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* Merge of the nonstrict-ops branch:Gravatar xleroy2012-01-14
| | | | | | | | | | | - 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
* Interp: accommodate "int main(int, char **)".Gravatar xleroy2011-10-19
| | | | | | | Driver: dead code removed. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1733 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Extraction: map Coq pairs to Caml pairs and Coq chars (type ascii) to Caml charsGravatar xleroy2011-10-18
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1732 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Corrected initialization of char arrays by string literals.Gravatar xleroy2011-10-17
| | | | | | | Added -flongdouble option (to turn long double into double) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1731 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Presimplification SimplVolatile: cleaned up and integrated.Gravatar xleroy2011-08-18
| | | | | | test/*/Makefile: normalized 'bench' target git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1717 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* New backend pass "RRE": optimize (somewhat) redundant reloads introduced by ↵Gravatar xleroy2011-08-16
| | | | | | the Reload pass. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1713 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Treatment of volatiles: offer the choice between random reads and treating ↵Gravatar xleroy2011-08-09
| | | | | | volatile accesses like regular loads and stores. (The latter is needed e.g. for Csmith testing.) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1703 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Interp.ml: initialize PRNGGravatar xleroy2011-07-29
| | | | | | | Cexec.v: comments git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1691 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added animation of the CompCert C semantics (ccomp -interp)Gravatar xleroy2011-07-28
| | | | | | | | 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 ↵Gravatar xleroy2011-07-15
| | | | | | of semantic preservation. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1683 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised handling of annotation statements, and more generally built-in ↵Gravatar xleroy2011-06-13
| | | | | | functions, and more generally external functions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1672 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* cparser: support for attributes over struct and union.Gravatar xleroy2011-05-12
| | | | | | | | cparser: added experimental emulation of packed structs (PackedStruct.ml) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1650 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* powerpc/PrintAsm.ml arm/PrintAsm.ml: updated (no label elimination).Gravatar xleroy2011-05-08
| | | | | | | | | | Added -dmach option and corresponding printer for Mach code. CleanupLabelsproof.v: fixed for ARM Driver.ml: -E sends output to stdout; support for .s and .S source files. cparser/Elab.ml: spurious comment deleted. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1648 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added pass CleanupLabels to remove unreferenced labels in a proved way.Gravatar xleroy2011-05-08
| | | | | | | | | | 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.Gravatar xleroy2011-04-09
| | | | | | | | 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":Gravatar xleroy2011-04-09
| | | | | | | | | | | | | | - 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
* More global initialization work done and proved in Coq.Gravatar xleroy2011-03-13
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1603 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Initializers for global variables: compile-time evaluation of expressions ↵Gravatar xleroy2011-03-12
| | | | | | 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
* Revised signed/unsigned char handling.Gravatar xleroy2011-03-10
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1599 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Treat "char" as unsigned OR signed depending on the configuration.Gravatar xleroy2011-03-09
| | | | | | | Fixed infinite expansion of some recursive struct type where recursion goes through a typeded. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1596 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Various algorithmic improvements that reduce compile times (thanks Alexandre ↵Gravatar xleroy2010-10-27
| | | | | | | | | | | | | | 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
* Simplified stdlib wrapper; use it only under MacOS XGravatar xleroy2010-09-04
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1502 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Better emulation of long long as a struct.Gravatar xleroy2010-09-04
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1500 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the reuse-temps branch:Gravatar xleroy2010-09-02
| | | | | | | | | | | | - 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
* Renamed C2Clight into C2CGravatar xleroy2010-08-18
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1468 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branches/full-expr-4:Gravatar xleroy2010-08-18
| | | | | | | | | | | | | | | | | | | | | | - 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.Gravatar xleroy2010-06-29
| | | | | | | | | | | | | 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 ↵Gravatar xleroy2010-06-28
| | | | | | 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.Gravatar xleroy2010-05-23
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1346 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* - Extended traces so that pointers within globals are supported as event values.Gravatar xleroy2010-05-10
| | | | | | | | - Revised handling of volatile reads: the execution environment dictates the value read, via the trace of events. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1345 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cleaned up handling of linker sections.Gravatar xleroy2010-05-08
| | | | | | | Minor updates on ARM code generator. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1339 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Options -I -D -U with a spaceGravatar xleroy2010-03-30
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1302 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Handling of volatile accesses through builtin functions.Gravatar xleroy2010-03-08
| | | | | | | | | Added support for processor-specific builtin functions. Added some PowerPC instructions as builtins. Updated #pragma section handling. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1285 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Handling of builtins, continued.Gravatar xleroy2010-03-07
| | | | | | | PrintCsyntax, PrintAsm: improve printing of float literals. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1284 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the newmem and newextcalls branches:Gravatar xleroy2010-03-07
| | | | | | | | | | - 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
* Suppressed -fall-extensions option, too dangerous wrt flonglongGravatar xleroy2010-03-03
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1275 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Switching to the new C parser/elaborator/simplifierGravatar xleroy2010-03-03
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1269 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised handling of #pragma section and small data areasGravatar xleroy2010-01-27
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1235 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* PowerPC/EABI port: preliminary support for #pragma section andGravatar xleroy2009-11-03
| | | | | | | | | | #pragma use_section. Some clean-ups in Cil2Csyntax. Separate mach-dep parts of extraction/extraction.v into <arch>/extractionMachdep.v git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1167 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Simplified the treatment of the PowerPC small data area; now more specific ↵Gravatar xleroy2009-11-02
| | | | | | to the Diab toolchain. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1165 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Preliminary support for small data area in PowerPC port.Gravatar xleroy2009-11-01
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1163 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* No '\n' in Coq strings...Gravatar xleroy2009-08-18
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1129 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Distinguish two kinds of nonterminating behaviors: silent divergenceGravatar xleroy2009-08-16
| | | | | | | | | | | | | | 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' behaviorsGravatar xleroy2009-08-05
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1120 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Adapted to work with Coq 8.2-1Gravatar xleroy2009-06-05
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1076 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Added tail call optimization passGravatar xleroy2009-03-26
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1015 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* - Added alignment constraints to memory loads and stores.Gravatar xleroy2009-01-11
| | | | | | | | | | | - In Cminor and below, removed pointer validity check in semantics of comparisons, so that evaluation of expressions is independent of memory state. - In Cminor and below, removed "alloc" instruction. - Cleaned up commented-away parts. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@945 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Reorganized the development, modularizing away machine-dependent parts.Gravatar xleroy2008-12-30
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
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