[llvm] [PGO] Preserve analysis results when nothing was instrumented (PR #93421)

[Pavel Samolysov via llvm-commits]

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@@ -0,0 +1,15 @@
+; RUN: opt < %s -passes=pgo-instr-gen -S | FileCheck %s --check-prefix=GEN-COMDAT
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samolisov wrote:

@aeubanks Yes, unfortunately I have no idea how to reflect both changes in the title what is the sign there should be two commits.

https://github.com/llvm/llvm-project/pull/93421