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