[PATCH] D82377: [ARM] Allow tail predication on sadd_sat and uadd_sat intrinsics

[Sjoerd Meijer via Phabricator via llvm-commits]

SjoerdMeijer added inline comments.


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Comment at: llvm/lib/Target/ARM/MVETailPredication.cpp:356
       } else if (auto *Int = dyn_cast<IntrinsicInst>(&I)) {
-        if (Int->getIntrinsicID() == Intrinsic::fma)
+        if (Int->getIntrinsicID() == Intrinsic::fma || Int->getIntrinsicID() == Intrinsic::sadd_sat || Int->getIntrinsicID() == Intrinsic::uadd_sat)
           continue;
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Do we expect more intrinsics to be allowed after these 2?  For example, if we allow sadd, can we allow ssub too? And then while we are add it, add the ssubs too? 
If we expect more intrinsics here, probably better to create an "AllowList" for intrinsics somewhere, and do a look-up here?



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https://reviews.llvm.org/D82377