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* Remove code that will is deprecated in ocaml 4.03Bernhard Schommer2016-06-211-0/+10
| | | | | | | | Most of the code can be String.uppercase usages can either be replaced by a more specialized version of coqstring_of_camlstring (which is also slightly more effecient) or by specialized checks that reject wrong code earlier. Bug 19187
* ValueAnalysis: use ZTrees instead of ZMaps for abstracting contents of ↵Xavier Leroy2016-05-071-0/+80
| | | | | | | | memory blocks Trees are slightly more efficient than Maps, and avoid maintaining the invariant on the default value. lib/Maps: add a generic construction of a (partial) Tree module from an indexed type; use it to define ZTrees (trees indexed by Z integers).
* Revise the Stacking pass and its proof to make it easier to adapt to 64-bit ↵Xavier Leroy2016-04-271-0/+244
| | | | | | | | | | | | | | | | | | | architectures The original Stacking pass and its proof hard-wire assumptions about the processor and the register allocation, namely that integer registers are 32 bit wide and that all stack slots have natural alignment 4, which precludes having stack slots of type Tlong. Those assumptions become false if the target processor has 64-bit integer registers. This commit makes minimal adjustments to the Stacking pass so as to lift these assumptions: - Stack slots of type Tlong (or more generally of natural alignment 8) are supported. For slots produced by register allocation, the alignment is validated a posteriori in Lineartyping. For slots produced by the calling conventions, alignment is proved as part of the "loc_argument_acceptable" property in Conventions1. - The code generated by Stacking to save and restore used callee-save registers no longer assumes 32-bit integer registers. Actually, it supports any combination of sizes for registers. - To support the new save/restore code, Bounds was changed to record the set of all callee-save registers used, rather than just the max index of callee-save registers used. On CompCert's current 32-bit target architectures, the new Stacking pass should generate pretty much the same code as the old one, modulo minor differences in the layout of the stack frame. (E.g. padding could be introduced at different places.) The bulk of this big commit is related to the proof of the Stacking phase. The old proof strategy was painful and not obviously adaptable to the new Stacking phase, so I rewrote Stackingproof entirely, using an approach inspired by separation logic. The new library common/Separation.v defines assertions about memory states that can be composed using a separating conjunction, just like pre- and post-conditions in separation logic. Those assertions are used in Stackingproof to describe the contents of the stack frames during the execution of the generated Mach code, and relate them with the Linear location maps. As a further simplification, the callee-save/caller-save distinction is now defined in Conventions1 by a function is_callee_save: mreg -> bool, instead of lists of registers of either kind as before. This eliminates many boring classification lemmas from Conventions1. LTL and Lineartyping were adapted accordingly. Finally, this commit introduces a new library called Decidableplus to prove some propositions by reflection as Boolean computations. It is used to further simplify the proofs in Conventions1.
* Merge pull request #92 from AbsInt/cleanupXavier Leroy2016-03-214-8/+18
|\ | | | | This PR activates more OCaml warnings and turns all warnings into errors. Also some unused functions, variables and types are removed.
| * Merge branch 'master' into cleanupBernhard Schommer2016-03-212-34/+189
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| * | Cleanup of AsmToJSON.Bernhard Schommer2016-03-161-2/+10
| | | | | | | | | | | | | | | | | | Removed unused code, factored out common functions and added an interface file. Bug 18394
| * | Upgrade ocaml version needed and enable more warnings.Bernhard Schommer2016-03-102-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the menhir version we use requires ocaml>4.02 we can also upgrade the required ocaml version to >4.02 and remove the deprecate String functions. Also we now activate all warnings except for 4,9 und 27 for regular code plus a bunch of warnings for the generated code. 4 and 9 are not really usefull and 27 is deactivated since until the usage string is printed in a way that requires no newline. Bug 18394.
| * | Code cleanup.Bernhard Schommer2016-03-101-0/+2
| | | | | | | | | | | | | | | | | | Removed some unused variables, functions etc. and resolved some problems which occur if all warnings except 3,4,9 and 29 are active. Bug 18394.
* | | Also ignore windows line endings.Bernhard Schommer2016-03-211-1/+2
| |/ |/| | | | | | | | | Windows style line endings can end up in the Tokenize pass. This can lead to some problems for example in pragma processing. Bug 18316
* | Preliminaries: extend the Coqlib and Maps libraries.Xavier Leroy2016-03-062-34/+189
|/ | | | | | | - Coqlib: option_rel to lift a relation to option type. - Coqlib: more lemmas about list_forall2. - Coqlib: introduce type nlist (nonempty lists) and some operations. - Maps: a variant of PTree.elements_extensional that uses option_rel.
* Added printer for Configuration and finished Clflags.Bernhard Schommer2016-01-251-0/+9
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* Started implementing a printer for Clflags.Bernhard Schommer2016-01-251-0/+33
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* Open files in binary mode.Bernhard Schommer2015-11-301-2/+1
| | | | | | On windows opening files in text mode can result in errors due to non-windows compatible input. Thus open files only in binary mode. Bug 17664
* Updated PR by removing whitespaces. Bug 17450.Bernhard Schommer2015-10-2018-1698/+1698
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* Move more functionality in the new interface.Bernhard Schommer2015-09-161-9/+1
| | | | | | Added functions to add more information to the debuging interface, like the struct layout with offsets, bitifiled layout and removed the no longer needed mapping from stamp to atom.
* Added symbol functions for printing of the location for global variables.Bernhard Schommer2015-08-211-0/+7
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* Tighten and prove correct the underflow/overflow bounds for parsing of FP ↵Xavier Leroy2015-07-062-96/+220
| | | | | | | | | literals. This is a follow-up to commit 350354c. - Move Float.build_from_parsed to Fappli_IEEE_extra.Bparse - Add early checks for overflow and underflow and prove them correct. - Improve speed of Bparse by using a fast exponentiation (square-and-multiply).
* Give a name to the type of atoms.Xavier Leroy2015-04-231-2/+4
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* remove not used hypotheses in TREEJacques-Henri Jourdan2015-03-251-9/+4
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* Merge branch 'master' into no-shellBernhard Schommer2015-02-192-0/+139
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| * In -g -S mode, annotate the generated asm file with the C source code in ↵Xavier Leroy2015-01-072-0/+139
| | | | | | | | | | | | comments. Refactor printing of .loc debug directives in backend/PrintAnnot.ml
* | Use Unix.create_process instead of Sys.command to run external tools.Xavier Leroy2014-12-192-0/+150
|/ | | | | Revised parsing of compcert.ini file to split arguments into words like POSIX shell does (including quotes).
* build_from_parsed: simplified code + correctness proof.Xavier Leroy2014-11-151-15/+86
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* Upgrade to flocq 2.4.0Jacques-Henri Jourdan2014-10-072-292/+106
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* Add theorem "elements_remove".Xavier Leroy2014-09-241-167/+178
| | | | | Use "elements_remove" to simplify the proof of "cardinal_remove". Simplify some of the proofs over function "xelements".
* More efficient implementations of map, fold, etc.xleroy2014-08-271-164/+109
| | | | | | | (Contributed by Vincent Laporte.) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2618 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* The NaN behavior of float_of_single differs on PowerPC and on IA32/ARM.xleroy2014-07-281-73/+18
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2550 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of "newspilling" branch:xleroy2014-07-233-1468/+2529
| | | | | | | | | | | | | | | - Support single-precision floats as first-class values - Introduce chunks Many32, Many64 and types Tany32, Tany64 to support saving and restoring registers without knowing the exact types (int/single/float) of their contents, just their sizes. - Memory model: generalize the opaque encoding of pointers to apply to any value, not just pointers, if chunks Many32/Many64 are selected. - More properties of FP arithmetic proved. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2537 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Tweaks to support defunctorization.xleroy2014-07-231-9/+19
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2536 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Add Proof keyword so that documentation generation worksjjourdan2014-07-041-0/+2
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2520 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cleaner, more resilient parsing of pragmas.xleroy2014-06-052-0/+78
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2507 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Integration of Jacques-Henri Jourdan's verified parser.xleroy2014-04-291-0/+50
| | | | | | | (Merge of branch newparser.) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2469 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Constprop: use "not" for "xorimm(-1)"; optimize == 1 and != 0 comparisons ↵xleroy2014-04-091-0/+10
| | | | | | | | | | over booleans. Select*: more systematic constant propagation; don't CP shifts by amounts outside of [0..31]. Driver: timer for whole compilation. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2452 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch linear-typing:xleroy2014-04-061-66/+0
| | | | | | | | | | | | | | | | | | | | | | | 1) Revised division of labor between RTLtyping and Lineartyping: - RTLtyping no longer keeps track of single-precision floats, switches from subtype-based inference to unification-based inference. - Unityping: new library for unification-based inference. - Locations: don't normalize at assignment in a stack slot - Allocation, Allocproof: simplify accordingly. - Lineartyping: add inference of locations that contain a single-precision float. - Stackingproof: adapted accordingly. This addresses a defect report whereas RTLtyping was rejecting code that used a RTL pseudoreg to hold both double- and single-precision floats (see test/regression/singlefloats.c). This corresponds to commits 2435+2436 plus improvements in Lineartyping. 2) Add -dtimings option to measure compilation times. Moved call to C parser from Elab to Parse, to make it easier to measure parsing time independently of elaboration time. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2449 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* floatoflong_from_words, floatoflongu_from_words : proof of PowerPc ↵jjourdan2014-03-131-89/+316
| | | | | | implementation of long <-> float conversions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2430 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* floatoflong_decomp, floatoflongu_decompjjourdan2014-03-111-0/+238
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2429 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Silence the warning "Cannot build inversion information".xleroy2014-02-241-9/+10
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2419 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Introduce and use the platform-specific Archi module giving:xleroy2014-01-031-7/+6
| | | | | | | | | | - endianness - alignment constraints for 8-byte types (which is 4 for x86 ABI and 8 for other ABIs) - NaN handling options (superceding the Nan module, removed). git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2402 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch value-analysis.xleroy2013-12-204-53/+615
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2381 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Axioms: remove prop_ext, currently unused AND unsound in Coq 8.4.xleroy2013-12-151-23/+17
| | | | | | | VERSION: bump version number. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2379 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the "alignas" branch.xleroy2013-10-051-0/+55
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2342 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Slightly more efficient conversion positive <-> intxleroy2013-09-261-17/+22
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2335 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Small improvements in compilation times for the register allocation pass.xleroy2013-09-202-1/+60
| | | | | | | Maps.v: add a PTree.fold1 operation that doesn't maintain the key. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2329 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Floats.v, Nan.v: hard-wire the general shape of binop_pl, so that no axioms xleroy2013-09-141-21/+119
| | | | | | | | | are necessary, only two parameters (default_pl and choose_binop_pl). SelectDiv: optimize FP division by a power of 2. ConstpropOp: optimize 2.0 * x and x * 2.0 into x + x. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2326 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Simplify LPMap by smashing bottoms.xleroy2013-08-121-138/+40
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2306 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of Flocq version 2.2.0.xleroy2013-08-021-105/+339
| | | | | | | More precise modeling of NaNs. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2303 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Optimize integer divisions by positive constants, turning them intoxleroy2013-07-291-0/+28
| | | | | | | multiply-high and shifts. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2300 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Add another expansion of shrx in terms of shifts and adds (from Hacker's ↵xleroy2013-07-281-42/+72
| | | | | | Delight). git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2299 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More properties about subtraction and borrow.xleroy2013-07-151-18/+59
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2298 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* More accurate model of condition register flags for ARM and IA32.xleroy2013-07-132-8/+125
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2297 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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