[IRPGO] instrumentation for multiple .so but one profile file generated

hi，
In -fprofile-continuous mode or -fprofile-generate=libxx_%p%c, when performing IR-PGO instrumentation for multiple .so files or ELF executable binaries, only one profile file is actually generated after execution.
Does LLVM PGO instrumentation have functionality similar to llvm-bolt's -instrumentation-sleep-time=3?

Br

Start by reproducing the behavior with -fprofile-continuous or -fprofile-generate=libxx_%p%c across multiple .so files or ELF executables, and compare the generated profile files after execution. Read the IR-PGO instrumentation path and the llvm-bolt instrumentation-sleep-time behavior; done means determining whether separate profile files should be produced and documenting or correcting the result.

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