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2008 Mar 27
0
[LLVMdev] Checked arithmetic
> Except that some aspects of the host platform leak through > to .bc files. This may or may not be a problem. I know a bit about how Michael Norrish dealt with this sort of thing in his formal semantics for C. For example, integer width is modeled as a constant, but one with an unspecified value. Other C level choices such as order of evaluation of function arguments are modeled using nondeterministic choice. My understanding is that the...
2008 Mar 27
4
[LLVMdev] Checked arithmetic
John Regehr wrote: > Say on that note here's something that I want to see: a formal semantics > for LLVM in for example higher order logic. This would probably not be > that difficult. Except that some aspects of the host platform leak through to .bc files. This may or may not be a problem. > Once the semantics exists, you can either prove once and for all the that > each