DMD 2.090.1: SIGILL, Illegal instruction on (ahem) intel Pentium III

[kdevel]

On Thursday, 27 February 2020 at 19:24:39 UTC, Johan wrote:
> LDC will work fine if told what processor you have: 
> https://d.godbolt.org/z/5hrzgm
> -m32 -mcpu=pentium3   (-mcpu=native should also work).

When I "cross compile" on an AMD 64 Bit machine for pentium3

    [AMD 64 bit] $ ldc2 -m32 -mcpu=pentium3 --linker=bfd vec.d

and execute the binary on the Pentium-III I get

    [PIII] $ gdb ./vec
    [...]
    This GDB was configured as "i586-suse-linux".
    For bug reporting instructions, please see:
    <http://bugs.opensuse.org/>...
    Dwarf Error: wrong version in compilation unit header (is 4, 
should be 2) [in module /[...]/tmp/vec]
    (gdb) r
    Starting program: /[...]/tmp/vec
    (no debugging symbols found)
    (no debugging symbols found)
    [Thread debugging using libthread_db enabled]

    Program received signal SIGILL, Illegal instruction.
    0x08051baa in ?? ()

Disassembly on the AMD 64 it reveals that ldc also emits the 
movds instructions:

    0x08051ba2 <+434>:	call   0x804f680 
<_D2rt5minfo11ModuleGroup6__ctorMFNbNcNiAyPS6object10ModuleInfoZSQCkQCkQCh>
    0x08051ba7 <+439>:	sub    $0x8,%esp
    0x08051baa <+442>:	movsd  0x30(%esp),%xmm0
    0x08051bb0 <+448>:	movsd  0x38(%esp),%xmm1