[llvm-dev] When a libcall will be generated?
陳韋任 via llvm-dev
llvm-dev at lists.llvm.org
Fri May 19 06:44:24 PDT 2017
Hi All,
I am looking at a linker error under O2:
undefined symbol __lshrdi3
I have two questions here:
1. Does that mean our libgcc (?) doesn't implement __lshrdi3? Or more
generally, why I have
such linker error?
2. Seems some operations are combined, and replaced with __lshrdi3 call.
I am interested in
when such libcall will be generated? Could you show me one example so
that I can trace
the LLVM source code on my own?
Thanks.
Regards,
chenwj
--
Wei-Ren Chen (陳韋任)
Homepage: https://people.cs.nctu.edu.tw/~chenwj
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