[llvm] [LLVM][MC] Add tracing support to llvm-mc to profile decoding (PR #151149)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,12 @@
+# REQUIRES: aarch64-registered-target
+# RUN: rm -rf %t.json
+# RUN: llvm-mc -arch aarch64 -disassemble -o /dev/null %s -num-benchmark-runs=1000 -time-trace -time-trace-file=%t.json
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MaskRay wrote:

-triple=aarch64 instead of -arch

-arch is error-prone in tests as it uses the host OS.

https://github.com/llvm/llvm-project/pull/151149