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70 lines
3.0 KiB
70 lines
3.0 KiB
4 months ago
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; RUN: llc %s -stop-after=livedebugvars -o %t
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; RUN: cat %t | FileCheck %s
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;
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; Test that we can emit debug info for large values that are split
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; up across multiple registers by the SelectionDAG type legalizer.
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;
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; // Compile with -O1 -m32.
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; long long foo (long long a, long long b)
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; {
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; long long res = b+1;
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; if ( a == b )
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; return res;
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; return 0;
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; }
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;
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; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !{{[0-9]+}}
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; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !{{[0-9]+}}
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; ModuleID = 'sdagsplit-1.c'
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target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
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target triple = "i386"
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; Function Attrs: nounwind readnone
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define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !8 {
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entry:
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tail call void @llvm.dbg.value(metadata i64 %a, metadata !13, metadata !16), !dbg !17
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tail call void @llvm.dbg.value(metadata i64 %b, metadata !14, metadata !16), !dbg !18
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%cmp = icmp eq i64 %a, %b, !dbg !20
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%add = add nsw i64 %b, 1, !dbg !22
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tail call void @llvm.dbg.value(metadata i64 %add, metadata !15, metadata !16), !dbg !19
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%retval.0 = select i1 %cmp, i64 %add, i64 0, !dbg !23
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ret i64 %retval.0, !dbg !24
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind readnone }
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attributes #1 = { nounwind readnone speculatable }
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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_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "sdagsplit-1.c", directory: "/X86")
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!2 = !{}
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!3 = !{i32 1, !"NumRegisterParameters", i32 0}
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!4 = !{i32 2, !"Dwarf Version", i32 2}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !{i32 1, !"wchar_size", i32 4}
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!7 = !{!"clang version 6.0.0 "}
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!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11, !11, !11}
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!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
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!12 = !{!13, !14, !15}
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!13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11)
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!14 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 2, type: !11)
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!15 = !DILocalVariable(name: "res", scope: !8, file: !1, line: 4, type: !11)
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!16 = !DIExpression()
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!17 = !DILocation(line: 2, column: 26, scope: !8)
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!18 = !DILocation(line: 2, column: 39, scope: !8)
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!19 = !DILocation(line: 4, column: 12, scope: !8)
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!20 = !DILocation(line: 5, column: 9, scope: !21)
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!21 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 7)
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!22 = !DILocation(line: 4, column: 19, scope: !8)
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!23 = !DILocation(line: 5, column: 7, scope: !8)
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!24 = !DILocation(line: 8, column: 1, scope: !8)
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