[llvm] r310481 - [ValueTracking] Honour recursion limit.
Chad Rosier via llvm-commits
llvm-commits at lists.llvm.org
Wed Aug 9 09:11:05 PDT 2017
On 8/9/2017 11:19 AM, Davide Italiano wrote:
> On Wed, Aug 9, 2017 at 8:13 AM, Davide Italiano via llvm-commits
> <llvm-commits at lists.llvm.org> wrote:
>> Author: davide
>> Date: Wed Aug 9 08:13:50 2017
>> New Revision: 310481
>> URL: http://llvm.org/viewvc/llvm-project?rev=310481&view=rev
>> [ValueTracking] Honour recursion limit.
>> The recently improved support for `icmp` in ValueTracking
>> (r307304) exposes the fact that `isImplied` condition doesn't
>> really bail out if we hit the recursion limit (and calls
>> `computeKnownBits` which increases the depth and asserts).
> Hans, I think this could be considered as a candidate to be backported
> to 5 [cc: Petr & Chad].
I agree and this should be fairly safe for back porting.
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