1d656ae28SXiang1 Zhang; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2d656ae28SXiang1 Zhang; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %s | FileCheck %s 3d656ae28SXiang1 Zhang 4d656ae28SXiang1 Zhang; Make sure the stack protect not infinitly check __stack_chk_fail. 5d656ae28SXiang1 Zhangdefine dso_local void @__stack_chk_fail() local_unnamed_addr #0 { 6d656ae28SXiang1 Zhang; CHECK-LABEL: __stack_chk_fail: 7d656ae28SXiang1 Zhang; CHECK: # %bb.0: # %entry 8d656ae28SXiang1 Zhang; CHECK-NEXT: pushq %rax 9d656ae28SXiang1 Zhang; CHECK-NEXT: movq %fs:40, %rax 10d656ae28SXiang1 Zhang; CHECK-NEXT: movq %rax, (%rsp) 11d656ae28SXiang1 Zhang; CHECK-NEXT: movq %fs:40, %rax 12d656ae28SXiang1 Zhang; CHECK-NEXT: cmpq (%rsp), %rax 13d656ae28SXiang1 Zhang; CHECK-NEXT: jne .LBB0_2 14d656ae28SXiang1 Zhang; CHECK-NEXT: # %bb.1: # %SP_return 15*fc4494dfSNick Desaulniers; CHECK-NEXT: callq foo@PLT 16d656ae28SXiang1 Zhang; CHECK-NEXT: .LBB0_2: # %CallStackCheckFailBlk 17d656ae28SXiang1 Zhang; CHECK-NEXT: callq __stack_chk_fail 18d656ae28SXiang1 Zhangentry: 19*fc4494dfSNick Desaulniers tail call void @foo() noreturn 20d656ae28SXiang1 Zhang unreachable 21d656ae28SXiang1 Zhang} 22d656ae28SXiang1 Zhang 23*fc4494dfSNick Desaulniersdeclare void @foo() noreturn 24d656ae28SXiang1 Zhang 25d656ae28SXiang1 Zhangattributes #0 = { noreturn nounwind sspreq } 26