094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
116 lines
6.1 KiB
LLVM
116 lines
6.1 KiB
LLVM
; RUN: opt -passes=instcombine %s -o - -S | FileCheck %s
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; RUN: opt -passes=instcombine %s -o - -S --try-experimental-debuginfo-iterators | FileCheck %s
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; typedef struct v *v_t;
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; struct v {
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; unsigned long long p;
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; };
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;
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; void f(v_t object, unsigned long long *start) {
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; unsigned head_size;
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; unsigned long long orig_start;
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; unsigned long long offset;
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; orig_start = *start;
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; for (offset = orig_start - (unsigned long long)(1 << 12); head_size;
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; offset -= (unsigned long long)(1 << 12), head_size -= (1 << 12))
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; use(offset, (object));
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; }
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source_filename = "test.i"
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target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
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target triple = "thumbv7s-apple-ios5.0.0"
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%struct.vm_object = type { i64 }
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; Function Attrs: nounwind ssp
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define void @f(ptr %object, ptr nocapture readonly %start, i1 %c1) local_unnamed_addr #0 !dbg !11 {
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entry:
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tail call void @llvm.dbg.value(metadata ptr %object, metadata !21, metadata !DIExpression()), !dbg !27
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tail call void @llvm.dbg.value(metadata ptr %start, metadata !22, metadata !DIExpression()), !dbg !28
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%0 = load i64, ptr %start, align 4, !dbg !29
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tail call void @llvm.dbg.value(metadata i64 %0, metadata !25, metadata !DIExpression()), !dbg !30
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%offset.08 = add i64 %0, -4096
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tail call void @llvm.dbg.value(metadata i64 %offset.08, metadata !26, metadata !DIExpression()), !dbg !31
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tail call void @llvm.dbg.value(metadata i32 undef, metadata !23, metadata !DIExpression()), !dbg !32
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br i1 %c1, label %for.end, label %for.body.lr.ph, !dbg !32
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for.body.lr.ph: ; preds = %entry
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; The 'load' and the 'add' are sunken to this basic block. So let's verify that the related dbg.values are sunken as well.
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; The add is later eliminated, so we verify that the dbg.value is salvaged by using DW_OP_minus.
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; CHECK-LABEL: for.body.lr.ph:
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; CHECK-NEXT: %0 = load
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; CHECK-NEXT: #dbg_value(i64 %0, !25, !DIExpression(), !
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; CHECK-NEXT: #dbg_value(i64 %0, !26, !DIExpression(DW_OP_constu, 4096, DW_OP_minus, DW_OP_stack_value), !
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br label %for.body, !dbg !32
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for.body: ; preds = %for.body.lr.ph, %for.body
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; CHECK-LABEL: for.body:
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%offset.010 = phi i64 [ %offset.08, %for.body.lr.ph ], [ %offset.0, %for.body ]
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%head_size.09 = phi i32 [ poison, %for.body.lr.ph ], [ %sub2, %for.body ]
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tail call void @llvm.dbg.value(metadata i32 %head_size.09, metadata !23, metadata !DIExpression()), !dbg !31
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%call = tail call i32 @use(i64 %offset.010, ptr %object) #3, !dbg !34
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%sub2 = add i32 %head_size.09, -4096, !dbg !37
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%offset.0 = add i64 %offset.010, -4096
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tail call void @llvm.dbg.value(metadata i64 %offset.0, metadata !26, metadata !DIExpression()), !dbg !30
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; CHECK: #dbg_value(i64 %offset.010, !26, !DIExpression(DW_OP_constu, 4096, DW_OP_minus, DW_OP_stack_value), !
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tail call void @llvm.dbg.value(metadata i32 %sub2, metadata !23, metadata !DIExpression()), !dbg !31
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%tobool = icmp eq i32 %sub2, 0, !dbg !32
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br i1 %tobool, label %for.end, label %for.body, !dbg !32, !llvm.loop !38
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for.end: ; preds = %for.body, %entry
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ret void, !dbg !40
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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 = { nounwind ssp }
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attributes #2 = { nounwind readnone speculatable }
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attributes #3 = { nobuiltin }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!5, !6, !7, !8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 317434) (llvm/trunk 317437)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
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!1 = !DIFile(filename: "test.i", directory: "/Data/radar/31209283")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!5 = !{i32 2, !"Dwarf Version", i32 2}
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!6 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = !{i32 1, !"wchar_size", i32 4}
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!8 = !{i32 1, !"min_enum_size", i32 4}
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!9 = !{i32 7, !"PIC Level", i32 2}
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!10 = !{!"clang version 6.0.0 (trunk 317434) (llvm/trunk 317437)"}
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!11 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 6, type: !12, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !20)
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!12 = !DISubroutineType(types: !13)
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!13 = !{null, !14, !19}
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!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "v_t", file: !1, line: 1, baseType: !15)
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!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 32)
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!16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v", file: !1, line: 2, size: 64, elements: !17)
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!17 = !{!18}
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !16, file: !1, line: 3, baseType: !4, size: 64)
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!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 32)
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!20 = !{!21, !22, !23, !25, !26}
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!21 = !DILocalVariable(name: "object", arg: 1, scope: !11, file: !1, line: 6, type: !14)
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!22 = !DILocalVariable(name: "start", arg: 2, scope: !11, file: !1, line: 6, type: !19)
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!23 = !DILocalVariable(name: "head_size", scope: !11, file: !1, line: 7, type: !24)
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!24 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!25 = !DILocalVariable(name: "orig_start", scope: !11, file: !1, line: 8, type: !4)
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!26 = !DILocalVariable(name: "offset", scope: !11, file: !1, line: 9, type: !4)
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!27 = !DILocation(line: 6, column: 20, scope: !11)
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!28 = !DILocation(line: 6, column: 48, scope: !11)
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!29 = !DILocation(line: 8, column: 22, scope: !11)
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!30 = !DILocation(line: 7, column: 12, scope: !11)
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!31 = !DILocation(line: 10, column: 16, scope: !11)
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!32 = !DILocation(line: 11, column: 5, scope: !33)
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!33 = distinct !DILexicalBlock(scope: !11, file: !1, line: 11, column: 5)
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!34 = !DILocation(line: 13, column: 7, scope: !35)
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!35 = distinct !DILexicalBlock(scope: !36, file: !1, line: 12, column: 75)
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!36 = distinct !DILexicalBlock(scope: !33, file: !1, line: 11, column: 5)
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!37 = !DILocation(line: 12, column: 61, scope: !36)
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!38 = distinct !{!38, !32, !39}
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!39 = !DILocation(line: 14, column: 3, scope: !33)
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!40 = !DILocation(line: 15, column: 1, scope: !11)
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