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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 debug-use %rax, debug-use %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 debug-use %rax, debug-use %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, variables: !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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