68745a557e
Similar to D97585. D25456 used `S_ATTR_LIVE_SUPPORT` to ensure the data variable will be retained or discarded as a unit with the counter variable, so llvm.compiler.used is sufficient. It allows ld to dead strip unneeded profc and profd variables. Reviewed By: vsk Differential Revision: https://reviews.llvm.org/D105445
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/// Test instrumentation can handle various linkages.
|
|
// RUN: %clang_profgen -fcoverage-mapping %s -o %t
|
|
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
|
|
// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s
|
|
|
|
// RUN: %clang_profgen -fcoverage-mapping -Wl,-dead_strip %s -o %t
|
|
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
|
|
// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s
|
|
|
|
// CHECK: {{.*}}external{{.*}}:
|
|
// CHECK-NEXT: Hash:
|
|
// CHECK-NEXT: Counters: 1
|
|
// CHECK-NEXT: Function count: 1
|
|
// CHECK: {{.*}}weak{{.*}}:
|
|
// CHECK-NEXT: Hash:
|
|
// CHECK-NEXT: Counters: 1
|
|
// CHECK-NEXT: Function count: 1
|
|
// CHECK: main:
|
|
// CHECK-NEXT: Hash:
|
|
// CHECK-NEXT: Counters: 1
|
|
// CHECK-NEXT: Function count: 1
|
|
// CHECK: {{.*}}internal{{.*}}:
|
|
// CHECK-NEXT: Hash:
|
|
// CHECK-NEXT: Counters: 1
|
|
// CHECK-NEXT: Function count: 1
|
|
// CHECK: {{.*}}linkonce_odr{{.*}}:
|
|
// CHECK-NEXT: Hash:
|
|
// CHECK-NEXT: Counters: 1
|
|
// CHECK-NEXT: Function count: 1
|
|
|
|
#include <stdio.h>
|
|
|
|
void discarded0() {}
|
|
__attribute__((weak)) void discarded1() {}
|
|
|
|
void external() { puts("external"); }
|
|
__attribute__((weak)) void weak() { puts("weak"); }
|
|
static void internal() { puts("internal"); }
|
|
__attribute__((noinline)) inline void linkonce_odr() { puts("linkonce_odr"); }
|
|
|
|
int main() {
|
|
internal();
|
|
external();
|
|
weak();
|
|
linkonce_odr();
|
|
}
|