1; RUN: llc -o - %s | FileCheck %s 2target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 3target triple = "x86_64-apple-macosx" 4 5; selectiondag stack protector uses a GuardReg which the fast-isel stack 6; protection code did not but the state was not reset properly. 7; The optnone attribute on @bar forces fast-isel. 8 9; CHECK-LABEL: foo: 10; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax 11define void @foo() #0 { 12entry: 13 %_tags = alloca [3 x i32], align 4 14 ret void 15} 16 17; CHECK-LABEL: bar: 18; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %{{r.x}} 19; CHECK-DAG: movq ___stack_chk_guard@GOTPCREL(%rip), %[[GUARD:r.x]] 20; CHECK-DAG: movq {{[0-9]+}}(%rsp), %[[CANARY:r.x]] 21; CHECK: subq %[[CANARY]], %[[GUARD]] 22define void @bar() #1 { 23entry: 24 %vt = alloca [2 x double], align 16 25 br i1 undef, label %cleanup.4091, label %for.cond.3850 26 27unreachable: 28 unreachable 29 30for.cond.3850: 31 br i1 undef, label %land.rhs.3853, label %land.end.3857 32 33land.rhs.3853: 34 br label %land.end.3857 35 36land.end.3857: 37 %0 = phi i1 [ false, %for.cond.3850 ], [ false, %land.rhs.3853 ] 38 br i1 %0, label %unreachable, label %unreachable 39 40cleanup.4091: 41 ret void 42} 43 44attributes #0 = { ssp } 45attributes #1 = { noinline optnone ssp } 46