e5d844b587
This patch fixes an issue in which ConstantAsMetadata arguments to a DIArglist, as well as the Constant values referenced by that metadata, would not be always be emitted correctly into bitcode. This patch fixes this issue firstly by searching for ConstantAsMetadata in DIArgLists (previously we would only search for them when directly wrapped in MetadataAsValue), and secondly by enumerating all of a DIArgList's arguments directly prior to enumerating the DIArgList itself. This patch also adds a number of asserts, and no longer treats the arguments to a DIArgList as optional fields when reading/writing to bitcode. Differential Revision: https://reviews.llvm.org/D100572
51 lines
2.6 KiB
LLVM
51 lines
2.6 KiB
LLVM
; RUN: opt -verify < %s | opt -verify -S | FileCheck %s
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; Simple IR-BC-IR round-trip test for a @llvm.dbg.value that uses !DIArgList
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; and DW_OP_LLVM_arg.
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source_filename = ".\\debug_value_list.cpp"
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.16.27034"
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; CHECK-COUNT-3: llvm.dbg.value(
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; CHECK-SAME: metadata !DIArgList(i32 %a, i32 %b, i32 5)
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; CHECK-SAME: metadata !16,
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; CHECK-SAME: metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_LLVM_arg, 2, DW_OP_plus)
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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 !DIArgList(i32 %b), metadata !14, metadata !DIExpression(DW_OP_LLVM_arg, 0)), !dbg !17
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call void @llvm.dbg.value(metadata !DIArgList(i32 %a), metadata !15, metadata !DIExpression(DW_OP_LLVM_arg, 0)), !dbg !17
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call void @llvm.dbg.value(
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metadata !DIArgList(i32 %a, i32 %b, i32 5),
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metadata !16,
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metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_LLVM_arg, 2, DW_OP_plus)), !dbg !17
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%mul = mul nsw i32 %b, %a, !dbg !18
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ret i32 %mul, !dbg !18
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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: "debug_value_list.cpp", directory: "/tmp")
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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: ".\\debug_value_list.cpp", directory: "/tmp")
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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: "b", arg: 2, scope: !8, file: !9, line: 1, type: !12)
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!15 = !DILocalVariable(name: "a", arg: 1, 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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!18 = !DILocation(line: 3, scope: !8)
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