forked from OSchip/llvm-project
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
// RUN: %clang_profgen -DCHECK_SYMBOLS -O3 -o %t.symbols %s
|
|
// RUN: llvm-nm %t.symbols | FileCheck %s --check-prefix=CHECK-SYMBOLS
|
|
// RUN: %clang_profgen -O3 -o %t %s
|
|
// RUN: %run %t %t.profraw
|
|
// RUN: llvm-profdata merge -o %t.profdata %t.profraw
|
|
// RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s
|
|
|
|
// This usage of llvm-nm assumes executables have symbol tables. They do not in
|
|
// an MSVC environment, so we can't make this test portable.
|
|
// UNSUPPORTED: msvc
|
|
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifndef CHECK_SYMBOLS
|
|
#include <stdio.h>
|
|
#endif
|
|
|
|
int __llvm_profile_runtime = 0;
|
|
uint64_t __llvm_profile_get_size_for_buffer(void);
|
|
int __llvm_profile_write_buffer(char *);
|
|
void __llvm_profile_merge_from_buffer(const char *, uint64_t Size);
|
|
|
|
int write_buffer(uint64_t, const char *);
|
|
int main(int argc, const char *argv[]) {
|
|
// CHECK-LABEL: define {{.*}} @main(
|
|
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
|
|
if (argc < 2)
|
|
return 1;
|
|
|
|
const uint64_t MaxSize = 10000;
|
|
static char Buffer[MaxSize];
|
|
|
|
uint64_t Size = __llvm_profile_get_size_for_buffer();
|
|
if (Size > MaxSize)
|
|
return 1;
|
|
int Write = __llvm_profile_write_buffer(Buffer);
|
|
if (Write)
|
|
return Write;
|
|
|
|
#ifdef CHECK_SYMBOLS
|
|
// Don't write it out. Since we're checking the symbols, we don't have libc
|
|
// available.
|
|
// Call merge function to make sure it does not bring in libc deps:
|
|
__llvm_profile_merge_from_buffer(Buffer, Size);
|
|
return 0;
|
|
#else
|
|
// Actually write it out so we can FileCheck the output.
|
|
FILE *File = fopen(argv[1], "w");
|
|
if (!File)
|
|
return 1;
|
|
if (fwrite(Buffer, 1, Size, File) != Size)
|
|
return 1;
|
|
return fclose(File);
|
|
#endif
|
|
}
|
|
// CHECK: ![[PD1]] = !{!"branch_weights", i32 1, i32 2}
|
|
|
|
// CHECK-SYMBOLS-NOT: {{ }}___cxx_global_var_init
|
|
// CHECK-SYMBOLS-NOT: {{ }}___llvm_profile_register_write_file_atexit
|
|
// CHECK-SYMBOLS-NOT: {{ }}___llvm_profile_set_filename
|
|
// CHECK-SYMBOLS-NOT: {{ }}___llvm_profile_write_file
|
|
// CHECK-SYMBOLS-NOT: {{ }}_fdopen
|
|
// CHECK-SYMBOLS-NOT: {{ }}_fopen
|
|
// CHECK-SYMBOLS-NOT: {{ }}_fwrite
|
|
// CHECK-SYMBOLS-NOT: {{ }}_getenv
|
|
// CHECK-SYMBOLS-NOT: {{ }}getenv
|
|
// CHECK-SYMBOLS-NOT: {{ }}_malloc
|
|
// CHECK-SYMBOLS-NOT: {{ }}malloc
|
|
// CHECK-SYMBOLS-NOT: {{ }}_calloc
|
|
// CHECK-SYMBOLS-NOT: {{ }}calloc
|
|
// CHECK-SYMBOLS-NOT: {{ }}_free
|
|
// CHECK-SYMBOLS-NOT: {{ }}free
|
|
// CHECK-SYMBOLS-NOT: {{ }}_open
|
|
// CHECK-SYMBOLS-NOT: {{ }}_getpagesize
|