[LLVMdev] Floating-Point Overflow check

[John McCall]

On Jul 26, 2010, at 4:12 AM, Steffen Geißinger wrote:
> i know that the result is infinte, but there are sill flags in the FPU which indicate that an overflow, underflow or div by zero occured.
> So isn't there an easy way to check if one of those flags is set?

I don't think so;  we probably don't select those instructions at all.  I'm not sure what the best way to select them would be, to be honest;  maybe a processor-specific intrinsic.  I'd suggest filing a bug.

John.