| Matthias Braun | 4e7ded8 | 2015-08-26 20:46:52 +0000 | [diff] [blame] | 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 |
| Tim Shen | e885d5e | 2016-04-19 19:40:37 +0000 | [diff] [blame] | 11 | ; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax |
| Matthias Braun | 4e7ded8 | 2015-08-26 20:46:52 +0000 | [diff] [blame] | 12 | define void @foo() #0 { |
| 13 | entry: |
| 14 | %_tags = alloca [3 x i32], align 4 |
| 15 | ret void |
| 16 | } |
| 17 | |
| 18 | ; CHECK-LABEL: bar: |
| Tim Shen | e885d5e | 2016-04-19 19:40:37 +0000 | [diff] [blame] | 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]] |
| Matthias Braun | 4e7ded8 | 2015-08-26 20:46:52 +0000 | [diff] [blame] | 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 } |