[cfe-dev] Stupid 64-bit divide question

[David Chisnall]

These functions should be found in compiler-rt:

http://compiler-rt.llvm.org/

David

On 30 Sep 2010, at 11:16, per at lumai.se wrote:

> Hi all,
> 
> I am experimenting with compiling C code under Windows (MSVC env., _not_ 
> mingw) via COFF -> exe file using clang x.c -emit-llvm and llc 
> -filetype=obj followed by linking using the MSVC linker. This works well 
> except that some 64 bit arithmetic operations generate libcalls to 
> functions like __divdi3 which have different names/uses in the MSVC 
> runtime (i.e. __divdi3 ~= __alldiv in libcmt.lib). I assume that 
> __divdi3 is something GNU specific. Is there a simple way to influence 
> which libcalls are emitted? Any attempts to define my own __divdi3 seem 
> to be ignored.
> 
> cheers,
> Per Lindén
> 
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