[libc-commits] [PATCH] D158320: [libc] Initial support for microbenchmarking GPU code

[Jon Chesterfield via Phabricator via libc-commits]

JonChesterfield added a comment.

You want memory fences to keep the operations inside the profiled region, the asm won't do that unless it has a memory clobber. Inline asm is likely to mess up codegen too.



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Comment at: libc/utils/gpu/timing/amdgpu/timing.h:36
+
+// Stimulate a simple function and obtain its latency in clock cycles on the
+// system. This function cannot be inlined or else it will disturb the very
----------------
Simulate? Delicate?


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https://reviews.llvm.org/D158320