[LLVMdev] frontend support for cross-compilation?
John Regehr
regehr at cs.utah.edu
Tue Jul 1 21:45:09 PDT 2008
Thanks Chris. I'll follow any ongoing discussion about this. Unless I'm
missing something, customizable widths for integer types is necessary to
achieve source-level compatibility with existing cross-compilers.
It would be great to see the fronend being parameterized by integer widths
at runtime. There would be no noticable loss of efficiency and this would
avoid the obnoxious and error-prone situation of keeping many C frontends
sitting around.
FWIW CIL just lately became parameterizable at runtime with
machine-specific information and it's really handy.
John
> There was a recent discussion about this specific issue. We need to
> eliminate the implicit sign/zero extend to 32 bit logic from the code
> generator and have the front-ends insert them.
>
> -Chris
>
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