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