================
@@ -6411,6 +6411,40 @@ static Value *simplifyBinaryIntrinsic(Function *F, Value
*Op0, Value *Op1,
return Constant::getNullValue(ReturnType);
break;
}
+ case Intrinsic::ptrmask: {
+ if (isa<PoisonValue>(Op0) || isa<PoisonValue>(Op1))
+ return PoisonValue::get(Op0->getType());
+
+ // NOTE: We can't apply this simplifications based on the value of Op1
+ // because we need to preserve provenance.
+ if (Q.isUndefValue(Op0) || match(Op0, m_Zero()))
+ return Constant::getNullValue(Op0->getType());
+
+ if (Op1->getType()->getScalarSizeInBits() ==
----------------
goldsteinn wrote:
I think it needs to be pointer size (as opposed to index size) as we are
checking for useless masks. I.e if pointer size > index size all 1s mask isn't
redundant.
https://github.com/llvm/llvm-project/pull/67166
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