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llvm-6502/test/CodeGen/X86/2010-08-04-StackVariable.ll
Duncan P. N. Exon Smith 77a0728d96 DebugInfo: Fix bad debug info for compile units and types 
Fix debug info in these tests, which started failing with a WIP patch to
verify compile units and types.  The problems look like they were all
caused by bitrot.  They fell into these categories:

  - Using `!{i32 0}` instead of `!{}`.
  - Using `!{null}` instead of `!{}`.
  - Using `!MDExpression()` instead of `!{}`.
  - Using `!8` instead of `!{!8}`.
  - `file:` references that pointed at `MDCompileUnit`s instead of the
    same `MDFile` as the compile unit.
  - `file:` references that were numerically off-by-one or (off-by-ten).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233415 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-27 20:46:33 +00:00

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; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s | grep DW_OP_breg7
; Use DW_OP_breg7 in variable's location expression if the variable is in a stack slot.
%struct.SVal = type { i8*, i32 }
define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp {
entry:
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !MDExpression()), !dbg !24
call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !MDExpression()), !dbg !24
%0 = icmp ne i32 %i, 0, !dbg !27 ; <i1> [#uses=1]
br i1 %0, label %bb, label %bb1, !dbg !27
bb: ; preds = %entry
%1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !29 ; <i32*> [#uses=1]
%2 = load i32, i32* %1, align 8, !dbg !29 ; <i32> [#uses=1]
%3 = add i32 %2, %i, !dbg !29 ; <i32> [#uses=1]
br label %bb2, !dbg !29
bb1: ; preds = %entry
%4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !30 ; <i32*> [#uses=1]
%5 = load i32, i32* %4, align 8, !dbg !30 ; <i32> [#uses=1]
%6 = sub i32 %5, 1, !dbg !30 ; <i32> [#uses=1]
br label %bb2, !dbg !30
bb2: ; preds = %bb1, %bb
%.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ] ; <i32> [#uses=1]
br label %return, !dbg !29
return: ; preds = %bb2
ret i32 %.0, !dbg !29
}
define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2 {
entry:
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !MDExpression()), !dbg !34
%0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1]
store i8* null, i8** %0, align 8, !dbg !34
%1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1]
store i32 0, i32* %1, align 8, !dbg !34
br label %return, !dbg !34
return: ; preds = %entry
ret void, !dbg !35
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define i32 @main() nounwind ssp {
entry:
%0 = alloca %struct.SVal ; <%struct.SVal*> [#uses=3]
%v = alloca %struct.SVal ; <%struct.SVal*> [#uses=4]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !MDExpression()), !dbg !41
call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41
%1 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1]
store i32 1, i32* %1, align 8, !dbg !42
%2 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
%3 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
%4 = load i8*, i8** %3, align 8, !dbg !43 ; <i8*> [#uses=1]
store i8* %4, i8** %2, align 8, !dbg !43
%5 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
%6 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
%7 = load i32, i32* %6, align 8, !dbg !43 ; <i32> [#uses=1]
store i32 %7, i32* %5, align 8, !dbg !43
%8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0]
call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !MDExpression()), !dbg !43
br label %return, !dbg !45
return: ; preds = %entry
ret i32 0, !dbg !45
}
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!3}
!llvm.module.flags = !{!49}
!46 = !{!16, !17, !20}
!0 = !MDSubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !47, scope: !1, type: !14)
!1 = !MDCompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 128, align: 64, file: !47, scope: !2, elements: !4)
!2 = !MDFile(filename: "small.cc", directory: "/Users/manav/R8248330")
!3 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 1, file: !47, enums: !48, retainedTypes: !48, subprograms: !46, imports: null)
!4 = !{!5, !7, !0, !9}
!5 = !MDDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !47, scope: !1, baseType: !6)
!6 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: null)
!7 = !MDDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !47, scope: !1, baseType: !8)
!8 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
!9 = !MDSubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 12, file: !47, scope: !1, type: !10)
!10 = !MDSubroutineType(types: !11)
!11 = !{null, !12, !13}
!12 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !1)
!13 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!14 = !MDSubroutineType(types: !15)
!15 = !{null, !12}
!16 = !MDSubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !47, scope: !1, type: !14, function: void (%struct.SVal*)* @_ZN4SValC1Ev)
!17 = !MDSubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 16, file: !47, scope: !2, type: !18, function: i32 (i32, %struct.SVal*)* @_Z3fooi4SVal)
!18 = !MDSubroutineType(types: !19)
!19 = !{!13, !13, !1}
!20 = !MDSubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 23, file: !47, scope: !2, type: !21, function: i32 ()* @main)
!21 = !MDSubroutineType(types: !22)
!22 = !{!13}
!23 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "i", line: 16, arg: 0, scope: !17, file: !2, type: !13)
!24 = !MDLocation(line: 16, scope: !17)
!25 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "location", line: 16, arg: 0, scope: !17, file: !2, type: !26)
!26 = !MDDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 64, align: 64, file: !47, scope: !2, baseType: !1)
!27 = !MDLocation(line: 17, scope: !28)
!28 = distinct !MDLexicalBlock(line: 16, column: 0, file: !47, scope: !17)
!29 = !MDLocation(line: 18, scope: !28)
!30 = !MDLocation(line: 20, scope: !28)
!31 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 11, arg: 0, scope: !16, file: !2, type: !32)
!32 = !MDDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !33)
!33 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: !1)
!34 = !MDLocation(line: 11, scope: !16)
!35 = !MDLocation(line: 11, scope: !36)
!36 = distinct !MDLexicalBlock(line: 11, column: 0, file: !47, scope: !37)
!37 = distinct !MDLexicalBlock(line: 11, column: 0, file: !47, scope: !16)
!38 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "v", line: 24, scope: !39, file: !2, type: !1)
!39 = distinct !MDLexicalBlock(line: 23, column: 0, file: !47, scope: !40)
!40 = distinct !MDLexicalBlock(line: 23, column: 0, file: !47, scope: !20)
!41 = !MDLocation(line: 24, scope: !39)
!42 = !MDLocation(line: 25, scope: !39)
!43 = !MDLocation(line: 26, scope: !39)
!44 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "k", line: 26, scope: !39, file: !2, type: !13)
!45 = !MDLocation(line: 27, scope: !39)
!47 = !MDFile(filename: "small.cc", directory: "/Users/manav/R8248330")
!48 = !{}
!49 = !{i32 1, !"Debug Info Version", i32 3}
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