[PATCH] D98174: [MCA] Add tests for IPC on Cortex-A55

[Andrew Savonichev via Phabricator via llvm-commits]

asavonic created this revision.
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The tests compare IPC statistics that MCA provides with IPC values
measured on Cortex-A55 hardware. For hardware tests, each snippet is
run in a loop unrolled by 1000, and IPC is measured by linux-perf.

Several tests do not match the hardware: the skewed ALU is not
supported, LDR seem to be missing a forwarding path, and integer
DIV takes a variable number of cycles.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D98174

Files:
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-0.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-1.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-2.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-3.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-4.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-5.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-6.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-7.s
  llvm/test/tools/llvm-mca/AArch64/Cortex/IPC/A55-8.s

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