================
@@ -0,0 +1,44 @@
+// Test that missing-annotations detects branches that are hot, but not 
annotated
+
+// test diagnostics are issued when profiling data mis-matches annotations
+// RUN: llvm-profdata merge %S/Inputs/missing-annotations-branch.proftext -o 
%t.profdata
+// RUN: %clang_cc1 %s -O2 -o - -emit-llvm 
-fprofile-instrument-use-path=%t.profdata -verify -mllvm 
-pgo-missing-annotations -Rpass=missing-annotations
+
+// Ensure we emit an error when we don't use pgo with tolerance threshold
+// RUN: %clang_cc1 %s -O2 -o - -emit-llvm  
-fdiagnostics-misexpect-tolerance=10 -mllvm -pgo-missing-annotations 
-debug-info-kind=line-tables-only 2>&1 | FileCheck -check-prefix=NOPGO %s
+
+// Test -fdiagnostics-misexpect-tolerance=  requires pgo profile
+// NOPGO: '-fdiagnostics-misexpect-tolerance=' requires profile-guided 
optimization information
----------------
ellishg wrote:

If there is only one FileCheck, I would prefer to use the default `CHECK` 
prefix.

https://github.com/llvm/llvm-project/pull/96524
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