[LLVMdev] Exception handling slowdown?

[Duncan Sands]

Hi John,

On 07/07/12 02:20, John McCall wrote:
> On Jul 6, 2012, at 3:48 PM, Bill Wendling wrote:
>> On Jul 5, 2012, at 1:33 AM, Duncan Sands wrote:
>>> Hi Bill,
>>>
>>>> Nothing that I'm aware of has changed with EH. Is it possible to bisect the problem?
>>>
>>> I don't see any relevant LLVM changes, so I guess clang C++ compilation slowed
>>> down due to some clang changes.  I'm not going to investigate this.
>>>
>> Crumbs.
>>
>> John, Do you know of anything that went into clang that could account for EH slowdowns?
>
> Is this Linux?  Is it possibly just Objective-C tests?  There have been several patches about ObjC runtimes recently that affected exceptions.

yes, it is linux.  While the worst slowdowns were in Objective-C tests, there
were lots of non-objc slowdowns too (see list in quoted message in Bill's
earlier email).

Ciao, Duncan.