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* Allow string_literals_list in _Static_assert.Bernhard Schommer2020-07-272-24/+25
| | | | | | Not all pre-processors concatenate string literal lists, however they are allowed in _Static_assert. This is similar to the rules for inline assembly etc.
* Add test for __builtin_sqrt and __builtin_fabsfXavier Leroy2020-07-272-0/+7
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* Add __builtin_sqrt as synonymous for __builtin_fsqrtXavier Leroy2020-07-277-5/+8
| | | | __builtin_sqrt (no "f") is the name used by GCC and Clang.
* Refactor regression testing of built-in functionsXavier Leroy2020-07-2713-110/+447
| | | | | | Share the testing code for built-in functions that are available on all target platforms. Improve testing of __builtin_clz* and __builtin_ctz*
* Move declarations of __builtin_clz* and __builtin_ctz* to C2C.mlXavier Leroy2020-07-275-46/+12
| | | | These functions are now available on all targets.
* AArch64 implementation of __builtin_ctz*Xavier Leroy2020-07-273-1/+11
| | | | Using the "rbit" instruction (reverse bits).
* RISC-V implementation of __builtin_clz* and __builtin_ctz*Xavier Leroy2020-07-272-0/+134
| | | | Using binary search loops expanded at point of use.
* Add support for __builtin_fabsfXavier Leroy2020-07-274-0/+13
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* No need to process __builtin_fabs in $ARCH/Asmexpand.mlXavier Leroy2020-07-275-12/+0
| | | | __builtin_fabs has already been expanded in backend/Selection.v .
* More checks for __builtin_va_start (#250)Bernhard Schommer2020-07-211-6/+10
| | | | We check that this builtin function is only called from within a variadic function and has the correct number of arguments.
* cparser/handcrafted.messages: missing blank lineXavier Leroy2020-07-211-0/+1
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* Updated handcrafted.messages.Bernhard Schommer2020-07-211-0/+108
| | | | | Added error descriptions for the new syntax errors introduced by '_Static_assert'.
* Support _Static_assert from C11Xavier Leroy2020-07-217-1060/+1116
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* Support __builtin_constant_p as in GCC and Clang (#367)Xavier Leroy2020-07-211-0/+10
| | | | | Returns 1 if the argument is a constant expression, 0 otherwise. Closes: #366
* Use the correct location for Slabaled in transform.Bernhard Schommer2020-07-211-2/+2
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* Added error for redefined builtin.Bernhard Schommer2020-07-203-0/+6
| | | | | | We check in the initial environment if a function is already defined to avoid redefinition of functions that are part of the builtin environment.
* Added missing semicolon.Bernhard Schommer2020-07-151-1/+1
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* Bytecode-only build, continuedXavier Leroy2020-07-151-0/+9
| | | | | | | If ocamlopt is not available, use ocamlc instead of ocamlopt to build auxiliary tools (tools/modorder, tools/ndfun). This is a follow-up to commit 9af28924.
* Revised detection of menhirLib directory, continued (#365)Xavier Leroy2020-07-151-4/+4
| | | | | | | This is a follow-up to commit 3b1f3dd5, which was wrong in that errors in a shell pipeline were not correctly detected. Fixes: #363
* No trailing commas for --version-file option.Bernhard Schommer2020-07-091-1/+1
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* Fix typo.Bernhard Schommer2020-07-081-1/+1
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* Revert "Use the same version string."Bernhard Schommer2020-07-081-3/+10
| | | | This reverts commit 1a01ad629109cdb60fddae3787e3a589d20e9790.
* Use the same version string.Bernhard Schommer2020-07-081-10/+3
| | | | | | The version string dumped in the file should be the same as the version string printed by `-version`. The option is also not printed by `-help` since it is for internal use only.
* Remove no longer needed option enforce-buildnrBernhard Schommer2020-07-081-10/+1
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* Introduce additional "branch" build information.Bernhard Schommer2020-07-087-13/+20
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* Add option to print version information in fileBernhard Schommer2020-07-081-1/+17
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* Bytecode-only build (#243)Xavier Leroy2020-07-072-4/+29
| | | | | | If ocamlopt (the native-code OCaml compiler) is not available, fall back to building with ocamlc (the bytecode OCaml compiler). Fixes: #359
* Revised detection of menhirLib directory (#248)Xavier Leroy2020-07-071-2/+6
| | | | | Use `ocamlfind query menhirLib` in preference to `menhir --suggest-menhirLib`. Fixes: #363
* Added asserts for constraints of PowerPC builtinsBernhard Schommer2020-07-011-0/+6
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* Fix typo in name of builtin function.Bernhard Schommer2020-07-011-1/+1
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* Added missing hint database name.Bernhard Schommer2020-06-301-1/+1
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* Move shared code in new file.Bernhard Schommer2020-06-2817-96/+46
| | | | | The name_of_register and register_of_name function are shared between all architectures and can be moved in a common file.
* Remove the `can_reserve_register` function.Bernhard Schommer2020-06-2810-19/+1
| | | | | The function is in fact just a call to the function`is_callee_save_register` from `Conventions1.v`.
* Use library function.Bernhard Schommer2020-06-281-4/+1
| | | | | | | The function String.uppercase was deprecated and the replacement function String.upercase_ascii was only available from OCaml 4.03.0. Since the minimal OCaml version is now 4.05.0 we can use the function String.upercase_ascii.
* Use Hashtbl.find_opt.Bernhard Schommer2020-06-288-9/+8
| | | | | Replace the pattern `try Some (Hashtbl.find ...) with Not_found -> None` by a call to the function Hashtbl.find_opt.
* Eliminate known builtins whose result is ignoredXavier Leroy2020-06-252-40/+54
| | | | | | | | | | | | | | | A typical example is `(void) __builtin_sel(a, b, c)`. It is safe to generate zero code for these uses of builtins because builtins whose semantics are known to the compiler are pure. Other builtins with side effects (e.g. `__builtin_trap`) are not known and will remain in the compiled code. It is useful to generate zero code for these uses of builtins because some of them (e.g. `__builtin_sel`) must be transformed into proper CminorSel expressions during instruction selection. Otherwise, they propagate all the way to ExpandAsm, causing a "not implemented" error there.
* Improve printing of builtin function invocationsXavier Leroy2020-06-251-0/+3
| | | | In particular __builtin_sel.
* Preliminary support for Coq 8.12Xavier Leroy2020-06-212-4/+4
| | | | | | | Based on testing with beta-1 release. The deprecation warning about the "omega" tactic is ignored while we decide when to switch to "lia" instead.
* Transform non-recursive Fixpoint into DefinitionXavier Leroy2020-06-213-3/+3
| | | | | | | As detected by the new warning in Coq 8.12. The use of Fixpoint here is not warranted and either an oversight or a leftover from an earlier version.
* SimplExpr: remove unused definition "sd_cast_set"Xavier Leroy2020-06-151-2/+0
| | | | Follow-up to commit 070babef.
* SimplExpr: better translation of casts in a "for effects" contextXavier Leroy2020-06-153-136/+166
| | | | | | | | This is useful for statements such as `(void) expr;` where we would prefer not to explicitly compute intermediate values of type `void` and store them in Clight temporary variables. See issue #361 for a real-world occurrence of this phenomenon.
* Compatibility with coq 8.11.2Bernhard Schommer2020-06-081-1/+1
| | | | Updated configure script to also allow coq version 8.11.2
* Improve portability of the test for annotations inclightgenXavier Leroy2020-06-052-0/+4
| | | | __builtin_ais_annot is not supported for macOS nor for Cygwin.
* clightgen: fix the printing of annotationsXavier Leroy2020-06-052-59/+14
| | | | | | | | | | | | The printing of EF_annot and EF_annot_val was missing the extra "kind" parameter introduced in commit 6a010b4. Also: the automatic translation of annotations into Coq assertions was confusing and prevented other uses of __builtin_annot statements in conjunction with clightgen. I believe it was never used. This commit removes this translation. Closes: #360
* clightgen: fix usage messageXavier Leroy2020-06-011-2/+2
| | | | Closes: #358
* clightgen -short-idents : do not use $"xxx" notation everXavier Leroy2020-06-011-1/+1
| | | | | | | | In the original code, collisions could occur: an identifier could be numbered with a number that happens to be equal to its canonical encoding. This was harmless but confusing. Closes: #358
* Add a canonical encoding of identifiers as numbers and use it in clightgen ↵Xavier Leroy2020-05-194-20/+204
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (#353) Within CompCert, identifiers (names of C functions, variables, types, etc) are represented by unique positive numbers, sometimes called "atoms". In the original implementation, atoms 1, 2, ..., N are assigned to identifiers as they are encountered. The resulting number are small and are efficient when used as keys in data structures such as PTrees. However, the mapping from C source-level identifiers to atoms differs between compilation units. This is not a problem for CompCert but complicates CompCert-based verification tools that need to combine several compilation units. This commit introduces an alternate implementation of atoms, suggested by Andrew Appel. The choice between implementations is governed by the Boolean reference `Camlcoq.use_canonical_atoms`. In the alternate implementation, identifiers are converted to bit sequences via a Huffman encoding, then the bits are represented as positive numbers. The same identifier is always represented by the same number. However, the numbers are usually bigger than in the original implementation, making PTree operations slower: lookups and updates take time linear in the length of the identifier, instead of logarithmic time in the number of identifiers encountered. The CompCert compiler (the `ccomp` executable) still uses the original implementation, but the `clightgen` tool used in conjunction with the VST program logic can use either implementations: - The alternate "canonical atoms" implementation is used by default, and also if the `-canonical-idents` option is given. - The original implementation is used if the `-short-idents` option is given. Closes: #222 Closes: #311
* Move Commandline to the lib/ directoryXavier Leroy2020-05-052-0/+0
| | | | | | The Commandline module is reusable in other projects, and its license (GPL) allows such reuse, so its natural place is in lib/ rather than in driver/
* Update the list of dual-licensed filesXavier Leroy2020-05-051-2/+2
| | | | Closes: #351
* Dual-license aarch64/{Archi.v,Cbuiltins.ml,extractionMachdep.v}Xavier Leroy2020-05-053-0/+9
| | | | | | The corresponding files in all other ports are dual-licensed (GPL + non-commercial), there is no reason it should be different for aarch64.
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