[llvm] [C API] Add blockaddress getters to C API (PR #77390)

[Nikita Popov via llvm-commits]

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@@ -2328,6 +2328,16 @@ LLVMValueRef LLVMConstShuffleVector(LLVMValueRef VectorAConstant,
                                     LLVMValueRef MaskConstant);
 LLVMValueRef LLVMBlockAddress(LLVMValueRef F, LLVMBasicBlockRef BB);
 
+/**
+ * Gets the function associated with a given BlockAddress constant value
+ */
+LLVMValueRef LLVMGetBlockAddressFunction(LLVMValueRef BlockAddr);
+
+/**
+ * Gets the basic block associated with a given BlockAddress constant value
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nikic wrote:

```suggestion
 * Gets the basic block associated with a given BlockAddress constant value.
```

https://github.com/llvm/llvm-project/pull/77390