================
@@ -5394,10 +5394,12 @@ X86:
 - ``Z``: An immediate 32-bit unsigned integer.
 - ``q``: An 8, 16, 32, or 64-bit register which can be accessed as an 8-bit
   ``l`` integer register. On X86-32, this is the ``a``, ``b``, ``c``, and ``d``
-  registers, and on X86-64, it is all of the integer registers.
+  registers, and on X86-64, it is all of the integer registers. When feature
+  `egpr` and `inline-asm-use-gpr32` are both on, they will be extended to EGPR.
 - ``Q``: An 8, 16, 32, or 64-bit register which can be accessed as an 8-bit
   ``h`` integer register. This is the ``a``, ``b``, ``c``, and ``d`` registers.
-- ``r`` or ``l``: An 8, 16, 32, or 64-bit integer register.
+- ``r`` or ``l``: An 8, 16, 32, or 64-bit integer register. When feature
+  `egpr` and `inline-asm-use-gpr32` are both on, they will be extended to EGPR.
----------------
KanRobert wrote:

ditto

https://github.com/llvm/llvm-project/pull/92338
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