clang/test/CodeGenCXX/profile-remap.cpp

   1 // REQUIRES: x86-registered-target
   2 //
   3 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fprofile-sample-use=%S/Inputs/profile-remap.samples -fprofile-remapping-file=%S/Inputs/profile-remap.map -O2 %s -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SAMPLES
   4 // RUN: llvm-profdata merge -output %T.profdata %S/Inputs/profile-remap.proftext
   5 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fprofile-instrument-use-path=%T.profdata -fprofile-remapping-file=%S/Inputs/profile-remap.map -O2 %s -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,CHECK-INSTR
   6 // RUN: llvm-profdata merge -output %T.profdata %S/Inputs/profile-remap_entry.proftext
   7 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fprofile-instrument-use-path=%T.profdata -fprofile-remapping-file=%S/Inputs/profile-remap.map -O2 %s -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,CHECK-INSTR
   8
   9 namespace Foo {
  10   struct X {};
  11   bool cond();
  12   void bar();
  13   void baz();
  14   void function(X x) {
  15     if (cond())
  16       bar();
  17     else
  18       baz();
  19   }
  20 }
  21
  22 // CHECK: define {{.*}} @_ZN3Foo8functionENS_1XE() {{.*}} !prof [[FUNC_ENTRY:![0-9]*]]
  23 // CHECK: br i1 {{.*}} !prof [[BR_WEIGHTS:![0-9]*]]
  24 //
  25 // FIXME: Laplace's rule of succession is applied to sample profiles...
  26 // CHECK-SAMPLES-DAG: [[FUNC_ENTRY]] = !{!"function_entry_count", i64 1}
  27 // CHECK-SAMPLES-DAG: [[BR_WEIGHTS]] = !{!"branch_weights", i32 11, i32 91}
  28 //
  29 // ... but not to instruction profiles.
  30 // CHECK-INSTR-DAG: [[FUNC_ENTRY]] = !{!"function_entry_count", i64 100}
  31 // CHECK-INSTR-DAG: [[BR_WEIGHTS]] = !{!"branch_weights", i32 10, i32 90}