[Profile] Add a new test case

The end-end test checks that cs-profile counter update
is obtained as expected.

llvm-svn: 277276

diff --git a/compiler-rt/test/profile/Linux/instrprof-cs.c b/compiler-rt/test/profile/Linux/instrprof-cs.c
new file mode 100644 (file)
index 0000000..3be4359
--- /dev/null
+++ b/compiler-rt/test/profile/Linux/instrprof-cs.c
@@ -0,0 +1,35 @@
+// RUN: rm -fr %t.prof
+// RUN: %clang_pgogen=%t.prof/ -o %t.gen.cs -O2 %s
+// RUN: %t.gen.cs
+// RUN: llvm-profdata merge -o %t.cs.profdata %t.prof/
+// Check context sensitive profile
+// RUN: %clang_profuse=%t.cs.profdata  -O2 -emit-llvm -S %s -o - | FileCheck %s --check-prefix=CS
+//
+// RUN: %clang_profgen=%t.profraw -o %t.gen.cis -O2 %s
+// RUN: %t.gen.cis
+// RUN: llvm-profdata merge -o %t.cis.profdata %t.profraw
+// Check context insenstive profile
+// RUN: %clang_profuse=%t.cis.profdata  -O2 -emit-llvm -S %s -o - | FileCheck %s --check-prefix=CIS
+int g1 = 1;
+int g2 = 2;
+static void toggle(int t) {
+  if (t & 1)
+    g1 *= t;
+  else
+    g2 *= t;
+}
+
+int main() {
+  int i;
+  // CS: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
+  // CIS: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD:[0-9]+]]
+  toggle(g1);
+  // CS: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD2:[0-9]+]]
+  // CIS: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD:[0-9]+]]
+  toggle(g2);
+  return 0;
+}
+
+// CS: ![[PD1]] = !{!"branch_weights", i32 0, i32 1}
+// CS: ![[PD2]] = !{!"branch_weights", i32 1, i32 0}
+// CIS: ![[PD]] = !{!"branch_weights", i32 2, i32 2}