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/*
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}
*/
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