1 // RUN: %clang_profgen -DCHECK_SYMBOLS -O3 -o %t.symbols %s 2 // RUN: llvm-nm %t.symbols | FileCheck %s --check-prefix=CHECK-SYMBOLS 3 // RUN: %clang_profgen -O3 -o %t %s 4 // RUN: %run %t %t.profraw 5 // RUN: llvm-profdata merge -o %t.profdata %t.profraw 6 // RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s 7 8 #include <stdint.h> 9 #include <stdlib.h> 10 11 #ifndef CHECK_SYMBOLS 12 #include <stdio.h> 13 #endif 14 15 int __llvm_profile_runtime = 0; 16 uint64_t __llvm_profile_get_size_for_buffer(void); 17 int __llvm_profile_write_buffer(char *); 18 int write_buffer(uint64_t, const char *); 19 int main(int argc, const char *argv[]) { 20 // CHECK-LABEL: define {{.*}} @main( 21 // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]] 22 if (argc < 2) 23 return 1; 24 25 const uint64_t MaxSize = 10000; 26 static char Buffer[MaxSize]; 27 28 uint64_t Size = __llvm_profile_get_size_for_buffer(); 29 if (Size > MaxSize) 30 return 1; 31 int Write = __llvm_profile_write_buffer(Buffer); 32 if (__llvm_profile_write_buffer(Buffer)) 33 return Write; 34 35 #ifdef CHECK_SYMBOLS 36 // Don't write it out. Since we're checking the symbols, we don't have libc 37 // available. 38 return 0; 39 #else 40 // Actually write it out so we can FileCheck the output. 41 FILE *File = fopen(argv[1], "w"); 42 if (!File) 43 return 1; 44 if (fwrite(Buffer, 1, Size, File) != Size) 45 return 1; 46 return fclose(File); 47 #endif 48 } 49 // CHECK: ![[PD1]] = !{!"branch_weights", i32 1, i32 2} 50 51 // CHECK-SYMBOLS-NOT: ___cxx_global_var_init 52 // CHECK-SYMBOLS-NOT: ___llvm_profile_register_write_file_atexit 53 // CHECK-SYMBOLS-NOT: ___llvm_profile_set_filename 54 // CHECK-SYMBOLS-NOT: ___llvm_profile_write_file 55 // CHECK-SYMBOLS-NOT: _fdopen 56 // CHECK-SYMBOLS-NOT: _fopen 57 // CHECK-SYMBOLS-NOT: _fwrite 58 // CHECK-SYMBOLS-NOT: _getenv 59 // CHECK-SYMBOLS-NOT: getenv 60 // CHECK-SYMBOLS-NOT: _malloc 61 // CHECK-SYMBOLS-NOT: malloc 62 // CHECK-SYMBOLS-NOT: _calloc 63 // CHECK-SYMBOLS-NOT: calloc 64 // CHECK-SYMBOLS-NOT: _free 65 // CHECK-SYMBOLS-NOT: free 66 // CHECK-SYMBOLS-NOT: _open 67
