search for: weak_directive

Displaying 2 results from an estimated 2 matches for "weak_directive".

2012 Jun 13
0
[LLVMdev] [NVPTX] For linkonce_odr NVPTX generates .weak, but even newest PTXAS can't handle it
...port. Unfortunately, this does not appear to have a trivial fix. 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 MCAsmStream...
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