diff options
Diffstat (limited to 'x86')
| -rw-r--r-- | x86/Builtins1.v | 54 | ||||
| -rw-r--r-- | x86/SelectOp.vp | 7 | ||||
| -rw-r--r-- | x86/SelectOpproof.v | 24 |
3 files changed, 75 insertions, 10 deletions
diff --git a/x86/Builtins1.v b/x86/Builtins1.v new file mode 100644 index 00000000..6103cc4c --- /dev/null +++ b/x86/Builtins1.v @@ -0,0 +1,54 @@ +(* *********************************************************************) +(* *) +(* The Compcert verified compiler *) +(* *) +(* Xavier Leroy, Collège de France and Inria Paris *) +(* *) +(* Copyright Institut National de Recherche en Informatique et en *) +(* Automatique. All rights reserved. This file is distributed *) +(* under the terms of the GNU General Public License as published by *) +(* the Free Software Foundation, either version 2 of the License, or *) +(* (at your option) any later version. This file is also distributed *) +(* under the terms of the INRIA Non-Commercial License Agreement. *) +(* *) +(* *********************************************************************) + +(** Platform-specific built-in functions *) + +Require Import String Coqlib. +Require Import AST Integers Floats Values. +Require Import Builtins0. + +Inductive platform_builtin : Type := + | BI_fmin + | BI_fmax. + +Local Open Scope string_scope. + +Definition platform_builtin_table : list (string * platform_builtin) := + ("__builtin_fmin", BI_fmin) + :: ("__builtin_fmax", BI_fmax) + :: nil. + +Definition platform_builtin_sig (b: platform_builtin) : signature := + match b with + | BI_fmin | BI_fmax => + mksignature (Tfloat :: Tfloat :: nil) (Some Tfloat) cc_default + end. + +Definition platform_builtin_sem (b: platform_builtin) : builtin_sem (proj_sig_res (platform_builtin_sig b)) := + match b with + | BI_fmin => + mkbuiltin_n2t Tfloat Tfloat Tfloat + (fun f1 f2 => match Float.compare f1 f2 with + | Some Eq | Some Lt => f1 + | Some Gt | None => f2 + end) + | BI_fmax => + mkbuiltin_n2t Tfloat Tfloat Tfloat + (fun f1 f2 => match Float.compare f1 f2 with + | Some Eq | Some Gt => f1 + | Some Lt | None => f2 + end) + end. + diff --git a/x86/SelectOp.vp b/x86/SelectOp.vp index cf0f37ec..378590ce 100644 --- a/x86/SelectOp.vp +++ b/x86/SelectOp.vp @@ -38,7 +38,7 @@ Require Import Coqlib. Require Import Compopts. -Require Import AST Integers Floats. +Require Import AST Integers Floats Builtins. Require Import Op CminorSel. Local Open Scope cminorsel_scope. @@ -568,3 +568,8 @@ Nondetfunction builtin_arg (e: expr) := | Eload chunk (Ainstack ofs) Enil => BA_loadstack chunk ofs | _ => BA e end. + +(** Platform-specific known builtins *) + +Definition platform_builtin (b: platform_builtin) (args: exprlist) : option expr := + None. diff --git a/x86/SelectOpproof.v b/x86/SelectOpproof.v index b412ccf7..821a54e8 100644 --- a/x86/SelectOpproof.v +++ b/x86/SelectOpproof.v @@ -13,15 +13,9 @@ (** Correctness of instruction selection for operators *) Require Import Coqlib. -Require Import AST. -Require Import Integers. -Require Import Floats. -Require Import Values. -Require Import Memory. -Require Import Globalenvs. -Require Import Cminor. -Require Import Op. -Require Import CminorSel. +Require Import AST Integers Floats. +Require Import Values Memory Builtins Globalenvs. +Require Import Cminor Op CminorSel. Require Import SelectOp. Local Open Scope cminorsel_scope. @@ -1010,4 +1004,16 @@ Proof. - constructor; auto. Qed. +(** Platform-specific known builtins *) + +Theorem eval_platform_builtin: + forall bf al a vl v le, + platform_builtin bf al = Some a -> + eval_exprlist ge sp e m le al vl -> + platform_builtin_sem bf vl = Some v -> + exists v', eval_expr ge sp e m le a v' /\ Val.lessdef v v'. +Proof. + intros. discriminate. +Qed. + End CMCONSTR. |