[compiler-rt] [llvm] [PGO] Add option to always instrumenting loop entries (PR #116789)

[Ellis Hoag via llvm-commits]

ellishg wrote:

> @ellishg Do you know how `llvm-project/llvm//test/tools/llvm-profdata/Inputs/function-entry-coverage.profdata` was generated? The new bit broke `llvm-project/llvm/test/tools/llvm-profdata/show-covered.test` so I need to re-generate its input, but I cannot find the generation logic. It was added in [11d3074](https://github.com/llvm/llvm-project/commit/11d3074267324e811ade248a991564fa6722754e)

Thanks for asking. I think you should not need to change this test, especially since this flag is off by default. I suspect it is broken because the variant mask bits were changed.

https://github.com/llvm/llvm-project/pull/116789