[Bug target/118446] __builtin_iseqsig does not raise exception when supplied with NaN on Cortex-M at -O1 or higher

[azoff at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118446

--- Comment #2 from Torbjorn SVENSSON <azoff at gcc dot gnu.org> ---
No, I don't think it's related as armv8-a produces:

$ arm-none-eabi-gcc -march=armv8-a -mfloat-abi=hard -mfpu=neon-fp-armv8 -Os -S
-o - foo.c -dp
...
ffalse:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        vcmpe.f32       s0, s1  @ 51    [c=4 l=4]  *cmpsf_trap_vfp/0
        vmrs    APSR_nzcv, FPSCR        @ 52    [c=4 l=4]  *movcc_vfp
...