c579c658cd
This test specifically checks that profiles are not mergeable if there's a change in the CounterPtr in the profile header. The test manually changes CounterPtr by explicitly calling memset on some offset into the profile file. This test would fail if binary IDs were emitted because the offset calculation does not take into account the binary ID sizes. This patch updates the test to use types provided in profile/InstrProfData.inc to make it more resistant to profile layout changes. Differential Revision: https://reviews.llvm.org/D110277
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// RUN: rm -f %t.profraw
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// RUN: touch %t.profraw
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// RUN: %clang_profgen -o %t %s
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// RUN: %t %t.profraw
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// RUN: %t %t.profraw modifyfile
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// RUN: cp %t.profraw %t.profraw.old
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// RUN: %t %t.profraw 2>&1 | FileCheck %s
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// RUN: diff %t.profraw %t.profraw.old
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// CHECK: Invalid profile data to merge
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#include <errno.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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enum ValueKind {
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#define VALUE_PROF_KIND(Enumerator, Value, Descr) Enumerator = Value,
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#include "profile/InstrProfData.inc"
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};
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typedef struct __llvm_profile_header {
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#define INSTR_PROF_RAW_HEADER(Type, Name, Initializer) Type Name;
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#include "profile/InstrProfData.inc"
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} __llvm_profile_header;
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typedef void *IntPtrT;
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typedef struct __llvm_profile_data {
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#define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer) Type Name;
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#include "profile/InstrProfData.inc"
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} __llvm_profile_data;
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void __llvm_profile_set_file_object(FILE* File, int EnableMerge);
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void bail(const char* str) {
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fprintf(stderr, "%s %s\n", str, strerror(errno));
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exit(1);
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}
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int main(int argc, char** argv) {
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if (argc == 3) {
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int fd = open(argv[1], O_RDWR);
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if (fd == -1)
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bail("open");
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struct stat st;
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if (stat(argv[1], &st))
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bail("stat");
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uint64_t FileSize = st.st_size;
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char* Buf = (char *) mmap(NULL, FileSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (Buf == MAP_FAILED)
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bail("mmap");
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__llvm_profile_header *Header = (__llvm_profile_header *)Buf;
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__llvm_profile_data *SrcDataStart =
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(__llvm_profile_data *)(Buf + sizeof(__llvm_profile_header) +
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Header->BinaryIdsSize);
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memset(&SrcDataStart->CounterPtr, 0xAB, sizeof(SrcDataStart->CounterPtr));
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if (munmap(Buf, FileSize))
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bail("munmap");
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if (close(fd))
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bail("close");
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} else {
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FILE* f = fopen(argv[1], "r+b");
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if (!f)
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bail("fopen");
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__llvm_profile_set_file_object(f, 1);
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}
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}
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