llvm-project/llvm/test/CodeGen/AArch64/stack-id-pei-alloc.mir

# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass=prologepilog %s -o - | FileCheck %s
...
# Ensure that objects with StackID > 0 are not allocated on the default stack
# (will not be allocated an offset) and are not considered in the calculation of
# the StackSize.
# CHECK:      name: test_allocate
# CHECK:      stackSize: 16
# CHECK:      stack:
# CHECK:        id: 0, name: '', type: default, offset: -8, size: 8, alignment: 8,
# CHECK-NEXT:   stack-id: default
# CHECK:        id: 1, name: '', type: default, offset: -16, size: 8, alignment: 8,
# CHECK-NEXT:   stack-id: default
# CHECK:        id: 2, name: '', type: default, offset: 0, size: 8, alignment: 8,
# CHECK-NEXT:   stack-id: noalloc
name:            test_allocate
frameInfo:
  maxAlignment:  16
stack:
  - { id: 0, stack-id: default, size: 8, alignment: 8, offset: 0 }
  - { id: 1, stack-id: default, size: 8, alignment: 8, offset: 0 }
  - { id: 2, stack-id: noalloc, size: 8, alignment: 8, offset: 0 }
body:             |
  bb.0.entry:
    RET_ReallyLR
---
...
# Ensure MaxAlignment becomes '32' even though we also have an object
# with alignment of 64. MaxAlignment only pertains to the default stack
# (StackID 0), so objects associated with a different StackID should
# not be considered.
#
# CHECK: name: test_maxalign
# CHECK: maxAlignment: 32
name:            test_maxalign
frameInfo:
  maxAlignment:  16
stack:
  - { id: 0, stack-id: default, size: 16, alignment: 32 }
  - { id: 1, stack-id: noalloc, size: 16, alignment: 64 }
body:             |
  bb.0.entry:
    RET_ReallyLR
---
...
# CHECK: name: test_maxalign_fixedstack
# CHECK: maxAlignment: 32
name:            test_maxalign_fixedstack
frameInfo:
  maxAlignment:  16
fixedStack:
  - { id: 0, stack-id: default, size: 16, alignment: 32 }
  - { id: 1, stack-id: noalloc, size: 16, alignment: 64 }
body:             |
  bb.0.entry:
    RET_ReallyLR
---