| # RUN: llc -mtriple=arm64-apple-ios -start-before=localstackalloc -stop-after=prologepilog -o - %s | FileCheck %s |
| |
| --- | |
| @__stack_chk_guard = external global i8* |
| define i32 @main(i32, i8**) { |
| %StackGuardSlot = alloca i8* |
| unreachable |
| } |
| ... |
| --- |
| name: main |
| tracksRegLiveness: true |
| frameInfo: |
| # CHECK: stackSize: 544 |
| stackProtector: '%stack.0.StackGuardSlot' |
| stack: |
| - { id: 0, name: StackGuardSlot, size: 8, alignment: 8, stack-id: default } |
| # Verify that the offset assigned to the stack protector is at the top of the |
| # frame, covering the locals. |
| # CHECK: - { id: 0, name: StackGuardSlot, type: default, offset: -24, size: 8, |
| # CHECK-NEXT: alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| # CHECK-NEXT: local-offset: -8, debug-info-variable: '', debug-info-expression: '', |
| # CHECK-NEXT: debug-info-location: '' } |
| - { id: 1, size: 512, alignment: 1, stack-id: default } |
| - { id: 2, size: 4, alignment: 4, stack-id: default } |
| body: | |
| bb.0: |
| %25:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load (s64) from @__stack_chk_guard) |
| STRXui killed %25, %stack.0.StackGuardSlot, 0 :: (volatile store (s64) into %stack.0.StackGuardSlot) |
| %28:gpr64 = LDRXui %stack.0.StackGuardSlot, 0 :: (volatile load (s64) from %stack.0.StackGuardSlot) |
| %29:gpr64common = LOAD_STACK_GUARD :: (dereferenceable invariant load (s64) from @__stack_chk_guard) |
| RET_ReallyLR implicit undef $w0, implicit killed %28, implicit killed %29 |
| |
| ... |