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Hi! It is said in http://llvm.org/docs/LangRef.html#i_atomicrmw there is an atomicrmw opcode. But: store i8 %2, i8* %tape1.sub %3 = atomicrmw add i8* %tape1.sub, i8 1 acquire fails with: llc: test.bc:13:9: error: expected instruction opcode %3 = atomicrmw add i8* %tape1.sub, i8 1 acquire How can I do *ptr = *ptr + val with LLVM ?

...e video output to cooperate with the projector. I guess that should teach me to not try to stream and present using the same box. 8-) Fortunately we had tape running. I finally had time to get those encoded and up on the web: http://techweb.rfa.org/images/dclug/DCLUG-2005-06-08-icecast-and-lac2005-tape1.theora.ogg http://techweb.rfa.org/images/dclug/DCLUG-2005-06-08-icecast-and-lac2005-tape2.theora.ogg My talk started about 30% into the first tape. Przemek, the LUG organizer, stalled for me for a bit while I tried frantically to recover my laptop. Anyway, there they are. I welcome any feedback....