[SLP]Reduce number of alternate instruction, where possible
[llvm-project.git] / compiler-rt / test / lsan / TestCases / use_registers.cpp
blob9bc7f56859fe43885eb6b370f69d93821169781b
1 // Test that registers of running threads are included in the root set.
2 // RUN: %clangxx_lsan -pthread %s -o %t
3 // RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0" not %run %t 2>&1 | FileCheck %s
4 // RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=1" %run %t 2>&1
5 // RUN: %env_lsan_opts="" %run %t 2>&1
7 #include "sanitizer_common/print_address.h"
8 #include <assert.h>
9 #include <pthread.h>
10 #include <sched.h>
11 #include <stdio.h>
12 #include <stdlib.h>
14 int sync = 0;
16 extern "C" void *registers_thread_func(void *) {
17 void *p = malloc(1337);
18 print_address("Test alloc: ", 1, p);
19 fflush(stderr);
21 while(true) {
22 // To store the pointer, choose a register which is unlikely to be reused by
23 // a function call.
24 #if defined(__i386__) || defined(__i686__)
25 asm("mov %0, %%edi"
27 : "r"(p));
28 #elif defined(__x86_64__)
29 asm("mov %0, %%r15"
31 : "r"(p));
32 #elif defined(__mips__)
33 asm("move $16, %0"
35 : "r"(p));
36 #elif defined(__arm__)
37 asm("mov r5, %0"
39 : "r"(p));
40 #elif defined(__aarch64__)
41 // x9-10 are used. x11-12 are probably used.
42 // So we pick x13 to be safe and x14 as a backup.
43 // (x13 known to be used on Ubuntu Focal)
44 asm("mov x13, %0\n"
45 "mov x14, %0"
47 : "r"(p));
48 #elif defined(__loongarch_lp64)
49 asm("move $s8, %0" : : "r"(p));
50 #elif defined(__powerpc__)
51 asm("mr 30, %0"
53 : "r"(p));
54 #elif defined(__s390x__)
55 asm("lgr %%r10, %0"
57 : "r"(p));
58 #elif defined(__riscv)
59 asm("mv s11, %0"
61 : "r"(p));
62 #else
63 #error "Test is not supported on this architecture."
64 #endif
65 __sync_fetch_and_xor(&sync, 1);
69 int main() {
70 pthread_t thread_id;
71 int res = pthread_create(&thread_id, 0, registers_thread_func, nullptr);
72 assert(res == 0);
73 while (!__sync_fetch_and_xor(&sync, 0))
74 sched_yield();
75 return 0;
77 // CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
78 // CHECK: LeakSanitizer: detected memory leaks
79 // CHECK: [[ADDR]] (1337 bytes)
80 // CHECK: SUMMARY: {{.*}}Sanitizer: