[llvm] r223137 - [Statepoints 3/4] Statepoint infrastructure for garbage collection: SelectionDAGBuilder

[Philip Reames]

On 12/04/2014 09:08 AM, Philip Reames wrote:
>
> On 12/04/2014 08:38 AM, Joerg Sonnenberger wrote:
>> On Tue, Dec 02, 2014 at 06:50:36PM -0000, Philip Reames wrote:
>>> Author: reames
>>> Date: Tue Dec  2 12:50:36 2014
>>> New Revision: 223137
>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=223137&view=rev
>>> Log:
>>> [Statepoints 3/4] Statepoint infrastructure for garbage collection: 
>>> SelectionDAGBuilder
>> This crashes on the attached input, build with -O2.
> Looking into this now.  I'm very surprised by this, there's nothing in 
> this patch which should trigger for code which doesn't contain 
> statepoints.
I spotted a typo that might be causing this.  There was a cast used in 
place of what was intended to by a dyn_cast test when checking to see if 
an Instruction was a CallInst.  I'm still building Clang to be able to 
replicate your actual example, but I'm going to submit a premptive 
change in the hope it fixes your crash.
>
>>
>> Joerg
>