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08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
70 lines
3.0 KiB
LLVM
70 lines
3.0 KiB
LLVM
; 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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