a -> true | _ -> false)
| _ -> false
let get_load_string (ldi : load_rd_a) =
let get_load_pht (ldi : load_rd_a) =
match ldi with
| Pldrw | Pldrw_a -> "ldr32"
| Pldrs -> "ldr32f"
| Pldrx | Pldrx_a -> "ldr64"
| Pldrd | Pldrd_a -> "ldr64f"
| Pldrw | Pldrw_a -> Ldr P32
| Pldrs -> Ldr P32f
| Pldrx | Pldrx_a -> Ldr P64
| Pldrd | Pldrd_a -> Ldr P64f
| _ -> failwith "get_load_string: Found a non compatible load to translate"
let get_store_string (sti : store_rs_a) =
let get_store_pht (sti : store_rs_a) =
match sti with
| Pstrw | Pstrw_a -> "str32"
| Pstrs -> "str32f"
| Pstrx | Pstrx_a -> "str64"
| Pstrd | Pstrd_a -> "str64f"
| Pstrw | Pstrw_a -> Str P32
| Pstrs -> Str P32f
| Pstrx | Pstrx_a -> Str P64
| Pstrd | Pstrd_a -> Str P64f
| _ -> failwith "get_store_string: Found a non compatible store to translate"
let is_valid_ldr rd1 rd2 b1 b2 n1 n2 stype =
match stype with
| "ldr32" | "ldr32f" -> is_valid_ldr32 rd1 rd2 b1 b2 n1 n2
| Ldr P32 | Ldr P32f -> is_valid_ldr32 rd1 rd2 b1 b2 n1 n2
| _ -> is_valid_ldr64 rd1 rd2 b1 b2 n1 n2
let is_valid_str b1 b2 n1 n2 stype =
match stype with
| "str32" | "str32f" -> is_valid_str32 b1 b2 n1 n2
| Str P32 | Str P32f -> is_valid_str32 b1 b2 n1 n2
| _ -> is_valid_str64 b1 b2 n1 n2
(* Try to find the index of the first previous compatible
......@@ -368,14 +395,14 @@ let pair_rep_inv insta =
let h0 = insta.(i) in
let h1 = insta.(i - 1) in
(* Here we need to update every symbolic memory according to the matched inst *)
update_pot_rep_basic h0 insta pot_ldrw_rep "ldr" true;
update_pot_rep_basic h0 insta pot_ldrx_rep "ldr" true;
update_pot_rep_basic h0 insta pot_ldrs_rep "ldr" true;
update_pot_rep_basic h0 insta pot_ldrd_rep "ldr" true;
update_pot_rep_basic h0 insta pot_strw_rep "str" true;
update_pot_rep_basic h0 insta pot_strx_rep "str" true;
update_pot_rep_basic h0 insta pot_strs_rep "str" true;
update_pot_rep_basic h0 insta pot_strd_rep "str" true;
update_pot_rep_basic h0 insta pot_ldrw_rep (Ldr P32) true;
update_pot_rep_basic h0 insta pot_ldrx_rep (Ldr P64) true;
update_pot_rep_basic h0 insta pot_ldrs_rep (Ldr P32f) true;
update_pot_rep_basic h0 insta pot_ldrd_rep (Ldr P64f) true;
update_pot_rep_basic h0 insta pot_strw_rep (Str P32) true;
update_pot_rep_basic h0 insta pot_strx_rep (Str P64) true;
update_pot_rep_basic h0 insta pot_strs_rep (Str P32f) true;
update_pot_rep_basic h0 insta pot_strd_rep (Str P64f) true;
match (h0, h1) with
(* Non-consecutive ldr *)
| PLoad (PLd_rd_a (ldi, rd1, ADimm (b1, n1))), _ -> (
......@@ -388,9 +415,9 @@ let pair_rep_inv insta =
| _ -> pot_ldrd_rep
in
(* Search a previous compatible load *)
let ld_string = get_load_string ldi in
let ld_t = get_load_pht ldi in
match
search_compat_rep_inv rd1 b1 n1 insta !pot_rep ld_string
search_compat_rep_inv rd1 b1 n1 insta !pot_rep ld_t
with
(* If we can't find a candidate, add the current load as a potential future one *)
| None -> pot_rep := i :: !pot_rep
......@@ -401,13 +428,13 @@ let pair_rep_inv insta =
pot_rep := List.filter filt !pot_rep;
insta.(rep) <- Pnop;
if min_is_rev n n1 then (
if debug then eprintf "LDP_BACK_SPACED_PEEP_IMM_INC_%s\n" ld_string;
if debug then eprintf "LDP_BACK_SPACED_PEEP_IMM_INC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
(trans_ldi ldi, r, rd1, c, chunk_load ldi, ADimm (b, n))))
else (
if debug then eprintf "LDP_BACK_SPACED_PEEP_IMM_DEC_%s\n" ld_string;
if debug then eprintf "LDP_BACK_SPACED_PEEP_IMM_DEC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
......@@ -424,9 +451,9 @@ let pair_rep_inv insta =
| _ -> pot_strd_rep
in
(* Search a previous compatible store *)
let st_string = get_store_string sti in
let st_t = get_store_pht sti in
match
search_compat_rep_inv rd1 b1 n1 insta !pot_rep st_string
search_compat_rep_inv rd1 b1 n1 insta !pot_rep st_t
with
(* If we can't find a candidate, clean and add the current store as a potential future one *)
| None ->
......@@ -441,7 +468,7 @@ let pair_rep_inv insta =
let filt x = x != rep in
pot_rep := List.filter filt !pot_rep;
insta.(rep) <- Pnop;
if debug then eprintf "STP_BACK_SPACED_PEEP_IMM_INC_%s\n" st_string;
if debug then eprintf "STP_BACK_SPACED_PEEP_IMM_INC_%a\n" print_ph_ty st_t;
insta.(i) <-
PStore
(Pstp
......@@ -475,23 +502,23 @@ let pair_rep insta =
let h0 = insta.(i) in
let h1 = insta.(i + 1) in
(* Here we need to update every symbolic memory according to the matched inst *)
update_pot_rep_basic h0 insta pot_ldrw_rep "ldr" false;
update_pot_rep_basic h0 insta pot_ldrx_rep "ldr" false;
update_pot_rep_basic h0 insta pot_ldrs_rep "ldr" false;
update_pot_rep_basic h0 insta pot_ldrd_rep "ldr" false;
update_pot_rep_basic h0 insta pot_strw_rep "str" false;
update_pot_rep_basic h0 insta pot_strx_rep "str" false;
update_pot_rep_basic h0 insta pot_strs_rep "str" false;
update_pot_rep_basic h0 insta pot_strd_rep "str" false;
update_pot_rep_basic h0 insta pot_ldrw_rep (Ldr P32) true;
update_pot_rep_basic h0 insta pot_ldrx_rep (Ldr P64) true;
update_pot_rep_basic h0 insta pot_ldrs_rep (Ldr P32f) true;
update_pot_rep_basic h0 insta pot_ldrd_rep (Ldr P64f) true;
update_pot_rep_basic h0 insta pot_strw_rep (Str P32) true;
update_pot_rep_basic h0 insta pot_strx_rep (Str P64) true;
update_pot_rep_basic h0 insta pot_strs_rep (Str P32f) true;
update_pot_rep_basic h0 insta pot_strd_rep (Str P64f) true;
match (h0, h1) with
(* Consecutive ldr *)
| ( PLoad (PLd_rd_a (ldi1, rd1, ADimm (b1, n1))),
PLoad (PLd_rd_a (ldi2, rd2, ADimm (b2, n2))) ) ->
if are_compat_load ldi1 ldi2 then
let ld_string = get_load_string ldi1 in
if is_valid_ldr rd1 rd2 b1 b2 n1 n2 ld_string then (
let ld_t = get_load_pht ldi1 in
if is_valid_ldr rd1 rd2 b1 b2 n1 n2 ld_t then (
if min_is_rev n1 n2 then (
if debug then eprintf "LDP_CONSEC_PEEP_IMM_INC_%s\n" ld_string;
if debug then eprintf "LDP_CONSEC_PEEP_IMM_INC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
......@@ -502,7 +529,7 @@ let pair_rep insta =
chunk_load ldi2,
ADimm (b1, n1) )))
else (
if debug then eprintf "LDP_CONSEC_PEEP_IMM_DEC_%s\n" ld_string;
if debug then eprintf "LDP_CONSEC_PEEP_IMM_DEC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
......@@ -524,9 +551,9 @@ let pair_rep insta =
| _ -> pot_ldrd_rep
in
(* Search a previous compatible load *)
let ld_string = get_load_string ldi in
let ld_t = get_load_pht ldi in
match
search_compat_rep rd1 b1 n1 insta !pot_rep ld_string
search_compat_rep rd1 b1 n1 insta !pot_rep ld_t
with
(* If we can't find a candidate, add the current load as a potential future one *)
| None -> pot_rep := i :: !pot_rep
......@@ -537,13 +564,13 @@ let pair_rep insta =
pot_rep := List.filter filt !pot_rep;
insta.(rep) <- Pnop;
if min_is_rev n n1 then (
if debug then eprintf "LDP_FORW_SPACED_PEEP_IMM_INC_%s\n" ld_string;
if debug then eprintf "LDP_FORW_SPACED_PEEP_IMM_INC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
(trans_ldi ldi, r, rd1, c, chunk_load ldi, ADimm (b, n))))
else (
if debug then eprintf "LDP_FORW_SPACED_PEEP_IMM_DEC_%s\n" ld_string;
if debug then eprintf "LDP_FORW_SPACED_PEEP_IMM_DEC_%a\n" print_ph_ty ld_t;
insta.(i) <-
PLoad
(Pldp
......@@ -560,9 +587,9 @@ let pair_rep insta =
pot_strs_rep := [];
pot_strd_rep := [];
if are_compat_store sti1 sti2 then
let st_string = get_store_string sti1 in
if is_valid_str b1 b2 n1 n2 st_string then (
if debug then eprintf "STP_CONSEC_PEEP_IMM_INC_%s\n" st_string;
let st_t = get_store_pht sti1 in
if is_valid_str b1 b2 n1 n2 st_t then (
if debug then eprintf "STP_CONSEC_PEEP_IMM_INC_%a\n" print_ph_ty st_t;
insta.(i) <-
PStore
(Pstp
......@@ -584,9 +611,9 @@ let pair_rep insta =
| _ -> pot_strd_rep
in
(* Search a previous compatible store *)
let st_string = get_store_string sti in
let st_t = get_store_pht sti in
match
search_compat_rep rd1 b1 n1 insta !pot_rep st_string
search_compat_rep rd1 b1 n1 insta !pot_rep st_t
with
(* If we can't find a candidate, clean and add the current store as a potential future one *)
| None ->
......@@ -601,7 +628,7 @@ let pair_rep insta =
let filt x = x != rep in
pot_rep := List.filter filt !pot_rep;
insta.(rep) <- Pnop;
if debug then eprintf "STP_FORW_SPACED_PEEP_IMM_INC_%s\n" st_string;
if debug then eprintf "STP_FORW_SPACED_PEEP_IMM_INC_%a\n" print_ph_ty st_t;
insta.(i) <-
PStore
(Pstp (trans_sti sti, r, rd1, c, chunk_store sti, ADimm (b, n)))
......
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