[llvm] AlwaysInliner: Factor out some code in preparation for a future change. (PR #145614)

[Florian Hahn via llvm-commits]

================
@@ -30,6 +30,44 @@ using namespace llvm;
 
 namespace {
 
+bool canInlineCallBase(CallBase *CB) {
----------------
fhahn wrote:

```suggestion
static bool canInlineCallBase(CallBase *CB) {
```


Could you also add a brief doc-comment?

https://github.com/llvm/llvm-project/pull/145614