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203 lines
9.2 KiB
LLVM
203 lines
9.2 KiB
LLVM
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; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck %s
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;
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; PR22296: In this testcase the DBG_VALUE describing "p5" becomes unavailable
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; because the register its address is in is clobbered and we (currently) aren't
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; smart enough to realize that the value is rematerialized immediately after the
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; DBG_VALUE and/or is actually a stack slot.
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;
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; Test that we handle this situation gracefully by omitting the DW_AT_location
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; and not asserting.
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; Note that this check may XPASS in the future if DbgValueHistoryCalculator
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; becoms smarter. That would be fine, too.
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;
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; CHECK: DW_TAG_subprogram
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; CHECK: linkage_name{{.*}}_Z2f21A
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NOT: DW_AT_location
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; CHECK-NEXT: DW_AT_name {{.*}}"p5"
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;
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; // Compile at -O1
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; struct A {
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; int *m1;
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; int m2;
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; };
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;
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; void f1(int *p1, int p2);
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; void __attribute__((always_inline)) f2(A p5) { f1(p5.m1, p5.m2); }
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;
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; void func(void*);
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; void func(const int &, const int&);
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; int cond();
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; void f() {
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; while (cond()) {
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; int x;
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; func(x, 0);
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; while (cond()) {
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; char y;
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; func(&y);
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; char j;
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; func(&j);
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; char I;
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; func(&I);
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; func(0, 0);
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; A g;
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; g.m1 = &x;
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; f2(g);
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; }
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; }
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; }
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; ModuleID = 'test.cpp'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.10.0"
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%struct.A = type { i32*, i32 }
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; Function Attrs: alwaysinline ssp uwtable
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define void @_Z2f21A(i32* %p5.coerce0, i32 %p5.coerce1) #0 !dbg !11 {
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entry:
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tail call void @llvm.dbg.value(metadata i32* %p5.coerce0, metadata !16, metadata !33), !dbg !34
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tail call void @llvm.dbg.value(metadata i32 %p5.coerce1, metadata !16, metadata !35), !dbg !34
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tail call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !16, metadata !36), !dbg !34
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tail call void @_Z2f1Pii(i32* %p5.coerce0, i32 %p5.coerce1), !dbg !37
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ret void, !dbg !38
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @_Z2f1Pii(i32*, i32) #2
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; Function Attrs: ssp uwtable
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define void @_Z1fv() #3 !dbg !17 {
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entry:
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%x = alloca i32, align 4
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%ref.tmp = alloca i32, align 4
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%y = alloca i8, align 1
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%j = alloca i8, align 1
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%I = alloca i8, align 1
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%ref.tmp5 = alloca i32, align 4
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%ref.tmp6 = alloca i32, align 4
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%call11 = call i32 @_Z4condv(), !dbg !39
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%tobool12 = icmp eq i32 %call11, 0, !dbg !39
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br i1 %tobool12, label %while.end7, label %while.body, !dbg !40
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while.cond.loopexit: ; preds = %while.body4, %while.body
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%call = call i32 @_Z4condv(), !dbg !39
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%tobool = icmp eq i32 %call, 0, !dbg !39
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br i1 %tobool, label %while.end7, label %while.body, !dbg !40
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while.body: ; preds = %entry, %while.cond.loopexit
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store i32 0, i32* %ref.tmp, align 4, !dbg !41, !tbaa !42
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call void @llvm.dbg.value(metadata i32* %x, metadata !21, metadata !DIExpression(DW_OP_deref)), !dbg !46
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call void @_Z4funcRKiS0_(i32* dereferenceable(4) %x, i32* dereferenceable(4) %ref.tmp), !dbg !47
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%call29 = call i32 @_Z4condv(), !dbg !48
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%tobool310 = icmp eq i32 %call29, 0, !dbg !48
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br i1 %tobool310, label %while.cond.loopexit, label %while.body4, !dbg !49
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while.body4: ; preds = %while.body, %while.body4
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call void @llvm.dbg.value(metadata i8* %y, metadata !23, metadata !DIExpression(DW_OP_deref)), !dbg !50
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call void @_Z4funcPv(i8* %y), !dbg !51
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call void @llvm.dbg.value(metadata i8* %j, metadata !26, metadata !DIExpression(DW_OP_deref)), !dbg !52
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call void @_Z4funcPv(i8* %j), !dbg !53
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call void @llvm.dbg.value(metadata i8* %I, metadata !27, metadata !DIExpression(DW_OP_deref)), !dbg !54
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call void @_Z4funcPv(i8* %I), !dbg !55
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store i32 0, i32* %ref.tmp5, align 4, !dbg !56, !tbaa !42
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store i32 0, i32* %ref.tmp6, align 4, !dbg !57, !tbaa !42
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call void @_Z4funcRKiS0_(i32* dereferenceable(4) %ref.tmp5, i32* dereferenceable(4) %ref.tmp6), !dbg !58
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call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !28, metadata !36), !dbg !59
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call void @llvm.dbg.value(metadata i32* %x, metadata !28, metadata !33), !dbg !59
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call void @llvm.dbg.value(metadata i32* %x, metadata !21, metadata !DIExpression(DW_OP_deref)), !dbg !46
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call void @llvm.dbg.value(metadata i32* %x, metadata !60, metadata !33), !dbg !62
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call void @llvm.dbg.value(metadata i32 undef, metadata !60, metadata !35), !dbg !62
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call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !60, metadata !36), !dbg !62
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call void @_Z2f1Pii(i32* %x, i32 undef), !dbg !63
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%call2 = call i32 @_Z4condv(), !dbg !48
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%tobool3 = icmp eq i32 %call2, 0, !dbg !48
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br i1 %tobool3, label %while.cond.loopexit, label %while.body4, !dbg !49
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while.end7: ; preds = %while.cond.loopexit, %entry
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ret void, !dbg !64
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}
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declare i32 @_Z4condv()
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declare void @_Z4funcRKiS0_(i32* dereferenceable(4), i32* dereferenceable(4))
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declare void @_Z4funcPv(i8*)
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { alwaysinline ssp uwtable }
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attributes #1 = { nounwind readnone }
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attributes #3 = { ssp uwtable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!29, !30, !31}
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!llvm.ident = !{!32}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "test.cpp", directory: "")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 128, align: 64, file: !1, elements: !5, identifier: "_ZTS1A")
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!5 = !{!6, !9}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "m1", line: 2, size: 64, align: 64, file: !1, scope: !4, baseType: !7)
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!7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_member, name: "m2", line: 3, size: 32, align: 32, offset: 64, file: !1, scope: !4, baseType: !8)
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!11 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f21A", line: 7, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 7, file: !1, scope: !12, type: !13, variables: !15)
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!12 = !DIFile(filename: "test.cpp", directory: "")
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!13 = !DISubroutineType(types: !14)
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!14 = !{null, !4}
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!15 = !{!16}
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!16 = !DILocalVariable(name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !4)
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!17 = distinct !DISubprogram(name: "f", linkageName: "_Z1fv", line: 12, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 12, file: !1, scope: !12, type: !18, variables: !20)
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!18 = !DISubroutineType(types: !19)
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!19 = !{null}
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!20 = !{!21, !23, !26, !27, !28}
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!21 = !DILocalVariable(name: "x", line: 14, scope: !22, file: !12, type: !8)
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!22 = distinct !DILexicalBlock(line: 13, column: 18, file: !1, scope: !17)
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!23 = !DILocalVariable(name: "y", line: 17, scope: !24, file: !12, type: !25)
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!24 = distinct !DILexicalBlock(line: 16, column: 20, file: !1, scope: !22)
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!25 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!26 = !DILocalVariable(name: "j", line: 19, scope: !24, file: !12, type: !25)
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!27 = !DILocalVariable(name: "I", line: 21, scope: !24, file: !12, type: !25)
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!28 = !DILocalVariable(name: "g", line: 24, scope: !24, file: !12, type: !4)
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!29 = !{i32 2, !"Dwarf Version", i32 2}
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!30 = !{i32 2, !"Debug Info Version", i32 3}
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!31 = !{i32 1, !"PIC Level", i32 2}
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!32 = !{!"clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)"}
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!33 = !DIExpression(DW_OP_LLVM_fragment, 0, 8)
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!34 = !DILocation(line: 7, column: 42, scope: !11)
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!35 = !DIExpression(DW_OP_LLVM_fragment, 8, 4)
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!36 = !DIExpression()
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!37 = !DILocation(line: 7, column: 48, scope: !11)
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!38 = !DILocation(line: 7, column: 66, scope: !11)
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!39 = !DILocation(line: 13, column: 10, scope: !17)
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!40 = !DILocation(line: 13, column: 3, scope: !17)
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!41 = !DILocation(line: 15, column: 13, scope: !22)
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!42 = !{!43, !43, i64 0}
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!43 = !{!"int", !44, i64 0}
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!44 = !{!"omnipotent char", !45, i64 0}
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!45 = !{!"Simple C/C++ TBAA"}
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!46 = !DILocation(line: 14, column: 9, scope: !22)
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!47 = !DILocation(line: 15, column: 5, scope: !22)
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!48 = !DILocation(line: 16, column: 12, scope: !22)
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!49 = !DILocation(line: 16, column: 5, scope: !22)
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!50 = !DILocation(line: 17, column: 12, scope: !24)
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!51 = !DILocation(line: 18, column: 7, scope: !24)
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!52 = !DILocation(line: 19, column: 12, scope: !24)
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!53 = !DILocation(line: 20, column: 7, scope: !24)
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!54 = !DILocation(line: 21, column: 12, scope: !24)
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!55 = !DILocation(line: 22, column: 7, scope: !24)
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!56 = !DILocation(line: 23, column: 12, scope: !24)
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!57 = !DILocation(line: 23, column: 15, scope: !24)
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!58 = !DILocation(line: 23, column: 7, scope: !24)
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!59 = !DILocation(line: 24, column: 9, scope: !24)
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!60 = !DILocalVariable(name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !4)
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!61 = distinct !DILocation(line: 26, column: 7, scope: !24)
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!62 = !DILocation(line: 7, column: 42, scope: !11, inlinedAt: !61)
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!63 = !DILocation(line: 7, column: 48, scope: !11, inlinedAt: !61)
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!64 = !DILocation(line: 29, column: 1, scope: !17)
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