[llvm] [ctx_prof] Fix the pre-thinlink "use" case (PR #102511)

[Mircea Trofin via llvm-commits]

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@@ -7,19 +7,22 @@
 
 declare void @bar()
 
+;.
+; CHECK: @__profn_foo = private constant [3 x i8] c"foo"
+;.
 define void @foo(i32 %a, ptr %fct) {
 ; CHECK-LABEL: define void @foo(
 ; CHECK-SAME: i32 [[A:%.*]], ptr [[FCT:%.*]]) local_unnamed_addr {
+; CHECK-NEXT:    call void @llvm.instrprof.increment(ptr @__profn_foo, i64 728453322856651412, i32 2, i32 0)
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mtrofin wrote:

it's the changes in PGOInstrumentation that do that.

https://github.com/llvm/llvm-project/pull/102511