50 lines
2.5 KiB
LLVM
50 lines
2.5 KiB
LLVM
; RUN: opt %s -dce -S | FileCheck %s
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; Tests the results of salvaging variadic dbg.values that use the same SSA value
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; multiple times.
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; CHECK: call void @llvm.dbg.value(metadata !DIArgList(i32 %a, i32 %a),
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; CHECK-SAME: ![[VAR_C:[0-9]+]],
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; CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 5, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 5, DW_OP_plus, DW_OP_stack_value))
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; CHECK: call void @llvm.dbg.value(metadata !DIArgList(i32 %a, i32 %a, i32 %b, i32 %b),
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; CHECK-SAME: ![[VAR_C]],
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; CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_plus, DW_OP_LLVM_arg, 1, DW_OP_LLVM_arg, 3, DW_OP_plus, DW_OP_plus, DW_OP_stack_value))
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; CHECK: ![[VAR_C]] = !DILocalVariable(name: "c"
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define i32 @"?multiply@@YAHHH@Z"(i32 %a, i32 %b) !dbg !8 {
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entry:
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%add1 = add nsw i32 %a, 5, !dbg !15
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%add2 = add nsw i32 %a, %b, !dbg !15
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call void @llvm.dbg.value(metadata !DIArgList(i32 %add1, i32 %add1), metadata !16, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value)), !dbg !13
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call void @llvm.dbg.value(metadata !DIArgList(i32 %add2, i32 %add2), metadata !16, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value)), !dbg !13
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%mul = mul nsw i32 %a, %b, !dbg !17
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ret i32 %mul, !dbg !17
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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: false, 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: "multiply", linkageName: "?multiply@@YAHHH@Z", scope: !1, file: !1, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11, !11, !11}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 1, type: !11)
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!13 = !DILocation(line: 0, scope: !8)
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!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)
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!15 = !DILocation(line: 2, scope: !8)
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!16 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 2, type: !11)
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!17 = !DILocation(line: 3, scope: !8)
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