[LLVMdev] Difficulty with reusing DAG nodes.
Eli Friedman
eli.friedman at gmail.com
Thu Sep 11 19:50:50 PDT 2008
On Thu, Sep 11, 2008 at 6:09 PM, Richard Pennington <rich at pennware.com> wrote:
> I'm trying to implement *MUL_LOHI for my processor.
>
> My processor has mulxss (e.g.) that gives the 32 high bits of a 64 bit
> multiply.
I haven't looked at the rest of the email carefully, but why aren't
you just implementing MULHU and MULHS? There's no point to
implementing the *MUL_LOHI variants if the processor doesn't have
them.
-Eli
More information about the llvm-dev
mailing list