4495485eb6
DPValues are the non-intrinsic replacements for dbg.values, and when an
IR function is converted by SelectionDAG we need to convert the variable
location information in the same way. Happily all the information is in
the same format, it's just stored in a slightly different object,
therefore this patch refactors a few things to store the set of
{Variable,Expr,DILocation,Location} instead of just a pointer to a
DbgValueInst.
This also adds a hook in llc that's much like the one I've added to opt
in PR #71937, allowing tests to optionally ask for the use RemoveDIs
mode if support for it is built into the compiler.
I've added that flag to a variety of SelectionDAG debug-info tests to
ensure that we get some coverage on the RemoveDIs / debug-info-iterator
buildbot.
55 lines
3.0 KiB
LLVM
55 lines
3.0 KiB
LLVM
;; FIXME: We currently don't do any special bookkeeping for unused args used by
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;; variadic dbg_values. When/if we support them, the DBG_VALUE_LIST should be
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;; updated accordingly.
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; RUN: llc %s -start-after=codegenprepare --experimental-debug-variable-locations=false -stop-before=finalize-isel -o - | FileCheck %s
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; RUN: llc %s -start-after=codegenprepare --experimental-debug-variable-locations -stop-before=finalize-isel -o - | FileCheck %s
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; RUN: llc %s -start-after=codegenprepare --experimental-debug-variable-locations=false -stop-before=finalize-isel -o - --try-experimental-debuginfo-iterators | FileCheck %s
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; RUN: llc %s -start-after=codegenprepare --experimental-debug-variable-locations -stop-before=finalize-isel -o - --try-experimental-debuginfo-iterators | FileCheck %s
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;; Check that unused argument values are handled the same way for variadic
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;; dbg_values as non-variadics.
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; CHECK: ![[A:[0-9]+]] = !DILocalVariable(name: "a",
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; CHECK: ![[B:[0-9]+]] = !DILocalVariable(name: "b",
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; CHECK: ![[C:[0-9]+]] = !DILocalVariable(name: "c",
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; CHECK: DBG_VALUE $ecx, $noreg, ![[A]], !DIExpression(), debug-location
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; CHECK: DBG_VALUE $edx, $noreg, ![[B]], !DIExpression(), debug-location
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; CHECK: DBG_VALUE $noreg, $noreg, ![[C]], !DIExpression(), debug-location
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target triple = "x86_64-pc-windows-msvc19.16.27034"
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define dso_local i32 @"?foo@@YAHHH@Z"(i32 %a, i32 %b) local_unnamed_addr !dbg !8 {
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entry:
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call void @llvm.dbg.value(metadata i32 %a, metadata !14, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata i32 %b, metadata !15, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.value(metadata !DIArgList(i32 %a, i32 %b), metadata !16, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value)), !dbg !17
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ret i32 0
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 11.0.0"}
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!8 = distinct !DISubprogram(name: "foo", linkageName: "?foo@@YAHHH@Z", scope: !9, file: !9, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
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!9 = !DIFile(filename: "test.cpp", directory: "/")
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!10 = !DISubroutineType(types: !11)
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!11 = !{!12, !12, !12}
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !{!14, !15, !16}
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!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !9, line: 1, type: !12)
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!15 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !9, line: 1, type: !12)
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!16 = !DILocalVariable(name: "c", scope: !8, file: !9, line: 2, type: !12)
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!17 = !DILocation(line: 0, scope: !8)
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