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* More correct exportclight/ dependenciesxleroy2013-01-081-6/+7
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2094 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Remove some useless "Require".xleroy2012-12-301-64/+64
| | | | | | | Update ARM port. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2085 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the clightgen branch:xleroy2012-12-291-0/+2
| | | | | | | | | | | | | | | | | | - Alternate semantics for Clight where function parameters are temporaries, not variables - New pass SimplLocals that turns non-addressed local variables into temporaries - Simplified Csharpminor, Cshmgen and Cminorgen accordingly - SimplExpr starts its temporaries above variable names, therefoe Cminorgen no longer needs to encode variable names and temps names. - Simplified Cminor parser & printer, as well as Errors, accordingly. - New tool clightgen to produce Clight AST in Coq-parsable .v files. - Removed side condition "return type is void" on rules skip_seq in the semantics of CompCert C, Clight, C#minor, Cminor. - Adapted RTLgenproof accordingly (now uses a memory extension). git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2083 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Clight: split off the big step semantics in ClightBigstep.xleroy2012-10-141-0/+1
| | | | | | | Cstrategy: updated the big-step semantics with Eseqand and Eseqor. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2062 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Make Clight independent of CompCert C.xleroy2012-10-081-12/+14
| | | | | | | Common parts are factored out in cfrontend/Ctypes.v and cfrontend/Cop.v git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2060 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Update CombineOp for arm and ia32.xleroy2012-07-031-3/+3
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1950 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Changelog: updatedxleroy2012-06-281-4/+4
| | | | | | | | | | driver/Interp.ml: clean up dead code lib/Integers.v: add shifted_or_is_add lib/Floats.v: add from_words_eq .depend: updated git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1940 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Use Flocq for floatsxleroy2012-06-281-2/+29
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1939 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* CSE: add recognition of some combined operators, conditions, and addressing ↵xleroy2012-05-261-4/+6
| | | | | | | | | | modes (cf. CombineOp.v) Memory model: cleaning up Memdata Inlining and new Constprop: updated for ARM. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1902 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the newmem branch:xleroy2012-05-211-3/+10
| | | | | | | | | | - Revised memory model with Max and Cur permissions, but without bounds - Constant propagation of 'const' globals - Function inlining at RTL level - (Unprovable) elimination of unreferenced static definitions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1899 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* - Support for _Alignof(ty) operator from ISO C 2011xleroy2012-02-261-2/+2
| | | | | | | | | | and __alignof__(ty), __alignof__(expr) from GCC. - Resurrected __builtin_memcpy_aligned, useful for files generated by Scade KCG 6. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1827 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More aggressive common subexpression elimination (CSE) of memory loads.xleroy2012-02-231-5/+5
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1823 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cosmetic cleanups.xleroy2012-01-151-4/+4
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1793 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the nonstrict-ops branch:xleroy2012-01-141-7/+5
| | | | | | | | | | | - Most RTL operators now evaluate to Some Vundef instead of None when undefined behavior occurs. - More aggressive instruction selection. - "Bertotization" of pattern-matchings now implemented by a proper preprocessor. - Cast optimization moved to cfrontend/Cminorgen; removed backend/CastOptim. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1790 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* New backend pass "RRE": optimize (somewhat) redundant reloads introduced by ↵xleroy2011-08-161-1/+4
| | | | | | the Reload pass. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1713 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Locations.v: add Loc.diff_dec.xleroy2011-08-141-3/+3
| | | | | | | | ia32: lift restriction that 1st arg of ops cannot be ECX (could be useful for a future, better reloading strategy) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1711 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Updated Makefile and dependencies. Typo in powerpc/PrintAsm.ml.xleroy2011-07-281-3/+4
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1689 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added animation of the CompCert C semantics (ccomp -interp)xleroy2011-07-281-2/+3
| | | | | | | | test/regression: int main() so that interpretation works Revised once more implementation of __builtin_memcpy (to check for PPC & ARM) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1688 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch new-semantics: revised and strengthened top-level statements ↵xleroy2011-07-151-4/+4
| | | | | | of semantic preservation. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1683 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added pass CleanupLabels to remove unreferenced labels in a proved way.xleroy2011-05-081-1/+4
| | | | | | | | | | ia32/PrintAsm.ml: simplified accordingly; other PrintAsm.ml to be fixed. ia32/Asm.v: Pmov_ri can undef flags (if translated to xor) cparser/Ceval.ml: treat ~ in constant exprs git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1647 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Renamed Machconcr into Machsem.xleroy2011-04-091-5/+5
| | | | | | | | Removed Machabstr and Machabstr2concr, now useless following the reengineering of Stacking. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1633 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch "unsigned-offsets":xleroy2011-04-091-9/+7
| | | | | | | | | | | | | | - 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
* Initializers for global variables: compile-time evaluation of expressions ↵xleroy2011-03-121-102/+104
| | | | | | done in Coq (module Initializers), using the same primitives as those for CompCert C's semantics. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1602 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Various algorithmic improvements that reduce compile times (thanks Alexandre ↵xleroy2010-10-271-4/+5
| | | | | | | | | | | | | | Pilkiewicz): - Lattice: preserve sharing in "combine" operation - Kildall: use splay heaps (lib/Heaps.v) for node sets - RTLgen: add a "nop" before loops so that natural enumeration of nodes coincides with (reverse) postorder - Maps: add PTree.map1 operation, use it in RTL and LTL. - Driver: increase minor heap size git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1543 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the reuse-temps branch:xleroy2010-09-021-2/+2
| | | | | | | | | | | | - Reload temporaries are marked as destroyed (set to Vundef) across operations in the semantics of LTL, LTLin, Linear and Mach, allowing Asmgen to reuse them. - Added IA32 port. - Cleaned up float conversions and axiomatization of floats. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1499 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branches/full-expr-4:xleroy2010-08-181-8/+12
| | | | | | | | | | | | | | | | | | | | | | - 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.xleroy2010-06-291-31/+32
| | | | | | | | | | | | | 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
* Merging the Princeton implementation of the memory model. Separate axioms ↵xleroy2010-06-281-7/+8
| | | | | | in file lib/Axioms.v. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1354 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More faithful semantics for volatile reads and writes.xleroy2010-05-231-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1346 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Strengthen chunktype inference and use it to remove some useless casts.xleroy2010-05-051-1/+1
| | | | | | | Finished proof of chunktype_compat, which was incomplete. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1335 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cleaner generation of .dependxleroy2010-03-301-67/+63
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1300 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the newmem and newextcalls branches:xleroy2010-03-071-51/+52
| | | | | | | | | | - 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
* Backtracking on commit 1220v1.6xleroy2010-01-131-3/+6
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1228 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* MAJ Changesxleroy2009-12-161-2/+0
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1199 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added support for jump tables in back end.xleroy2009-11-101-3/+6
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1171 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Refactoring of Constprop and Constpropproof into a machine-dependent part ↵xleroy2009-08-171-3/+5
| | | | | | and a machine-independent part. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1126 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Refactored Selection.v and Selectionproof.v into a machine-dependent part + ↵xleroy2009-08-171-3/+5
| | | | | | a machine-independent part. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1125 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Distinguish two kinds of nonterminating behaviors: silent divergencexleroy2009-08-161-4/+6
| | | | | | | | | | | | | | and reactive divergence. As a consequence: - Removed the Enilinf constructor from traceinf (values of traceinf type are always infinite traces). - Traces are now uniquely defined. - Adapted proofs big step -> small step for Clight and Cminor accordingly. - Strengthened results in driver/Complements accordingly. - Added common/Determinism to collect generic results about deterministic semantics. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1123 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added 'going wrong' behaviorsxleroy2009-08-051-2/+3
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1120 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added tail call optimization passxleroy2009-03-261-1/+3
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1015 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Reorganized the development, modularizing away machine-dependent parts.xleroy2008-12-301-66/+69
| | | | | | | | | Started to merge the ARM code generator. Started to add support for PowerPC/EABI. Use ocamlbuild to construct executable from Caml files. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@930 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised back-end so that only 2 integer registers are reserved for reloading.xleroy2008-12-211-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@925 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* MAJ documentationxleroy2008-07-271-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@702 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Alignement de la pile dans PrintPPCxleroy2008-04-131-6/+6
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@606 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fusion de la branche restr-cminor. En Clight, C#minor et Cminor, les ↵xleroy2007-08-281-7/+7
| | | | | | 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
* Ajout de common/Complements.vxleroy2007-08-261-0/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@405 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fusion des modifications faites sur les branches "tailcalls" et "smallstep".xleroy2007-08-041-44/+56
| | | | | | | | | | | | 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
* Suppression de lib/Sets.v, utilisation de FSet a la place. Generalisation ↵xleroy2007-03-021-7/+5
| | | | | | de Lattice pour utiliser une notion d'egalite possiblement differente de =. Adaptation de Kildall et de ses utilisateurs en consequence. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@182 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Petites adaptations pour Coq 8.1gammaxleroy2006-11-111-2/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@135 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Ajout de dependances dans extraction/Makefiletristan2006-09-061-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@80 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e