[LLVMdev] Unimplemented documentation
gohman at apple.com
Sat Jan 24 11:01:01 CST 2009
On Jan 24, 2009, at 4:34 AM, Lennart Augustsson
<lennart at augustsson.net> wrote:
> Is there some documentation about what has not been implemented yet?
I've started adding notes to
Historically this document has been used to describe just the LLVM IR,
and not what specific consumers of it do or don't support, but codegen
is a very important consumer, so I've started adding notes about its
> I'm trying to use vectors and I just run into one thing after another
> that seem to be missing.
> (I.e., fcmp on vectors doesn't work; trying to do the same thing with
> expanded instructions doesn't work; select on a vector doesn't work)
A common thread here is that the code generator doesn't support
vectors of booleans very well yet. Comparisons and selects are very
useful (and are also the first step towards more advanced conditional
vector support), so we'd really like to see this fixed, though it will
depend on someone stepping forward to do the work.
What do you mean by "expanded instructions"?
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