On Mon, Jun 1, 2020 at 9:58 PM Segher Boessenkool <seg...@kernel.crashing.org> wrote: > > On Tue, Jun 02, 2020 at 01:26:37AM +0200, Daniel Kolesa wrote: > > On Mon, Jun 1, 2020, at 23:28, Joseph Myers wrote: > > Are you sure this would be a new port? Glibc already works in this > > combination, as it seems to me it'd be best if it was just a variant of the > > existing 32-bit PowerPC port, sharing most conventions besides endianness > > with the BE port. > > That's right. Except it isn't an "official" existing port, never has > been "officially" supported. > > > 128-bit IEEE long double would not work, since that relies on VSX being > > present (gcc will explicitly complain if it's not). I'd be all for using > > 64-bit long double, though (musl already does, on all ppc ports). > > The current IEEE QP float support requires VSX for its emulation, yes > (possibly even Power8?) ...
I believe Steven Munroe has an implementation that includes emulation for lesser POWER architectures at https://github.com/munroesj52/pveclib. If I am not mistaken, Munroe 's library supports back to POWER7. Modern GCC is fine. Clang has problems because it lacks support for ISO/IEC TS 18661 or N2341 (http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2341.pdf). Jeff
