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* Merge of the nonstrict-ops branch:xleroy2012-01-1413-3674/+2207
| | | | | | | | | | | - 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
* Extraction: map Coq pairs to Caml pairs and Coq chars (type ascii) to Caml charsxleroy2011-10-181-3/+3
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1732 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised emulation of packed structsxleroy2011-10-162-8/+8
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1729 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cleaned up old commented-out partsxleroy2011-08-192-18/+0
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1719 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* IA32 port: more faithful treatment of pseudoregister ST0.xleroy2011-08-082-4/+14
| | | | | | | Related general change: support for destroyed_at_moves. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1700 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More builtins for ARM and PowerPCxleroy2011-08-052-2/+8
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1697 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Updated Makefile and dependencies. Typo in powerpc/PrintAsm.ml.xleroy2011-07-281-1/+1
| | | | 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)xleroy2011-07-281-77/+45
| | | | | | | | 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 ↵xleroy2011-07-152-6/+68
| | | | | | of semantic preservation. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1683 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Back from Oregon commit. xleroy2011-07-056-569/+545
| | | | | | | | | powerpc/*: better compilation of some comparisons; revised asmgenproof1. common/*: added Mem.storebytes; used to give semantics to memcpy builtin. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1679 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Forgot to print Oroli opxleroy2011-06-221-0/+4
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1677 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Recognition of rlwimi instruction (useful for bitfield assignment)xleroy2011-06-218-19/+92
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1676 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised handling of annotation statements, and more generally built-in ↵xleroy2011-06-135-61/+200
| | | | | | functions, and more generally external functions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1672 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Oaddrsymbol and small data areaxleroy2011-06-072-2/+13
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1667 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Nicer printing of annotations.xleroy2011-05-231-5/+3
| | | | | | | ia32: support builtins for reversed reads and writes (facilitates testing). git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1655 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* cparser: support for attributes over struct and union.xleroy2011-05-121-2/+2
| | | | | | | | 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
* cparser/StructAssign: always use __builtin_memcpy + alignment indicationxleroy2011-05-111-53/+108
| | | | | | | | | | (simpler and globally more efficient) cfrontend/C2C.ml: specialization of __builtin_memcpy over size */PrintAsm.ml: revised expansion of __builtin_memcpy_* ia32/Asm.ml: typo in comment git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1649 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* powerpc/PrintAsm.ml arm/PrintAsm.ml: updated (no label elimination).xleroy2011-05-081-16/+3
| | | | | | | | | | 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
* Fixed some typosxleroy2011-04-161-4/+4
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1637 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Preliminary support for 'aligned' and 'section' attributes, gcc-style. ↵xleroy2011-04-161-4/+10
| | | | | | New-style handling of sections for IA32 and ARM. Work in progress, to be tested. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1635 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Renamed Machconcr into Machsem.xleroy2011-04-093-60/+60
| | | | | | | | 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":xleroy2011-04-0912-293/+536
| | | | | | | | | | | | | | - 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
* Comment char for Diabxleroy2011-03-131-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1605 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Updated for Coq 8.3pl1. Some cleanups in test/*/Makefile.xleroy2011-03-091-5/+5
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1597 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* float->int conversions, continued: weaker axiomatization.xleroy2010-10-291-2/+2
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1545 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Float.intoffloat and Float.intuoffloat are now partial functions.xleroy2010-10-284-14/+28
| | | | | | | (May fail if float is too big to be converted.) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1544 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the reuse-temps branch:xleroy2010-09-0215-1267/+1080
| | | | | | | | | | | | - 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
* Adding __builtin_annotationxleroy2010-09-012-9/+39
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1497 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Integers: cleaned up bitwise operations, redefined shr, zero_ext and sign_extxleroy2010-08-214-44/+102
| | | | | | | | | as bitwise operations rather than arithmetic ones. CastOptimproof: fixed for ARM port. Other files: adapted to changes in Integers. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1472 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Renamed C2Clight into C2Cxleroy2010-08-181-3/+3
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1468 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branches/full-expr-4:xleroy2010-08-181-0/+109
| | | | | | | | | | | | | | | | | | | | | | - 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
* Fix extraction problemxleroy2010-07-141-2/+2
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1418 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Support for inlined built-ins.xleroy2010-06-297-568/+209
| | | | | | | | | | | | | 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 ↵xleroy2010-06-281-4/+7
| | | | | | in file lib/Axioms.v. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1354 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Updated Caml parts to match new representation for global variables.xleroy2010-05-261-7/+13
| | | | | | | */PrintAsm.ml: watch out for large stack frames in Pallocframe. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1349 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More faithful semantics for volatile reads and writes.xleroy2010-05-232-3/+12
| | | | 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.xleroy2010-05-102-2/+3
| | | | | | | | - 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.xleroy2010-05-084-204/+99
| | | | | | | Minor updates on ARM code generator. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1339 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cosmetic: comments to mark expansions of some pseudoinstructions.xleroy2010-05-081-7/+17
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1337 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Pretty-printers for RTL and LTL. Not yet well integrated.xleroy2010-05-022-0/+7
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1332 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Add "fabs" (floating-point absolute value) as a unary operator inxleroy2010-05-021-2/+0
| | | | | | | 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
* Optimisation: addrsymbol + (expr + cst) and addrstack + (expr + cst).xleroy2010-05-022-0/+28
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1328 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* __builtin_memcpy, continued.xleroy2010-04-171-8/+8
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1320 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Support __builtin_memcpy; use it for struct assignmentxleroy2010-04-171-0/+25
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1319 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* PowerPC: xleroy2010-04-102-3/+25
| | | | | | | | | - added __builtin_trap() - generate .size and .type directives - use natural alignment for variables git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1315 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Coloring: allow to exclude user-specified registers from allocation.xleroy2010-04-103-3/+89
| | | | | | | CPragmas (PPC/EABI only): add #pragma reserve_register git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1314 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Updated Linux conventionsxleroy2010-03-301-3/+6
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1301 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Emit a few comments to help reading the generated asmxleroy2010-03-281-10/+16
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1292 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Handling of volatile accesses through builtin functions.xleroy2010-03-083-39/+209
| | | | | | | | | 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.xleroy2010-03-071-17/+4
| | | | | | | PrintCsyntax, PrintAsm: improve printing of float literals. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1284 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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