[PATCH] D12341: add llvm.unpredictable intrinsic and lower it to metadata

Krzysztof Parzyszek via llvm-commits llvm-commits at lists.llvm.org
Fri Aug 28 09:36:08 PDT 2015


kparzysz added a comment.

In http://reviews.llvm.org/D12341#235179, @kbsmith1 wrote:

> [...]


I don't think we completely understand each other.  The profiling data that is attached to MD_prof describes the behavior of the program.  You want to have something that describes the behavior of the hardware.  Those are two different things.  The former is independent from the specific properties of the hardware and can be reused when compiling for different subtargets.  The latter is not.  I'm not opposed to profiling information tied to specific hardware in principle, but I think those two kinds should be easily separable.


http://reviews.llvm.org/D12341





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