From e2acaee8bb364197af2ab197f0f641e8f988ae04 Mon Sep 17 00:00:00 2001
From: Michael Woerister <michaelwoerister@posteo>
Date: Tue, 16 Apr 2019 13:54:01 +0200
Subject: [PATCH] Add codegen test that makes sure PGO instrumentation is
 emitted as expected.

---
 src/test/codegen/pgo-instrumentation.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/test/codegen/pgo-instrumentation.rs

diff --git a/src/test/codegen/pgo-instrumentation.rs b/src/test/codegen/pgo-instrumentation.rs
new file mode 100644
index 000000000000..8493ef565d88
--- /dev/null
+++ b/src/test/codegen/pgo-instrumentation.rs
@@ -0,0 +1,20 @@
+// Test that `-Zpgo-gen` creates expected instrumentation artifacts in LLVM IR.
+
+// needs-profiler-support
+// compile-flags: -Z pgo-gen -Ccodegen-units=1
+
+// CHECK: @__llvm_profile_raw_version =
+// CHECK: @__profc_{{.*}}pgo_instrumentation{{.*}}some_function{{.*}} = private global
+// CHECK: @__profd_{{.*}}pgo_instrumentation{{.*}}some_function{{.*}} = private global
+// CHECK: @__profc_{{.*}}pgo_instrumentation{{.*}}main{{.*}} = private global
+// CHECK: @__profd_{{.*}}pgo_instrumentation{{.*}}main{{.*}} = private global
+// CHECK: @__llvm_profile_filename = {{.*}}"default_%m.profraw\00"{{.*}}
+
+#[inline(never)]
+fn some_function() {
+
+}
+
+fn main() {
+    some_function();
+}