test: Give instrumentation based profiling tests their own directory

These tests are logically related, but they're spread about several
different CodeGen directories. Consolidate them in one place to make
them easier to manage.

llvm-svn: 203541

1 files changed, 72 insertions, 0 deletions

diff --git a/clang/test/Profile/cxx-throws.cpp b/clang/test/Profile/cxx-throws.cpp
new file mode 100644
index 00000000000..0a8ebf1558b
--- /dev/null
+++ b/clang/test/Profile/cxx-throws.cpp
@@ -0,0 +1,72 @@
+// Test instrumentation of C++ exception handling constructs.
+
+// FIXME: Don't seek bb labels, like "if.else"
+// REQUIRES: asserts
+
+// RUN: %clangxx %s -o - -emit-llvm -S -fprofile-instr-generate -target %itanium_abi_triple | FileCheck -check-prefix=PGOGEN %s
+// RUN: %clangxx %s -o - -emit-llvm -S -fprofile-instr-generate -target %itanium_abi_triple | FileCheck -check-prefix=PGOGEN-EXC %s
+
+// RUN: %clang %s -o - -emit-llvm -S -fprofile-instr-use=%S/Inputs/cxx-throws.profdata -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE %s
+// RUN: %clang %s -o - -emit-llvm -S -fprofile-instr-use=%S/Inputs/cxx-throws.profdata -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE-EXC %s
+
+// PGOGEN: @[[THC:__llvm_pgo_ctr[0-9]*]] = private global [9 x i64] zeroinitializer
+// PGOGEN-EXC: @[[THC:__llvm_pgo_ctr[0-9]*]] = private global [9 x i64] zeroinitializer
+
+// PGOGEN-LABEL: @_Z6throwsv()
+// PGOUSE-LABEL: @_Z6throwsv()
+// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 0
+void throws() {
+  // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 1
+  // PGOUSE: br {{.*}} !prof ![[TH1:[0-9]+]]
+  for (int i = 0; i < 100; ++i) {
+    try {
+      // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 3
+      // PGOUSE: br {{.*}} !prof ![[TH2:[0-9]+]]
+      if (i % 3) {
+        // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 4
+        // PGOUSE: br {{.*}} !prof ![[TH3:[0-9]+]]
+        if (i < 50)
+          throw 1;
+      } else {
+        // The catch block may be emitted after the throw above, we can skip it
+        // by looking for an else block, but this will break if anyone puts an
+        // else in the catch
+        // PGOUSE: if.else{{.*}}:
+        // PGOGEN: if.else{{.*}}:
+
+        // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 5
+        // PGOUSE: br {{.*}} !prof ![[TH4:[0-9]+]]
+        if (i >= 50)
+          throw 0;
+      }
+    } catch (int e) {
+      // PGOUSE-EXC: catch{{.*}}:
+      // PGOGEN-EXC: catch{{.*}}:
+
+      // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 6
+      // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 7
+      // PGOUSE-EXC: br {{.*}} !prof ![[TH5:[0-9]+]]
+      if (e) {}
+    }
+    // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 2
+
+    // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 8
+    // PGOUSE: br {{.*}} !prof ![[TH6:[0-9]+]]
+    if (i < 100) {}
+  }
+
+  // PGOUSE-NOT: br {{.*}} !prof ![0-9]+
+  // PGOUSE: ret void
+}
+
+// PGOUSE-DAG: ![[TH1]] = metadata !{metadata !"branch_weights", i32 101, i32 2}
+// PGOUSE-DAG: ![[TH2]] = metadata !{metadata !"branch_weights", i32 67, i32 35}
+// PGOUSE-DAG: ![[TH3]] = metadata !{metadata !"branch_weights", i32 34, i32 34}
+// PGOUSE-DAG: ![[TH4]] = metadata !{metadata !"branch_weights", i32 18, i32 18}
+// PGOUSE-EXC: ![[TH5]] = metadata !{metadata !"branch_weights", i32 34, i32 18}
+// PGOUSE-DAG: ![[TH6]] = metadata !{metadata !"branch_weights", i32 101, i32 1}
+
+int main(int argc, const char *argv[]) {
+  throws();
+  return 0;
+}