47 lines
1.2 KiB
LLVM
47 lines
1.2 KiB
LLVM
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; RUN: llc -o - %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx"
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; selectiondag stack protector uses a GuardReg which the fast-isel stack
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; protection code did not but the state was not reset properly.
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; The optnone attribute on @bar forces fast-isel.
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; CHECK-LABEL: foo:
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; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax
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; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax
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define void @foo() #0 {
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entry:
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%_tags = alloca [3 x i32], align 4
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ret void
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}
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; CHECK-LABEL: bar:
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; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %{{r.x}}
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; CHECK-DAG: movq ___stack_chk_guard@GOTPCREL(%rip), %[[GUARD:r.x]]
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; CHECK-DAG: movq {{[0-9]+}}(%rsp), %[[CANARY:r.x]]
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; CHECK: subq %[[CANARY]], %[[GUARD]]
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define void @bar() #1 {
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entry:
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%vt = alloca [2 x double], align 16
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br i1 undef, label %cleanup.4091, label %for.cond.3850
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unreachable:
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unreachable
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for.cond.3850:
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br i1 undef, label %land.rhs.3853, label %land.end.3857
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land.rhs.3853:
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br label %land.end.3857
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land.end.3857:
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%0 = phi i1 [ false, %for.cond.3850 ], [ false, %land.rhs.3853 ]
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br i1 %0, label %unreachable, label %unreachable
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cleanup.4091:
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ret void
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}
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attributes #0 = { ssp }
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attributes #1 = { noinline optnone ssp }
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