Division by zero
David Nadlinger via Digitalmars-d
digitalmars-d at puremagic.com
Fri Oct 3 08:09:32 PDT 2014
On Friday, 3 October 2014 at 14:54:17 UTC, Daniel Murphy wrote:
> https://issues.dlang.org/show_bug.cgi?id=5908
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…
Cheers,
David
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