================
@@ -758,6 +758,14 @@ class TypeInfoGen<list<LLVMType> RetTypes, list<LLVMType>
ParamTypes> {
// * ParamTypes is a list containing the parameter types expected for the
// intrinsic.
// * Properties can be set to describe the behavior of the intrinsic.
+// * TargetFeatures is a target feature expression required by the intrinsic.
+// The empty string means no target features are required. The expression
+// uses feature names from the target's subtarget feature table. Comma means
+// AND, | means OR, and parentheses group expressions. The special value
----------------
jayfoad wrote:
Should state the relative precedence of `,` and `|`.
https://github.com/llvm/llvm-project/pull/201470
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