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* AST: extend and adapt to the new linking framework.Xavier Leroy2016-03-061-460/+116
| | | | | | | - Add "prog_defmap" to compute the ptree name -> global definition corresponding to a program. - Move "match_program" to Linking. - Clean up and simplify a bit the transf_* functions for program transformations. - Add a new kind of external functions, "EF_runtime". Unlike "EF_external", an "EF_runtime" external function cannot be implemented by an internal function definition in another compilation unit. (Linking returns an error in this case.) We will use "EF_runtime" for the "_i64_*" helper functions, which must not be defined by the program, and instead must remain external.
* The basic framework for linking and separate compilation.Xavier Leroy2016-03-061-0/+905
| | | | | | | | | | | | | | | | This framework follows "approach A" from the paper "Lightweight Verification of Separate Compilation" by Kang, Kim, Hur, Dreyer and Vafeiadis, POPL 2016. Syntactic linking (of compilation units and their syntactic elements) is modeled by a type class with two components: - a partial binary operation "link" that returns the syntactic element corresponding to the act of linking together its two arguments. It may fail if the two arguments cannot be linked, e.g. are incompatible definitions of the same name. - a partial order "linkorder x y" that holds if "x" is a sub-unit of a whole program or bigger unit "y", or in other words, if "y" can be obtained by linking "x" with other units. Instances of this type class are provided for the type AST.program and its syntactic elements (globvar, globdef, etc). The "match_program" predicate that provides a relational characterization of compiler passes / program transformations is extended to account for context-dependent transformations and separate compilation: the transformation of a function definition can depend on the compilation unit it occurs in (this is the context), and this compilation unit "ctx" is characterized as any unit that is in the "linkorder ctx prog" relation with the whole source program "prog". Under mild hypotheses, we show that "match_program" commutes with linking: if a1 matches b1, a2 matches b2, and a1 and a2 link together producing a, then b1 and b2 link together, producing a b that matches a. Finally, we extend binary linking to linking of a nonempty list of compilation units; commutation with "match_program" still holds.
* Preliminaries: minor extensions to MemoryXavier Leroy2016-03-061-3/+58
| | | | | - Make Mem.unchanged_on transitive. - Add Mem.drop_perm_unchanged_on.
* 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 more support for gcc options.Bernhard Schommer2016-03-021-4/+75
| | | | | | | | | | | | | | | | | | | | | | | Added the gcc options for the preprocessor: -Xpreprocessor -M -MM -MF -MG -MP -MT -MQ -nostdinc -imacros -idirafter -isystem -iquote -P -C -CC Also warn for not supported GCC options in the diab case. Bug 18066
* Merge remote-tracking branch 'origin/configuration-split'Bernhard Schommer2016-02-293-23/+58
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| * Split up tools and options.Bernhard Schommer2016-02-253-23/+58
| | | | | | | | | | | | Added additional configuration entries to seperate tools from options in the .ini files. Internally they are just concatenated in Configuration.ml which allows it to still use old .ini files.
* | Added gcc's Xassembler option.Bernhard Schommer2016-02-291-3/+8
| | | | | | | | | | | | | | The Xassembler option passes one option to the assembler and can be used to pass options to the underlying assembler that the gcc driver does not recognize. Bug 18066
* | Fixed typo. Bug 18066Bernhard Schommer2016-02-291-3/+4
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* | Added some gcc linker options.Bernhard Schommer2016-02-261-0/+22
|/ | | | | | | | | | | CompCert now recognizes the gcc linker options: -nostartfiles -nodefaultlibs -nostdlib -s -Xlinker <opt> -u <symb> Bug 18066.
* bug 18168, catch cases where variadic arguments are transfered via registersMichael Schmidt2016-02-241-2/+2
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* bug 18168, fix offset computation for var-args in ARM stacklayoutMichael Schmidt2016-02-241-1/+1
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* bug 18209, make message compatible to clangMichael Schmidt2016-02-231-1/+1
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* bug 18209, check that input files existMichael Schmidt2016-02-231-0/+14
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* PR#87: include the BSD license in the LICENSE file.Xavier Leroy2016-02-191-1/+28
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* Do not use "movs rd, rs" nor "movs rd, #imm" in Thumb2 mode.Xavier Leroy2016-02-181-2/+8
| | | | | | | | | | | Two reasons: - The movs is not supported if rd or rs is r13 (the stack ptr register). Newer versions of GNU as reject it, older versions were probably emulating it. - The purpose of setting the "s" flag on some operations is to enable 16-bit encoding in Thumb2 mode. However, for "mov" it is the non-s form that has a 16-bit encoding; the s form is never more compact.
* Added new option for static linking.Bernhard Schommer2016-02-161-0/+2
| | | | | The new option -static passes the -static flag to the linker. Bug 18066.
* Fixed regression introduced by refactoring of Driver.ml.Bernhard Schommer2016-02-151-3/+7
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* Merge pull request #86 from AbsInt/clightgen-improvedBernhard Schommer2016-02-054-90/+114
|\ | | | | Better treatment of names in the clightgen tool
| * Naming of compiler-generated temporariesXavier Leroy2016-02-051-32/+76
| | | | | | | | clightgen now gives semi-readable and relatively stable names of the form _t'1, _t'2, _t'3, etc, to compiler-generated temporaries, instead of the unreadable and unstable NNN%positive notation generated previously.
| * Restart the name generator at first_unused_ident for every function.Xavier Leroy2016-02-053-58/+38
|/ | | | This makes it easier to generate semi-meaningful names for compiler-generated temporaries in the clightgen tool.
* Also print braces around the registers.Bernhard Schommer2016-02-041-2/+7
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* Fixed missing \" in json printing for registers.Bernhard Schommer2016-02-041-2/+2
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* Added gcc cmd-line option -include.Bernhard Schommer2016-02-031-0/+3
| | | | | | | The -include option is passed to the preprocessor and -include <file> is equivalent to writting #include "<file>" as first line in the primary source file. Bug 18066.
* Merge pull request #85 from AbsInt/option_jsonXavier Leroy2016-02-024-107/+299
|\ | | | | | | Flag -doptions to save machine configuration and command-line flags to a JSON file.
| * Added version and compiler working directory to options dump.Bernhard Schommer2016-01-271-0/+4
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| * Added new option -doptions.Bernhard Schommer2016-01-272-4/+58
| | | | | | | | | | | | The new options dumps the compiler options in a json file per. This includes the clflags, compcert.ini and machine settings. Bug 17988.
| * Added printer for Configuration and finished Clflags.Bernhard Schommer2016-01-255-135/+201
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| * Started implementing a printer for Clflags.Bernhard Schommer2016-01-254-12/+80
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* | Make void always incomplete and exit on void members.Bernhard Schommer2016-02-022-2/+8
| | | | | | | | | | | | Since we cannot construct a default initializer for void types we need to exit earlier. Bug 18004.
* | Do test for wrap around on singed ocaml integers.Bernhard Schommer2016-01-281-1/+1
| | | | | | | | | | | | In parse_int it was not tested if the value of v is smaller than zero. This allowed it that certain large integers were accepted due to wrap around.
* | Allow adding of attributes in valid_assignment_attr.Bernhard Schommer2016-01-281-2/+2
|/ | | | | Implementing the same behavior as gcc anc clang. Bug 18004
* Added option to dump preprocessed source code.Bernhard Schommer2016-01-222-4/+13
| | | | The new option -dprepro allows it to keep the preprocessed source code files.
* Added warning for strict-sequences.Bernhard Schommer2016-01-211-1/+1
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* Include fix for wint_t gcc problem.Bernhard Schommer2016-01-211-12/+16
| | | | | | Gcc defines wint_t in the stddef header (even if it is not stanadard) and additionally defines it if stddef is reincluded. The fix now defines it before stddef is checked for reinclusion.
* Removed the last remains of cchecklink.Bernhard Schommer2016-01-211-2/+0
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* More unique debug types.Bernhard Schommer2016-01-143-26/+26
| | | | | | The typdef, enumerator and function_type types form the DebugTypes and DwarfTypes shared a some fields. This commits renames them in order to make them more unique and avoid potential name clashes.
* More descriptive error message for failed command.Bernhard Schommer2016-01-111-4/+14
| | | | | | | CompCert now prints if the assembler, linker or preprocessor command failed and a hint for the user to get the full command line. Bug 17894
* Added configuration to enable clightgen build.Bernhard Schommer2015-12-282-10/+14
| | | | The new configuration option -clightgen activates the build of clightgen.
* Merge branch 'master' of ↵Bernhard Schommer2015-12-281-2/+4
|\ | | | | | | ssh://ssh.absint.com/common/repositories/git/tools/compcert
| * add options for include paths also to the command line of the assembler, bug ↵Michael Schmidt2015-12-231-2/+4
| | | | | | | | 17838
* | ARM: bug in expansion of __builtin_clzllXavier Leroy2015-12-221-1/+1
| | | | | | | | Follow-up to commit f531d38
* | Add CLZ builtins for ARM and IA32Xavier Leroy2015-12-2210-7/+68
| | | | | | | | | | | | | | ARM: add __builtin_clzl, __builtin_clzll IA32: add __builtin_clzl, __builtin_clzll, __builtin_ctzl, __builtin_ctzll Add corresponding tests in tests/regression/
* | Upgrade for release 2.6.Xavier Leroy2015-12-211-1/+8
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* The return type of __builtin_clz() et al is "int", as documented and for GCC ↵v2.6Xavier Leroy2015-12-214-6/+8
| | | | compatibility, and not "unsigned int", as previously implemented.
* powerpc/Asmexpand: fix expansion of __builtin_clzllXavier Leroy2015-12-201-2/+2
| | | | The original code produces wrong results if res and al are the same register.
* clightgen: update to recent change -fstruct-return/-fstruct-passingXavier Leroy2015-12-191-4/+7
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* Update VERSION for release 2.6Xavier Leroy2015-12-191-2/+2
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* Update Changelog for release 2.6.Xavier Leroy2015-12-191-0/+49
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* Merge pull request #79 from AbsInt/config-optionXavier Leroy2015-12-192-8/+31
|\ | | | | Add "-conf <filename>" command-line option. Support relative paths for stdlib and tools.
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