On Wed, Aug 15, 2018 at 7:02 AM, Jonathan Wakely <jwakely....@gmail.com> wrote: > On Wed, 15 Aug 2018 at 11:33, Jeffrey Walton via cfarm-users > <cfarm-users@lists.tetaneutral.net> wrote: >> >> I'm catching a SIGILL on POWER7 ppc64-le machine. I compiled the >> source with -mcpu=power8 so I could enable some builtins I may need. >> Use of the builtins is guarded at runtime. (This is the classic distro >> model, where most source code is compiled for a minimum machine but >> higher ISAs are guarded at runtime). >> >> GCC converted some C code into POWER8 code. The SIGILL is happening in >> the function prologue due to use of mtfprwz. Apparently mtfprwz is a >> ISA 2.07B/POWER8 instruction. >> >> My question is, how do I tell GCC to use a different ISA than I am using? > > Doesn't this belong on gcc-h...@gcc.gnu.org not the cfarm users list?
Oh, my bad... I saw the GCC but it was the compile farm and not GCC-help. Jeff _______________________________________________ cfarm-users mailing list cfarm-users@lists.tetaneutral.net https://lists.tetaneutral.net/listinfo/cfarm-users
