llvm/test/CodeGen/MIR/X86/stack-objects.mir

# RUN: llc -mtriple=x86_64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses stack objects correctly.

--- |

  define i32 @test(i32 %a) #0 {
  entry:
    %b = alloca i32
    %x = alloca i64
    store i32 %a, ptr %b
    store i64 2, ptr %x
    %c = load i32, ptr %b
    ret i32 %c
  }

  attributes #0 = { "frame-pointer"="none" }

...
---
name:            test
frameInfo:
  maxAlignment:    8
# CHECK: stack:
# CHECK-NEXT: - { id: 0, name: b, type: default, offset: -12, size: 4, alignment: 4,
# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# CHECK-NEXT: - { id: 1, name: x, type: default, offset: -24, size: 8, alignment: 8,
# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# CHECK-NEXT: - { id: 2, name: '', type: spill-slot, offset: -32, size: 4, alignment: 4,
# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
stack:
  - { id: 0, name: b, offset: -12, size: 4, alignment: 4 }
  - { id: 1, name: x, offset: -24, size: 8, alignment: 8 }
  - { id: 2, type: spill-slot, offset: -32, size: 4, alignment: 4 }
body: |
  bb.0.entry:
    MOV32mr $rsp, 1, _, -4, _, $edi
    MOV64mi32 $rsp, 1, _, -16, _, 2
    $eax = MOV32rm $rsp, 1, _, -4, _
    RET64 $eax
...