12d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clang_profgen -o %t -O3 %s
22d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
32d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: llvm-profdata merge -o %t.profdata %t.profraw
42d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s
52d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines
62d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesvoid __llvm_profile_reset_counters(void);
72d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesvoid foo(int);
82d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesint main(void) {
92d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  foo(0);
102d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  __llvm_profile_reset_counters();
112d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  foo(1);
122d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  return 0;
132d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines}
142d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesvoid foo(int N) {
152d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  // CHECK-LABEL: define void @foo(
162d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[FOO:[0-9]+]]
172d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines  if (N) {}
182d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines}
192d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: ![[FOO]] = metadata !{metadata !"branch_weights", i32 2, i32 1}
20