[llvm] [PAC][AArch64] Lower ptrauth constants in code (PR #94241)

[Ahmed Bougacha via llvm-commits]

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@@ -60,6 +60,16 @@ The address of a global value.
 
   %0(p0) = G_GLOBAL_VALUE @var_local
 
+G_PTRAUTH_GLOBAL_VALUE
+^^^^^^^^^^^^^^^^^^^^^^
+
+The signed address of a global value. Operands: address to be signed (pointer),
+key (32-bit imm), address for address discrimination (zero if not needed) and
+an extra discriminator (64-bit imm).
+
+.. code-block:: none
+  %0:_(p0) = G_PTRAUTH_GLOBAL_VALUE %1:_(p0), s32, %2:_(p0), s64
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ahmedbougacha wrote:

I think this really does need the extra newline after `.. code-block:: none`

https://github.com/llvm/llvm-project/pull/94241