foad added a comment.

In D114957#3166948 <https://reviews.llvm.org/D114957#3166948>, @b-sumner wrote:

> In D114957#3166936 <https://reviews.llvm.org/D114957#3166936>, @foad wrote:
>
>> In D114957#3166858 <https://reviews.llvm.org/D114957#3166858>, @yaxunl wrote:
>>
>>> In D114957#3166817 <https://reviews.llvm.org/D114957#3166817>, @foad wrote:
>>>
>>>> This is a flag-day change to the signatures of the LLVM intrinsics and the 
>>>> OpenCL builtins. Is that OK?
>>>
>>> This breaks users' code. If we have to do this, at least let clang emit a 
>>> pre-defined macro e.g. `__amdgcn_bvh_use_vec3__`=1 so that users can make 
>>> their code work before and after the change.
>>
>> I don't know anything about OpenCL macros. Is it good enough to put this in 
>> `AMDGPUTargetInfo::getTargetDefines`:
>>
>>   if (Opts.OpenCL)
>>     Builder.defineMacro("__amdgcn_bvh_use_vec3__");
>>
>> Does it need tests, documentation, etc?
>
> But how long would that be carried?  And then deprecated?

Then do you think the patch is OK as-is?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D114957/new/

https://reviews.llvm.org/D114957

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