2010-08-04-StackVariable.ll
7.02 KB
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; RUN: llc -mtriple arm-apple-darwin -O0 -filetype asm -o - %s | FileCheck %s
; Use DW_OP_breg in variable's location expression if the variable is in a stack slot.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:64"
target triple = "arm-apple-darwin"
%struct.SVal = type { i8*, i32 }
define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp !dbg !17 {
entry:
%"alloca point" = bitcast i32 0 to i32
call void @llvm.dbg.value(metadata i32 %i, metadata !23, metadata !DIExpression()), !dbg !24
call void @llvm.dbg.value(metadata %struct.SVal* %location, metadata !25, metadata !DIExpression()), !dbg !24
%0 = icmp ne i32 %i, 0, !dbg !27
br i1 %0, label %bb, label %bb1, !dbg !27
bb:
%1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !29
%2 = load i32, i32* %1, align 8, !dbg !29
%3 = add i32 %2, %i, !dbg !29
br label %bb2, !dbg !29
bb1:
%4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !30
%5 = load i32, i32* %4, align 8, !dbg !30
%6 = sub i32 %5, 1, !dbg !30
br label %bb2, !dbg !30
bb2:
%.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ]
br label %return, !dbg !29
return:
ret i32 %.0, !dbg !29
}
define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2 !dbg !16 {
entry:
%"alloca point" = bitcast i32 0 to i32
call void @llvm.dbg.value(metadata %struct.SVal* %this, metadata !31, metadata !DIExpression()), !dbg !34
%0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34
store i8* null, i8** %0, align 8, !dbg !34
%1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34
store i32 0, i32* %1, align 8, !dbg !34
br label %return, !dbg !34
return:
ret void, !dbg !35
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define i32 @main() nounwind ssp !dbg !20 {
entry:
%0 = alloca %struct.SVal
%v = alloca %struct.SVal
%"alloca point" = bitcast i32 0 to i32
call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !DIExpression()), !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
store i32 1, i32* %1, align 8, !dbg !42
%2 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 0, !dbg !43
%3 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 0, !dbg !43
%4 = load i8*, i8** %3, align 8, !dbg !43
store i8* %4, i8** %2, align 8, !dbg !43
%5 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 1, !dbg !43
%6 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !43
%7 = load i32, i32* %6, align 8, !dbg !43
store i32 %7, i32* %5, align 8, !dbg !43
%8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43
call void @llvm.dbg.value(metadata i32 %8, metadata !44, metadata !DIExpression()), !dbg !43
br label %return, !dbg !45
return:
ret i32 0, !dbg !45
}
declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!3}
!llvm.module.flags = !{!49}
!0 = !DISubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !14)
!1 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 64, align: 64, file: !48, elements: !4)
!2 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: FullDebug, file: !48, enums: !47, retainedTypes: !47, globals: !47, imports: !47)
!4 = !{!5, !7, !0, !9}
!5 = !DIDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !48, scope: !1, baseType: !6)
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !48, baseType: null)
!7 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !48, scope: !1, baseType: !8)
!8 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
!9 = !DISubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !10)
!10 = !DISubroutineType(types: !11)
!11 = !{null, !12, !13}
!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !48, baseType: !1)
!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!14 = !DISubroutineType(types: !15)
!15 = !{null, !12}
!16 = distinct !DISubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !1, type: !14)
!17 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !2, type: !18)
!18 = !DISubroutineType(types: !19)
!19 = !{!13, !13, !1}
!20 = distinct !DISubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !2, type: !21)
!21 = !DISubroutineType(types: !22)
!22 = !{!13}
!23 = !DILocalVariable(name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13)
!24 = !DILocation(line: 16, scope: !17)
!25 = !DILocalVariable(name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26)
!26 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 32, align: 32, file: !48, scope: !2, baseType: !1)
!27 = !DILocation(line: 17, scope: !28)
!28 = distinct !DILexicalBlock(line: 16, column: 0, file: !2, scope: !17)
!29 = !DILocation(line: 18, scope: !28)
!30 = !DILocation(line: 20, scope: !28)
!31 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32)
!32 = !DIDerivedType(tag: DW_TAG_const_type, flags: DIFlagArtificial, file: !48, scope: !2, baseType: !33)
!33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !48, scope: !2, baseType: !1)
!34 = !DILocation(line: 11, scope: !16)
!35 = !DILocation(line: 11, scope: !36)
!36 = distinct !DILexicalBlock(line: 11, column: 0, file: !48, scope: !37)
!37 = distinct !DILexicalBlock(line: 11, column: 0, file: !48, scope: !16)
!38 = !DILocalVariable(name: "v", line: 24, scope: !39, file: !2, type: !1)
!39 = distinct !DILexicalBlock(line: 23, column: 0, file: !48, scope: !40)
!40 = distinct !DILexicalBlock(line: 23, column: 0, file: !48, scope: !20)
!41 = !DILocation(line: 24, scope: !39)
!42 = !DILocation(line: 25, scope: !39)
!43 = !DILocation(line: 26, scope: !39)
!44 = !DILocalVariable(name: "k", line: 26, scope: !39, file: !2, type: !13)
!45 = !DILocation(line: 27, scope: !39)
!47 = !{}
!48 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
!49 = !{i32 1, !"Debug Info Version", i32 3}
; CHECK: @ DW_OP_breg