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