Vendor import of clang trunk r238337:

https://llvm.org/svn/llvm-project/cfe/trunk@238337

1 files changed, 44 insertions, 0 deletions

diff --git a/test/Profile/cxx-rangefor.cpp b/test/Profile/cxx-rangefor.cpp
new file mode 100644
index 0000000..f30cdc7
--- /dev/null
+++ b/test/Profile/cxx-rangefor.cpp
@@ -0,0 +1,44 @@
+// Tests for instrumentation of C++11 range-for
+
+// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instr-generate > %tgen
+// RUN: FileCheck --input-file=%tgen -check-prefix=CHECK -check-prefix=PGOGEN %s
+
+// RUN: llvm-profdata merge %S/Inputs/cxx-rangefor.proftext -o %t.profdata
+// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instr-use=%t.profdata > %tuse
+// RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s
+
+// PGOGEN: @[[RFC:__llvm_profile_counters__Z9range_forv]] = private global [5 x i64] zeroinitializer
+
+// CHECK-LABEL: define void @_Z9range_forv()
+// PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 0
+void range_for() {
+  int arr[] = {1, 2, 3, 4, 5};
+  int sum = 0;
+  // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 1
+  // PGOUSE: br {{.*}} !prof ![[RF1:[0-9]+]]
+  for (auto i : arr) {
+    // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 2
+    // PGOUSE: br {{.*}} !prof ![[RF2:[0-9]+]]
+    if (i == 3)
+      continue;
+    sum += i;
+    // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 3
+    // PGOUSE: br {{.*}} !prof ![[RF3:[0-9]+]]
+    if (sum >= 7)
+      break;
+  }
+
+  // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 4
+  // PGOUSE: br {{.*}} !prof ![[RF4:[0-9]+]]
+  if (sum) {}
+}
+
+// PGOUSE-DAG: ![[RF1]] = !{!"branch_weights", i32 5, i32 1}
+// PGOUSE-DAG: ![[RF2]] = !{!"branch_weights", i32 2, i32 4}
+// PGOUSE-DAG: ![[RF3]] = !{!"branch_weights", i32 2, i32 3}
+// PGOUSE-DAG: ![[RF4]] = !{!"branch_weights", i32 2, i32 1}
+
+int main(int argc, const char *argv[]) {
+  range_for();
+  return 0;
+}