[llvm-dev] Scaling to many basic blocks

[David Blaikie via llvm-dev]

On Sat, Aug 22, 2015 at 5:46 PM, Russell Wallace via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> On Sat, Aug 22, 2015 at 11:57 PM, Michael Zolotukhin <
> mzolotukhin at apple.com> wrote:
>
>> Hi,
>>
>> Several passes would have troubles with such code (namely, GVN and
>> JumpThreading).
>
>
> Can you just choose not to run those particular passes? I suppose the big
> problem would be if there's a problem with the code generation and related
> stuff like instruction scheduling and register allocation - is that likely
> to be the case?
>

I seem to recall the sanitizers hit some scaling issues with lots of small
basic blocks (with lots of variables) in the register allocator.

- David


>
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