[llvm] [llvm-c] Add support for setting/getting new disjoint flag on or instructions (PR #74517)

[Nikita Popov via llvm-commits]

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@@ -3985,6 +3985,17 @@ LLVMBool LLVMGetNNeg(LLVMValueRef NonNegInst);
  */
 void LLVMSetNNeg(LLVMValueRef NonNegInst, LLVMBool IsNonNeg);
 
+/**
+ * Gets if the instruction has the disjoint flag set
+ * Only valid for or instructions
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nikic wrote:

```suggestion
 * Gets whether the instruction has the disjoint flag set.
 * Only valid for or instructions.
```

https://github.com/llvm/llvm-project/pull/74517