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* Updated PR by removing whitespaces. Bug 17450.Bernhard Schommer2015-10-201-10/+10
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* Use Coq strings instead of idents to name external and builtin functions.Xavier Leroy2015-10-111-6/+6
| | | | | | | | | | The AST.ident type represents source-level identifiers as unique positive numbers. However, the mapping identifiers <-> AST.ident differs between runs of CompCert on different source files. This is problematic when we need to produce or recognize external functions and builtin functions with fixed names, for example: * in $ARCH/Machregs.v to define the register conventions for builtin functions; * in the VST program logic from Princeton to treat thread primitives specially. So far, we used AST.ident_of_string to recover the ident associated with a string. However, this function is defined in OCaml and doesn't execute within Coq. This is a problem both for VST and for future executability of CompCert within Coq. This commit replaces "ident" by "string" in the arguments of EF_external, EF_builtin, EF_inline_asm, EF_annot, and EF_annot_val. This provides stable names for externals and builtins, as needed. For inline asm and annotations, it's a matter of taste, but using strings feels more natural. EF_debug keeps using idents, since some kinds of EF_debug annotations talk about program variables.
* Refactoring of builtins and annotations in the back-end.Xavier Leroy2015-08-211-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | Before, the back-end languages had distinct instructions - Iannot for annotations, taking structured expressions (annot_arg) as arguments, and producing no results' - Ibuiltin for other builtins, using simple pseudoregs/locations/registers as arguments and results. This branch enriches Ibuiltin instructions so that they take structured expressions (builtin_arg and builtin_res) as arguments and results. This way, - Annotations fit the general pattern of builtin functions, so Iannot instructions are removed. - EF_vload_global and EF_vstore_global become useless, as the same optimization can be achieved by EF_vload/vstore taking a structured argument of the "address of global" kind. - Better code can be generated for builtin_memcpy between stack locations, or volatile accesses to stack locations. Finally, this commit also introduces a new kind of external function, EF_debug, which is like EF_annot but produces no observable events. It will be used later to transport debug info through the back-end, without preventing optimizations.
* Cleanups and updates for extended asm.Xavier Leroy2015-04-211-1/+1
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* Experiment: support a subset of GCC's extended asm statements.Xavier Leroy2015-04-171-1/+1
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* Updated the Caml part. Added some more tests in annot1.c.Xavier Leroy2015-03-271-2/+1
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* Record public global definitions via field "prog_public" in AST.program.Xavier Leroy2014-11-241-0/+2
| | | | For the moment, this field is ignored.
* - Support "switch" statements over 64-bit integersxleroy2014-08-171-5/+15
| | | | | | | | | | | | | (in CompCert C to Cminor, included) - Translation of "switch" to decision trees or jumptables made generic over the sizes of integers and moved to the Cminor->CminorSel pass instead of CminorSel->RTL as before. - CminorSel: add "exitexpr" to support the above. - ValueDomain: more precise analysis of comparisons against an integer literal. E.g. "x >=u 0" is always true. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2565 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Integration of Jacques-Henri Jourdan's verified parser.xleroy2014-04-291-10/+5
| | | | | | | (Merge of branch newparser.) git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2469 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* - Back to origins: suppress Mfloat64al32 chunk and align Mfloat64 to 4.xleroy2014-01-121-2/+0
| | | | | | | - Revised printing of intermediate RTL code. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2403 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Simpler, more robust emulation of calls to variadic functions:xleroy2013-12-281-2/+2
| | | | | | | | | | | | | | - C function types and Cminor signatures annotated by calling conventions. esp. vararg / not vararg - Cshmgen: generate correct code for function call where there are more arguments than listed in the function prototype. This is still undefined behavior according to the formal semantics, but correct code is generated. - C2C, */PrintAsm.ml: remove "printf$iif" hack. - powerpc/, checklink/: don't generate stubs for variadic functions. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2386 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Cminor parsing and printing (from Andrew Tolmach)xleroy2013-10-161-9/+96
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2345 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Constant propagation within __builtin_annot.xleroy2013-02-241-1/+2
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2126 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Ported to Coq 8.4pl1. Merge of branches/coq-8.4.xleroy2013-01-291-16/+15
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2101 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Update Cminor parser and printer so that the parser can parse the whole ↵xleroy2013-01-071-16/+91
| | | | | | Cminor language and can reparse the output of the printer. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2090 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of the clightgen branch:xleroy2012-12-291-1/+1
| | | | | | | | | | | | | | | | | | - 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
* Globalenvs: allocate one-byte block with permissions Nonempty for eachxleroy2012-11-121-21/+16
| | | | | | | | | | | function definition, so that comparisons between function pointers are correctly defined. AST, Globalenvs, and many other files: represent programs as a list of (function or variable) definitions instead of two lists, one for functions and the other for variables. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2067 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of branch seq-and-or. See Changelog for details.xleroy2012-10-061-21/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2059 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Use Flocq for floatsxleroy2012-06-281-5/+5
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1939 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Minor updatesxleroy2012-03-111-1/+0
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1848 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Merge of Andrew Tolmach's HASP-related changesxleroy2012-03-091-10/+65
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1838 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Extraction: map Coq pairs to Caml pairs and Coq chars (type ascii) to Caml charsxleroy2011-10-181-11/+10
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1732 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Revised handling of annotation statements, and more generally built-in ↵xleroy2011-06-131-1/+1
| | | | | | functions, and more generally external functions git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1672 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Support for inlined built-ins.xleroy2010-06-291-3/+1
| | | | | | | | | | | | | 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
* Updated Caml parts to match new representation for global variables.xleroy2010-05-261-1/+2
| | | | | | | */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
* Conflict between extraction/CList and cil/obj/xxx/clist on case-insensitive ↵xleroy2009-01-291-6/+5
| | | | | | file systems. Replaced CList by CoqList and likewise for CString and CInt. Removed useless references to CList in hand-written Caml code. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@951 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Elimination of "alloc" instruction in Caml files and test files.xleroy2009-01-111-11/+0
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@946 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Fixed unary minusxleroy2009-01-071-1/+1
| | | | git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@944 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
* Reorganized the development, modularizing away machine-dependent parts.xleroy2008-12-301-0/+541
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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