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