[llvm-dev] simplifycfg not happening?

Xiangyang Guo via llvm-dev llvm-dev at lists.llvm.org
Sat Sep 19 21:55:17 PDT 2015


I'm not sure the first bb. Maybe the label name explains itself? My guess
is that there is some fast overflow check happening before this function
can be executed? Just a guess. Hope other people can help you.

2015-09-20 0:46 GMT-04:00 Russell Wallace <russell.wallace at gmail.com>:

> On Sun, Sep 20, 2015 at 5:35 AM, Russell Wallace <
> russell.wallace at gmail.com> wrote:
>
>> The first block still remains in any case. Is the first block needed for
>> some purpose I'm not taking into account?
>>
>
> Oh wait, this is because there cannot be any branches to the first block
> in a function?
>
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