compcert - CompCert fork with minor modifications for Vericert.

	Commit message (Collapse)	Author	Age	Files	Lines
*	Stricter control of permissions in memory injections and extensions	Xavier Leroy	2016-06-22	1	-0/+11
\| \| \| \|	As suggested by Lennart Beringer, this commits strengthens memory injections and extensions so as to guarantee that the permissions of existing memory locations are not increased by the injection/extension. The only increase of permissions permitted is empty locations in the source memory state of the injection/extension being mapped to nonempty locations.
*	Update the back-end proofs to the new linking framework.	Xavier Leroy	2016-03-06	1	-509/+611
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*	Updated PR by removing whitespaces. Bug 17450.	Bernhard Schommer	2015-10-20	1	-207/+207
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*	Refactoring of builtins and annotations in the back-end.	Xavier Leroy	2015-08-21	1	-47/+35
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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.
*	Long-overdue renaming: val_inject -> Val.inject, etc, for consistency with ↵	Xavier Leroy	2015-04-30	1	-17/+17
\| \| \| \|	Val.lessdef, etc.
*	Extend annotations so that they can keep track of global variables and local ↵	Xavier Leroy	2015-03-27	1	-0/+77
\| \| \| \| \| \| \| \| \| \|	variables whose address is taken. - CminorSel, RTL: add "annot" instructions. - CminorSel to Asm: use type "annot_arg" for arguments of "annot" instructions. - AST, Events: simplify EF_annot because constants are now part of the arguments. Implementation is not complete yet.
*	Introduce symbol environments (type Senv.t) as a restricted view on global ↵	Xavier Leroy	2014-11-26	1	-3/+3
\| \| \| \|	environments (type Genv.t). Use symbol environments instead of global environments for external functions (module Events).
*	Verification of the Unusedglob pass (removal of unreferenced static global ↵	Xavier Leroy	2014-11-24	1	-0/+1256
	definitions). Assorted changes to ia32/Op.v. PowerPC and ARM need updating.