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; Test that prof-inject does not modify existing metadata (incl. "unknown")
; RUN: opt -passes=prof-inject %s -S -o - | FileCheck %s
define void @foo(i32 %i) {
%c = icmp eq i32 %i, 0
br i1 %c, label %yes, label %no, !prof !0
yes:
br i1 %c, label %yes2, label %no, !prof !1
yes2:
ret void
no:
ret void
}
!0 = !{!"branch_weights", i32 1, i32 2}
!1 = !{!"unknown", !"test"}
; CHECK: define void @foo(i32 %i) !prof !0
; CHECK: br i1 %c, label %yes, label %no, !prof !1
; CHECK: !0 = !{!"function_entry_count", i64 1000}
; CHECK: !1 = !{!"branch_weights", i32 1, i32 2}
; CHECK: !2 = !{!"unknown", !"test"}
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