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Re: dragonegg in FSF gcc?

On 04/11/2010 06:26 PM, Duncan Sands wrote:
Hi Robert,

b) better behavior for undefined cases 

this is one of the problems with using LLVM with the Ada front-end.
LLVM makes pretty aggressive deductions when it sees undefined
behaviour

These do not seem to point at LLVM's optimizer bugs/aggressiveness, but rather at expressiveness of the IR. GENERIC benefited from years of working on the Ada front-end, and though it was indeed a good deal of work to iron out all the bugs, it is likely that a different compiler infrastructure does not have all the nuances.

Paolo

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