"David Nadlinger" wrote in message
news:[email protected]...
By the way, this (just emitting an x86 idiv even if it the operands are
known to trap) will likely be a pain to implement for LDC. There has been
an (overly aggressive, on the side of two LLVM devs) discussion about this
a year ago or so:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-April/060930.html.
Personally, I find their stance highly troublesome, as they have
introduced undefined behavior that is hard to circumvent for practically
no potential performance gain. I just hope we can somehow avoid emitting a
branch on every integer division…
That's annoying, but I guess it makes sense given how much division varies
across platforms.
