Hi all, While running an ARMv8 benchmark, I found that an instruction Valgrind appears to choke on.
For reference, the error message follows: "The instruction is legitimate but Valgrind doesn't handle it, i.e. it's > Valgrind's fault. If you think this is the case or you are not sure, > please let us know and we'll try to fix it." I tracked down the problem instruction: a vectorized form of the double precision 'fmaxnm' instruction to compare two double precision numbers. The scalar version of this instruction runs fine, and I can verify that the vectorized instruction only gets generated by gcc when using the tree-vectorize flag (and 03). 405720: 4e60c508 fmaxnm v8.2d, v8.2d, v0.2d Does anyone know if: 1) Vectorized double-precision instructions are unimplemented in valgrind, 2) This particular instruction has been unimplemented, or 3) The platform I'm using is doing something sticky with these instructions? Thanks, Karthik
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