clang/test/CodeGen/xray-typedevent.cpp

   1 // RUN: %clang_cc1 -fxray-instrument -x c++ -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   2
   3 // CHECK-LABEL: @_Z16alwaysInstrumentv
   4 [[clang::xray_always_instrument]] void alwaysInstrument() {
   5   // Event types would normally come from calling __xray_register_event_type
   6   // from compiler-rt
   7   auto EventType = 1;
   8   static constexpr char kPhase[] = "instrument";
   9   __xray_typedevent(EventType, kPhase, 10);
  10   // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, ptr{{.*}}, i32 10)
  11 }
  12
  13 // CHECK-LABEL: @_Z15neverInstrumentv
  14 [[clang::xray_never_instrument]] void neverInstrument() {
  15   auto EventType = 2;
  16   static constexpr char kPhase[] = "never";
  17   __xray_typedevent(EventType, kPhase, 5);
  18   // CHECK-NOT: call void @llvm.xray.typedevent(i16 {{.*}}, ptr{{.*}}, i32 5)
  19 }
  20
  21 // CHECK-LABEL: @_Z21conditionalInstrumenti
  22 [[clang::xray_always_instrument]] void conditionalInstrument(int v) {
  23   auto TrueEventType = 3;
  24   auto UntrueEventType = 4;
  25   static constexpr char kTrue[] = "true";
  26   static constexpr char kUntrue[] = "untrue";
  27   if (v % 2)
  28     __xray_typedevent(TrueEventType, kTrue, 4);
  29   else
  30     __xray_typedevent(UntrueEventType, kUntrue, 6);
  31
  32   // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, ptr{{.*}}, i32 4)
  33   // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, ptr{{.*}}, i32 6)
  34 }