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diff --git a/simple_v_extension/specification/mv.x.rst b/simple_v_extension/specification/mv.x.rst
index 6b3232ea4e2fd26272dbd57e4b2afed5034785c8..ce75de22031aa4a500a29fe71959fab262a43358 100644 (file)
--- a/simple_v_extension/specification/mv.x.rst
+++ b/simple_v_extension/specification/mv.x.rst
@@ -106,6 +106,13 @@ potential MV.X?  register-version of MV-swizzle?
 
 question: do we need a swizzle MV.X as well?
 
+MV.X with 3 operands
+====================
+
+regs[rd] = regs[rs1 + regs[rs2]]
+
+Similar to LD/ST with the same twin predication rules
+
 macro-op fusion
 ===============