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llvm-capstone/llvm/tools/llvm-exegesis
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Aiden Grossman 1048b7f8e7 [llvm-exegesis] Make sure auxiliary memory is unlinked after usage 
Currently the shm_unlink is never called on the auxiliary memory shared
memory, so it stays around after running llvm-exegesis (including
running the llvm-exegesis tests). This patch adds the auxiliary memory
shared memory name to the SharedMemoryNames list so that it gets
unlinked when the destructor of SubprocessMemory is called.
2023-06-30 12:43:20 -07:00
..
lib
[llvm-exegesis] Make sure auxiliary memory is unlinked after usage
2023-06-30 12:43:20 -07:00
CMakeLists.txt
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llvm-exegesis.cpp
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README.md
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README.md

llvm-exegesis

llvm-exegesis is a benchmarking tool that accepts or assembles a snippet and can measure characteristics of that snippet by executing it while keeping track of performance counters.

Currently Supported Platforms

llvm-exegesis is quite platform-dependent and currently only supports a couple platform configurations for benchmarking. The limitations are listed below. Analysis mode in llvm-exegesis is supported on all platforms on which LLVM is.

Currently Supported Operating Systems for Benchmarking

Currently, llvm-exegesis only supports benchmarking on Linux. This is mainly due to a dependency on the Linux perf subsystem for reading performance counters.

Currently Supported Architectures for Benchmarking

Currently, using llvm-exegesis for benchmarking is supported on the following architectures:

  • x86
    • 64-bit only due to this being the only implemented calling convention in llvm-exegesis currently.
  • ARM
    • AArch64 only
  • MIPS
  • PowerPC (PowerPC64LE only)

Note that not benchmarking functionality is guaranteed to work on all platforms.