Displaying 2 results from an estimated 2 matches for "rep_movsd".
2012 Aug 13
2
[LLVMdev] x86 REP-prefixed instructions seem to be dropped by instruction decoder?
...ot; | ./bin/llvm-mc -disassemble
.section __TEXT,__text,regular,pure_instructions
movsd
(from llvm trunk)
0xF3 is the REP prefix, so the printed instruction should be 'rep
movsd', however all that is printed is 'movsd'. It seems that there is
an instruction enum for REP_MOVSD, but it isn't emitted in the
generated .inc file? Is this a bug/oversight, or is there something I
don't understand about the instruction decoding infrastructure and the
MCInst class?
2012 Aug 14
0
[LLVMdev] x86 REP-prefixed instructions seem to be dropped by instruction decoder?
....section __TEXT,__text,regular,pure_instructions
> movsd
>
> (from llvm trunk)
>
> 0xF3 is the REP prefix, so the printed instruction should be 'rep
> movsd', however all that is printed is 'movsd'. It seems that there is
> an instruction enum for REP_MOVSD, but it isn't emitted in the
> generated .inc file? Is this a bug/oversight, or is there something I
> don't understand about the instruction decoding infrastructure and the
> MCInst class?
It looks like a bug. Would you mind reporting it in llvm.org/bugs? Thanks.
Cheers,
Rafael