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1# RUN: llc -mtriple=arm64-apple-ios -start-before=localstackalloc -stop-after=prologepilog -o - %s | FileCheck %s2 3--- |4 @__stack_chk_guard = external global ptr5 define i32 @main(i32, ptr) {6 %StackGuardSlot = alloca ptr7 unreachable8 }9...10---11name: main12tracksRegLiveness: true13frameInfo:14# CHECK: stackSize: 54415 stackProtector: '%stack.0.StackGuardSlot'16stack: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 the19# 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 }26body: |27 bb.0:28 %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 %2933 34...35