1 ; RUN: llc -o - %s | FileCheck %s 2 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 3 target 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 11 ; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax 12 define void @foo() #0 { 13 entry: 14 %_tags = alloca [3 x i32], align 4 15 ret void 16 } 17 18 ; CHECK-LABEL: bar: 19 ; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %{{r.x}} 20 ; CHECK-DAG: movq ___stack_chk_guard@GOTPCREL(%rip), %[[GUARD:r.x]] 21 ; CHECK-DAG: movq {{[0-9]+}}(%rsp), %[[CANARY:r.x]] 22 ; CHECK: subq %[[CANARY]], %[[GUARD]] 23 define void @bar() #1 { 24 entry: 25 %vt = alloca [2 x double], align 16 26 br i1 undef, label %cleanup.4091, label %for.cond.3850 27 28 unreachable: 29 unreachable 30 31 for.cond.3850: 32 br i1 undef, label %land.rhs.3853, label %land.end.3857 33 34 land.rhs.3853: 35 br label %land.end.3857 36 37 land.end.3857: 38 %0 = phi i1 [ false, %for.cond.3850 ], [ false, %land.rhs.3853 ] 39 br i1 %0, label %unreachable, label %unreachable 40 41 cleanup.4091: 42 ret void 43 } 44 45 attributes #0 = { ssp } 46 attributes #1 = { noinline optnone ssp } 47
