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 3 4; Make sure the stack protect not infinitly check __stack_chk_fail. 5define 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 18entry: 19 tail call void @foo() noreturn 20 unreachable 21} 22 23declare void @foo() noreturn 24 25attributes #0 = { noreturn nounwind sspreq } 26