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08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
111 lines
5.3 KiB
LLVM
111 lines
5.3 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown -stop-before livedebugvalues %s -o - \
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; RUN: | FileCheck %s
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;
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; Generated at -O1 from:
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; typedef struct {
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; unsigned long long c;
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; } S1;
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; struct S3 {
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; unsigned long long packed;
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; };
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; struct S6 {
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; struct S0 *b;
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; };
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; void f(struct S3 *a3)
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; {
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; struct S4 *s4 = (struct S4 *)(a3->packed + 0x1000UL);
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; struct S6 *myVar = (struct S6 *)s4;
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; struct S0 *b = myVar->b;
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; use(b);
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; }
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;
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; The debug info is attached to the ADD 4096 operation, which doesn't survive
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; instruction selection as it is folded into the load.
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;
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; CHECK: ![[S4:.*]] = !DILocalVariable(name: "s4",
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; CHECK: ![[MYVAR:.*]] = !DILocalVariable(name: "myVar",
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; CHECK: DBG_VALUE $rax, $noreg, ![[MYVAR]],
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; CHECK-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
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; CHECK-NEXT: DBG_VALUE $rax, $noreg, ![[S4]],
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; CHECK-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
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; CHECK-NEXT: $rdi = MOV64rm killed renamable $rax, 1, $noreg, 4096, $noreg,
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source_filename = "test.c"
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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-macosx10.13.0"
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%struct.S3 = type { i64 }
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%struct.S4 = type opaque
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%struct.S0 = type opaque
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; Function Attrs: noinline nounwind ssp uwtable
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define void @f(%struct.S3* nocapture readonly %a3) local_unnamed_addr #0 !dbg !6 {
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entry:
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tail call void @llvm.dbg.value(metadata %struct.S3* %a3, metadata !15, metadata !DIExpression()), !dbg !30
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%packed = getelementptr inbounds %struct.S3, %struct.S3* %a3, i64 0, i32 0, !dbg !31
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%0 = load i64, i64* %packed, align 8, !dbg !31
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%add = add i64 %0, 4096, !dbg !37
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%1 = inttoptr i64 %add to %struct.S4*, !dbg !38
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tail call void @llvm.dbg.value(metadata %struct.S4* %1, metadata !16, metadata !DIExpression()), !dbg !39
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tail call void @llvm.dbg.value(metadata %struct.S4* %1, metadata !17, metadata !DIExpression()), !dbg !40
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%b1 = bitcast %struct.S4* %1 to %struct.S0**, !dbg !41
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%2 = load %struct.S0*, %struct.S0** %b1, align 8, !dbg !41
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tail call void @llvm.dbg.value(metadata %struct.S0* %2, metadata !24, metadata !DIExpression()), !dbg !45
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%call = tail call i32 (%struct.S0*, ...) bitcast (i32 (...)* @use to i32 (%struct.S0*, ...)*)(%struct.S0* %2) #3, !dbg !46
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ret void, !dbg !47
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}
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declare i32 @use(...) local_unnamed_addr
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { noinline nounwind ssp uwtable }
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attributes #2 = { nounwind readnone speculatable }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!25, !26, !27, !28}
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!llvm.ident = !{!29}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{}
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!3 = !{!4, !18}
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!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
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!5 = !DICompositeType(tag: DW_TAG_structure_type, name: "S4", scope: !6, file: !1, line: 20, flags: DIFlagFwdDecl)
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!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 18, type: !7, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !14)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
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!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S3", file: !1, line: 5, size: 64, elements: !11)
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!11 = !{!12}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "packed", scope: !10, file: !1, line: 6, baseType: !13, size: 64)
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!13 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!14 = !{!15, !16, !17, !24}
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!15 = !DILocalVariable(name: "a3", arg: 1, scope: !6, file: !1, line: 18, type: !9)
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!16 = !DILocalVariable(name: "s4", scope: !6, file: !1, line: 20, type: !4)
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!17 = !DILocalVariable(name: "myVar", scope: !6, file: !1, line: 21, type: !18)
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!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
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!19 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S6", file: !1, line: 8, size: 64, elements: !20)
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!20 = !{!21}
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!21 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !19, file: !1, line: 9, baseType: !22, size: 64)
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!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
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!23 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 4, flags: DIFlagFwdDecl)
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!24 = !DILocalVariable(name: "b", scope: !6, file: !1, line: 22, type: !22)
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!25 = !{i32 2, !"Dwarf Version", i32 4}
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!26 = !{i32 2, !"Debug Info Version", i32 3}
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!27 = !{i32 1, !"wchar_size", i32 4}
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!28 = !{i32 7, !"PIC Level", i32 2}
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!29 = !{!"clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)"}
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!30 = !DILocation(line: 18, column: 14, scope: !6)
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!31 = !DILocation(line: 20, column: 37, scope: !6)
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!37 = !DILocation(line: 20, column: 44, scope: !6)
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!38 = !DILocation(line: 20, column: 19, scope: !6)
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!39 = !DILocation(line: 20, column: 14, scope: !6)
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!40 = !DILocation(line: 21, column: 14, scope: !6)
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!41 = !DILocation(line: 22, column: 25, scope: !6)
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!45 = !DILocation(line: 22, column: 14, scope: !6)
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!46 = !DILocation(line: 23, column: 3, scope: !6)
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!47 = !DILocation(line: 24, column: 1, scope: !6)
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