Displaying 2 results from an estimated 2 matches for "linkoncedirective".
2012 Jun 13
0
[LLVMdev] [NVPTX] For linkonce_odr NVPTX generates .weak, but even newest PTXAS can't handle it
...ix. As you mentioned, it is not the NVPTX back-end itself that is
emitting the ".weak", but the default MCAsmStreamer implementation.
Setting WeakDefDirective in the NVPTXMCAsmInfo class seems to trigger an
emission of ".weak_directive", which doesn't help things. Setting
LinkOnceDirective helps the ".weak" case, but there is code in LLVM that
causes a special label to be produced when LinkOnceDirective is set, which
again messes with the PTX assembler.
This is a case where we really need a custom MCAsmStreamer, but this will
take a bit of time. Is this a blocker for you?...
2012 Jun 12
2
[LLVMdev] [NVPTX] For linkonce_odr NVPTX generates .weak, but even newest PTXAS can't handle it
Dear LLVM NVPTX maintainers,
Just to have the issue recorded, I don't know how important it is:
clang generates linkonce_odr out of __inline__, and NVPTX generates .weak
out of linkonce_odr (how it happens - a big question, btw, because I can't
find anything related in NVPTX asm printer - does it chain to some other
printer?), and finally ptxas (both 4.2 and 5) fails to compile it to