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Diffstat (limited to 'mppa_k1c/ConstpropOp.vp')
| -rw-r--r-- | mppa_k1c/ConstpropOp.vp | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/mppa_k1c/ConstpropOp.vp b/mppa_k1c/ConstpropOp.vp deleted file mode 100644 index 2a428020..00000000 --- a/mppa_k1c/ConstpropOp.vp +++ /dev/null @@ -1,312 +0,0 @@ -(* *************************************************************) -(* *) -(* The Compcert verified compiler *) -(* *) -(* Sylvain Boulmé Grenoble-INP, VERIMAG *) -(* Xavier Leroy INRIA Paris-Rocquencourt *) -(* David Monniaux CNRS, VERIMAG *) -(* Cyril Six Kalray *) -(* *) -(* Copyright Kalray. Copyright VERIMAG. All rights reserved. *) -(* This file is distributed under the terms of the INRIA *) -(* Non-Commercial License Agreement. *) -(* *) -(* *************************************************************) - -(** Strength reduction for operators and conditions. - This is the machine-dependent part of [Constprop]. *) - -Require Archi. -Require Import Coqlib Compopts. -Require Import AST Integers Floats. -Require Import Op Registers. -Require Import ValueDomain. - -(** * Converting known values to constants *) - -Definition const_for_result (a: aval) : option operation := - match a with - | I n => Some(Ointconst n) - | L n => if Archi.ptr64 then Some(Olongconst n) else None - | F n => if Compopts.generate_float_constants tt then Some(Ofloatconst n) else None - | FS n => if Compopts.generate_float_constants tt then Some(Osingleconst n) else None - | Ptr(Gl id ofs) => Some(Oaddrsymbol id ofs) - | Ptr(Stk ofs) => Some(Oaddrstack ofs) - | _ => None - end. - -(** * Operator strength reduction *) - -(** We now define auxiliary functions for strength reduction of - operators and addressing modes: replacing an operator with a cheaper - one if some of its arguments are statically known. These are again - large pattern-matchings expressed in indirect style. *) - -Nondetfunction cond_strength_reduction - (cond: condition) (args: list reg) (vl: list aval) := - match cond, args, vl with - | Ccomp c, r1 :: r2 :: nil, I n1 :: v2 :: nil => - (Ccompimm (swap_comparison c) n1, r2 :: nil) - | Ccomp c, r1 :: r2 :: nil, v1 :: I n2 :: nil => - (Ccompimm c n2, r1 :: nil) - | Ccompu c, r1 :: r2 :: nil, I n1 :: v2 :: nil => - (Ccompuimm (swap_comparison c) n1, r2 :: nil) - | Ccompu c, r1 :: r2 :: nil, v1 :: I n2 :: nil => - (Ccompuimm c n2, r1 :: nil) - | Ccompl c, r1 :: r2 :: nil, L n1 :: v2 :: nil => - (Ccomplimm (swap_comparison c) n1, r2 :: nil) - | Ccompl c, r1 :: r2 :: nil, v1 :: L n2 :: nil => - (Ccomplimm c n2, r1 :: nil) - | Ccomplu c, r1 :: r2 :: nil, L n1 :: v2 :: nil => - (Ccompluimm (swap_comparison c) n1, r2 :: nil) - | Ccomplu c, r1 :: r2 :: nil, v1 :: L n2 :: nil => - (Ccompluimm c n2, r1 :: nil) - | _, _, _ => - (cond, args) - end. - -Definition make_cmp_base (c: condition) (args: list reg) (vl: list aval) := - let (c', args') := cond_strength_reduction c args vl in (Ocmp c', args'). - -Definition make_cmp_imm_eq (c: condition) (args: list reg) (vl: list aval) - (n: int) (r1: reg) (v1: aval) := - if Int.eq_dec n Int.one && vincl v1 (Uns Ptop 1) then (Omove, r1 :: nil) - else if Int.eq_dec n Int.zero && vincl v1 (Uns Ptop 1) then (Oxorimm Int.one, r1 :: nil) - else make_cmp_base c args vl. - -Definition make_cmp_imm_ne (c: condition) (args: list reg) (vl: list aval) - (n: int) (r1: reg) (v1: aval) := - if Int.eq_dec n Int.zero && vincl v1 (Uns Ptop 1) then (Omove, r1 :: nil) - else if Int.eq_dec n Int.one && vincl v1 (Uns Ptop 1) then (Oxorimm Int.one, r1 :: nil) - else make_cmp_base c args vl. - -Nondetfunction make_cmp (c: condition) (args: list reg) (vl: list aval) := - match c, args, vl with - | Ccompimm Ceq n, r1 :: nil, v1 :: nil => - make_cmp_imm_eq c args vl n r1 v1 - | Ccompimm Cne n, r1 :: nil, v1 :: nil => - make_cmp_imm_ne c args vl n r1 v1 - | Ccompuimm Ceq n, r1 :: nil, v1 :: nil => - make_cmp_imm_eq c args vl n r1 v1 - | Ccompuimm Cne n, r1 :: nil, v1 :: nil => - make_cmp_imm_ne c args vl n r1 v1 - | _, _, _ => - make_cmp_base c args vl - end. - -Definition make_addimm (n: int) (r: reg) := - if Int.eq n Int.zero - then (Omove, r :: nil) - else (Oaddimm n, r :: nil). - -Definition make_shlimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int.iwordsize then (Oshlimm n, r1 :: nil) - else (Oshl, r1 :: r2 :: nil). - -Definition make_shrimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int.iwordsize then (Oshrimm n, r1 :: nil) - else (Oshr, r1 :: r2 :: nil). - -Definition make_shruimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int.iwordsize then (Oshruimm n, r1 :: nil) - else (Oshru, r1 :: r2 :: nil). - -Definition make_mulimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then - (Ointconst Int.zero, nil) - else if Int.eq n Int.one then - (Omove, r1 :: nil) - else - match Int.is_power2 n with - | Some l => (Oshlimm l, r1 :: nil) - | None => (Omul, r1 :: r2 :: nil) - end. - -Definition make_andimm (n: int) (r: reg) (a: aval) := - if Int.eq n Int.zero then (Ointconst Int.zero, nil) - else if Int.eq n Int.mone then (Omove, r :: nil) - else if match a with Uns _ m => Int.eq (Int.zero_ext m (Int.not n)) Int.zero - | _ => false end - then (Omove, r :: nil) - else (Oandimm n, r :: nil). - -Definition make_orimm (n: int) (r: reg) := - if Int.eq n Int.zero then (Omove, r :: nil) - else if Int.eq n Int.mone then (Ointconst Int.mone, nil) - else (Oorimm n, r :: nil). - -Definition make_xorimm (n: int) (r: reg) := - if Int.eq n Int.zero then (Omove, r :: nil) - else (Oxorimm n, r :: nil). - -Definition make_divimm n (r1 r2: reg) := - if Int.eq n Int.one then - (Omove, r1 :: nil) - else - match Int.is_power2 n with - | Some l => if Int.ltu l (Int.repr 31) - then (Oshrximm l, r1 :: nil) - else (Odiv, r1 :: r2 :: nil) - | None => (Odiv, r1 :: r2 :: nil) - end. - -Definition make_divuimm n (r1 r2: reg) := - if Int.eq n Int.one then - (Omove, r1 :: nil) - else - match Int.is_power2 n with - | Some l => (Oshruimm l, r1 :: nil) - | None => (Odivu, r1 :: r2 :: nil) - end. - -Definition make_moduimm n (r1 r2: reg) := - match Int.is_power2 n with - | Some l => (Oandimm (Int.sub n Int.one), r1 :: nil) - | None => (Omodu, r1 :: r2 :: nil) - end. - -Definition make_addlimm (n: int64) (r: reg) := - if Int64.eq n Int64.zero - then (Omove, r :: nil) - else (Oaddlimm n, r :: nil). - -Definition make_shllimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int64.iwordsize' then (Oshllimm n, r1 :: nil) - else (Oshll, r1 :: r2 :: nil). - -Definition make_shrlimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int64.iwordsize' then (Oshrlimm n, r1 :: nil) - else (Oshrl, r1 :: r2 :: nil). - -Definition make_shrluimm (n: int) (r1 r2: reg) := - if Int.eq n Int.zero then (Omove, r1 :: nil) - else if Int.ltu n Int64.iwordsize' then (Oshrluimm n, r1 :: nil) - else (Oshrlu, r1 :: r2 :: nil). - -Definition make_mullimm (n: int64) (r1 r2: reg) := - if Int64.eq n Int64.zero then - (Olongconst Int64.zero, nil) - else if Int64.eq n Int64.one then - (Omove, r1 :: nil) - else - match Int64.is_power2' n with - | Some l => (Oshllimm l, r1 :: nil) - | None => (Omull, r1 :: r2 :: nil) - end. - -Definition make_andlimm (n: int64) (r: reg) (a: aval) := - if Int64.eq n Int64.zero then (Olongconst Int64.zero, nil) - else if Int64.eq n Int64.mone then (Omove, r :: nil) - else (Oandlimm n, r :: nil). - -Definition make_orlimm (n: int64) (r: reg) := - if Int64.eq n Int64.zero then (Omove, r :: nil) - else if Int64.eq n Int64.mone then (Olongconst Int64.mone, nil) - else (Oorlimm n, r :: nil). - -Definition make_xorlimm (n: int64) (r: reg) := - if Int64.eq n Int64.zero then (Omove, r :: nil) - else (Oxorlimm n, r :: nil). - -Definition make_divlimm n (r1 r2: reg) := - match Int64.is_power2' n with - | Some l => if Int.ltu l (Int.repr 63) - then (Oshrxlimm l, r1 :: nil) - else (Odivl, r1 :: r2 :: nil) - | None => (Odivl, r1 :: r2 :: nil) - end. - -Definition make_divluimm n (r1 r2: reg) := - match Int64.is_power2' n with - | Some l => (Oshrluimm l, r1 :: nil) - | None => (Odivlu, r1 :: r2 :: nil) - end. - -Definition make_modluimm n (r1 r2: reg) := - match Int64.is_power2 n with - | Some l => (Oandlimm (Int64.sub n Int64.one), r1 :: nil) - | None => (Omodlu, r1 :: r2 :: nil) - end. - -Definition make_mulfimm (n: float) (r r1 r2: reg) := - if Float.eq_dec n (Float.of_int (Int.repr 2)) - then (Oaddf, r :: r :: nil) - else (Omulf, r1 :: r2 :: nil). - -Definition make_mulfsimm (n: float32) (r r1 r2: reg) := - if Float32.eq_dec n (Float32.of_int (Int.repr 2)) - then (Oaddfs, r :: r :: nil) - else (Omulfs, r1 :: r2 :: nil). - -Definition make_cast8signed (r: reg) (a: aval) := - if vincl a (Sgn Ptop 8) then (Omove, r :: nil) else (Ocast8signed, r :: nil). -Definition make_cast16signed (r: reg) (a: aval) := - if vincl a (Sgn Ptop 16) then (Omove, r :: nil) else (Ocast16signed, r :: nil). - -Nondetfunction op_strength_reduction - (op: operation) (args: list reg) (vl: list aval) := - match op, args, vl with - | Ocast8signed, r1 :: nil, v1 :: nil => make_cast8signed r1 v1 - | Ocast16signed, r1 :: nil, v1 :: nil => make_cast16signed r1 v1 - | Oadd, r1 :: r2 :: nil, I n1 :: v2 :: nil => make_addimm n1 r2 - | Oadd, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_addimm n2 r1 - | Osub, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_addimm (Int.neg n2) r1 - | Omul, r1 :: r2 :: nil, I n1 :: v2 :: nil => make_mulimm n1 r2 r1 - | Omul, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_mulimm n2 r1 r2 - | Odiv, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_divimm n2 r1 r2 - | Odivu, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_divuimm n2 r1 r2 - | Omodu, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_moduimm n2 r1 r2 - | Oand, r1 :: r2 :: nil, I n1 :: v2 :: nil => make_andimm n1 r2 v2 - | Oand, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_andimm n2 r1 v1 - | Oandimm n, r1 :: nil, v1 :: nil => make_andimm n r1 v1 - | Oor, r1 :: r2 :: nil, I n1 :: v2 :: nil => make_orimm n1 r2 - | Oor, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_orimm n2 r1 - | Oxor, r1 :: r2 :: nil, I n1 :: v2 :: nil => make_xorimm n1 r2 - | Oxor, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_xorimm n2 r1 - | Oshl, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shlimm n2 r1 r2 - | Oshr, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shrimm n2 r1 r2 - | Oshru, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shruimm n2 r1 r2 - | Oaddl, r1 :: r2 :: nil, L n1 :: v2 :: nil => make_addlimm n1 r2 - | Oaddl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_addlimm n2 r1 - | Osubl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_addlimm (Int64.neg n2) r1 - | Omull, r1 :: r2 :: nil, L n1 :: v2 :: nil => make_mullimm n1 r2 r1 - | Omull, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_mullimm n2 r1 r2 - | Odivl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_divlimm n2 r1 r2 - | Odivlu, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_divluimm n2 r1 r2 - | Omodlu, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_modluimm n2 r1 r2 - | Oandl, r1 :: r2 :: nil, L n1 :: v2 :: nil => make_andlimm n1 r2 v2 - | Oandl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_andlimm n2 r1 v1 - | Oandlimm n, r1 :: nil, v1 :: nil => make_andlimm n r1 v1 - | Oorl, r1 :: r2 :: nil, L n1 :: v2 :: nil => make_orlimm n1 r2 - | Oorl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_orlimm n2 r1 - | Oxorl, r1 :: r2 :: nil, L n1 :: v2 :: nil => make_xorlimm n1 r2 - | Oxorl, r1 :: r2 :: nil, v1 :: L n2 :: nil => make_xorlimm n2 r1 - | Oshll, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shllimm n2 r1 r2 - | Oshrl, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shrlimm n2 r1 r2 - | Oshrlu, r1 :: r2 :: nil, v1 :: I n2 :: nil => make_shrluimm n2 r1 r2 - | Ocmp c, args, vl => make_cmp c args vl - | Omulf, r1 :: r2 :: nil, v1 :: F n2 :: nil => make_mulfimm n2 r1 r1 r2 - | Omulf, r1 :: r2 :: nil, F n1 :: v2 :: nil => make_mulfimm n1 r2 r1 r2 - | Omulfs, r1 :: r2 :: nil, v1 :: FS n2 :: nil => make_mulfsimm n2 r1 r1 r2 - | Omulfs, r1 :: r2 :: nil, FS n1 :: v2 :: nil => make_mulfsimm n1 r2 r1 r2 - | _, _, _ => (op, args) - end. - -Nondetfunction addr_strength_reduction - (addr: addressing) (args: list reg) (vl: list aval) := - match addr, args, vl with - | Aindexed n, r1 :: nil, Ptr(Gl symb n1) :: nil => - if (orb (Archi.pic_code tt) (negb (Compopts.optim_globaladdrtmp tt))) - then (addr, args) - else (Aglobal symb (Ptrofs.add n1 n), nil) - | Aindexed n, r1 :: nil, Ptr(Stk n1) :: nil => - (Ainstack (Ptrofs.add n1 n), nil) - | _, _, _ => - (addr, args) - end. - |