Merge pull request #7507 from vedantk/coverage-fixups

[Coverage] Tighten up test case (NFC)

Author: vedantk

test/IRGen/coverage.swift

@@ -2,6 +2,7 @@
 // RUN: %target-swift-frontend -Xllvm -new-mangling-for-tests -assume-parsing-unqualified-ownership-sil %s -profile-generate -profile-coverage-mapping -emit-ir -o - | %FileCheck %s --check-prefix=IR
 
 // IR-NOT: __llvm_coverage_names
+// IR-NOT: __profn
 
 // SIL-DAG: sil hidden @_T08coverage2f1yyF
 // SIL-DAG: string_literal utf8 "{{.*}}coverage.swift:{{.*}}_T08coverage2f1yyF"