diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoZk.td b/llvm/lib/Target/RISCV/RISCVInstrInfoZk.td
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoZk.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoZk.td
@@ -1,4 +1,4 @@
-//===-- RISCVInstrInfoZk.td - RISC-V 'K' instructions -------*- tablegen -*-===//
+//===-- RISCVInstrInfoZk.td - RISC-V 'Zk' instructions -------*- tablegen -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 //
 // This file describes the RISC-V instructions from the standard 'K',
-// Cryptography Instructions extension, version 1.0-rc4.
+// Cryptography Instructions extension, version 1.0.0
 //
 //===----------------------------------------------------------------------===//
 
@@ -17,9 +17,6 @@
 
 let DecoderNamespace = "RVK" in {
 let Predicates = [HasStdExtZbkx] in {
-
-// Instructions with same function (xperm.*) are defined in RISCVInstrInfoZb.td,
-// however ZbP extension is removed in revision 1.0.0 of the bitmanip extension.
 def XPERM8 : ALU_rr<0b0010100, 0b100, "xperm8">, Sched<[]>;
 def XPERM4 : ALU_rr<0b0010100, 0b010, "xperm4">, Sched<[]>;
 } // Predicates = [HasStdExtZbkx]