[AMDGPU][MC][NFC][DOC] Updated AMD GPU assembler syntax description.
Summary of changes:
- added description of GFX90A;
- minor bugfixing and improvements.
diff --git a/llvm/docs/AMDGPU/gfx90a_vcc.rst b/llvm/docs/AMDGPU/gfx90a_vcc.rst
new file mode 100644
index 0000000..243764e
--- /dev/null
+++ b/llvm/docs/AMDGPU/gfx90a_vcc.rst
@@ -0,0 +1,17 @@
+..
+ **************************************************
+ * *
+ * Automatically generated file, do not edit! *
+ * *
+ **************************************************
+
+.. _amdgpu_synid_gfx90a_vcc:
+
+vcc
+===
+
+Vector condition code.
+
+*Size:* 2 dwords.
+
+*Operands:* :ref:`vcc<amdgpu_synid_vcc>`
