1 # RUN: llc -mtriple=arm64-apple-ios -start-before=localstackalloc -stop-after=prologepilog -o - %s | FileCheck %s
4 @__stack_chk_guard = external global ptr
5 define i32 @main(i32, ptr) {
6 %StackGuardSlot = alloca ptr
12 tracksRegLiveness: true
14 # CHECK: stackSize: 544
15 stackProtector: '%stack.0.StackGuardSlot'
17 - { id: 0, name: StackGuardSlot, size: 8, alignment: 8, stack-id: default }
18 # Verify that the offset assigned to the stack protector is at the top of the
19 # frame, covering the locals.
20 # CHECK: - { id: 0, name: StackGuardSlot, type: default, offset: -24, size: 8,
21 # CHECK-NEXT: alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
22 # CHECK-NEXT: local-offset: -8, debug-info-variable: '', debug-info-expression: '',
23 # CHECK-NEXT: debug-info-location: '' }
24 - { id: 1, size: 512, alignment: 1, stack-id: default }
25 - { id: 2, size: 4, alignment: 4, stack-id: default }
28 %25:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
29 STRXui killed %25, %stack.0.StackGuardSlot, 0 :: (volatile store (s64) into %stack.0.StackGuardSlot)
30 %28:gpr64 = LDRXui %stack.0.StackGuardSlot, 0 :: (volatile load (s64) from %stack.0.StackGuardSlot)
31 %29:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load (s64) from @__stack_chk_guard)
32 RET_ReallyLR implicit undef $w0, implicit killed %28, implicit killed %29