clang/test/Profile/c-unreachable-after-switch.c

   1 // RUN: %clang_cc1 -no-opaque-pointers -O3 -triple x86_64-apple-macosx10.10 -main-file-name c-unreachable-after-switch.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck %s
   2
   3 // CHECK: @[[C:__profc_foo]] = private global [3 x i64] zeroinitializer
   4
   5 // CHECK-LABEL: @foo()
   6 // CHECK: store {{.*}} @[[C]], i64 0, i64 0
   7 void foo(void) {
   8   // CHECK: store {{.*}} @[[C]], i64 0, i64 2
   9   switch (0) {
  10   default:
  11     return;
  12   }
  13   // We shouldn't emit the unreachable counter. This used to crash in GlobalDCE.
  14   // CHECK-NOT: store {{.*}} @[[C]], i64 0, i64 1}
  15 }