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* Cleaned up old commented-out partsxleroy2011-08-191-26/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1719 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Improved semantics of castsxleroy2011-07-171-1/+28
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1685 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* In conditional expressions e1 ? e2 : e3, cast the results of e2 and e3 to ↵xleroy2011-07-161-2/+4
| | | | | | | | | the type of the whole conditional expression. Replaced predicates "cast", "is_true" and "is_false" by functions "sem_cast" and "bool_val". git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1684 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised handling of annotation statements, and more generally built-in ↵xleroy2011-06-131-2/+2
| | | | | | functions, and more generally external functions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1672 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch "unsigned-offsets":xleroy2011-04-091-2/+3
| | | | | | | | | | | | | | - In pointer values "Vptr b ofs", interpret "ofs" as an unsigned int. (Fixes issue with wrong comparison of pointers across 0x8000_0000) - Revised Stacking pass to not use negative SP offsets. - Add pointer validity checks to Cminor ... Mach to support the use of memory injections in Stacking. - Cleaned up Stacklayout modules. - IA32: improved code generation for Mgetparam. - ARM: improved code generation for op-immediate instructions. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1632 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Special case for while(1), for(..., 1, ...) and do ... while(0) loops.xleroy2011-03-151-5/+20
| | | | | | | | Don't wait until Constprop to get rid of trivial loop tests; instead, produces better-looking Cminor. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1610 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branches/full-expr-4:xleroy2010-08-181-162/+134
| | | | | | | | | | | | | | | | | | | | | | - Csyntax, Csem: source C language has side-effects within expressions, performs implicit casts, and has nondeterministic reduction semantics for expressions - Cstrategy: deterministic red. sem. for the above - Clight: the previous source C language, with pure expressions. Added: temporary variables + implicit casts. - New pass SimplExpr to pull side-effects out of expressions (previously done in untrusted Caml code in cparser/) - Csharpminor: added temporary variables to match Clight. - Cminorgen: adapted, removed cast optimization (moved to back-end) - CastOptim: RTL-level optimization of casts - cparser: transformations Bitfields, StructByValue and StructAssign now work on non-simplified expressions - Added pretty-printers for several intermediate languages, and matching -dxxx command-line flags. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1467 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Support for inlined built-ins.xleroy2010-06-291-2/+2
| | | | | | | | | | | | | AST: add ef_inline flag to external functions. Selection: recognize calls to inlined built-ins and inline them as Sbuiltin. CminorSel to Asm: added Sbuiltin/Ibuiltin instruction. PrintAsm: adapted expansion of builtins. C2Clight: adapted detection of builtins. Conventions: refactored in a machine-independent part (backend/Conventions) and a machine-dependent part (ARCH/SYS/Conventions1). git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1356 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Add "fabs" (floating-point absolute value) as a unary operator inxleroy2010-05-021-0/+4
| | | | | | | Clight and C#minor. Recognize __builtin_fabs and turn it into this operator. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1329 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the newmem and newextcalls branches:xleroy2010-03-071-6/+1
| | | | | | | | | | - Revised memory model with concrete representation of ints & floats, and per-byte access permissions - Revised Globalenvs implementation - Matching changes in all languages and proofs. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1282 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Function types didn't always degrade to pointers like they should. ↵xleroy2010-03-021-2/+2
| | | | | | Introduced and used Csyntax.typeconv to address this issue and reduce the number of cases in the classify functions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1266 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* No '\n' in Coq strings...xleroy2009-08-181-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1129 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Transition semantics for Clight and Csharpminorxleroy2009-08-031-29/+16
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1119 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Clight: ajout Econdition, suppression Eindex.xleroy2008-09-271-7/+3
| | | | | | | | caml/PrintCsyntax.ml: afficher les formes a[b] et a->fld. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@789 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Utilisation de intoffloatu. Ajout du cas int + ptr.xleroy2008-05-311-4/+12
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@652 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Ajout license, README, copyright noticesxleroy2008-01-271-0/+12
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@489 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* In Clight, revised handling of comparisons between pointers and 0xleroy2007-11-131-3/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@447 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fusion de la branche restr-cminor. En Clight, C#minor et Cminor, les ↵xleroy2007-08-281-33/+56
| | | | | | expressions sont maintenant pures et les appels de fonctions sont des statements. Ajout de semantiques coinductives pour la divergence en Clight, C#minor, Cminor. Preuve de preservation semantique pour les programmes qui divergent. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@409 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Documentationxleroy2007-08-051-39/+57
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@386 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fusion des modifications faites sur les branches "tailcalls" et "smallstep".xleroy2007-08-041-139/+137
| | | | | | | | | | | | En particulier: - Semantiques small-step depuis RTL jusqu'a PPC - Cminor independant du processeur - Ajout passes Selection et Reload - Ajout des langages intermediaires CminorSel et LTLin correspondants - Ajout des tailcalls depuis Cminor jusqu'a PPC git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@384 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Meilleure compilation de la negation booleennexleroy2006-09-191-1/+4
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@112 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revu traitement des structures et unions recursives. Dans Cshmgen, ↵xleroy2006-09-111-9/+10
| | | | | | meilleure compilation de exit_if_false. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@94 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revu traitement des variables globales dans AST.program et dans Globalenvs.xleroy2006-09-051-15/+6
| | | | | | | | Adaptation frontend, backend en consequence. Integration passe C -> C#minor dans common/Main.v. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@77 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fusion de la branche "traces":xleroy2006-09-041-0/+598
- Ajout de traces d'evenements d'E/S dans les semantiques - Ajout constructions switch et allocation dynamique - Initialisation des variables globales - Portage Coq 8.1 beta Debut d'integration du front-end C: - Traduction Clight -> Csharpminor dans cfrontend/ - Modifications de Csharpminor et Globalenvs en consequence. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@72 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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