| /* |
| RUN: rm -fr %t.profdir |
| RUN: %clang_profgen=%t.profdir/default_%m.profraw -o %t -O2 %s |
| RUN: %run %t 2>&1 | FileCheck %s --check-prefix=NO_EXIT_WRITE |
| RUN: llvm-profdata merge -o %t.profdata %t.profdir |
| RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s --check-prefix=PROF |
| |
| NO_EXIT_WRITE: Profile data not written to file: already written |
| */ |
| |
| int __llvm_profile_dump(void); |
| void __llvm_profile_reset_counters(void); |
| int foo(int); |
| int bar(int); |
| int skip(int); |
| |
| int main(int argc, const char *argv[]) { |
| int Ret = foo(0); /* region 1 */ |
| __llvm_profile_dump(); |
| |
| /* not profiled -- cleared later. */ |
| skip(0); /* skipped region */ |
| |
| __llvm_profile_reset_counters(); |
| Ret += bar(0); /* region 2 */ |
| __llvm_profile_dump(); |
| |
| skip(1); |
| |
| __llvm_profile_reset_counters(); |
| /* foo's profile will be merged. */ |
| foo(1); /* region 3 */ |
| __llvm_profile_dump(); |
| |
| return Ret; |
| } |
| |
| __attribute__((noinline)) int foo(int X) { |
| /* PROF: define {{.*}} @foo({{.*}}!prof ![[ENT:[0-9]+]] |
| PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]] |
| */ |
| return X <= 0 ? -X : X; |
| } |
| |
| __attribute__((noinline)) int skip(int X) { |
| /* PROF: define {{.*}} @skip( |
| PROF: br i1 %{{.*}}, label %{{.*}}, label %{{[^,]+$}} |
| */ |
| return X <= 0 ? -X : X; |
| } |
| |
| __attribute__((noinline)) int bar(int X) { |
| /* PROF-LABEL: define {{.*}} @bar( |
| PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD2:[0-9]+]] |
| */ |
| return X <= 0 ? -X : X; |
| } |
| |
| /* |
| PROF: ![[ENT]] = !{!"function_entry_count", i64 2} |
| PROF: ![[PD1]] = !{!"branch_weights", i32 2, i32 2} |
| */ |
