[llvm] [PGO] Supporting code for always instrumenting loop entries (PR #116789)

[Christian Ulmann via llvm-commits]

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@@ -0,0 +1,70 @@
+; RUN: opt < %s -passes=pgo-instr-gen -pgo-instrument-loop-entries=false -S | FileCheck %s --check-prefixes=GEN,NOTLOOPENTRIES
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Dinistro wrote:

```suggestion
; RUN: opt %s -passes=pgo-instr-gen -pgo-instrument-loop-entries=false -S | FileCheck %s --check-prefixes=GEN,NOTLOOPENTRIES
```
Nit: The `<` is no longer necessary.

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