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      1 # RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
      2 # This test ensures that the MIR parser parses the stack object's debug info
      3 # correctly.
      4 --- |
      5   declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
      6 
      7   define void @foo() #1 {
      8   entry:
      9     %x.i = alloca i8, align 1
     10     %y.i = alloca [256 x i8], align 16
     11     %0 = bitcast [256 x i8]* %y.i to i8*
     12     br label %for.body
     13 
     14   for.body:
     15     %1 = bitcast [256 x i8]* %y.i to i8*
     16     call void @llvm.lifetime.end(i64 -1, i8* %1) #3
     17     call void @llvm.lifetime.start(i64 -1, i8* %0) #3
     18     call void @llvm.dbg.declare(metadata i8* %0, metadata !4, metadata !DIExpression()) #3, !dbg !7
     19     br label %for.body
     20   }
     21 
     22   declare void @llvm.lifetime.start(i64, i8* nocapture) #2
     23 
     24   declare void @llvm.lifetime.end(i64, i8* nocapture) #2
     25 
     26   attributes #0 = { nounwind readnone }
     27   attributes #1 = { nounwind ssp uwtable }
     28   attributes #2 = { nounwind argmemonly }
     29   attributes #3 = { nounwind }
     30 
     31   !llvm.dbg.cu = !{!0}
     32   !llvm.module.flags = !{!3}
     33 
     34   !0 = distinct !DICompileUnit(language: DW_LANG_C89, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2)
     35   !1 = !DIFile(filename: "t.c", directory: "")
     36   !2 = !{}
     37   !3 = !{i32 1, !"Debug Info Version", i32 3}
     38   !4 = !DILocalVariable(name: "x", scope: !5, file: !1, line: 16, type: !8)
     39   !5 = distinct !DISubprogram(scope: null, isLocal: false, isDefinition: true, isOptimized: false, unit: !0)
     40   !6 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
     41   !7 = !DILocation(line: 0, scope: !5)
     42   !8 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 2048, align: 8, elements: !9)
     43   !9 = !{!10}
     44   !10 = !DISubrange(count: 256)
     45 ...
     46 ---
     47 name:            foo
     48 tracksRegLiveness: true
     49 frameInfo:
     50   maxAlignment:    16
     51 # CHECK-LABEL: foo
     52 # CHECK: stack:
     53 # CHECK:  - { id: 0, name: y.i, type: default, offset: 0, size: 256, alignment: 16,
     54 # CHECK-NEXT: callee-saved-register: '', callee-saved-restored: true,
     55 # CHECK-NEXT: debug-info-variable: '!4', debug-info-expression: '!DIExpression()',
     56 # CHECK-NEXT: debug-info-location: '!10' }
     57 stack:
     58   - { id: 0, name: y.i, offset: 0, size: 256, alignment: 16,
     59       debug-info-variable: '!4', debug-info-expression: '!DIExpression()',
     60       debug-info-location: '!7' }
     61 body: |
     62   bb.0.entry:
     63     successors: %bb.1.for.body
     64   bb.1.for.body:
     65     successors: %bb.1.for.body
     66 
     67     DBG_VALUE %stack.0.y.i, 0, !4, !DIExpression(), debug-location !7
     68     JMP_1 %bb.1.for.body
     69 ...
     70