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-rw-r--r--llvm/test/Transforms/InstCombine/lower-dbg-declare.ll239
1 files changed, 85 insertions, 154 deletions
diff --git a/llvm/test/Transforms/InstCombine/lower-dbg-declare.ll b/llvm/test/Transforms/InstCombine/lower-dbg-declare.ll
index 44de3fc7531..0277086659a 100644
--- a/llvm/test/Transforms/InstCombine/lower-dbg-declare.ll
+++ b/llvm/test/Transforms/InstCombine/lower-dbg-declare.ll
@@ -3,181 +3,112 @@
; This tests dbg.declare lowering for CallInst users of an alloca. The
; resulting dbg.value expressions should add a deref to the declare's expression.
-; Hand-reduced from this example (-g -Og -fsanitize=address):
-
-; static volatile int sink;
-; struct OneElementVector {
-; int Element;
-; OneElementVector(int Element) : Element(Element) { sink = Element; }
-; bool empty() const { return false; }
-; };
-; using container = OneElementVector;
-; static void escape(container &c) { sink = c.Element; }
-; int main() {
-; container d1 = {42};
-; while (!d1.empty())
-; escape(d1);
-; return 0;
-; }
-
-target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-apple-macosx10.13.0"
-
-%struct.OneElementVector = type { i32 }
-
-define i1 @escape(%struct.OneElementVector* %d1) {
- ret i1 false
-}
+; Hand-reduced from this example (-g -Og -mllvm -disable-llvm-optzns -gno-column-info):
+
+; static volatile int sink;
+; static void escape(int &c) { sink = c; }
+; static bool empty ( int p1 ) { return p1 == 0; }
+; int main() {
+; int d1 = 42;
+; while (!empty(d1))
+; escape(d1);
+; return 0;
+; }
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@_ZL4sink = internal global i32 0, align 4, !dbg !0
; CHECK-LABEL: @main
-define i32 @main() !dbg !15 {
+define dso_local i32 @main() !dbg !12 {
entry:
- %d1 = alloca %struct.OneElementVector, align 4
- %0 = bitcast %struct.OneElementVector* %d1 to i8*, !dbg !34
-
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var:%.*]], metadata !DIExpression(DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- call void @llvm.dbg.declare(metadata %struct.OneElementVector* %d1, metadata !19, metadata !DIExpression()), !dbg !35
- call i1 @escape(%struct.OneElementVector* %d1)
- br label %while.cond, !dbg !37
+ %retval = alloca i32, align 4
+ %d1 = alloca i32, align 4
+ store i32 0, i32* %retval, align 4
+ %0 = bitcast i32* %d1 to i8*, !dbg !17
+ call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4, !dbg !17
+; CHECK: dbg.value(metadata i32 42, metadata [[METADATA_IDX1:![0-9]+]], metadata !DIExpression())
+; CHECK-NEXT: store
+ call void @llvm.dbg.declare(metadata i32* %d1, metadata !16, metadata !DIExpression()), !dbg !17
+ store i32 42, i32* %d1, align 4, !dbg !17
+ br label %while.cond, !dbg !22
while.cond: ; preds = %while.body, %entry
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var]], metadata !DIExpression(DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- %call = call i1 @escape(%struct.OneElementVector* %d1), !dbg !38
- %lnot = xor i1 %call, true, !dbg !39
- br i1 %lnot, label %while.body, label %while.end, !dbg !37
+; CHECK: dbg.value(metadata i32 %1, metadata [[METADATA_IDX1]], metadata !DIExpression())
+; CHECK-NEXT: call zeroext i1 @_ZL5emptyi
+ %1 = load i32, i32* %d1, align 4, !dbg !22
+ %call = call zeroext i1 @_ZL5emptyi(i32 %1), !dbg !22
+ %lnot = xor i1 %call, true, !dbg !22
+ br i1 %lnot, label %while.body, label %while.end, !dbg !22
while.body: ; preds = %while.cond
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var]], metadata !DIExpression(DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- call i1 @escape(%struct.OneElementVector* %d1)
- br label %while.cond, !dbg !37, !llvm.loop !42
+; CHECK: dbg.value(metadata i32* %d1, metadata [[METADATA_IDX1]], metadata !DIExpression(DW_OP_deref))
+; CHECK-NEXT: call void @_ZL6escapeRi
+ call void @_ZL6escapeRi(i32* dereferenceable(4) %d1), !dbg !23
+ br label %while.cond, !dbg !22, !llvm.loop !24
while.end: ; preds = %while.cond
- ret i32 0, !dbg !45
+ %2 = bitcast i32* %d1 to i8*, !dbg !25
+ call void @llvm.lifetime.end.p0i8(i64 4, i8* %2) #4, !dbg !25
+ ret i32 0, !dbg !26
}
-; CHECK-LABEL: @main2
-define i32 @main2() {
-entry:
- %d1 = alloca %struct.OneElementVector, align 4
- %0 = bitcast %struct.OneElementVector* %d1 to i8*, !dbg !34
-
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var:%.*]], metadata !DIExpression(DW_OP_lit0, DW_OP_mul, DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- call void @llvm.dbg.declare(metadata %struct.OneElementVector* %d1, metadata !19, metadata !DIExpression(DW_OP_lit0, DW_OP_mul)), !dbg !35
- call i1 @escape(%struct.OneElementVector* %d1)
- br label %while.cond, !dbg !37
+declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
-while.cond: ; preds = %while.body, %entry
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var]], metadata !DIExpression(DW_OP_lit0, DW_OP_mul, DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- %call = call i1 @escape(%struct.OneElementVector* %d1), !dbg !38
- %lnot = xor i1 %call, true, !dbg !39
- br i1 %lnot, label %while.body, label %while.end, !dbg !37
+declare void @llvm.dbg.declare(metadata, metadata, metadata)
-while.body: ; preds = %while.cond
-; CHECK: dbg.value(metadata %struct.OneElementVector* [[var]], metadata !DIExpression(DW_OP_lit0, DW_OP_mul, DW_OP_deref))
-; CHECK-NEXT: call i1 @escape
- call i1 @escape(%struct.OneElementVector* %d1)
- br label %while.cond, !dbg !37, !llvm.loop !42
+define internal zeroext i1 @_ZL5emptyi(i32 %p1) !dbg !27 {
+ ret i1 false
+}
-while.end: ; preds = %while.cond
- ret i32 0, !dbg !45
+define internal void @_ZL6escapeRi(i32* dereferenceable(4) %c) #3 !dbg !34 {
+ ret void
}
-declare void @llvm.dbg.declare(metadata, metadata, metadata)
+declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
!llvm.dbg.cu = !{!2}
-!llvm.asan.globals = !{!8}
-!llvm.module.flags = !{!10, !11, !12, !13}
-!llvm.ident = !{!14}
+!llvm.module.flags = !{!8, !9, !10}
+!llvm.ident = !{!11}
+
+; CHECK: DIGlobalVariableExpression
+; CHECK: [[METADATA_IDX1]] = !DILocalVariable(name: "d1"
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "sink", linkageName: "_ZL4sink", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk 337207) (llvm/trunk 337204)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
-!3 = !DIFile(filename: "test.cc", directory: "/Users/vsk/src/builds/llvm.org-master-RA")
+!1 = distinct !DIGlobalVariable(name: "sink", linkageName: "_ZL4sink", scope: !2, file: !3, line: 2, type: !6, isLocal: true, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "lower-dbg-declare.cpp", directory: "")
!4 = !{}
!5 = !{!0}
!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!8 = !{}
-!9 = !{!"test.cc", i32 1, i32 21}
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{i32 7, !"PIC Level", i32 2}
-!14 = !{!"clang version 7.0.0 (trunk 337207) (llvm/trunk 337204)"}
-!15 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 18, type: !16, isLocal: false, isDefinition: true, scopeLine: 18, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !18)
-!16 = !DISubroutineType(types: !17)
-!17 = !{!7}
-!18 = !{!19}
-!19 = !DILocalVariable(name: "d1", scope: !15, file: !3, line: 21, type: !20)
-!20 = !DIDerivedType(tag: DW_TAG_typedef, name: "container", file: !3, line: 12, baseType: !21)
-!21 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "OneElementVector", file: !3, line: 3, size: 32, flags: DIFlagTypePassByValue, elements: !22, identifier: "_ZTS16OneElementVector")
-!22 = !{!23, !24, !28}
-!23 = !DIDerivedType(tag: DW_TAG_member, name: "Element", scope: !21, file: !3, line: 4, baseType: !7, size: 32)
-!24 = !DISubprogram(name: "OneElementVector", scope: !21, file: !3, line: 6, type: !25, isLocal: false, isDefinition: false, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true)
-!25 = !DISubroutineType(types: !26)
-!26 = !{null, !27, !7}
-!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!28 = !DISubprogram(name: "empty", linkageName: "_ZNK16OneElementVector5emptyEv", scope: !21, file: !3, line: 8, type: !29, isLocal: false, isDefinition: false, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true)
-!29 = !DISubroutineType(types: !30)
-!30 = !{!31, !32}
-!31 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean)
-!32 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !33, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!33 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !21)
-!34 = !DILocation(line: 21, column: 3, scope: !15)
-!35 = !DILocation(line: 21, column: 13, scope: !15)
-!36 = !DILocation(line: 21, column: 18, scope: !15)
-!37 = !DILocation(line: 22, column: 3, scope: !15)
-!38 = !DILocation(line: 22, column: 14, scope: !15)
-!39 = !DILocation(line: 22, column: 10, scope: !15)
-!40 = !DILocation(line: 23, column: 5, scope: !41)
-!41 = distinct !DILexicalBlock(scope: !15, file: !3, line: 22, column: 23)
-!42 = distinct !{!42, !37, !43}
-!43 = !DILocation(line: 24, column: 3, scope: !15)
-!44 = !DILocation(line: 26, column: 1, scope: !15)
-!45 = !DILocation(line: 25, column: 3, scope: !15)
-!46 = distinct !DISubprogram(name: "OneElementVector", linkageName: "_ZN16OneElementVectorC1Ei", scope: !21, file: !3, line: 6, type: !25, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, declaration: !24, retainedNodes: !47)
-!47 = !{!48, !50}
-!48 = !DILocalVariable(name: "this", arg: 1, scope: !46, type: !49, flags: DIFlagArtificial | DIFlagObjectPointer)
-!49 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64)
-!50 = !DILocalVariable(name: "Element", arg: 2, scope: !46, file: !3, line: 6, type: !7)
-!51 = !DILocation(line: 0, scope: !46)
-!52 = !DILocation(line: 6, column: 24, scope: !46)
-!53 = !DILocation(line: 6, column: 52, scope: !46)
-!54 = !DILocation(line: 6, column: 70, scope: !46)
-!55 = distinct !DISubprogram(name: "empty", linkageName: "_ZNK16OneElementVector5emptyEv", scope: !21, file: !3, line: 8, type: !29, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !2, declaration: !28, retainedNodes: !56)
-!56 = !{!57}
-!57 = !DILocalVariable(name: "this", arg: 1, scope: !55, type: !58, flags: DIFlagArtificial | DIFlagObjectPointer)
-!58 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !33, size: 64)
-!59 = !DILocation(line: 0, scope: !55)
-!60 = !DILocation(line: 8, column: 24, scope: !55)
-!61 = distinct !DISubprogram(name: "escape", linkageName: "_ZL6escapeR16OneElementVector", scope: !3, file: !3, line: 14, type: !62, isLocal: true, isDefinition: true, scopeLine: 14, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !65)
-!62 = !DISubroutineType(types: !63)
-!63 = !{null, !64}
-!64 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !20, size: 64)
-!65 = !{!66}
-!66 = !DILocalVariable(name: "c", arg: 1, scope: !61, file: !3, line: 14, type: !64)
-!67 = !DILocation(line: 14, column: 31, scope: !61)
-!68 = !DILocation(line: 15, column: 12, scope: !61)
-!69 = !{!70, !71, i64 0}
-!70 = !{!"_ZTS16OneElementVector", !71, i64 0}
-!71 = !{!"int", !72, i64 0}
-!72 = !{!"omnipotent char", !73, i64 0}
-!73 = !{!"Simple C++ TBAA"}
-!74 = !DILocation(line: 15, column: 8, scope: !61)
-!75 = !{!71, !71, i64 0}
-!76 = !DILocation(line: 16, column: 1, scope: !61)
-!77 = distinct !DISubprogram(name: "OneElementVector", linkageName: "_ZN16OneElementVectorC2Ei", scope: !21, file: !3, line: 6, type: !25, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, declaration: !24, retainedNodes: !78)
-!78 = !{!79, !80}
-!79 = !DILocalVariable(name: "this", arg: 1, scope: !77, type: !49, flags: DIFlagArtificial | DIFlagObjectPointer)
-!80 = !DILocalVariable(name: "Element", arg: 2, scope: !77, file: !3, line: 6, type: !7)
-!81 = !DILocation(line: 0, scope: !77)
-!82 = !DILocation(line: 6, column: 24, scope: !77)
-!83 = !DILocation(line: 6, column: 35, scope: !77)
-!84 = !DILocation(line: 6, column: 59, scope: !85)
-!85 = distinct !DILexicalBlock(scope: !77, file: !3, line: 6, column: 52)
-!86 = !DILocation(line: 6, column: 70, scope: !77)
+!8 = !{i32 2, !"Dwarf Version", i32 4}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{i32 1, !"wchar_size", i32 4}
+!11 = !{!"clang"}
+!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 5, type: !13, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!7}
+!15 = !{!16}
+!16 = !DILocalVariable(name: "d1", scope: !12, file: !3, line: 6, type: !7)
+!17 = !DILocation(line: 6, scope: !12)
+!22 = !DILocation(line: 7, scope: !12)
+!23 = !DILocation(line: 8, scope: !12)
+!24 = distinct !{!24, !22, !23}
+!25 = !DILocation(line: 10, scope: !12)
+!26 = !DILocation(line: 9, scope: !12)
+!27 = distinct !DISubprogram(name: "empty", linkageName: "_ZL5emptyi", scope: !3, file: !3, line: 4, type: !28, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !31)
+!28 = !DISubroutineType(types: !29)
+!29 = !{!30, !7}
+!30 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean)
+!31 = !{!32}
+!32 = !DILocalVariable(name: "p1", arg: 1, scope: !27, file: !3, line: 4, type: !7)
+!33 = !DILocation(line: 4, scope: !27)
+!34 = distinct !DISubprogram(name: "escape", linkageName: "_ZL6escapeRi", scope: !3, file: !3, line: 3, type: !35, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !38)
+!35 = !DISubroutineType(types: !36)
+!36 = !{null, !37}
+!37 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !7, size: 64)
+!38 = !{!39}
+!39 = !DILocalVariable(name: "c", arg: 1, scope: !34, file: !3, line: 3, type: !37)
+!42 = !DILocation(line: 3, scope: !34)
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