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* more proofDavid Monniaux2019-09-051-0/+16
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* Remove coq warnings (#28)Bernhard Schommer2017-09-221-6/+6
| | | | Replace deprecated functions and theorems from the Coq standard library (version 8.6) by their non-deprecated counterparts.
* Introduce register pairs to describe calling conventions more preciselyXavier Leroy2016-05-171-2/+2
| | | | | | | | | | | | | This commit changes the loc_arguments and loc_result functions that describe calling conventions so that each argument/result can be mapped either to a single location or (in the case of a 64-bit integer) to a pair of two 32-bit locations. In the current CompCert, all arguments/results of type Tlong are systematically split in two 32-bit halves. We will need to change this in the future to support 64-bit processors. The alternative approach implemented by this commit enables the loc_arguments and loc_result functions to describe precisely which arguments need splitting. Eventually, the remainder of CompCert should not assume anything about splitting 64-bit types in two halves. Summary of changes: - AST: introduce the type "rpair A" of register pairs - Conventions1, Conventions: use it when describing calling conventions - LTL, Linear, Mach, Asm: honor the new calling conventions when observing external calls - Events: suppress external_call', no longer useful - All passes from Allocation to Asmgen: adapt accordingly.
* Update the back-end proofs to the new linking framework.Xavier Leroy2016-03-061-48/+33
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* Updated PR by removing whitespaces. Bug 17450.Bernhard Schommer2015-10-201-62/+62
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* Upgrade the ARM port to the new builtins.Xavier Leroy2015-08-241-2/+4
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* Some "feel good" proofs about avail sets.Xavier Leroy2015-08-231-0/+171
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* Track the locations of local variables using EF_debug annotations.Xavier Leroy2015-08-231-0/+402
SimplLocals: - record locations of stack-allocated variables with annotations (of kind 5) at the beginning of the function; - mark every assignment to non-stack-allocated variables with an annotation of kind 2. Debugvar: (new pass!) - perform availability analysis for debug annotations of kind 2 - insert "start of live range" and "end of live range" annotations (kind 3 and 4) to delimit intervals of PCs where the location of a local variable is known.