[llvm] added a script to update llvm-mc test file (PR #107246)

[Brox Chen via llvm-commits]

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@@ -0,0 +1,5 @@
+; NOTE: Assertions have been autogenerated by utils/update_mc_test_check.py UTC_ARGS: --version 5
+// RUN: llvm-mc -triple=amdgcn -show-encoding %s 2>&1 | FileCheck --check-prefixes=CHECK %s
+
+// CHECK: v_bfrev_b32_e32 v5, v1                  ; encoding: [0x01,0x71,0x0a,0x7e]
+v_bfrev_b32 v5, v1
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broxigarchen wrote:

done

https://github.com/llvm/llvm-project/pull/107246