[GISel][Docs] Add a little bit of documentation for G_FENCE. (llvm#73722

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ROCm · Nov 29, 2023 · 5933589 · 5933589
1 parent 81e3e7e
commit 5933589
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/llvm/docs/GlobalISel/GenericOpcode.rst b/llvm/docs/GlobalISel/GenericOpcode.rst
@@ -751,9 +751,10 @@ operands.
 G_FENCE
 ^^^^^^^
 
-.. caution::
+Generic fence. The first operand is the memory ordering. The second operand is
+the syncscope.
 
-  I couldn't find any documentation on this at the time of writing.
+See the LLVM LangRef entry on the '``fence'`` instruction for more details.
 
 G_MEMCPY
 ^^^^^^^^