[LLVMdev] Why does "uwtable" prevent optimizing Invoke -> Call?

[Reid Kleckner]

On Thu, Jan 22, 2015 at 4:40 AM, Björn Steinbrink <bsteinbr at gmail.com>
wrote:

> On 2015.01.22 10:42:51 +0100, Björn Steinbrink wrote:
> > an effect on that function call. So AFAICT either I'm missing something
> > here, or clang should always emit invoke, disabling the optimization for
> > functions that have the uwtable attribute was wrong and the change
> > should be reverted.
>
> I meant to write "either I'm missing something, or clang should always
> emit invoke instructions _or_ disabling the optimization was wrong".


I agree, I don't see how uwtable has anything to do with this optimization.
There must be something wrong with our CFI instead.
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