compcert - CompCert fork with minor modifications for Vericert.

	Commit message (Collapse)	Author	Age	Files	Lines
*	Make casts of pointers to _Bool semantically well defined (again).	Xavier Leroy	2016-03-02	1	-4/+4
\| \| \| \| \| \|	In compCert 2.5 the semantics of pointer comparisons against the NULL pointer was made more accurate by making it undefined if the pointer is invalid (outside bounds). Technical difficulties prevented this change from being propagated to the semantics of casts from pointer types to the _Bool type, which involves an implicit pointer comparison against NULL. Hence, this kind of casts was temporarily given undefined semantics. This commit makes pointer-to-_Bool casts semantically defined (again), provided the pointer is valid. This reinstates the equivalence between casts to _Bool and comparisons != 0. The technical difficulties mentioned above came from the translation of assignments in a value context in the SimplExpr pass. The pass was lightly modified to work around the issue.
*	Updated PR by removing whitespaces. Bug 17450.	Bernhard Schommer	2015-10-20	1	-31/+31
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*	Omission: forgot to treat pointer values in bool_of_val and sem_notbool.	Xavier Leroy	2015-03-29	1	-2/+2
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*	Represent struct and union types by name instead of by structure.	Xavier Leroy	2014-12-22	1	-9/+9
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*	- Support "switch" statements over 64-bit integers	xleroy	2014-08-17	1	-5/+7
\| \| \| \| \| \| \| \| \| \| \| \| \|	(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
*	Simpler, more robust emulation of calls to variadic functions:	xleroy	2013-12-28	1	-10/+10
\| \| \| \| \| \| \| \| \| \| \| \| \| \|	- 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
*	Remove some useless "Require".	xleroy	2012-12-30	1	-1/+0
\| \| \| \| \| \| \|	Update ARM port. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2085 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
*	Merge of the clightgen branch:	xleroy	2012-12-29	1	-9/+9
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	- 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
*	Clight: split off the big step semantics in ClightBigstep.	xleroy	2012-10-14	1	-0/+583
	Cstrategy: updated the big-step semantics with Eseqand and Eseqor. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2062 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e