35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
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# RUN: llc -mtriple=arm64-apple-ios -start-before=localstackalloc -stop-after=prologepilog -o - %s | FileCheck %s
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--- |
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@__stack_chk_guard = external global i8*
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define i32 @main(i32, i8**) {
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%StackGuardSlot = alloca i8*
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unreachable
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}
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...
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---
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name: main
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tracksRegLiveness: true
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frameInfo:
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# CHECK: stackSize: 544
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stackProtector: '%stack.0.StackGuardSlot'
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stack:
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- { id: 0, name: StackGuardSlot, size: 8, alignment: 8, stack-id: default }
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# Verify that the offset assigned to the stack protector is at the top of the
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# frame, covering the locals.
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# CHECK: - { id: 0, name: StackGuardSlot, type: default, offset: -24, size: 8,
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# CHECK-NEXT: alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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# CHECK-NEXT: local-offset: -8, debug-info-variable: '', debug-info-expression: '',
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# CHECK-NEXT: debug-info-location: '' }
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- { id: 1, size: 512, alignment: 1, stack-id: default }
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- { id: 2, size: 4, alignment: 4, stack-id: default }
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body: |
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bb.0:
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%25:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load 8 from @__stack_chk_guard)
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STRXui killed %25, %stack.0.StackGuardSlot, 0 :: (volatile store 8 into %stack.0.StackGuardSlot)
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%28:gpr64 = LDRXui %stack.0.StackGuardSlot, 0 :: (volatile load 8 from %stack.0.StackGuardSlot)
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%29:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load 8 from @__stack_chk_guard)
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RET_ReallyLR implicit undef $w0, implicit killed %28, implicit killed %29
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...
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