1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %s | FileCheck %s
4 ; Make sure the stack protect not infinitly check __stack_chk_fail.
5 define dso_local void @__stack_chk_fail() local_unnamed_addr #0 {
6 ; CHECK-LABEL: __stack_chk_fail:
7 ; CHECK: # %bb.0: # %entry
8 ; CHECK-NEXT: pushq %rax
9 ; CHECK-NEXT: movq %fs:40, %rax
10 ; CHECK-NEXT: movq %rax, (%rsp)
11 ; CHECK-NEXT: movq %fs:40, %rax
12 ; CHECK-NEXT: cmpq (%rsp), %rax
13 ; CHECK-NEXT: jne .LBB0_2
14 ; CHECK-NEXT: # %bb.1: # %SP_return
15 ; CHECK-NEXT: callq foo@PLT
16 ; CHECK-NEXT: .LBB0_2: # %CallStackCheckFailBlk
17 ; CHECK-NEXT: callq __stack_chk_fail
19 tail call void @foo() noreturn
23 declare void @foo() noreturn
25 attributes #0 = { noreturn nounwind sspreq }