[clang] [llvm] [Clang] Add `__builtin_stack_address` (PR #148281)

[Nikita Popov via llvm-commits]

================
@@ -14389,6 +14389,34 @@ Semantics:
 
 Note this intrinsic is only verified on AArch64 and ARM.
 
+'``llvm.stackaddress``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      declare ptr @llvm.stackaddress()
----------------
nikic wrote:

```suggestion
      declare ptr @llvm.stackaddress.p0()
```
(The intrinsic is overloaded)

https://github.com/llvm/llvm-project/pull/148281